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Hirano Y, Miyawaki S, Sakaguchi Y, Koizumi S, Hongo H, Saito N. A bibliometric analysis of the 100 most-cited clinical articles in the research of intracranial artery stenosis and intracranial atherosclerosis. Surg Neurol Int 2024; 15:74. [PMID: 38628533 PMCID: PMC11021113 DOI: 10.25259/sni_1030_2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 01/19/2024] [Indexed: 04/19/2024] Open
Abstract
Background Intracranial arterial stenosis (ICAS), caused by intracranial atherosclerosis, is one of the major causes of ischemic stroke. This study identified the top 100 most-cited publications on ICAS through a bibliometric analysis. Methods Two independent authors conducted a search in the Web of Science database for clinical articles on ICAS published between 1993 and 2022. The top 100 most-cited articles were then extracted. For each article, the analysis covered the title, author, country of origin/affiliation, journal, total number of citations, number of citations per year, and type of study. Results The top 100 most-cited papers in the ICAS were authored by 565 authors from 12 countries and published in 29 journals. In terms of the 5-year trend, the largest number of papers were published between 2003 and 2007 (n = 31). The median number of citations for the 100 papers was 161 (range 109-1,115). The journal with the highest proportion of the 100 most published articles was Stroke, accounting for 41% of articles and 37% of the citations. According to country of origin, the United States of America accounted for the largest number of articles, followed by China, Japan, and South Korea, with these four countries together accounting for 81% of the total number of articles and 88% of the citations. Trends in the past five years included the use of terms such as acute ischemic stroke and mechanical thrombectomy. Conclusion The findings of this study provide novel insight into this field and will facilitate future research endeavors.
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Affiliation(s)
- Yudai Hirano
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Satoru Miyawaki
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Yusuke Sakaguchi
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Satoshi Koizumi
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Hiroki Hongo
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Japan
| | - Nobuhito Saito
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo, Japan
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Chen LH, Spagnolo-Allende A, Yang D, Qiao Y, Gutierrez J. Epidemiology, Pathophysiology, and Imaging of Atherosclerotic Intracranial Disease. Stroke 2024; 55:311-323. [PMID: 38252756 PMCID: PMC10827355 DOI: 10.1161/strokeaha.123.043630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Intracranial atherosclerotic disease (ICAD) is one of the most common causes of stroke worldwide. Among people with stroke, those of East Asia descent and non-White populations in the United States have a higher burden of ICAD-related stroke compared with Whites of European descent. Disparities in the prevalence of asymptomatic ICAD are less marked than with symptomatic ICAD. In addition to stroke, ICAD increases the risk of dementia and cognitive decline, magnifying ICAD societal burden. The risk of stroke recurrence among patients with ICAD-related stroke is the highest among those with confirmed stroke and stenosis ≥70%. In fact, the 1-year recurrent stroke rate of >20% among those with stenosis >70% is one of the highest rates among common causes of stroke. The mechanisms by which ICAD causes stroke include plaque rupture with in situ thrombosis and occlusion or artery-to-artery embolization, hemodynamic injury, and branch occlusive disease. The risk of stroke recurrence varies by the presumed underlying mechanism of stroke, but whether techniques such as quantitative magnetic resonance angiography, computed tomographic angiography, magnetic resonance perfusion, or transcranial Doppler can help with risk stratification beyond the degree of stenosis is less clear. The diagnosis of ICAD is heavily reliant on lumen-based studies, such as computed tomographic angiography, magnetic resonance angiography, or digital subtraction angiography, but newer technologies, such as high-resolution vessel wall magnetic resonance imaging, can help distinguish ICAD from stenosing arteriopathies.
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Affiliation(s)
- Li Hui Chen
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA
| | - Antonio Spagnolo-Allende
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA
| | - Dixon Yang
- Department of Neurology, Rush University, Chicago, IL, USA
| | - Ye Qiao
- Department of Radiology, Johns Hopkins University, Baltimore, MD, USA
| | - Jose Gutierrez
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA
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Charles JH, Desai S, Jean Paul A, Hassan A. Multimodal imaging approach for the diagnosis of intracranial atherosclerotic disease (ICAD): Basic principles, current and future perspectives. Interv Neuroradiol 2024; 30:105-119. [PMID: 36262087 PMCID: PMC10956456 DOI: 10.1177/15910199221133170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 09/29/2022] [Indexed: 02/05/2023] Open
Abstract
PURPOSE To review the different imaging modalities utilized in the diagnosis of Intracranial Atherosclerotic Disease (ICAD) including their latest development and relevance in management of ICAD. METHODS A review of the literature was conducted through a search in google scholar, PubMed/Medline, EMBASE, Scopus, clinical trials.gov and the Cochrane Library. Search terms included, "imaging modalities in ICAD," "ICAD diagnostic," "Neuroimaging of ICAD," "Evaluation of ICAD". A summary and comparison of each modality's basic principles, advantages and disadvantages were included. RESULTS A total of 144 articles were identified and reviewed. The most common imaging used in ICAD diagnoses were DSA, CTA, MRA and TCD. They all had proven accuracy, their own benefits, and limitations. Newer modalities such as VWI, IVUS, OCT, PWI and CFD provide more detailed information regarding the vessel walls, plaque characteristics, and flow dynamics, which play a tremendous role in treatment guidance. In certain clinical scenarios, using more than one modality has been shown to be helpful in ICAD identification. The rapidly evolving software related to imaging studies, such as virtual histology, are very promising for the diagnostic and management of ICAD. CONCLUSIONS ICAD is a common cause of recurrent ischemic stroke. Its management can be both medical and/or procedural. Many different imaging modalities are used in its diagnosis. In certain clinical scenario, a combination of two more modalities can be critical in the management of ICAD. We expect that continuous development of imaging technique will lead to individualized and less invasive management with adequate outcome.
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Affiliation(s)
| | - Sohum Desai
- Department of Endovascular Surgical Neuroradiology, Valley Baptist Medical Center, Harlingen, Texas, USA
| | - Axler Jean Paul
- School of Medicine, State University of Haiti, Port Au Prince, Haiti
| | - Ameer Hassan
- Department of Endovascular Surgical Neuroradiology, Valley Baptist Medical Center, Harlingen, Texas, USA
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Liu WJ. The diagnosis of intracranial artery stenosis in patients with stroke by transcranial Doppler ultrasound: A meta-analysis. Technol Health Care 2024; 32:639-649. [PMID: 37661896 DOI: 10.3233/thc-220844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
BACKGROUND Strokes are the most common cause of death and the leading cause of acquired disability in adults worldwide. OBJECTIVE The present study aimed to investigate the value of transcranial Doppler ultrasound (TCD) in the diagnosis of intracranial vascular stenosis in patients with a history of stroke. METHODS This is a meta-analysis study of diagnostic tests. PubMed, Embase, Cochrane Library, China National Knowledge Infrastructure, Wanfang, and VIP databases were systematically searched. Diagnostic tests using TCD or transcranial colour Doppler ultrasound (TCCD) for detecting intracranial arterial stenosis in patients with a history of stroke were included, with reference standards of intracranial angiography, computed tomography angiography (CTA), or magnetic resonance angiography. The risk bias map was drawn by Revman v5.3, the sensitivity and specificity forest plot was drawn by Stata v16.0, the receiver operating characteristic curve was drawn, and the area under the curve (AUC) was calculated. RESULTS A total of 812 patients with stroke in 12 studies were included in the meta-analysis. The estimated sensitivity of TCD or TCCD for the detection of intracranial vascular stenosis was 0.77-1.00, and the combined sensitivity was 0.96 (95% confidence interval [CI]: 0.88-0.99); the estimated specificity was 0.32-1.00, and the combined specificity was 0.94 (95% CI: 0.82-0.98); the positive likelihood ratio was 15.8 (95% CI: 5.1-48.6); and the negative likelihood ratio was 0.04 (95% CI: 0.01-0.14). The AUC was 0.99 (95% CI: 0.97-0.99). CONCLUSION Doppler ultrasound has good consistency with conventional methods for the diagnosis of intracranial artery stenosis in patients with a history of stroke. Different reference standards may affect sensitivity and specificity; when CTA was used as the reference standard, the consistency of the TCD in the diagnosis of intracranial artery stenosis in stroke patients was relatively good.
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Johnsen LH, Herder M, Vangberg T, Isaksen JG, Mathiesen EB. Prevalence of intracranial artery stenosis in a general population using 3D-time of flight magnetic resonance angiography. J Stroke Cerebrovasc Dis 2023; 32:107399. [PMID: 37866296 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 09/12/2023] [Accepted: 09/26/2023] [Indexed: 10/24/2023] Open
Abstract
BACKGROUND Data on prevalence of intracranial artery stenosis (ICAS) in Western populations is sparse. The aim of the study was to assess the prevalence and risk factors for ICAS in a mainly Caucasian general population. METHODS We assessed the prevalence of ICAS in 1847 men and women aged 40 to 84 years who participated in a cross-sectional population-based study, using 3-dimensional time-of-flight 3 Tesla magnetic resonance angiography. ICAS was defined as a focal luminal flow diameter reduction of ≥50 %. The association between cardiovascular risk factor levels and ICAS was assessed by multivariable regression analysis. RESULTS The overall prevalence of ICAS was 6.0 % (95 % confidence interval (CI) 5.0-7.2), 4.3 % (95 % CI 3.1-5.7) in women and 8.0 % (95 % CI 6.3-10.0) in men. The prevalence increased by age from 0.8 % in 40-54 years age group to 15.2 % in the 75-84 years age group. The majority of stenoses was located to the internal carotid artery (52.2 %), followed by the posterior circulation (33.1 %), the middle cerebral artery (10.8 %) and the anterior cerebral artery (3.8 %). The risk of ICAS was independently associated with higher age, male sex, hypertension, hyperlipidemia, diabetes mellitus, current smoking and higher BMI. CONCLUSIONS The prevalence of ICAS in a general population of Caucasians was relatively high and similar to the prevalence of extracranial internal carotid artery stenosis in previous population-based studies.
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Affiliation(s)
- Liv-Hege Johnsen
- Department of Radiology, University Hospital of North Norway, Tromsø, Norway; Department of Clinical Medicine, Faculty of Medicine, UiT The Arctic University of Norway, Tromsø, Norway.
| | - Marit Herder
- Department of Radiology, University Hospital of North Norway, Tromsø, Norway; Department of Clinical Medicine, Faculty of Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| | - Torgil Vangberg
- Department of Clinical Medicine, Faculty of Medicine, UiT The Arctic University of Norway, Tromsø, Norway; PET Imaging Center, University Hospital of North Norway, Tromsø, Norway
| | - Jørgen Gjernes Isaksen
- Department of Clinical Medicine, Faculty of Medicine, UiT The Arctic University of Norway, Tromsø, Norway; Department of Neurosurgery, Ophthalmology, and Otorhinolaryngology, University Hospital of North Norway, Tromsø, Norway
| | - Ellisiv B Mathiesen
- Department of Clinical Medicine, Faculty of Medicine, UiT The Arctic University of Norway, Tromsø, Norway; Department of Neurology, University Hospital of North Norway, Tromsø, Norway
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Yang A, Nguyenhuy M, Seevanayagam S. Intracranial Atherosclerosis Increases the Risk of Postoperative Stroke After Cardiac Surgery: A Review and Meta-Analysis. Heart Lung Circ 2023; 32:1417-1425. [PMID: 38016908 DOI: 10.1016/j.hlc.2023.09.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/18/2023] [Indexed: 11/30/2023]
Abstract
BACKGROUND Postoperative stroke is a devastating complication of cardiac surgery with high morbidity, mortality, and health care cost. Extracranial carotid atherosclerosis (ECAS) is a known risk factor for stroke; however, the impact of intracranial atherosclerosis (ICAS) remains unclear. To our knowledge, this is the first literature review of ICAS in cardiac surgery. We aimed to assess the prevalence, association with postoperative stroke, and perioperative management of ICAS in cardiac surgery. METHOD A search was performed to identify studies reporting rates of ICAS and stroke after cardiac surgery. Data extraction and primary outcomes for meta-analysis included the prevalence of preoperative ICAS and the association between ICAS and stroke. Risk ratios (RRs) and 95% confidence intervals (CIs) were pooled by random-effects modelling. RESULTS Seventeen studies were reviewed and seven were included in the meta-analysis, comprising 4,936 patients. Prevalence of intracranial atherosclerosis (ICAS) among cardiac surgery patients was 21% (95% CI 13%-32%). Patients with ICAS were more likely to develop postoperative stroke (RR 3.61; 95% CI 2.30-5.67; p<0.001). ICAS was more closely associated with stroke than ECAS. Preoperative brain perfusion single-photon emission computed tomography with acetazolamide challenge, staged intracerebral revascularisation, or conversion to off-pump coronary artery bypass grafting are described management options for ICAS. CONCLUSION Patients with ICAS are 3.61 times more likely to develop stroke after cardiac surgery. Known predictors for ICAS can be used to develop risk stratification screening tools. Further research with diverse cohorts is required to develop evidence-based guidelines for screening and management of ICAS in cardiac surgery.
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Affiliation(s)
- Amy Yang
- Brian F. Buxton Department of Cardiac and Thoracic Aortic Surgery, Austin Health, Melbourne, Vic, Australia.
| | | | - Siven Seevanayagam
- Brian F. Buxton Department of Cardiac and Thoracic Aortic Surgery, Austin Health, Melbourne, Vic, Australia
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Choi JJ, Kukla B, Walsh P, Oldham MA, Lee HB. Functional, cognitive, and cerebrovascular aspects of depression before coronary artery bypass graft surgery: Testing the vascular depression hypothesis. Int J Geriatr Psychiatry 2023; 38:e6000. [PMID: 37684728 PMCID: PMC10544764 DOI: 10.1002/gps.6000] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023]
Abstract
OBJECTIVE Depression in patients undergoing coronary artery graft bypass (CABG) surgery is associated with morbidity and mortality, making its early identification and clinical management crucial. Vasculopathy and older age, hallmarks of patients requiring CABG, are also features of vascular depression. In this study, we assess for features of vascular depression in patients undergoing CABG surgery. METHODS This is a cross-sectional analysis of a single-site prospective observational cohort study of patients undergoing CABG surgery. Subjects were assessed preoperatively using the Depression Interview and Structured Hamilton (DISH), depression scales, transcranial Doppler, neuropsychological testing, and clinical dementia rating (CDR). RESULTS Of 161 subjects (mean age 66.2 ± 9.3, female 25%) who completed DISH, 18 had major or minor depression, 17 of whom had a past history of major or minor depression (mean age of onset 35.8 years-old). Pre-CABG depression was associated with greater functional impairment on CDR Sum of Boxes (OR = 3.7, 95% CI: 1.4, 9.7) and worse performance on letter fluency test (OR = 0.90, 95% CI: 0.81, 0.99) and trail-making tests (A: OR = 1.06, 95% CI: 1.01, 1.12; B: OR 1.02, 95% CI: 1.01, 1.04). Pre-CABG depression was not associated with middle cerebral artery (MCA) stenosis. CONCLUSIONS Pre-CABG depression is associated with cognitive and functional impairment similar to vascular depression, but we did not find evidence of an association with older age of onset and MCA stenosis. Further studies on white matter disease in this population are needed to examine the vascular depression hypothesis for pre-CABG depression.
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Affiliation(s)
- Joy J. Choi
- University of Rochester Medical Center, Rochester, New York
| | - Bennett Kukla
- Canandaigua Veterans Affairs Medical Center, Canandaigua, New York
| | - Patrick Walsh
- University of Rochester Medical Center, Rochester, New York
| | - Mark A. Oldham
- University of Rochester Medical Center, Rochester, New York
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Lin CJ, Chung CP, Liao NC, Chen PL, Chi NF, Lai YJ, Tang CW, Wu CH, Chang FC, Luo CB, Fay LY, Lin CF, Chou CH, Lee TH, Lee JT, Jeng JS, Lee IH. The 2023 Taiwan Stroke Society Guidelines for the management of patients with intracranial atherosclerotic disease. J Chin Med Assoc 2023; 86:697-714. [PMID: 37341526 DOI: 10.1097/jcma.0000000000000952] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/22/2023] Open
Abstract
Intracranial atherosclerotic disease (ICAD) is a major cause of ischemic stroke, especially in Asian populations, which has a high risk of recurrent stroke and cardiovascular comorbidities. The present guidelines aim to provide updated evidence-based recommendations for diagnosis and management of patients with ICAD. Taiwan Stroke Society guideline consensus group developed recommendations for management of patients with ICAD via consensus meetings based on updated evidences. Each proposed class of recommendation and level of evidence was approved by all members of the group. The guidelines cover six topics, including (1) epidemiology and diagnostic evaluation of ICAD, (2) nonpharmacological management of ICAD, (3) medical therapy for symptomatic ICAD, (4) endovascular thrombectomy and rescue therapy for acute ischemic stroke with underlying ICAD, (5) endovascular interventional therapy for postacute symptomatic intracranial arterial stenosis, and (6) surgical treatment of chronic symptomatic intracranial arterial stenosis. Intensive medical treatment including antiplatelet therapy, risk factor control, and life style modification are essential for patients with ICAD.
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Affiliation(s)
- Chun-Jen Lin
- Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Chih-Ping Chung
- Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Nien-Chen Liao
- Department of Neurology, Taichung Veterans General Hospital, Taichung, Taiwan, ROC
| | - Po-Lin Chen
- Department of Neurology, Taichung Veterans General Hospital, Taichung, Taiwan, ROC
| | - Nai-Fang Chi
- Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Yen-Jun Lai
- Radiology Department, Far-Eastern Memorial Hospital, New Taipei City, Taiwan, ROC
| | - Chih-Wei Tang
- Neurology Department and Stroke Center, Far-Eastern Memorial Hospital, New Taipei City, Taiwan, ROC
| | - Chia-Hung Wu
- Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Feng-Chi Chang
- Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Chao-Bao Luo
- Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Li-Yu Fay
- Department of Neurosurgery, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Chun-Fu Lin
- Department of Neurosurgery, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Chung-Hsing Chou
- Neurology Department, Tri-Service General Hospital, Taipei, Taiwan, ROC
| | - Tsong-Hai Lee
- Department of Neurology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan, ROC
| | - Jiunn-Tay Lee
- Neurology Department, Tri-Service General Hospital, Taipei, Taiwan, ROC
| | - Jiann-Shing Jeng
- Department of Neurology and Stroke Center, National Taiwan University Hospital, Taipei, Taiwan, ROC
| | - I-Hui Lee
- Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
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Wang N, Lu Y, Feng L, Lin D, Gao Y, Wu J, Wang M, Wan S. Identifying risk factors for in-stent restenosis in symptomatic intracranial atherosclerotic stenosis: a systematic review and meta-analysis. Front Neurol 2023; 14:1170110. [PMID: 37521300 PMCID: PMC10375724 DOI: 10.3389/fneur.2023.1170110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 06/26/2023] [Indexed: 08/01/2023] Open
Abstract
Background In-stent restenosis (ISR) is an adverse and notable event in the treatment of intracranial atherosclerotic stenosis (ICAS) with percutaneous transluminal angioplasty and stenting (PTAS). The incidence and contributing factors have not been fully defined. This study was performed to evaluate factors associated with ISR after PTAS. Data source We identified studies on ISR after PTAS from an electronic search of articles in PubMed, Ovid MEDLINE, and the Cochrane Central Database (dated up to July 2022). Results A total of 19 studies, including 452 cases of ISR after 2,047 PTAS, were included in the meta-analysis. The pooled incidence rate of in-stent restenosis was 22.08%. ISR was more likely to occur in patients with coronary artery disease (OR = 1.686; 95% CI: 1.242-2.288; p = 0.0008), dissection (OR = 6.293; 95% CI: 3.883-10.197; p < 0.0001), and higher residual stenosis (WMD = 3.227; 95% CI: 0.142-6.311; p = 0.0404). Patients treated with Wingspan stents had a significantly higher ISR rate than those treated with Enterprise stents (29.78% vs. 14.83%; p < 0.0001). Conclusions The present study provides the current estimates of the robust effects of some risk factors for in-stent restenosis in intracranial atherosclerotic stenosis. The Enterprise stent had advantages compared with the Wingspan stent for ISR. The significant risk factors for ISR were coronary artery disease, dissection, and high residual stenosis. Local anesthesia was a suspected factor associated with ISR.
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Affiliation(s)
- Ning Wang
- Brain Center, Zhejiang Hospital, Hangzhou, China
| | - Yuning Lu
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Lei Feng
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Dongdong Lin
- Brain Center, Zhejiang Hospital, Hangzhou, China
| | - Yuhai Gao
- Brain Center, Zhejiang Hospital, Hangzhou, China
| | - Jiong Wu
- Brain Center, Zhejiang Hospital, Hangzhou, China
| | - Ming Wang
- Brain Center, Zhejiang Hospital, Hangzhou, China
| | - Shu Wan
- Brain Center, Zhejiang Hospital, Hangzhou, China
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Zhao W, Ma X, Ju J, Zhao Y, Wang X, Li S, Sui Y, Sun Q. Association of visceral adiposity index with asymptomatic intracranial arterial stenosis: a population-based study in Shandong, China. Lipids Health Dis 2023; 22:64. [PMID: 37198613 DOI: 10.1186/s12944-023-01831-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 05/09/2023] [Indexed: 05/19/2023] Open
Abstract
BACKGROUND AND OBJECTIVE The visceral adiposity index (VAI), as a composite indictor to evaluate visceral adipose function, has been demonstrated to be correlated with atherosclerosis. The study objective was to explore the association between asymptomatic intracranial arterial stenosis (aICAS) and VAI in Chinese rural dwellers. METHODS The cross-sectional study consisted of 1942 participants ≥ 40 years old who were living in Pingyin County, Shandong Province and free from history of clinical stroke and transient ischemic attack. The aICAS in the study was diagnosed by transcranial doppler ultrasound combined with magnetic resonance angiography. The multivariate logistic regression models were deployed to explore the correlation of VAI with aICAS, and receiver operating characteristic (ROC) curve were plotted to compare the performance of models. RESULTS The participants with aICAS comparing to those without had a significantly higher VAI. After adjusting for confounding factors including age, hypertension, DM, sex, drinking habit, LDL-C, hsCRP, and smoking habit, the VAI-Tertile 3 (vs. VAI-Tertile 1) was positively associated with aICAS (OR, 2.15; 95% CI, 1.25-3.65; P = 0.005). The VAI-Tertile 3 was still markedly associated with aICAS among the underweight and normal weight (BMI ≤ 23.9 kg/m2) participants (OR, 3.17; 95% CI, 1.15-8.71; P = 0.026) with an AUC = 0.684. A similar relationship between VAI and aICAS was obtained among the participants with no abdominal obesity (WHR < 1, OR, 2.03; 95% CI, 1.14-3.62; P = 0.017). CONCLUSIONS The possible correlation between VAI and aICAS was found to be positive for the first time among Chinese rural residents over 40 years old. A higher VAI was found to be significantly associated with aICAS among the participants who were underweight or normal weight, and these results may provide additional risk stratification information for aICAS.
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Affiliation(s)
- Weihua Zhao
- Department of Neurology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, China
| | - Xiaotong Ma
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, No. 324 Jingwu Weiqi Road, Jinan, Shandong, 250021, P.R. China
| | - Jiachen Ju
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, No. 324 Jingwu Weiqi Road, Jinan, Shandong, 250021, P.R. China
| | - Yuanyuan Zhao
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, No. 324 Jingwu Weiqi Road, Jinan, Shandong, 250021, P.R. China
| | - Xiang Wang
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, No. 324 Jingwu Weiqi Road, Jinan, Shandong, 250021, P.R. China
| | - Shan Li
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, No. 324 Jingwu Weiqi Road, Jinan, Shandong, 250021, P.R. China
| | - Yanling Sui
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, No. 324 Jingwu Weiqi Road, Jinan, Shandong, 250021, P.R. China
| | - Qinjian Sun
- Department of Neurology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, China.
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, No. 324 Jingwu Weiqi Road, Jinan, Shandong, 250021, P.R. China.
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Li X, Liu C, Zhu L, Wang M, Liu Y, Li S, Deng Q, Zhou J. The Role of High-Resolution Magnetic Resonance Imaging in Cerebrovascular Disease: A Narrative Review. Brain Sci 2023; 13:brainsci13040677. [PMID: 37190642 DOI: 10.3390/brainsci13040677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/07/2023] [Accepted: 04/13/2023] [Indexed: 05/17/2023] Open
Abstract
High-resolution magnetic resonance imaging (HRMRI) is the most important and popular vessel wall imaging technique for the direct assessment of vessel wall and cerebral arterial disease. It can identify the cause of stroke in high-risk plaques and differentiate the diagnosis of head and carotid artery dissection, including inflammation, Moya Moya disease, cerebral aneurysm, vasospasm after subarachnoid hemorrhage, reversible cerebral vasoconstriction syndrome, blunt cerebrovascular injury, cerebral arteriovenous malformations, and other stenosis or occlusion conditions. Through noninvasive visualization of the vessel wall in vitro, quantified assessment of luminal stenosis and pathological features of the vessel wall can provide clinicians with further disease information. In this report, technical considerations of HRMRI are discussed, and current clinical applications of HRMRI are reviewed.
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Affiliation(s)
- Xiaohui Li
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Chengfang Liu
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Lin Zhu
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Meng Wang
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Yukai Liu
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Shuo Li
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Qiwen Deng
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China
| | - Junshan Zhou
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
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12
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Choi D, Kim T, Jang J, Sunwoo L, Lee KJ. Intracranial steno-occlusive lesion detection on time-of-flight MR angiography using multi-task learning. Comput Med Imaging Graph 2023; 107:102220. [PMID: 37023509 DOI: 10.1016/j.compmedimag.2023.102220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 03/04/2023] [Accepted: 03/19/2023] [Indexed: 03/28/2023]
Abstract
Steno-occlusive lesions in intracranial arteries refer to segments of narrowed or occluded blood vessels that increase the risk of ischemic strokes. Steno-occlusive lesion detection is crucial in clinical settings; however, automatic detection methods have hardly been studied. Therefore, we propose a novel automatic method to detect steno-occlusive lesions in sequential transverse slices on time-of-flight magnetic resonance angiography. Our method simultaneously detects lesions while segmenting blood vessels based on end-to-end multi-task learning, reflecting that the lesions are closely related to the connectivity of blood vessels. We design classification and localization modules that can be attached to arbitrary segmentation network. As blood vessels are segmented, both modules simultaneously predict the presence and location of lesions for each transverse slice. By combining outputs from the two modules, we devise a simple operation that boosts the performance of lesion localization. Experimental results show that lesion prediction and localization performance is improved by incorporating blood vessel extraction. Our ablation study demonstrates that the proposed operation enhances lesion localization accuracy. We also verify the effectiveness of multi-task learning by comparing our approach with those that individually detect lesions with extracted blood vessels.
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Zhao X, Meng L, Tong X, Xu X, Wang W, Miao Z, Mo D. A novel computational fluid dynamic method and validation for assessing distal cerebrovascular microcirculatory resistance. Comput Methods Programs Biomed 2023; 230:107338. [PMID: 36640605 DOI: 10.1016/j.cmpb.2023.107338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 01/02/2023] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND AND OBJECTIVE The non-invasive assessment of microcirculatory resistance could improve the treatment of cerebrovascular stenosis. This study aimed to validate a novel computational strategy for determining the reference value of microcirculatory resistance in patients with cerebrovascular stenosis. METHODS We reconstructed a patient-specific 3-dimensional model of the extracranial-intracranial arteries. A computational strategy incorporating patient-specific pressure-wire measurements was developed to estimate the blood flow rate and microcirculatory resistance. Throughout the computational fluid dynamics (CFD) simulation, the boundary conditions were adjusted according to the developed algorithm. Pearson correlation and Bland-Altman analyses were used to quantify the correlation and agreement between CFD calculations and transcranial Doppler (TCD) assessment. RESULTS A strong correlation was found between the CFD-based and invasive distal pressure measurements (P<0.0001). Meanwhile, the CFD and TCD-based flow measurements were highly correlated (r = 0.853; P = 0.001). Furthermore, there was a correlation between the mean velocity measured by CFD and the mean velocity measured by TCD (r = 0.777; P<0.001). Good agreement was observed between the mass flow by CFD simulation and volumetric flow by TCD (P = 0.0266, mean difference: -0.7814 mmHg, limits of agreement, -4.0905 - 2.5276). However, the mean velocities from CFD simulation were in less agreement with those from the TCD assessment (P = 0.3992, mean difference, -0.0485; limits of agreement, -0.6141 - 0.5170). Results of the CFD simulation indicate that the flow resistance varies greatly between individuals. CONCLUSIONS The computational strategy of incorporating patient-specific pressure-wire measurements may serve as an effective approach to evaluate the actual reference values of microcirculatory resistance. In addition, an individualized assessment of non-invasive flow resistance is necessary for the accurate determination of non-invasive cerebrovascular pressure.
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Affiliation(s)
- Xi Zhao
- Central Research Institute, United Imaging Healthcare, Shanghai, China.
| | | | - Xu Tong
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xiaotong Xu
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | | | - Zhongrong Miao
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Dapeng Mo
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
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Luo J, Wang T, Yang K, Wang X, Xu R, Gong H, Zhang X, Wang J, Yang R, Gao P, Ma Y, Jiao L. Endovascular therapy versus medical treatment for symptomatic intracranial artery stenosis. Cochrane Database Syst Rev 2023; 2:CD013267. [PMID: 36738471 PMCID: PMC9897029 DOI: 10.1002/14651858.cd013267.pub3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Intracranial artery stenosis (ICAS) is an arterial narrowing in the brain that can cause stroke. Endovascular therapy (ET) and conventional medical treatment (CMT) may prevent recurrent ischaemic stroke caused by ICAS. However, there is no consensus on the best treatment for people with ICAS. OBJECTIVES To evaluate the safety and efficacy of endovascular therapy plus conventional medical treatment compared with conventional medical treatment alone for the management of symptomatic intracranial artery stenosis. SEARCH METHODS We searched the Cochrane Stroke Group Trials Register, CENTRAL, MEDLINE, Embase, four other databases, and three trials registries on 16 August 2022. We contacted study authors and researchers when we required additional information. SELECTION CRITERIA We included randomised controlled trials (RCTs) comparing ET plus CMT with CMT alone for the treatment of symptomatic ICAS. ET modalities included angioplasty alone, balloon-mounted stent, and angioplasty followed by placement of a self-expanding stent. CMT included antiplatelet therapy in addition to control of risk factors such as hypertension, hyperlipidaemia, and diabetes. DATA COLLECTION AND ANALYSIS Two review authors independently screened the records to select eligible RCTs, then extracted data from them. We resolved any disagreements through discussion, reaching consensus decisions among the full team. We assessed risk of bias and applied the GRADE approach to assess the certainty of the evidence. The primary outcome was death by any cause or non-fatal stroke of any type within three months of randomisation. Secondary outcomes included all-cause death or non-fatal stroke of any type occurring more than three months after randomisation, ipsilateral stroke, transient ischaemic attack, ischaemic stroke, haemorrhagic stroke, death, restenosis, dependency, and health-related quality of life. MAIN RESULTS We included four RCTs with 989 participants who had symptomatic ICAS, with an age range of 18 to 85 years. We identified two ongoing RTCs. All trials had high risk of performance bias, as it was impossible to blind participants and personnel to the intervention. Three trials were terminated early. One trial was at high risk of attrition bias because of substantial loss to follow-up after one year and a high proportion of participants transferring from ET to CMT. The certainty of evidence ranged from low to moderate; we downgraded for imprecision. Compared to CMT alone, ET plus CMT probably increases the risk of short-term death or stroke (risk ratio (RR) 2.93, 95% confidence interval (CI) 1.81 to 4.75; 4 RCTs, 989 participants; moderate certainty), short-term ipsilateral stroke (RR 3.26, 95% CI 1.94 to 5.48; 4 RCTs, 989 participants; moderate certainty), short-term ischaemic stroke (RR 2.24, 95% CI 1.30 to 3.87; 4 RCTs, 989 participants; moderate certainty), and long-term death or stroke (RR 1.49, 95% CI 1.12 to 1.99; 4 RCTs, 970 participants; moderate certainty). Compared to CMT alone, ET plus CMT may increase the risk of short-term haemorrhagic stroke (RR 13.49, 95% CI 2.59 to 70.15; 4 RCTs, 989 participants; low certainty), short-term death (RR 5.43, 95% CI 1.21 to 24.40; 4 RCTs, 989 participants; low certainty), and long-term haemorrhagic stroke (RR 7.81, 95% CI 1.43 to 42.59; 3 RCTs, 879 participants; low certainty). It is unclear if ET plus CMT compared with CMT alone has an effect on the risk of short-term transient ischaemic attack (RR 0.79, 95% CI 0.30 to 2.07; 3 RCTs, 344 participants; moderate certainty), long-term transient ischaemic attack (RR 1.05, 95% CI 0.50 to 2.19; 3 RCTs, 335 participants; moderate certainty), long-term ipsilateral stroke (RR 1.78, 95% CI 1.00 to 3.17; 4 RCTs, 970 participants; moderate certainty), long-term ischaemic stroke (RR 1.56, 95% CI 0.77 to 3.16; 4 RCTs, 970 participants; moderate certainty), long-term death (RR 1.61, 95% CI 0.77 to 3.38; 4 RCTs, 951 participants; moderate certainty), and long-term dependency (RR 1.51, 95% CI 0.93 to 2.45; 4 RCTs, 947 participants; moderate certainty). No subgroup analyses significantly modified the effect of ET plus CMT versus CMT alone. The trials included no data on restenosis or health-related quality of life. AUTHORS' CONCLUSIONS This review provides moderate-certainty evidence that ET plus CMT compared with CMT alone increases the risk of short-term stroke and death in people with recent symptomatic severe ICAS. This effect was still apparent at long-term follow-up but appeared to be due to the early risks of ET; therefore, there may be no clear difference between the interventions in terms of their effects on long-term stroke and death. The impact of delayed ET intervention (more than three weeks after a qualifying event) warrants further study.
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Affiliation(s)
- Jichang Luo
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Tao Wang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Kun Yang
- Department of Evidence-based Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xue Wang
- Medical Library of Xuanwu Hospital, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Ran Xu
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Haozhi Gong
- China International Neuroscience Institute (China-INI), Beijing, China
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xiao Zhang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Jie Wang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Renjie Yang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Peng Gao
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Yan Ma
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Liqun Jiao
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
- Department of Interventional Radiology, Xuanwu Hospital, Capital Medical University, Beijing, China
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Dimas GG, Zilakaki M, Giannopoulos A, Daios S, Kakaletsis N, Kaiafa G, Didangelos T, Savopoulos C, Ktenidis K, Tegos T. Assessment of Atherosclerosis in Ischemic Stroke by means of Ultrasound of Extracranial/Intracranial Circulation and Serum, Urine, and Tissue Biomarkers. Curr Med Chem 2023; 30:1107-1121. [PMID: 35980067 DOI: 10.2174/0929867329666220817123442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/27/2022] [Accepted: 05/05/2022] [Indexed: 11/22/2022]
Abstract
It is a common practice to take into consideration age, diabetes, smoking, treated and untreated systolic blood pressure, total cholesterol, and high-density lipoprotein cholesterol for the prediction of atherosclerosis and stroke. There are, however, ultrasound markers in use for the assessment of atherosclerosis and the evaluation of stroke risk. Two areas of investigation are of interest: the carotid artery and the intracranial arterial circulation. Again, within the domain of the carotid artery, two ultrasonic markers have attracted our attention: intima media thickness of the carotid artery and the presence of carotid plaque with its various focal characteristics. In the domain of intracranial circulation, the presence of arterial stenosis and the recruitment of collaterals are considered significant ultrasonic markers for the above-mentioned purpose. On the other hand, a series of serum, urine, and tissue biomarkers are found to be related to atherosclerotic disease. Future studies might address the issue of whether the addition of proven ultrasonic carotid indices to the aforementioned serum, urine, and tissue biomarkers could provide the vascular specialist with a better assessment of the atherosclerotic load and solidify their position as surrogate markers for the evaluation of atherosclerosis and stroke risk.
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Affiliation(s)
- Grigorios G Dimas
- First Propedeutic Department of Internal Medicine, Aristotle University of Thessaloniki, AHEPA University Hospital of Thessaloniki, Greece
| | - Maria Zilakaki
- First Neurology Department, Medical School, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, 54636, Greece
| | - Argyrios Giannopoulos
- Department of Vascular Surgery, Aristotle University of Thessaloniki, AHEPA University Hospital of Thessaloniki, Greece
| | - Stylianos Daios
- First Propedeutic Department of Internal Medicine, Aristotle University of Thessaloniki, AHEPA University Hospital of Thessaloniki, Greece
| | - Nikolaos Kakaletsis
- First Propedeutic Department of Internal Medicine, Aristotle University of Thessaloniki, AHEPA University Hospital of Thessaloniki, Greece
| | - Georgia Kaiafa
- First Propedeutic Department of Internal Medicine, Aristotle University of Thessaloniki, AHEPA University Hospital of Thessaloniki ,Greece
| | - Triantafyllos Didangelos
- First Propedeutic Department of Internal Medicine, Aristotle University of Thessaloniki, AHEPA University Hospital of Thessaloniki, Greece
| | - Christos Savopoulos
- First Propedeutic Department of Internal Medicine, Aristotle University of Thessaloniki, AHEPA University Hospital of Thessaloniki, Greece
| | - Kyriakos Ktenidis
- Department of Vascular Surgery, Aristotle University of Thessaloniki, AHEPA University Hospital of Thessaloniki, Greece
| | - Thomas Tegos
- First Neurology Department, Medical School, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, 54636, Greece
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Maitas O, Bob-Manuel T, Price J, Noor A, Obi K, Okoh N, Garikapati K, Kim J, Jahan S, Jenkins JS. Vertebral Artery Interventions: A Comprehensive Updated Review. Curr Cardiol Rev 2023; 19:e170322202296. [PMID: 35301953 PMCID: PMC10201878 DOI: 10.2174/1573403x18666220317093131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 11/01/2021] [Accepted: 11/08/2021] [Indexed: 02/08/2023] Open
Abstract
Patients with posterior circulation ischemia due to vertebral artery stenosis account for 20 to 25% of ischemic strokes and have an increased risk of recurrent stroke. In patients treated with medical therapy alone, the risk of recurrence is particularly increased in the first few weeks after symptoms occur, with an annual stroke rate of 10 to 15%. Additionally, obstructive disease of the vertebrobasilar system carries a worse prognosis, with a 30% mortality at 2-years if managed medically without additional surgical or endovascular intervention. Percutaneous transluminal angioplasty and stenting of symptomatic vertebral artery stenosis are promising options widely used in clinical practice with good technical results; however, the improved clinical outcome has been examined in various clinical trials without a sufficient sample size to conclusively determine whether stenting is better than medical therapy. Surgical revascularization is an alternative approach for the treatment of symptomatic vertebral artery stenosis that carries a 10-20% mortality rate. Despite the advances in medical therapy and endovascular and surgical options, symptomatic vertebral artery stenosis continues to impose a high risk of stroke recurrence with associated high morbidity and mortality. This review aims to provide a focused update on the percutaneous treatment of vertebral artery stenosis, its appropriate diagnostic approach, and advances in medical therapies.
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Affiliation(s)
- Oscar Maitas
- John Ochsner Heart and Vascular Center, New Orleans, LA, USA
| | | | - Justin Price
- John Ochsner Heart and Vascular Center, New Orleans, LA, USA
| | - Abdullah Noor
- John Ochsner Heart and Vascular Center, New Orleans, LA, USA
| | - Koyenum Obi
- John Ochsner Heart and Vascular Center, New Orleans, LA, USA
| | - Nelson Okoh
- Rutgers Community Hospital, West Toms River, NJ, USA
| | - Kiran Garikapati
- Department of Internal Medicine, Unity Hospital/Rochester Regional Health Rochester NY, USA
| | - Jeong Kim
- Department of Internal Medicine, Unity Hospital/Rochester Regional Health Rochester NY, USA
| | - Sanjida Jahan
- Department of Internal Medicine, Unity Hospital/Rochester Regional Health Rochester NY, USA
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Zhang J, Wang S, Chen Y, Li C, Wang L. Neck-brain integrated ultrasound as a noninvasive screening tool to identify morphological features of middle cerebral artery disease. Atherosclerosis 2022; 363:85-93. [PMID: 36210242 DOI: 10.1016/j.atherosclerosis.2022.09.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 09/08/2022] [Accepted: 09/28/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIMS Endovascular treatment is suitable for middle cerebral artery (MCA) with focal lesion. Therefore, accurate evaluation of the morphological features of MCA disease is critical. Ultrasonography is commonly used to screen for MCA lesions. However, there are few studies on lesion length. Using ultrasonography, we aimed to prospectively evaluate MCA disease with focal stenosis, long stenosis, focal occlusion, and long occlusion. METHODS Patients with symptomatic MCA disease scheduled for digital subtraction angiography were enrolled. The ultrasonic parameters recorded included mean flow velocity at MCA (VMCA) and extracranial internal carotid artery (VICA), bilateral VMCA ratio, bilateral VICA ratio, and MCA flow continuity. RESULTS A total of 278 MCAs were included. Compared to normal vessels, the bilateral VMCA ratio increased in the focal stenosis group and decreased in the long lesion and focal occlusion groups (all p < 0.05); the VICA and bilateral VICA ratio decreased in the long lesion group (all p < 0.01), and there was no significant difference in the focal lesion group (all p > 0.05). The optimal cut-offs were bilateral VMCA ratio <0.80 to predict long lesions and focal occlusions (sensitivity: 0.898, specificity: 0.975), and bilateral VICA ratio <0.84 to predict long lesions (sensitivity: 0.704, specificity: 0.879). The sensitivity and specificity to predict long occlusions were 96.7% and 94.8%, respectively, in the absence of MCA flow continuity. CONCLUSIONS Neck-brain integrated ultrasound is an appropriate screening method for identifying MCA lesions with different morphologies. Endovascular treatment might not be recommended when bilateral VICA ratio <0.84 in patients with MCA lesions.
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Affiliation(s)
- Jie Zhang
- Neuroscience Center, Department of Neurology, First Hospital of Jilin University, Jilin University, Changchun, China
| | - Shouchun Wang
- Neuroscience Center, Department of Neurology, First Hospital of Jilin University, Jilin University, Changchun, China
| | - Ying Chen
- Neuroscience Center, Department of Neurology, First Hospital of Jilin University, Jilin University, Changchun, China
| | - Cong Li
- Neuroscience Center, Department of Neurology, First Hospital of Jilin University, Jilin University, Changchun, China
| | - Lijuan Wang
- Neuroscience Center, Department of Neurology, First Hospital of Jilin University, Jilin University, Changchun, China.
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18
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Ishaque N, Khan K, Shuaib A. Monitoring intracranial atherosclerosis with transcranial and extracranial carotid Doppler: A promising initial step. Atherosclerosis 2022; 363:73-74. [PMID: 36418212 DOI: 10.1016/j.atherosclerosis.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 10/21/2022] [Accepted: 11/02/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Noman Ishaque
- Division of Neurology, Department of Medicine, University of Alberta, Edmonton, Canada
| | - Khurshid Khan
- Division of Neurology, Department of Medicine, University of Alberta, Edmonton, Canada
| | - Ashfaq Shuaib
- Division of Neurology, Department of Medicine, University of Alberta, Edmonton, Canada.
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Zhang J, Xing Y, Cui L. Duplex Ultrasonography for the Evaluation of Extracranial Vertebral Artery: A Prospective Comparison With Digital Subtraction Angiography. Front Neurol 2022; 13:814972. [PMID: 35832174 PMCID: PMC9271613 DOI: 10.3389/fneur.2022.814972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 05/31/2022] [Indexed: 12/24/2022] Open
Abstract
Background and Objective Patients with symptomatic vertebral artery stenosis are at high risk of stroke recurrence, especially ≥70% stenosis. Revascularization may be considered for extracranial vertebral artery stenosis in patients with recurrent ischemic events despite optimal medical management. Currently, there is a lack of consensus on the ultrasonic evaluation of extracranial vertebral artery stenosis in clinical practice. This study aimed to validate the efficiency of duplex ultrasonography and assess the optimal sonographic thresholds for predicting extracranial vertebral artery stenosis. Methods This is a prospective study of all patients with symptomatic posterior circulation stroke/transient ischemic attack who were scheduled to undergo digital subtraction angiography from April 2020 to October 2021. A total of 544 vertebral arteries with a normal lumen or extracranial stenosis confirmed with digital subtraction angiography were included in the study. The peak systolic velocity at the V1 segment (PSVv1) and the V2 segment (PSVv2) were measured and the PSVv1/PSVv2 and PSVv2/PSVv1 ratios were calculated. The cutoff values were determined using receiver operating characteristic analysis. Results The areas under the receiver operating characteristic curve of all the velocity parameters to predict extracranial vertebral artery stenosis were >0.80. The cutoff values for predicting ≥50% and ≥70% V1 segment stenosis were PSVv1 ≥146 cm/s (sensitivity 76.2%, specificity 86.3%) and PSVv1/PSVv2 ratio ≥2.2 (sensitivity 84.3%, specificity 77.6%), and PSVv1 ≥184 cm/s (sensitivity 80.8%, specificity 87.1%) and PSVv1/PSVv2 ratio ≥3.5 (sensitivity 79.5%, specificity 90.5%), respectively. The cutoff values for predicting ≥50% and ≥70% V2 segment stenosis were PSVv2 ≥80 cm/s (sensitivity 75.0%, specificity 91.0%) and PSVv2/PSVv1 ratio ≥1.2 (sensitivity 75.0%, specificity 94.8%), and PSVv2 ≥111 cm/s (sensitivity 81.0%, specificity 95.0%) and PSVv2/PSVv1 ratio ≥1.7 (sensitivity 81.0%, specificity 96.6%), respectively. Conclusion Symptomatic patients with the ultrasonic parameters of PSVv1 ≥146 cm/s and PSVv1/PSVv2 ratio ≥2.2 at V1 segment or PSVv2 ≥80 cm/s and PSVv2/PSVv1 ratio ≥1.2 at V2 segment need to be considered for further verification by digital subtraction angiography to seek revascularization. If the parameters increase to PSVv1 ≥184 cm/s and PSVv1/PSVv2 ratio ≥3.5 at the V1 segment or PSVv2 ≥111 cm/s and PSVv2/PSVv1 ratio ≥1.7 at the V2 segment, these patients have an increased risk of recurrent stroke and are more likely to need revascularization. The results can be used as a reference for the assessment and long-term management of patients with extracranial VA stenosis.
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Affiliation(s)
- Jie Zhang
- Department of Neurology, Neuroscience Center, First Hospital of Jilin University, Jilin University, Changchun, China
| | - Yingqi Xing
- Department of Vascular Ultrasonography, Center of Vascular Ultrasonography, Xuanwu Hospital, Capital Medical University, Beijing, China
- *Correspondence: Yingqi Xing
| | - Li Cui
- Department of Neurology, Neuroscience Center, First Hospital of Jilin University, Jilin University, Changchun, China
- Li Cui
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Wang X, Qiao T, Liu M, Wang X. Homocysteine Associated With Low Cognitive Function Independent of Asymptomatic Intracranial and Carotid Arteries Stenoses in Chinese Elderly Patients: An Outpatient-Based Cross-Sectional Study. J Geriatr Psychiatry Neurol 2022; 35:302-308. [PMID: 33504251 DOI: 10.1177/0891988720988914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
INTRODUCTION A high homocysteine (Hcy) concentration is correlated with cognitive impairment; however, the exact underlying mechanism is still not fully elucidated. The present study aimed to investigate whether asymptomatic intracranial and carotid arteries stenoses are involved in Hcy-related low cognitive function. METHODS This was a cross-sectional study in outpatient clinics. Residents aged ≥60 years, who came to the Stroke and Rehabilitation Clinic of Shandong Provincial Third Hospital in Jinan, Shandong Province from December 2019 to May 2020 to seek consultation due to abnormal transcranial Doppler reports (eg., increased cerebral blood flow velocity) were eligible. Information including demographics, medical history, lifestyle habits were collected. Fasting blood was used to detect total serum homocysteine level (tHcy). Cerebrovascular magnetic resonance angiography and neck vascular ultrasound examination were used to confirm the diagnosis of intracranial and carotid artery stenoses. The Mini-Mental State Examination was used to assess the cognitive function of each participant. Logistic regression was used to evaluate the relationship between tHcy levels and cognitive function. RESULTS This study included 236 participants (mean age: 64.0 (SD, 7.5) years, female: 58.1%). Multivariable analyses adjusted for several potential confounders, including creatinine and cardiovascular risk factors, showed that tHcy was associated with carotid artery stenosis (CAS). After adjusting for CAS, ICAS and several potential confounders, the association between tHcy level and low cognitive function remained significant (odds ratio: 1.09, 95% confidence interval: (1.03, 1.16), P = 0.032) . CONCLUSION Increased serum tHcy level was associated with low cognitive function independent of asymptomatic intracranial and carotid arteries stenoses.
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Affiliation(s)
- Xiaona Wang
- Department of Rehabilitation, 34708Shandong Provincial Third Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shangdong Province, China
| | - Tian Qiao
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Min Liu
- Department of Rehabilitation, 34708Shandong Provincial Third Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shangdong Province, China
| | - Xiang Wang
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.,Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
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Pan Y, Wan W, Xiang M, Guan Y. Transcranial Doppler Ultrasonography as a Diagnostic Tool for Cerebrovascular Disorders. Front Hum Neurosci 2022; 16:841809. [PMID: 35572008 PMCID: PMC9101315 DOI: 10.3389/fnhum.2022.841809] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 03/04/2022] [Indexed: 01/08/2023] Open
Abstract
Imaging techniques including transcranial Doppler (TCD), magnetic resonance imaging (MRI), computed tomography (CT), and cerebral angiography are available for cerebrovascular disease diagnosis. TCD is a less expensive, non-invasive, and practically simpler approach to diagnosing cerebrovascular disorders than the others. TCD is a commonly available and inexpensive diagnostic tool. However, owing to its large operator dependency, it has a narrow application area. Cerebrovascular disease indicates a group of disorders that alter the flow of blood in the brain. The brain’s functions can be temporarily or permanently impaired as a result of this change in blood flow. Timely diagnosis and treatment can restore the brain-impaired functions, resulting in a much-improved prognosis for the patients. This review summarizes the basic principles underlying the TCD imaging technique and its utility as a diagnostic tool for cerebrovascular disease.
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Turan TN, Zaidat OO, Gronseth GS, Chimowitz MI, Culebras A, Furlan AJ, Goldstein LB, Gonzalez NR, Latorre JG, Messé SR, Nguyen TN, Sangha RS, Schneck MJ, Singhal AB, Wechsler LR, Rabinstein AA, Dolan O'Brien M, Silsbee H, Fletcher JJ. Stroke Prevention in Symptomatic Large Artery Intracranial Atherosclerosis Practice Advisory: Report of the AAN Guideline Subcommittee. Neurology 2022; 98:486-498. [PMID: 35314513 DOI: 10.1212/wnl.0000000000200030] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 01/03/2022] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND AND OBJECTIVES To review treatments for reducing the risk of recurrent stroke or death in patients with symptomatic intracranial atherosclerotic arterial stenosis (sICAS). METHODS The development of this practice advisory followed the process outlined in the American Academy of Neurology Clinical Practice Guideline Process Manual, 2011 Edition, as amended. The systematic review included studies through November 2020. Recommendations were based on evidence, related evidence, principles of care, and inferences. MAJOR RECOMMENDATIONS Clinicians should recommend aspirin 325 mg/d for long-term prevention of stroke and death and should recommend adding clopidogrel 75 mg/d to aspirin for up to 90 days to further reduce stroke risk in patients with severe (70%-99%) sICAS who have low risk of hemorrhagic transformation. Clinicians should recommend high-intensity statin therapy to achieve a goal low-density lipoprotein cholesterol level <70 mg/dL, a long-term blood pressure target of <140/90 mm Hg, at least moderate physical activity, and treatment of other modifiable vascular risk factors for patients with sICAS. Clinicians should not recommend percutaneous transluminal angioplasty and stenting for stroke prevention in patients with moderate (50%-69%) sICAS or as the initial treatment for stroke prevention in patients with severe sICAS. Clinicians should not routinely recommend angioplasty alone or indirect bypass for stroke prevention in patients with sICAS outside clinical trials. Clinicians should not recommend direct bypass for stroke prevention in patients with sICAS. Clinicians should counsel patients about the risks of percutaneous transluminal angioplasty and stenting and alternative treatments if one of these procedures is being contemplated.
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Affiliation(s)
- Tanya N Turan
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Osama O Zaidat
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Gary S Gronseth
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Marc I Chimowitz
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Antonio Culebras
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Anthony J Furlan
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Larry B Goldstein
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Nestor R Gonzalez
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Julius G Latorre
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Steven R Messé
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Thanh N Nguyen
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Rajbeer S Sangha
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Michael J Schneck
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Aneesh B Singhal
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Lawrence R Wechsler
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Alejandro A Rabinstein
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Mary Dolan O'Brien
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
| | - Heather Silsbee
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids.
| | - Jeffrey J Fletcher
- From the Department of Neurology (T.N.T., M.I.C.), Medical University of South Carolina, Charleston; Department of Neurology (O.O.Z.), Mercy Health, Toledo, OH; Department of Neurology (G.S.G.), University of Kansas, Kansas City, MO; Department of Neurology (A.C., J.G.L.), SUNY Upstate Medical University, Syracuse, NY; Department of Neurology (A.J.F.), Cleveland Medical Center, OH; Department of Neurology (L.B.G.), University of Kentucky, Lexington; Department of Neurosurgery (N.R.G.), Cedars-Sinai Medical Center, Los Angeles, CA; Department of Neurology (S.R.M., L.R.W.), University of Pennsylvania, Philadelphia; Departments of Neurology and Radiology (T.N.N.), Boston Medical Center, MA; Department of Neurology (R.S.S.), University of Alabama, Birmingham; Department of Neurosurgery (M.J.S.), Loyola University Chicago, Maywood, IL; Department of Neurology (A.B.S.), Massachusetts General Hospital, Boston; Department of Neurology (A.A.R.), Mayo Clinic, Rochester; American Academy of Neurology (M.D.O., H.S.), Minneapolis, MN; and Department of Neurosurgery (J.J.F.), University of Michigan Health-West, Grand Rapids
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Zhao Y, Dang L, Tian X, Yang M, Lv M, Sun Q, Du Y. Association Between Intracranial Pulsatility and White Matter Hyperintensities in Asymptomatic Intracranial Arterial Stenosis: A Population-Based Study in Shandong, China. J Stroke Cerebrovasc Dis 2022; 31:106406. [PMID: 35248835 DOI: 10.1016/j.jstrokecerebrovasdis.2022.106406] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/09/2022] [Accepted: 02/13/2022] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES The effects of increased intracranial pulsatility on the severity of white matter hyperintensities (WMH) in participants with asymptomatic intracranial arterial stenosis (aICAS) remain uncertain. We aimed to investigate whether an increased pulsatility index (PI) is associated with WMH volume (WMHV) in individuals with aICAS. MATERIALS AND METHODS All participants were recruited from the Kongcun Town aICAS Study, including a total of 103 participants with aICAS and 98 healthy controls (age- and sex-matched). PI was assessed using transcranial Doppler ultrasound. The WMHV was calculated through the lesion segmentation tool system for the Statistical Parametric Mapping package based on magnetic resonance imaging. The association between PI and lnWMHV was analyzed by linear regression models adjusting for demographics, lifestyle, and vascular risk factors. RESULTS The lnWMHV and PI between the aICAS and control groups showed no significant differences (P = 0.171 and 0.287, respectively). In a multivariable model, age ≥ 60 years and male sex (P = 0.000 and 0.006, respectively) were significant predictors of lnWMHV in the aICAS group. In sex-stratified analyses, there was a significant association between PI and lnWMHV in males with aICAS (P = 0.038). CONCLUSIONS This study suggest there might be a likely association between increased intracranial pulsatility and WMH burden in males with aICAS.
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Affiliation(s)
- Yuanyuan Zhao
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Liang Dang
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Xue Tian
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Meilan Yang
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Ming Lv
- Department of Clinical Epidemiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Qinjian Sun
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
| | - Yifeng Du
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
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Zhang J, Wang L, Chen Y, Wang S, Cui L. Non-invasive Detection of Diffuse Intracranial Vertebrobasilar Artery Stenosis: A Prospective Comparison with Digital Subtraction Angiography. Ultrasound Med Biol 2022; 48:554-564. [PMID: 34996653 DOI: 10.1016/j.ultrasmedbio.2021.11.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 10/24/2021] [Accepted: 11/30/2021] [Indexed: 06/14/2023]
Abstract
The aim of this study was to prospectively evaluate diffuse intracranial vertebrobasilar artery stenosis by ultrasonic examination with digital subtraction angiography as the reference. Five hundred forty-one vertebrobasilar arteries with a normal lumen or intracranial stenosis were enrolled. Peak systolic velocity, mean flow velocity and end-diastolic velocity (EDV) at the intracranial vertebrobasilar arteries and extracranial vertebral arteries (VAs) were measured. The resistance index (RI) at extracranial VAs and the difference between the RI of extracranial VAs and the RI of the extracranial internal carotid artery (RIica) were calculated. Compared with normal arteries, all stenotic arteries were divided into the high-velocity group (focal stenosis, multiple-segment stenosis and multiple-artery stenosis) and low-velocity group (critical stenosis and long stenosis). The consistency between ultrasonic examination and digital subtraction angiography for evaluation of vertebrobasilar arteries with multiple-segment stenosis and multiple-artery stenosis was not favorable when applying the widely used Stroke Outcomes and Neuroimaging of Intracranial Atherosclerosis criteria (κ = 0.442 and 0.438, respectively). The optimal low-velocity criteria for identifying intracranial vertebrobasilar arteries with critical stenosis and long stenosis were determined by receiver operating characteristic curve analysis and were as follows: EDV ≤15 cm/s and RI ≥0.68 at the extracranial VA and RIica ≥0.10.
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Affiliation(s)
- Jie Zhang
- Neuroscience Center, Department of Neurology, First Hospital of Jilin University, Jilin University, Changchun, China
| | - Lijuan Wang
- Neuroscience Center, Department of Neurology, First Hospital of Jilin University, Jilin University, Changchun, China
| | - Ying Chen
- Neuroscience Center, Department of Neurology, First Hospital of Jilin University, Jilin University, Changchun, China
| | - Sibo Wang
- Neuroscience Center, Department of Neurology, First Hospital of Jilin University, Jilin University, Changchun, China
| | - Li Cui
- Neuroscience Center, Department of Neurology, First Hospital of Jilin University, Jilin University, Changchun, China.
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Gutierrez J, Turan TN, Hoh BL, Chimowitz MI. Intracranial atherosclerotic stenosis: risk factors, diagnosis, and treatment. Lancet Neurol 2022; 21:355-368. [DOI: 10.1016/s1474-4422(21)00376-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 10/14/2021] [Accepted: 10/19/2021] [Indexed: 12/13/2022]
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Abstract
Intracranial atherosclerotic disease is one of the leading causes of ischemic strokes and poses a moderate risk of recurrence. Diagnosis is currently limited to stenosis on luminal imaging, which likely underestimates the true prevalence of the disease. Detection of non-stenosing intracranial atherosclerosis is important in order to optimize secondary stroke prevention strategies. This review collates findings from the early seminal trials and the latest studies in advanced radiological techniques that characterize symptomatic intracranial atherosclerotic disease across various imaging modalities. While computed tomography angiography (CTA) and magnetic resonance angiography (MRA) comprise diagnostic mainstays in identifying stenotic changes secondary to atherosclerosis, emerging techniques such as high-resolution MRA, quantitative MRA, and computational fluid dynamics may reveal a myriad of other underlying pathophysiological mechanisms.
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Affiliation(s)
- Song J Kim
- Vascular Neurology and Neurocritical Care, Sutter Health Comprehensive Stroke Care Center, San Francisco, CA, USA
| | - David J Schneider
- Cardiovascular Research Institute of Vermont, The University of Vermont, Colchester, VT, USA
| | - Edward Feldmann
- Neurosciences and Rehabilitation, Baystate Health, Springfield, MA, USA
| | - David S Liebeskind
- Neurovascular Imaging Research Core and UCLA Stroke Center, Los Angeles, CA, USA
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Kešnerová P, Školoudík D, Herzig R, Netuka D, Szegedi I, Langová K. Peripheral Vascular Resistance in Cerebral Arteries in Patients With Carotid Atherosclerosis - Substudy Results of the Atherosclerotic Plaque Characteristics Associated With a Progression Rate of the Plaque and a Risk of Stroke in Patients With the Carotid Bifurcation Plaque Study (ANTIQUE). J Ultrasound Med 2022; 41:237-246. [PMID: 33792942 DOI: 10.1002/jum.15703] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/23/2021] [Accepted: 03/07/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVES Transcranial color-coded duplex sonography (TCCS) enables to measure blood flow characteristics in cerebral vessels, including vascular resistance and pulsatility. The study aims to identify factors influencing pulsatility (PI) and resistance (RI) indices measured using TCCS in patients with carotid atherosclerosis. METHODS Self-sufficient patients with atherosclerotic plaque causing 20-70% carotid stenosis were consecutively enrolled to the study. All patients underwent duplex sonography of cervical arteries and TCCS with measurement of PI and RI in the middle cerebral artery, neurological, and physical examinations. Following data were recorded: age, gender, height, weight, body mass index, systolic and diastolic blood pressure, occurrence of current and previous diseases, surgery, medication, smoking, and daily dose of alcohol. Univariant and multivariant logistic regression analysis were used for identification of the factors influencing RI and PI. RESULTS Totally 1863 subjects were enrolled to the study: 139 healthy controls (54 males, age 55.52 ± 7.05 years) in derivation cohort and 1724 patients (777 males, age 68.73 ± 9.39 years) in validation cohort. The cut off value for RI was 0.63 and for PI 1.21. Independent factors for increased RI/PI were age (odds ratio [OR] = 1.108/1.105 per 1 year), occurrence of diabetes mellitus (OR = 1.767/2.170), arterial hypertension (OR = 1.700 for RI only), width of the carotid plaque (OR = 1.260 per 10% stenosis for RI only), and male gender (OR = 1.530 for PI only; P ˂.01 in all cases). CONCLUSIONS The independent predictors of increased cerebral arterial resistance and/or pulsatility in patients with carotid atherosclerosis were age, arterial hypertension, diabetes mellitus, carotid plaque width, and male gender.
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Affiliation(s)
- Petra Kešnerová
- Department of Neurology, Comprehensive Stroke Center, Second Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic
- Department of Neurology, Comprehensive Stroke Center, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - David Školoudík
- Department of Neurology, Comprehensive Stroke Center, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
- Center for Health Research, Ostrava University Medical Faculty, Ostrava, Czech Republic
- Department of Neurology, Stroke Center, Vítkovice Hospital, Ostrava, Czech Republic
| | - Roman Herzig
- Department of Neurology, Comprehensive Stroke Center, Charles University Faculty of Medicine and University Hospital Hradec Králové, Hradec Králové, Czech Republic
| | - David Netuka
- Department of Neurosurgery, First Faculty of Medicine and University Military Hospital Prague, Prague-Střešovice, Czech Republic
| | - Istvan Szegedi
- Department of Neurology, Debrecen University Faculty of Medicine and University Hospital Debrecen, Debrecen, Hungary
| | - Kateřina Langová
- Department of Biophysics, Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacký University, Olomouc, Czech Republic
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Sattenberg RJ, Atchaneeyasakul K, Meckler J, Saver JL, Gobin YP, Liebeskind DS. Cerebral Angiography. Stroke 2022. [DOI: 10.1016/b978-0-323-69424-7.00049-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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You SH, Kim B, Yang KS, Kim BK, Woo S, Park SE. Development and validation of visual grading system for stenosis in intracranial atherosclerotic disease on time-of-flight magnetic resonance angiography. Eur Radiol 2021. [PMID: 34839372 DOI: 10.1007/s00330-021-08319-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 08/30/2021] [Accepted: 09/02/2021] [Indexed: 12/26/2022]
Abstract
OBJECTIVES Although the overestimation problem of time-of-flight magnetic resonance angiography (TOF-MRA) applying the warfarin-aspirin symptomatic intracranial disease (WASID) method to assess intracranial arterial stenosis has often been suggested, no pertinent grading system for TOF-MRA has been developed. We aimed to develop and evaluate the performance of a visual grading system for intracranial arterial stenosis on TOF-MRA (MRAVICAST). METHODS This single-center cohort study analyzed prospective observational registry data from a comprehensive stroke center between January 2014 and February 2020. Patients with confirmed stenosis of the intracranial large arteries who underwent confirmative digital subtraction angiography (DSA) were included; a 4-point grading system was developed based on physical characteristics of TOF-MRA. The overall diagnostic accuracies of MRAVICAST for each grade, interobserver reproducibility, and positive predictive values for > 50% and > 70% stenoses were evaluated. RESULTS We analyzed 132 segments with intracranial atherosclerotic stenosis from 71 patients (34 men and 37 women; mean age, 61.0 ± 15.25 years; range, 21-89 years). The overall diagnostic accuracy of MRAVICAST (93.9%, 124/132) was higher than that of MRAWASID (50.8%, 67/132) for each grade. The degree of stenosis did not differ significantly between MRAVICAST and DSAWASID (p = .849). Regarding reproducibility, MRAVICAST demonstrated excellent interobserver agreement (ICC, 0.989; 95% CI, 0.979-0.999). The positive predictive values of MRAVICAST for the diagnosis of > 50% and > 70% stenoses were 97.3% and 100.0%, respectively. CONCLUSIONS The new intuitive grading system accurately and reliably determined the degree of stenosis in intracranial arterial atherosclerosis patients. MRAVICAST could be a versatile alternative to MRAWASID for evaluating intracranial arterial stenosis. KEY POINTS • In this retrospective diagnostic study (sample: 132 stenotic segments), the overall accuracy of the visual grading system (MRAVICAST) was 94%, and positive predictive value for > 50% stenosis was 97%. • In the era of medical treatment for intracranial atherosclerotic stenosis, MRAVICAST could be a versatile alternative method to MRAWASID for evaluating intracranial arterial stenosis.
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Wu M, Zhang W, Guo Z, Song J, Zeng Y, Huang Y, Yang Y, Zhang P, Liu J. Separation of normal and impaired dynamic cerebral autoregulation using deep embedded clustering: a proof-of-concept study. Physiol Meas 2021; 42. [PMID: 34167102 DOI: 10.1088/1361-6579/ac0e81] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 06/24/2021] [Indexed: 11/11/2022]
Abstract
Objective. A previous study has shown that a data-driven approach can significantly improve the discriminative power of transfer function analysis (TFA) used to differentiate between normal and impaired cerebral autoregulation (CA) in two groups of data. The data was collected from both healthy subjects (assumed to have normal CA) and symptomatic patients with severe stenosis (assumed to have impaired CA). However, the sample size of the labeled data was relatively small, owing to the difficulty in data collection. Therefore, in this proof-of-concept study, we investigate the feasibility of using an unsupervised learning model to differentiate between normal and impaired CA on TFA variables without requiring labeled data for learning.Approach. Continuous arterial blood pressure (ABP) and cerebral blood flow velocity (CBFV), which were recorded simultaneously for approximately 10 min, were included from 148 subjects (41 healthy subjects, 31 with mild stenosis, 13 with moderate stenosis, 22 asymptomatic patients with severe stenosis, and 41 symptomatic patients with severe stenosis). Tiecks' model was used to generate surrogate data with normal and impaired CA. A recently proposed unsupervised learning model was optimized and applied to separate the normal and impaired CA for both the surrogate data and real data.Main results. It achieved 98.9% and 74.1% accuracy for the surrogate and real data, respectively.Significance. To our knowledge, this is the first attempt to employ an unsupervised data-driven approach to assess CA using TFA. This method enables the development of a classifier to determine the status of CA, which is currently lacking.
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Affiliation(s)
- Menglu Wu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China.,Shenzhen Key Laboratory for Exascale Engineering and Scientific Computing, Shenzhen, People's Republic of China
| | - Wei Zhang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China.,Shenzhen Key Laboratory for Exascale Engineering and Scientific Computing, Shenzhen, People's Republic of China
| | - Zhenni Guo
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun, People's Republic of China
| | - Jianing Song
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China.,Shenzhen Key Laboratory for Exascale Engineering and Scientific Computing, Shenzhen, People's Republic of China
| | - Yuhong Zeng
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China.,Shenzhen Key Laboratory for Exascale Engineering and Scientific Computing, Shenzhen, People's Republic of China
| | - Yuyu Huang
- Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, People's Republic of China
| | - Yi Yang
- Stroke Center, Department of Neurology, the First Hospital of Jilin University, Changchun, People's Republic of China
| | - Pandeng Zhang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, People's Republic of China.,Shenzhen Key Laboratory for Exascale Engineering and Scientific Computing, Shenzhen, People's Republic of China
| | - Jia Liu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, People's Republic of China.,Shenzhen Key Laboratory for Exascale Engineering and Scientific Computing, Shenzhen, People's Republic of China
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Wang X, Yin H, Ji X, Sang S, Shao S, Wang G, Lv M, Xue F, Du Y, Sun Q. Association between homocysteine and white matter hyperintensities in rural-dwelling Chinese people with asymptomatic intracranial arterial stenosis: A population-based study. Brain Behav 2021; 11:e02205. [PMID: 34032023 PMCID: PMC8323025 DOI: 10.1002/brb3.2205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 05/05/2021] [Accepted: 05/10/2021] [Indexed: 01/04/2023] Open
Abstract
PURPOSE Although homocysteine (Hcy) has been proven to be associated with the incidence of white matter hyperintensities (WMH) in patients with stroke, this association remains unclear in participants with asymptomatic intracranial arterial stenosis (aICAS). This study aimed to investigate the association of Hcy with WMH in participants with aICAS. MATERIALS AND METHODS This was a cross-sectional study based on the Kongcun Town Study. Participants diagnosed with aICAS by magnetic resonance angiography in the Kongcun Town Study were enrolled in this study. Data on demographics, lifestyle, medical histories, and Hcy levels were collected via interviews, clinical examinations, and laboratory tests. The volume of WMH was calculated using the lesion segmentation tool system for the Statistical Parametric Mapping package based on magnetic resonance imaging. The association between Hcy and WMH volume was analyzed using linear and logistic regression analyses. RESULTS A total of 137 aICAS participants were enrolled in the present study. Hcy was associated with the incidence of severe WMH (4th quartile, ≥4.20 ml) after adjustment for certain covariates [Hcy as a continuous variable, odds ratio (95% confidence interval) (OR (95% CI)): 1.09 (1.00, 1.19), p = .047; as a categorical variable (Hcy ≥15 μmol/L), OR (95% CI): 3.74 (1.37, 10.19), p = .010)]. After stratification according to the degree of aICAS, this relationship remained significant only in the moderate-to-severe stenosis group (stenosis ≥50%). (Hcy as continuous variable, OR (95% CI): 1.14 (1.02, 1.27), p = .025; as a categorical variable (Hcy ≥15 μmol/L), OR (95% CI): 5.59 (1.40, 15.25), p = .015). CONCLUSION Serum Hcy concentration may be positively associated with the volume of WMH in rural-dwelling Chinese people with moderate-to-severe (stenosis ≥50%) aICAS.
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Affiliation(s)
- Xiang Wang
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Hao Yin
- Department of Neurology, Jining No.1 People's Hospital, Jining, China
| | - Xiaokang Ji
- Department of Biostatistics, School of Public Health, Shandong University, Jinan, China
| | - Shaowei Sang
- Department of Clinical Epidemiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Sai Shao
- Department of Radiology, Shandong Medical Imaging Research Institute, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Guangbin Wang
- Department of Radiology, Shandong Medical Imaging Research Institute, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Ming Lv
- Department of Clinical Epidemiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Fuzhong Xue
- Department of Biostatistics, School of Public Health, Shandong University, Jinan, China
| | - Yifeng Du
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Qinjian Sun
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
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Kleindorfer DO, Towfighi A, Chaturvedi S, Cockroft KM, Gutierrez J, Lombardi-Hill D, Kamel H, Kernan WN, Kittner SJ, Leira EC, Lennon O, Meschia JF, Nguyen TN, Pollak PM, Santangeli P, Sharrief AZ, Smith SC, Turan TN, Williams LS. 2021 Guideline for the Prevention of Stroke in Patients With Stroke and Transient Ischemic Attack: A Guideline From the American Heart Association/American Stroke Association. Stroke 2021; 52:e364-e467. [PMID: 34024117 DOI: 10.1161/str.0000000000000375] [Citation(s) in RCA: 993] [Impact Index Per Article: 331.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Del Brutto VJ, Liebeskind DS, Romano JG, Campo-Bustillo I, Cotsonis G, Nizam A, Prabhakaran S. Risk Factors Control and Early Recurrent Cerebral Infarction in Patients with Symptomatic Intracranial Atherosclerotic Disease. J Stroke Cerebrovasc Dis 2021; 30:105914. [PMID: 34217065 DOI: 10.1016/j.jstrokecerebrovasdis.2021.105914] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 05/16/2021] [Accepted: 05/22/2021] [Indexed: 10/21/2022] Open
Abstract
BACKGROUND The risk of early recurrent cerebral infarction (RCI) is high in patients with symptomatic intracranial atherosclerotic disease (IAD). We sought to determine the relationship between risk factor control and early RCI risk among patients with symptomatic IAD. METHODS We analyzed participants with symptomatic IAD in the multi-center prospective observational MYRIAD study. Risk factor control was assessed at 6-8-week follow-up. Optimal risk factor control was defined by target systolic blood pressure, being non-smoker, target physical activity, and antiplatelet and antilipidemic therapy compliance. Age-adjusted associations were calculated between risk factor control and RCI determined by MRI-evident new infarcts in the territory of the stenotic vessel at 6-8 weeks from the index event. RESULTS Among 82 participants with clinical and brain MRI information available 6-8 weeks after the index event (mean age 63.5 ±12.5 years, 62.2% men), RCI occurred in 21 (25.6%) cases. At 6-8-week follow-up, 37.8% had target systolic blood pressure, 92.7% were non-smokers, 51.2% had target physical activity, and 98.8% and 86.6% were compliant with antiplatelet and antilipidemic therapy, respectively. Optimal risk factor control increased from 4.9% at baseline to 19.5% at 6-8-week follow-up (p=0.01). None of the participants with optimal risk factor control at follow-up had RCI (0% vs. 31.8%, p<0.01). CONCLUSIONS Only one-fifth of MYRIAD participants had optimal risk factor control during early follow-up. Approximately half and two-thirds had physical inactivity and uncontrolled systolic blood pressure, respectively. These risk factors may represent important therapeutic targets to prevent early RCI in patients with symptomatic IAD.
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Affiliation(s)
- Victor J Del Brutto
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL.
| | | | - Jose G Romano
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL.
| | - Iszet Campo-Bustillo
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL.
| | - George Cotsonis
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA.
| | - Azhar Nizam
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA.
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Zhang C, Dou W, Yu K, Ji Y, Wang W, Sami MU, Shen Y, Xu K. The feasibility of non-contrast-enhanced zero echo time magnetic resonance angiography for characterization of intracranial atherosclerotic disease. Quant Imaging Med Surg 2021; 11:2442-2452. [PMID: 34079714 DOI: 10.21037/qims-20-696] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Background Accurate and non-invasive assessment of intracranial atherosclerotic disease (ICAD) is important because of its effect on treatment planning. The aim of this study is to investigate if zero echo time (zTE) magnetic resonance angiography (zTE-MRA) is feasible in the characterization of ICAD. Methods A total of 175 patients with ICAD were recruited. ZTE-MRA and time-of-flight (TOF)-MRA sequences were conducted for all participants using a 3T clinical MR system. Forty-one patients also underwent digital subtraction angiography (DSA), and were confirmed to have intracranial arterial stenosis (ICAS). Weighted kappa (κ) statistics were used to assess the inter-observer agreement and diagnostic consistency of both zTE- and TOF-MRA, using DSA as a reference. The Wilcoxon signed-rank test was used to evaluate differences in image quality between zTE- and TOF-MRA images. The nonparametric test of multiple paired samples was used to compare the results of vascular stenosis diagnosis between zTE-, TOF-MRA and DSA. Results Supported by high inter-observer agreement (weighted κ=0.78), zTE-MRA generated significantly higher scores than TOF-MRA for susceptibility artifact signal (mean: 3.03±0.98 vs. 2.72±1.09; P=0.017) and flow signal in parent artery (mean: 3.63±0.49 vs. 3.07±0.82; P<0.001). Additionally, zTE-MRA showed more robust diagnostic performance than TOF-MRA for patients with ICAD and degree of vascular stenosis (P<0.05), and was highly consistent with reference DSA images (weighted κ=0.80). Conclusions ZTE-MRA has potential for use as a routine clinical method for patients with ICAD.
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Affiliation(s)
- Chao Zhang
- Department of Radiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Weiqiang Dou
- GE Healthcare, MR Research China, Beijing, China
| | - Ke Yu
- Department of Radiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Yun Ji
- Department of Radiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China.,Department of Radiology, Traditional Chinese Medical Hospital of Yixing, Yixing, China
| | - Wenliang Wang
- Department of Interventional Radiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Muhammad Umair Sami
- Department of Radiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Yong Shen
- GE Healthcare, MR Enhanced Application China, Beijing, China
| | - Kai Xu
- Department of Radiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
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Abstract
BACKGROUND Intracranial atherosclerotic stenosis is a highly prevalent cause of stroke worldwide with important ethnic disparities. Widely considered to be a common cause of stroke in Asian and Afro-Caribbean populations, relatively less is known about the burden and significance of intracranial atherosclerotic stenosis in Caucasians. AIMS We aim to highlight recent insights and advances into the prevalence, prognosis, and treatment of symptomatic and asymptomatic atherosclerotic intracranial atherosclerotic stenosis in Caucasian patients. SUMMARY OF REVIEW We identified 48 articles studying intracranial atherosclerotic stenosis in Caucasian patients with ischemic stroke or transient ischemic attack. Most studies were on hospital-based cohorts of consecutive patients and half were graded as "fair" quality. There was significant variation between studies in the definition of intracranial atherosclerotic stenosis and in the imaging modalities used to detect intracranial atherosclerotic stenosis. Overall, 12.1% of Caucasian patients were found to have any intracranial atherosclerotic stenosis, 6.4% symptomatic intracranial atherosclerotic stenosis and 11.1% asymptomatic intracranial atherosclerotic stenosis, with higher rates at older ages. In studies reporting prognosis, there were 61 and 10 same-territory ischemic strokes in 1000 person-years in patients with symptomatic and asymptomatic intracranial atherosclerotic stenosis, respectively. Percutaneous stenting and angioplasty have not proven superior to intensive medical management in patients with symptomatic intracranial atherosclerotic stenosis. CONCLUSIONS Intracranial atherosclerotic stenosis has previously been neglected as a cause of stroke in Caucasians but is highly prevalent at older ages and frequently discovered with the growing use of noninvasive angiography. Intensive medical therapy is the treatment of choice, but there is a need to develop novel treatments or therapeutic approaches to lower the risk of stroke in higher risk patients.
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Affiliation(s)
- Robert Hurford
- Wolfson Centre for the Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Peter M Rothwell
- Wolfson Centre for the Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
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Leng X, Hurford R, Feng X, Chan KL, Wolters FJ, Li L, Soo YO, Wong KSL, Mok VC, Leung TW, Rothwell PM. Intracranial arterial stenosis in Caucasian versus Chinese patients with TIA and minor stroke: two contemporaneous cohorts and a systematic review. J Neurol Neurosurg Psychiatry 2021; 92:jnnp-2020-325630. [PMID: 33785575 PMCID: PMC8142447 DOI: 10.1136/jnnp-2020-325630] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/21/2020] [Accepted: 01/04/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Intracranial arterial stenosis (ICAS) is an important cause of stroke worldwide. Separate reports in Caucasians and Asians with stroke/transient ischaemic attack (TIA) have suggested lower ICAS prevalence in Caucasians, but there has been no direct comparisons of the two ethnic groups with the same criteria to define ICAS. METHODS Acute minor stroke or TIA patients in two cohorts respectively recruiting patients in Oxford (2011-2018, predominantly Caucasians) and Hong Kong (2011-2015, predominantly Chinese) were compared. ICAS was defined as ≥50% stenosis/occlusion in any major intracranial artery in MR/CT angiography. Prevalence, distribution and risk factors of ICAS were compared between the two cohorts. We also systematically reviewed literature on ICAS prevalence in stroke/TIA patients in different populations. RESULTS Among 1287 patients from Oxford and 691 from Hong Kong (mean age 69 vs 66), ICAS prevalence was higher in Chinese than in Caucasians (43.0% vs 20.0%; OR 3.02; 95% CI 2.47 to 3.70; p<0.001), independent of age (age-adjusted OR 3.73; 95% CI 3.00 to 4.63; p<0.001) and vascular risk factors (multivariable-adjusted OR 3.21; 95% CI 2.56 to 4.02; p<0.001). This ethnic difference was greater (p interaction=0.005) at age <70 years (OR 5.33; 95% CI 3.79 to 7.50; p<0.001) than at ≥70 years (OR 2.81; 95% CI 2.11 to 3.74; p<0.001). ICAS prevalence increased with age and with vascular risk factors in both cohorts, with equivalent prevalence in Chinese aged <60 years and Caucasians aged ≥80, and in Chinese with no vascular risk factor and Caucasians with two vascular risk factors. ICAS locations also differed between Chinese and Caucasian patients. CONCLUSIONS Chinese are more susceptible to ICAS than Caucasians, with an earlier onset age and a higher prevalence, independent of vascular risk factors.
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Affiliation(s)
- Xinyi Leng
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Robert Hurford
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
| | - Xueyan Feng
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Ka Lung Chan
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Frank J Wolters
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
| | - Linxin Li
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
| | - Yannie Oy Soo
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Ka Sing Lawrence Wong
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Vincent Ct Mok
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Thomas W Leung
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Peter M Rothwell
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
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Abstract
Atherosclerosis of the internal carotid artery and intracranial vessels can compromise cerebral hemodynamics and cause stroke. Cerebral bypass has a half-century history in augmenting or replacing blood flow the brain. Several trials have investigated various applications of cerebral bypass in flow augmentation for atherosclerotic disease. This review discusses the clinical science of cerebrovascular atherosclerosis to provide the context in which cerebral bypass is currently applied. This includes prior clinical trials, ongoing clinical trials, and consensus guidelines, and is complemented by studies in the physiologic science of cerebrovascular flow. The scientific background is supplemented by the description of the technical art of bypass surgery based on a three-decade experience. Successful application of cerebral bypass to augment flow in atherosclerotic cerebrovascular disease requires correct diagnosis of compromised hemodynamic reserve refractory to medical optimization and an appropriate matching of bypass flow with cerebral demand.
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Liebeskind DS, Hinman JD, Kaneko N, Kitajima H, Honda T, De Havenon AH, Feldmann E, Nogueira RG, Prabhakaran S, Romano JG, Callas PW, Schneider DJ. Endothelial Shear Stress and Platelet FcγRIIa Expression in Intracranial Atherosclerotic Disease. Front Neurol 2021; 12:646309. [PMID: 33716947 PMCID: PMC7947292 DOI: 10.3389/fneur.2021.646309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Accepted: 02/05/2021] [Indexed: 11/13/2022] Open
Abstract
Intracranial atherosclerotic disease (ICAD) has been characterized by the degree of arterial stenosis and downstream hypoperfusion, yet microscopic derangements of endothelial shear stress at the luminal wall may be key determinants of plaque growth, vascular remodeling and thrombosis that culminate in recurrent stroke. Platelet interactions have similarly been a principal focus of treatment, however, the mechanistic basis of anti-platelet strategies is largely extrapolated rather than directly investigated in ICAD. Platelet FcγRIIa expression has been identified as a potent risk factor in cardiovascular disease, as elevated expression markedly increases the risk of recurrent events. Differential activation of the platelet FcγRIIa receptor may also explain the variable response of individual patients to anti-platelet medications. We review existing data on endothelial shear stress and potential interactions with the platelet FcγRIIa receptor that may alter the evolving impact of ICAD, based on local pathophysiology at the site of arterial stenosis. Current methods for quantification of endothelial shear stress and platelet activation are described, including tools that may be readily adapted to the clinical realm for further understanding of ICAD.
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Affiliation(s)
- David S Liebeskind
- Department of Neurology, Neurovascular Imaging Research Core and UCLA Stroke Center, University of California, Los Angeles, Los Angeles, CA, United States
| | - Jason D Hinman
- Department of Neurology, Neurovascular Imaging Research Core and UCLA Stroke Center, University of California, Los Angeles, Los Angeles, CA, United States
| | - Naoki Kaneko
- Department of Neurology, Neurovascular Imaging Research Core and UCLA Stroke Center, University of California, Los Angeles, Los Angeles, CA, United States
| | - Hiroaki Kitajima
- Department of Neurology, Neurovascular Imaging Research Core and UCLA Stroke Center, University of California, Los Angeles, Los Angeles, CA, United States
| | - Tristan Honda
- Department of Neurology, Neurovascular Imaging Research Core and UCLA Stroke Center, University of California, Los Angeles, Los Angeles, CA, United States
| | - Adam H De Havenon
- Department of Neurology, University of Utah, Salt Lake City, UT, United States
| | - Edward Feldmann
- Department of Neurology, The University of Massachusetts Medical School-Baystate, Springfield, MA, United States
| | - Raul G Nogueira
- Department of Neurology, Marcus Stroke & Neuroscience Center, Emory University School of Medicine, Atlanta, GA, United States
| | - Shyam Prabhakaran
- Department of Neurology, The University of Chicago, Chicago, IL, United States
| | - Jose G Romano
- Department of Neurology, University of Miami, Miami, FL, United States
| | - Peter W Callas
- Department of Biostatistics, University of Vermont, Burlington, VT, United States
| | - David J Schneider
- Department of Medicine, Cardiovascular Research Institute, University of Vermont, Burlington, VT, United States
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Carvalho LB, Chambers B, Borschmann K, Kaffenberger T, Churilov L, Thijs V, Bernhardt J. Occlusive Disease and Upright Activity in Acute Ischemic Stroke. J Stroke Cerebrovasc Dis 2021; 30:105604. [PMID: 33476962 DOI: 10.1016/j.jstrokecerebrovasdis.2021.105604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/26/2020] [Accepted: 01/03/2021] [Indexed: 10/22/2022] Open
Abstract
The impact of out-of-bed upright activity on outcomes in ischemic stroke patients with severe extra- and intracranial stenosis or occlusion is unknown. Using ultrasound findings from a cohort recruited to A Very Early Rehabilitation Trial (AVERT) which compared higher dose very early mobilisation (VEM) to usual care (UC), we aimed to explore the association between occlusive disease and 3-month outcomes and occlusive disease-by-mobilisation treatment interactions. Participants with ischemic stroke, with carotid and transcranial Doppler ultrasounds performed ≤1 week after admission, were included in this single centre substudy in Melbourne, Australia. Reports were retrospectively reviewed to determine the degree of stenosis or presence of occlusion in the relevant arterial territory. Stenosis ≥70% extracranial or ≥50% intracranial were classified as severe or occlusion. Overall, 19% (n = 36/191) had occlusive disease in the affected circulation. About 40% (n = 14/36) with occlusive disease and 51% (n = 79/155) without had a 3-month favourable outcome (mRS 0-2) (adjusted OR0.53, CI0.17-1.67). Fourteen percent (n = 5) with occlusive disease and 4% (n = 6) without died by 3 months (adjusted OR2.52, CI0.6-10.7). Fifty percent (n = 11/22) of UC (adjusted OR0.86, CI0.23-3.2) and 21% (n = 3/14) of VEM participants (adjusted OR0.16, CI0.01-2.7) with occlusive disease had a favourable outcome. Almost 30% (n = 4) VEM participants with occlusive disease died (adjusted OR3.99, CI0.69-22.9) compared to 5% (n = 1) UC participants with occlusive disease (adjusted OR0.45, CI0.02-8.6), however numbers were small. No stenosis-by-treatment interactions were found. High quality prospective studies are needed to help guide decision making about when patients with occlusive disease should commence upright activity in acute stroke.
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Affiliation(s)
- Lilian B Carvalho
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Australia; NHMRC Centre for Research Excellence in Stroke Rehabilitation and Brain Recovery, Australia.
| | - Brian Chambers
- Department of Neurology, Austin Health, Australia; Department of Medicine, University of Melbourne, Australia
| | - Karen Borschmann
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Australia; NHMRC Centre for Research Excellence in Stroke Rehabilitation and Brain Recovery, Australia; St Vincent's Hospital, Melbourne, Australia
| | - Tina Kaffenberger
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Australia
| | - Leonid Churilov
- Department of Medicine (Austin Health) and Melbourne Brain Centre at Royal Melbourne Hospital, Melbourne Medical School, University of Melbourne, Australia
| | - Vincent Thijs
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Australia; Department of Neurology, Austin Health, Australia
| | - Julie Bernhardt
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Australia; NHMRC Centre for Research Excellence in Stroke Rehabilitation and Brain Recovery, Australia
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Liu R, Li J, Hua Y, Yang J, Zhao Y, Tian X, Ma Y, Zhao W. Transcranial Color-Coded Sonography Criteria for Moderate and Severe Middle Cerebral Artery Stenosis. Ultrasound Med Biol 2021; 47:25-32. [PMID: 33069442 DOI: 10.1016/j.ultrasmedbio.2020.09.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 08/29/2020] [Accepted: 09/07/2020] [Indexed: 06/11/2023]
Abstract
This study aimed to establish optimal criteria for evaluation of moderate (50%-69%) and severe (70%-99%) middle cerebral artery (MCA) stenosis with transcranial color-coded sonography (TCCS). A total of 375 cases provided 409 TCCS/digital subtraction angiography vessel pairs. Peak systolic velocity (PSV), end-diastolic velocity (EDV) and mean flow velocity (MFV) of the MCA were measured. The stenotic/distal MFV ratios (SDRs) were calculated. With digital subtraction angiography as a reference, for 50%-69% MCA stenosis, the optimal combined criteria were PSV ≥180 cm/s (sensitivity 95.7%, specificity 64.9% and overall accuracy 69.7%); EDV ≥75 cm/s (90.0%, 66.4% and 68.7%); MFV ≥110 cm/s (95.7%, 64.0% and 69.4%); and SDR ≥2.5 (88.6%, 71.3% and 76.3%). Criteria for 70%-99% MCA stenosis were PSV ≥240 cm/s (93.5%, 89.9% and 85.5%); EDV ≥100 cm/s (96.8%, 89.0% and 87.3%); MFV≥160 cm/s (91.9%, 92.8% and 92.2%); and SDR ≥4 (87.1%, 92.2% and 91.4%). Parameters of the MCA detected by TCCS, especially SDR, may increase accuracy in diagnosis of 50%-69% and 70%-99% MCA stenosis.
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Affiliation(s)
- Ran Liu
- Department of Vascular Ultrasound, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jingzhi Li
- Department of Vascular Ultrasound, Xuanwu Hospital, Capital Medical University, Beijing, China; Center of Vascular Ultrasonography, Beijing Institute of Brain Disorders, Beijing, China
| | - Yang Hua
- Department of Vascular Ultrasound, Xuanwu Hospital, Capital Medical University, Beijing, China; Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
| | - Jie Yang
- Department of Vascular Ultrasound, Xuanwu Hospital, Capital Medical University, Beijing, China; Center of Vascular Ultrasonography, Beijing Institute of Brain Disorders, Beijing, China
| | - Yue Zhao
- Department of Vascular Ultrasound, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xiaojie Tian
- Department of Vascular Ultrasound, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yan Ma
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Wenbo Zhao
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
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Callen A, Narvid J, Chen X, Gregath T, Meisel K. Neurovascular disease, diagnosis, and therapy: Cervical and intracranial atherosclerosis, vasculitis, and vasculopathy. Handb Clin Neurol 2021; 176:249-266. [PMID: 33272399 DOI: 10.1016/b978-0-444-64034-5.00023-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Stroke is a leading cause of death, disability, and financial burden in the United States. Perhaps more than any other disease process, the rapidity with which the diagnosis and treatment of stroke are successfully achieved is paramount to the reduction of its associated morbidity and mortality. Steno-occlusive intracranial vascular disease, the most notorious culprit of cerebral ischemia and/or hemorrhage, traces its etiology to native and embolic atherosclerosis as well as various forms of vascular inflammation, insult, and dysfunction. Distinguishing between these causes is a critical first step in the diagnosis and treatment of a patient presenting with cerebrovascular compromise. In this chapter, we delineate the clinical and imaging features of cervical and intracranial atherosclerosis, vasculitis, and vasculopathy, along with the evidence behind the treatments which comprise their current-day standard of care. The modern imaging armamentarium is diverse and complex, with contrast-enhanced and non-contrast MR angiography, CT angiography, digital subtraction angiography, and ultrasound; each playing an important role in providing rapid insight into the patient's disease process. Understanding these imaging techniques and their application in the acute setting is critical for the provider caring for stroke patients.
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Affiliation(s)
- Andrew Callen
- Department of Radiology, University of Colorado, Boulder, CO, United States
| | - Jared Narvid
- Department of Radiology, University of California San Francisco, San Francisco, CA, United States
| | - Xiaolin Chen
- Department of Neurosurgery, Peking University International Hospital, Beijing, China
| | - Trevor Gregath
- Department of Neurology, Bryan Health, Lincoln, NE, United States
| | - Karl Meisel
- Department of Neurology, University of California San Francisco, San Francisco, CA, United States.
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Alloza I, Salegi A, Mena J, Navarro RT, Martin C, Aspichueta P, Salazar LM, Carpio JU, Cagigal PDLH, Vega R, Triviño JC, Freijo MDM, Vandenbroeck K. BIRC6 Is Associated with Vulnerability of Carotid Atherosclerotic Plaque. Int J Mol Sci 2020; 21:ijms21249387. [PMID: 33317170 PMCID: PMC7763522 DOI: 10.3390/ijms21249387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 12/04/2020] [Accepted: 12/08/2020] [Indexed: 11/16/2022] Open
Abstract
Carotid atherosclerotic plaque rupture can lead to cerebrovascular accident (CVA). By comparing RNA-Seq data from vascular smooth muscle cells (VSMC) extracted from carotid atheroma surgically excised from a group of asymptomatic and symptomatic subjects, we identified more than 700 genomic variants associated with symptomatology (p < 0.05). From these, twelve single nucleotide polymorphisms (SNPs) were selected for further validation. Comparing genotypes of a hospital-based cohort of asymptomatic with symptomatic patients, an exonic SNP in the BIRC6 (BRUCE/Apollon) gene, rs35286811, emerged as significantly associated with CVA symptomatology (p = 0.002; OR = 2.24). Moreover, BIRC6 mRNA levels were significantly higher in symptomatic than asymptomatic subjects upon measurement by qPCR in excised carotid atherosclerotic tissue (p < 0.0001), and significantly higher in carriers of the rs35286811 risk allele (p < 0.0001). rs35286811 is a proxy of a GWAS SNP reported to be associated with red cell distribution width (RDW); RDW was increased in symptomatic patients (p < 0.03), but was not influenced by the rs35286811 genotype in our cohort. BIRC6 is a negative regulator of both apoptosis and autophagy. This work introduces BIRC6 as a novel genetic risk factor for stroke, and identifies autophagy as a genetically regulated mechanism of carotid plaque vulnerability.
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Affiliation(s)
- Iraide Alloza
- Inflammation & Biomarkers Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (I.A.); (A.S.); (J.M.); (R.T.N.)
- Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
| | - Andrea Salegi
- Inflammation & Biomarkers Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (I.A.); (A.S.); (J.M.); (R.T.N.)
- Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
| | - Jorge Mena
- Inflammation & Biomarkers Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (I.A.); (A.S.); (J.M.); (R.T.N.)
- Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
| | - Raquel Tulloch Navarro
- Inflammation & Biomarkers Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (I.A.); (A.S.); (J.M.); (R.T.N.)
- Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
| | - César Martin
- Biofisika Institute (UPV/EHU, CSIC), 48940 Leioa, Spain;
| | - Patricia Aspichueta
- Department of Physiology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain;
- Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
| | - Lucía Martínez Salazar
- Department of Laboratory Medicine, Osakidetza, Bilbao-Basurto IHO, Basurto University Hospital, 48013 Bilbao, Spain; (L.M.S.); (J.U.C.); (P.D.-l.-H.C.)
| | - Jon Uriarte Carpio
- Department of Laboratory Medicine, Osakidetza, Bilbao-Basurto IHO, Basurto University Hospital, 48013 Bilbao, Spain; (L.M.S.); (J.U.C.); (P.D.-l.-H.C.)
| | - Patricia De-la-Hera Cagigal
- Department of Laboratory Medicine, Osakidetza, Bilbao-Basurto IHO, Basurto University Hospital, 48013 Bilbao, Spain; (L.M.S.); (J.U.C.); (P.D.-l.-H.C.)
| | - Reyes Vega
- Neurovascular Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (R.V.); (M.d.M.F.)
| | | | - Maria del Mar Freijo
- Neurovascular Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (R.V.); (M.d.M.F.)
| | - Koen Vandenbroeck
- Inflammation & Biomarkers Group, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain; (I.A.); (A.S.); (J.M.); (R.T.N.)
- Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
- Correspondence:
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Li HQ, Wang X, Wang HF, Zhang W, Song JH, Chi S, Sun YP, Zhong XL, Ma T, Dai GZ, Tan L, Dong Q, Yu JT. Dose-response relationship between blood pressure and intracranial atherosclerotic stenosis. Atherosclerosis 2021; 317:36-40. [PMID: 33333347 DOI: 10.1016/j.atherosclerosis.2020.12.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 11/10/2020] [Accepted: 12/02/2020] [Indexed: 01/17/2023]
Abstract
BACKGROUND AND AIMS We aimed to explore the association between blood pressure, intracranial atherosclerotic stenosis (ICAS) risks and ICAS burden in the Chinese population. METHODS A retrospective hospital-based multi-center case-control study with large sample size was conducted. 1055 ICAS patients and 1296 non-ICAS subjects with complete clinical information and intracranial artery evaluation were identified between 2014 and 2019. Cerebral arteries were evaluated by magnetic resonance angiography, and/or computed tomography, and/or digital subtraction angiography. Two or more neurologists were involved in reading and assessment of images. The association between ICAS and burden of ICAS with blood pressure was evaluated with univariate logistic models and multivariate logistic models. RESULTS With every increase of 10 mmHg in systolic blood pressure, diastolic blood pressure and pulse pressure, the odds of ICAS increased by 32%, 28% and 35% in multivariate analysis, respectively (odds ratio = 1.32, 1.28, and 1.35 respectively, all p < 0.001). Similarly, every increment of 10 mmHg in systolic blood pressure and pulse pressure was associated with an increased risk of ICAS burden (each odds ratio = 1.08, p < 0.05). CONCLUSIONS Systolic blood pressure, diastolic blood pressure, and pulse pressure were associated with the risk of ICAS in a dose-response manner. Moreover, higher systolic blood pressure and pulse pressure could lead to higher ICAS burdens.
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Wang Q, Zhao Y, Wang X, Ji X, Sang S, Shao S, Ma X, Wang G, Lv M, Xue F, Du Y, Sun Q. Association between asymptomatic intracranial arterial stenosis and insulin resistance or diabetes mellitus: a cross-sectional study in rural Shandong, China. BMJ Open Diabetes Res Care 2020; 8:8/2/e001788. [PMID: 33277341 PMCID: PMC7722366 DOI: 10.1136/bmjdrc-2020-001788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/13/2020] [Accepted: 11/15/2020] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Recent studies have shown that insulin resistance (IR) is correlated to atherosclerosis development. However, few studies have investigated the association between IR and asymptomatic intracranial arterial stenosis (aICAS). RESEARCH DESIGN AND METHODS This cross-sectional study enrolled 2007 rural residents in China who were aged ≥40 years without a clinical history of stroke and transient ischaemic attack. We used transcranial Doppler ultrasonography in combination with magnetic resonance angiography to diagnose aICAS (stenosis ≥50%). IR was defined as a homeostasis model assessment of insulin resistance ≥3.0 based on the 75th percentile for all the participants. Multivariate logistic regression models were employed to assess the relationship of diabetic parameters with aICAS in all participants, as well as with aICAS in non-diabetic participants, and further stratified by sex. RESULTS After adjusting for age, gender, smoking habit, drinking habit, low-density lipoprotein cholesterol, raised blood pressure, triglycerides, high-density lipoprotein cholesterol and waist circumference, diabetes mellitus (DM) (OR=2.09, 95% CI 1.31 to 3.32), fasting plasma glucose (FPG) (OR=1.34, 95% CI 1.14 to 1.57), and IR (OR=1.75, 95% CI 1.11 to 2.75) were associated with aICAS in the total study population; however, these relationships remained significant only in men after the analyses were stratified by sex (DM: OR=3.40, 95% CI 1.62 to 7.13; FPG: OR=1.64, 95% CI 1.26 to 2.13; IR: OR=3.04, 95% CI 1.44 to 6.42). When further excluding the diabetic participants from the total study population, positive associations between IR and aICAS were similarly observed only in men (OR=4.65, 95% CI 1.69 to 12.82). CONCLUSIONS IR might predict the prevalence of aICAS independently of major cardiovascular risk factors and metabolic syndrome components among men living in rural China.
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Affiliation(s)
- Qiao Wang
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Yuanyuan Zhao
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xiang Wang
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xiaokang Ji
- Department of Biostatistics, School of Public Health, Shandong University, Jinan, Shandong, China
| | - Shaowei Sang
- Department of Clinical Epidemiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Sai Shao
- Department of Radiology, Shandong Medical Imaging Research Institute, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Xiaotong Ma
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Guangbin Wang
- Department of Radiology, Shandong Medical Imaging Research Institute, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Ming Lv
- Department of Clinical Epidemiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Fuzhong Xue
- Department of Biostatistics, School of Public Health, Shandong University, Jinan, Shandong, China
| | - Yifeng Du
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Qinjian Sun
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
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Mowla A, Shakibajahromi B, Kabir R, Garami Z, Volpi JJ. Transcranial Doppler and magnetic resonance angiography assessment of intracranial stenosis: An analysis of screening modalities. Brain Circ 2020; 6:181-184. [PMID: 33210042 PMCID: PMC7646396 DOI: 10.4103/bc.bc_21_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/15/2020] [Accepted: 08/05/2020] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND: Time-of-flight (TOF) magnetic resonance angiography (MRA) of the head and transcranial Doppler (TCD) are used to diagnose intracranial stenosis, an important cause of ischemic stroke. We aimed to compare TCD findings with TOF-MRA results in a population of patients with symptoms of cerebrovascular disease in whom both tests were done within a short intervening period of each other. METHODS: This is a retrospective, single-center study. Among adult patients referred for symptoms of cerebrovascular disease in both outpatient and inpatient settings, those who received a TCD with adequate insonation of all intracranial arteries and underwent MRA within 3 months intervals of TCD were included in this study. We evaluated the agreement between the results of these two modalities, and also assessed sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of TCD through receiver-operating characteristic (ROC) curve analysis, while MRA considered as a comparator. RESULTS: Among eighty included patients, 720 arteries were examined. An overall significant agreement of 96.5% was observed between TCD and MRA (Kappa = 0.377, P < 0.001). Compared to MRA, TCD had sensitivity of 42.1%, specificity of 99.6%, PPV of 72.7%, and NPV of 98.4% (ROC area: 0.708 [0.594–0.822]). TCD is specifically accurate in evaluating middle cerebral artery (MCA) (ROC area = 0.83). CONCLUSIONS: The high NPV of TCD in our study indicates the utility of TCD as a diagnostic test to exclude the presence of intracranial stenosis. This study supports TCD as a convenient, safe, and reproducible imaging modality applicable in the screening of intracranial stenosis, especially to evaluate MCA.
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Affiliation(s)
- Ashkan Mowla
- Department of Neurological Surgery, Division of Endovascular Neurosurgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | | | - Rasadul Kabir
- Department of Neurology, Houston Methodist Neurological Institute, Houston, TX, USA
| | - Zsolt Garami
- Institute for Academic Medicine, Research Institute, Weill Cornell Medical College, Houston, TX, USA.,Vascular Ultrasound Laboratory, Houston Methodist Hospital, Weill Cornell Medical College, Houston, TX, USA
| | - John J Volpi
- Department of Neurology, Houston Methodist Neurological Institute, Houston, TX, USA
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Sarikaya B, Colip C, Hwang WD, Hippe DS, Zhu C, Sun J, Balu N, Yuan C, Mossa-Basha M. Comparison of time-of-flight MR angiography and intracranial vessel wall MRI for luminal measurements relative to CT angiography. Br J Radiol 2020; 94:20200743. [PMID: 33180559 DOI: 10.1259/bjr.20200743] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE To assess whether intracranial vessel wall (IVW) MRI luminal measurements are more accurate than non-contrast 3D-TOF-MRA measurements for intracranial atherosclerotic stenosis, relative to CTA. METHODS Consecutive patients with non-calcified intracranial atherosclerotic stenosis seen on CTA, who had non-contrast 3D-TOF-MRA and IVW performed between 1 January 2013 and 20 April 2014 were selected, and images with stenosis were pre-selected by a single independent rater. The pre-selected CTA, MRA, and IVW (T1-weighted) images were then reviewed by two independent raters blinded to the other measurements in random order. Measurements were made in a plane perpendicular to the lumen on each modality. MRA and IVW measurements were compared to CTA, to determine which more accurately matched the degree of stenosis. RESULTS 18 patients with 33 intracranial atherosclerotic stenoses were included. Relative to CTA, IVW had 40% less variance than MRA (p = .004). IVW had a significantly higher concordance correlation coefficient (CCC) relative to CTA than MRA (.87 vs .68, p = .002). IVW and MRA did not have significant bias relative to CTA, however, 8/33 lesions showed >20% overestimation of the degree of stenosis on MRA, compared to 1/33 for IVW. CCC between raters were 0.84 (95% CI 0.67-0.93) for CTA, 0.83 (0.67-0.93) for TOF-MRA, and 0.85 (0.71-0.94) for IVW. For stenosis >50% sensitivity was 82% for IVW and 64% for MRA, while specificity was 73% for both. CONCLUSION IVW provides more accurate stenosis measurements than MRA when compared to CTA. ADVANCES IN KNOWLEDGE Considering higher stenosis measurement accuracy of IVW, it can be more reliably used for quantitative evaluation relative to MRA.
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Affiliation(s)
- Basar Sarikaya
- Department of Radiology, University of Washington School of Medicine, Washington, SA, USA
| | - Charles Colip
- Department of Radiology, University of Washington School of Medicine, Washington, SA, USA
| | - William D Hwang
- Department of Radiology, University of Washington School of Medicine, Washington, SA, USA
| | - Daniel S Hippe
- Department of Radiology, University of Washington School of Medicine, Washington, SA, USA
| | - Chengcheng Zhu
- Department of Radiology, University of Washington School of Medicine, Washington, SA, USA
| | - Jie Sun
- Department of Radiology, University of Washington School of Medicine, Washington, SA, USA
| | - Niranjan Balu
- Department of Radiology, University of Washington School of Medicine, Washington, SA, USA
| | - Chun Yuan
- Department of Radiology, University of Washington School of Medicine, Washington, SA, USA
| | - Mahmud Mossa-Basha
- Department of Radiology, University of Washington School of Medicine, Washington, SA, USA
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Fujiyoshi A, Suri MFK, Alonso A, Selvin E, Chu H, Guallar E, Qiao Y, Zhang Y, Wasserman BA, Folsom AR. Hyperglycemia, duration of diabetes, and intracranial atherosclerotic stenosis by magnetic resonance angiography: The ARIC-NCS study. J Diabetes Complications 2020; 34:107605. [PMID: 32600893 PMCID: PMC8285273 DOI: 10.1016/j.jdiacomp.2020.107605] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/16/2020] [Accepted: 04/18/2020] [Indexed: 01/31/2023]
Abstract
AIMS The association of hyperglycemia and duration of diabetes with intracranial atherosclerotic stenosis (ICAS) in the general population is not well documented. We examined whether elevated glucose and longer diabetes duration is independently associated with ICAS in a community-based sample. METHODS We cross-sectionally analyzed 1644 participants (age 67-90 years) of the Atherosclerosis Risk in Communities Study who underwent cerebrovascular magnetic resonance angiography in 2011-13. We applied multivariable ordinal logistic regression to evaluate the association of ICAS category ("no stenosis", "stenosis <50%", or "stenosis ≥50%") with glucose or diabetes duration (<10, 10 to 20, and ≥20 years). We also obtained the corresponding odds ratios applying inverse-probability weighting to account for potential selection bias due to attrition. RESULTS Compared to non-diabetic participants in the lowest glucose quartile, the weighted odds ratios (95% confidence interval) of higher ICAS category were 1.88 (1.18, 3.00) and 2.01 (1.08, 3.72) for non-diabetic and diabetic participants in the corresponding highest glucose quartile, respectively. We observed significant positive trends of ICAS across diabetes duration categories in unweighted, but not in weighted, analyses. CONCLUSIONS Hyperglycemia and longer duration of diabetes were independently associated with ICAS, suggesting the importance of maintaining glycemic control to prevent stroke.
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Affiliation(s)
- Akira Fujiyoshi
- Department of Hygiene, Wakayama Medical University, Wakayama, Japan.
| | - M Fareed K Suri
- Department of Neurology, University of Minnesota, MN, United States of America
| | - Alvaro Alonso
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, United States of America
| | - Elizabeth Selvin
- Departments of Epidemiology and the Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Haitao Chu
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, MN, United States of America
| | - Eliseo Guallar
- Departments of Epidemiology and the Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Ye Qiao
- The Russell H. Morgan Department of Radiology and Radiological Sciences, The Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - Yiyi Zhang
- Departments of Epidemiology and the Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Bruce A Wasserman
- The Russell H. Morgan Department of Radiology and Radiological Sciences, The Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - Aaron R Folsom
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, United States of America
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Wang T, Luo J, Wang X, Yang K, Jadhav V, Gao P, Ma Y, Zhao N, Jiao L. Endovascular therapy versus medical treatment for symptomatic intracranial artery stenosis. Cochrane Database Syst Rev 2020; 8:CD013267. [PMID: 32789891 PMCID: PMC7437396 DOI: 10.1002/14651858.cd013267.pub2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Intracranial atherosclerotic stenosis (ICAS) is an arterial narrowing in the brain that can cause stroke. Endovascular therapy and medical management may be used to prevent recurrent ischaemic stroke caused by ICAS. However, there is no consensus on the best treatment for people with ICAS. OBJECTIVES To compare the safety and efficacy of endovascular therapy (ET) plus conventional medical treatment (CMT) with CMT alone for the management of symptomatic ICAS. SEARCH METHODS We searched the Cochrane Stroke Group Trials Register (30 August 2019), Cochrane Central Register of Controlled Trials (CENTRAL: to 30 August 2019), MEDLINE Ovid (1946 to 30 August 2019), Embase Ovid (1974 to 30 August 2019), Scopus (1960 to 30 August 2019), Science Citation Index Web of Science (1900 to 30 July 2019), Academic Source Complete EBSCO (ASC: 1982 to 30 July 2019), and China Biological Medicine Database (CBM: 1978 to 30 July 2019). We also searched the following trial registers: ClinicalTrials.gov, WHO International Clinical Trials Registry Platform, and Stroke Trials Registry. We also contacted trialists and researchers where additional information was required. SELECTION CRITERIA Randomised controlled trials (RCTs) comparing ET plus CMT with CMT alone for the treatment of symptomatic ICAS. ET modalities included angioplasty alone, balloon-mounted stent, and angioplasty followed by placement of a self-expanding stent. CMT included antiplatelet therapy in addition to control of risk factors such as hypertension, hyperlipidaemia, and diabetes. DATA COLLECTION AND ANALYSIS Two review authors independently screened trials to select potentially eligible RCTs and extracted data. Any disagreements were resolved by discussing and reaching consensus decisions with the full team. We assessed risk of bias and applied the GRADE approach to assess the quality of the evidence. The primary outcome was death of any cause or non-fatal stroke of any type within three months of randomisation. Secondary outcomes included any-cause death or non-fatal stroke of any type more than three months of randomisation, ipsilateral stroke, type of recurrent event, death, restenosis, dependency, and health-related quality of life. MAIN RESULTS We included three RCTs with 632 participants who had symptomatic ICAS with an age range of 18 to 85 years. The included trials had high risks of performance bias and other potential sources of bias due to the impossibility of blinding of the endovascular intervention and early termination of the trials. Moreover, one trial had a high risk of attrition bias because of the high rate of loss of one-year follow-up and the high proportion of participants transferred from endovascular therapy to medical management. The quality of evidence ranged from low to moderate, downgraded for imprecision. Compared to CMT, ET probably results in a higher rate of 30-day death or stroke (risk ratio (RR) 3.07, 95% confidence interval (CI) 1.80 to 5.24; 3 RCTs, 632 participants, moderate-quality evidence), 30-day ipsilateral stroke (RR 3.54, 95% CI 1.98 to 6.33; 3 RCTs, 632 participants, moderate-quality evidence), 30-day ischaemic stroke (RR 2.52, 95% CI 1.37 to 4.62; 3 RCTs, 632 participants, moderate-quality evidence), and 30-day haemorrhagic stroke (RR 15.53, 95% CI 2.10 to 115.16; 3 RCTs, 632 participants, low-quality evidence). ET was also likely associated with a worse outcome in one-year death or stroke (RR 1.69, 95% CI 1.21 to 2.36; 3 RCTs, 632 participants, moderate-quality evidence), one-year ipsilateral stroke (RR 2.28, 95% CI 1.52 to 3.42; 3 RCTs, 632 participants, moderate-quality evidence), one-year ischaemic stroke (RR 2.07, 95% CI 1.37 to 3.13; 3 RCTs, 632 participants, moderate-quality evidence), and one-year haemorrhagic stroke (RR 10.13, 95% CI 1.31 to 78.51; 2 RCTs, 521 participants, low-quality evidence). There were no significant differences between ET and CMT in 30-day transient ischaemic attacks (TIA) (RR 0.52, 95% CI 0.11 to 2.35, P = 0.39; 2 RCTs, 181 participants, moderate-quality evidence), 30-day death (RR 5.53, 95% CI 0.98 to 31.17, P = 0.05; 3 RCTs, 632 participants, low-quality evidence), one-year TIA (RR 0.82, 95% CI 0.32 to 2.12; 2 RCTs, 181 participants, moderate-quality evidence), one-year death (RR 1.20, 95% CI 0.50 to 2.86, P = 0.68; 3 RCTs, 632 participants, moderate-quality evidence), and one-year dependency (RR 1.90, 95% CI 0.91 to 3.97, P = 0.09; 3 RCTs, 613 participants, moderate-quality evidence). No data on restenosis and health-related quality of life for meta-analysis were available from the included trials. Two RCTs are ongoing. AUTHORS' CONCLUSIONS This systematic review provides moderate-quality evidence showing that ET, compared with CMT, in people with recent symptomatic severe intracranial atherosclerotic stenosis probably does not prevent recurrent stroke and appears to carry an increased hazard. The impact of delayed ET intervention (more than three weeks after a qualifying event) is unclear and may warrant further study.
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Affiliation(s)
- Tao Wang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jichang Luo
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xue Wang
- Medical Library of Xuanwu Hospital, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Kun Yang
- Department of Evidence-based Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Vikram Jadhav
- Neurosciences, Essentia Health, St Mary's Medical Center, Duluth, Minnesota, USA
- Neurosciences, Stroke and Cerebrovascular, CentraCare Health System, St Cloud, Minnesota, USA
| | - Peng Gao
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yan Ma
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Na Zhao
- Department of Anesthesiology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Liqun Jiao
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
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Hurford R, Wolters FJ, Li L, Lau KK, Küker W, Rothwell PM. Prognosis of Asymptomatic Intracranial Stenosis in Patients With Transient Ischemic Attack and Minor Stroke. JAMA Neurol 2020; 77:947-954. [PMID: 32453401 PMCID: PMC7251503 DOI: 10.1001/jamaneurol.2020.1326] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 03/06/2020] [Indexed: 12/31/2022]
Abstract
Importance Asymptomatic intracranial stenosis (ICS) is a frequent finding on imaging results, particularly in the assessment of acute stroke. Although the management of symptomatic ICS is informed by randomized trials, to our knowledge there are few data on the prevalence and prognosis of asymptomatic ICS in patients with stroke and transient ischemic attack (TIA). Objective To study the age-specific prevalence and prognosis of asymptomatic ICS in a population-based cohort of patients with TIA and minor stroke. Design, Setting, and Participants All patients (predominantly white) recruited to the Oxford Vascular Study (Oxfordshire, England) between March 1, 2011, and March 1, 2018, with TIA and minor ischemic stroke (National Institutes of Health Stroke Scale score, ≤3), irrespective of age, were included (n = 1579). We determined the age-specific prevalence of 50% or more asymptomatic ICS and the associated stroke risk by face-to-face follow-up to 2018 on standard medical treatment without stenting. Exposures Patients underwent magnetic resonance angiography of the intracranial and cervicocranial arteries, computed tomography angiography if magnetic resonance angiography was contraindicated, or carotid/transcranial Doppler ultrasonography if computed tomography angiography was contraindicated. Main Outcomes and Measures The primary outcomes were the prevalence and prognosis of asymptomatic ICS. Results Of 1368 eligible patients (mean [SD] age, 69.2 [13.9] years; 700 men [51.2%]) with intracranial vascular imaging, 426 ICS were identified in 260 patients (19.0%): 58 (4.2%) with only symptomatic ICS, 155 (11.3%) with only asymptomatic ICS, and 47 (3.4%) with both. The prevalence of any asymptomatic ICS increased from 4.8% for patients younger than 70 years to 34.6% for patients 90 years or older (P for trend < .001; odds ratio per decade, 1.96; 95% CI, 1.69-2.27) and was greater than that of 50% or more asymptomatic carotid bifurcation stenosis (202 [14.8%] vs 105 patients [7.2%]; relative risk, 2.04; 95% CI, 1.63-2.55, P < .001). However, the 155 patients with only asymptomatic ICS had no increase in risk of ischemic stroke compared with those with no ICS (unadjusted HR, 1.03, 95% CI, 0.49-2.17), with 8 first recurrent events (5.2%) during 506 patient-years of follow-up and 3 in the territory of the ICS (annualized risk, 0.59%; 95% CI, 0.12-1.73). Conclusions and Relevance The prevalence of asymptomatic ICS increases with age in white patients with TIA and minor stroke and is greater than that of asymptomatic carotid stenosis, but asymptomatic ICS does not increase the short- or medium-term risk of distal recurrent ischemic stroke for patients receiving standard medical treatment.
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Affiliation(s)
- Robert Hurford
- Wolfson Centre for the Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, England
| | - Frank J. Wolters
- Wolfson Centre for the Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, England
| | - Linxin Li
- Wolfson Centre for the Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, England
| | - Kui Kai Lau
- Wolfson Centre for the Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, England
| | - Wilhelm Küker
- Wolfson Centre for the Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, England
| | - Peter M. Rothwell
- Wolfson Centre for the Prevention of Stroke and Dementia, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, England
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