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Southey CC, Birns J, Sommerville P, Bhalla A. Transient unilateral weakness: is it a transient ischaemic attack? Br J Hosp Med (Lond) 2022; 83:1-7. [DOI: 10.12968/hmed.2022.0414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Transient ischaemic attack is an emergency medical condition that causes brief negative focal neurological symptoms such as unilateral weakness. The symptoms herald a high risk of stroke and hence require urgent assessment. The challenge lies in the brevity and compendium of associated symptoms that can ‘mimic’ a plethora of other conditions. The result is a high rate of referrals to transient ischaemic attack clinics for these stroke mimics. This article highlights the diagnostic challenges in transient ischaemic attack with relevance to unilateral weakness.
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Affiliation(s)
- Charles C Southey
- Department of Ageing and Health, Guy's and St Thomas’ NHS Foundation Trust, London, UK
| | - Jonathan Birns
- Department of Ageing and Health, Guy's and St Thomas’ NHS Foundation Trust, London, UK
| | - Peter Sommerville
- Department of Ageing and Health, Guy's and St Thomas’ NHS Foundation Trust, London, UK
| | - Ajay Bhalla
- Department of Ageing and Health, Guy's and St Thomas’ NHS Foundation Trust, London, UK
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Nicolas K, Goodin P, Visser MM, Michie PT, Bivard A, Levi C, Parsons MW, Karayanidis F. Altered Functional Connectivity and Cognition Persists 4 Years After a Transient Ischemic Attack or Minor Stroke. Front Neurol 2021; 12:612177. [PMID: 34163417 PMCID: PMC8215289 DOI: 10.3389/fneur.2021.612177] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 04/30/2021] [Indexed: 11/25/2022] Open
Abstract
Background and Purpose: Altered executive functions and resting-state functional connectivity (rsFC) are common following a minor stroke or transient ischemic attack (TIA). However, the long-term persistence of these abnormalities is not well-studied. We investigated whether there were cognitive and rsFC differences between (a) controls and minor cerebrovascular event (CVE) patients and (b) between CVE patients with and without an imaging confirmed infarct (i.e., minor stroke and TIA, respectively) at an average of 3.8 years following their event. Methods: Structural and resting-state imaging and cognitive assessments including the Montreal Cognitive Assessment, the Trail Making Task and the National Institute of Health (NIH) Cognition Toolbox were conducted on 42 patients (minor stroke = 17, TIA = 25) and 20 healthy controls (total N = 62). Results: Controls performed better than patients on two measures of executive functioning (both p < 0.046) and had reduced rsFC between the frontoparietal and default mode networks (FPN and DMN, respectively; p = 0.035). No cognitive differences were found between minor stroke and TIA patients, however, rsFC differences were found within the FPN and the DMN (both p < 0.013). Specifically, increased connectivity within the FPN was associated with faster performance in the minor stroke group but not the TIA group (p = 0.047). Conclusions: These findings suggest that transient or relatively minor cerebrovascular events are associated with persistent disruption of functional connectivity of neural networks and cognitive performance. These findings suggest a need for novel interventions beyond secondary prevention to reduce the risk of persistent cognitive deficits.
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Affiliation(s)
- Korinne Nicolas
- Functional Neuroimaging Laboratory, School of Psychology, University of Newcastle, Callaghan, NSW, Australia.,Hunter Medical Research Institute, Newcastle, NSW, Australia.,Priority Research Centre for Stroke and Brain Injury, The University of Newcastle, Callaghan, NSW, Australia
| | - Peter Goodin
- Melbourne Brain Centre, Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia
| | - Milanka M Visser
- Priority Research Centre for Stroke and Brain Injury, The University of Newcastle, Callaghan, NSW, Australia.,Melbourne Brain Centre, Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia
| | - Patricia T Michie
- Functional Neuroimaging Laboratory, School of Psychology, University of Newcastle, Callaghan, NSW, Australia.,Hunter Medical Research Institute, Newcastle, NSW, Australia
| | - Andrew Bivard
- Priority Research Centre for Stroke and Brain Injury, The University of Newcastle, Callaghan, NSW, Australia.,Melbourne Brain Centre, Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia
| | - Christopher Levi
- Hunter Medical Research Institute, Newcastle, NSW, Australia.,Priority Research Centre for Stroke and Brain Injury, The University of Newcastle, Callaghan, NSW, Australia.,Sydney Partnership for Health, Education, Research and Enterprise, Sydney, NSW, Australia
| | - Mark W Parsons
- Hunter Medical Research Institute, Newcastle, NSW, Australia.,Priority Research Centre for Stroke and Brain Injury, The University of Newcastle, Callaghan, NSW, Australia.,Melbourne Brain Centre, Royal Melbourne Hospital, University of Melbourne, Parkville, VIC, Australia
| | - Frini Karayanidis
- Functional Neuroimaging Laboratory, School of Psychology, University of Newcastle, Callaghan, NSW, Australia.,Hunter Medical Research Institute, Newcastle, NSW, Australia.,Priority Research Centre for Stroke and Brain Injury, The University of Newcastle, Callaghan, NSW, Australia
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Wang W, Sun P, Han F, Qu C. Sex Differences in Risk Factors for Transient Ischemic Attack in a Chinese Population. Front Neurol 2021; 12:615399. [PMID: 34025549 PMCID: PMC8134545 DOI: 10.3389/fneur.2021.615399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 04/09/2021] [Indexed: 11/13/2022] Open
Abstract
Introduction: This study aimed to collect and evaluate basic information of a stroke screening population in eastern China and to compare distribution differences in risk factors between males and females in a transient ischemic attack (TIA) population. Methods: A standardization of the risk factors for stroke was performed according to an implementation plan of stroke in a high-risk population screening and intervention project in Shandong Province. Of the 231,289 residents, 8,603 patients with a previous TIA were identified and risk factors in this cohort were analyzed for sex differences. Results: In our initial cohort of 231,289 residents, we found 3,390 men and 5,213 women with TIA, accounting for a prevalence of 3.1 and 4.2%, respectively. Risk factors for TIA were hypertension, atrial fibrillation, diabetes, smoking, lack of exercise, overweight, and family history of stroke. In our TIA cohort, we found that the prevalence of smoking was significantly higher in men (41.3%) compared with that found in women (4.2%). Further, hypertension (58.8 vs. 55.5%) and family history of stroke (22.3 vs. 20.0%) were more prevalent in men compared with women, whereas atrial fibrillation (AF) (14.7 vs. 16.4%), diabetes (11.1 vs. 13.2%), lack of exercise (27.2 vs. 28.0%), and overweight (29.5 vs. 35.7%) were less prevalent. Conclusions: In our TIA cohort from eastern China, we found significant sex differences for the risk factors of hypertension, atrial fibrillation, smoking, diabetes, and overweight.
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Affiliation(s)
- Wendi Wang
- Neurology Department, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Pei Sun
- Neurology Department, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Fengyue Han
- Neurology Department, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Chuanqiang Qu
- Neurology Department, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
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Hu H, Zhang X, Zhao J, Li Y, Zhao Y. Transient Ischemic Attack and Carotid Web. AJNR Am J Neuroradiol 2019; 40:313-318. [PMID: 30655258 DOI: 10.3174/ajnr.a5946] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 12/03/2018] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Carotid web was recognized as a cause of ischemic stroke. We sought to determine the clinical and imaging profiles of patients with a carotid web as well as its association with TIA. MATERIALS AND METHODS A retrospective review of carotid CT angiography studies and brain MR imaging in patients with TIA during the past 3 years (n = 135) was performed to determine the presence of carotid webs by 2 experienced neuroradiologists according to previously published criteria. Demographics and clinical and imaging characteristics are shown by descriptive statistics for patients with an identified carotid web. The agreement in the detection of carotid webs between 2 neuroradiologists was examined using κ statistics. RESULTS There were 12 (8.9%) carotid webs at the symptomatic bifurcation and 1 carotid web (0.7%) at the asymptomatic bifurcation, and no hyperintensity was seen on DWI of these 12 patients. Eight of these 12 (75%) patients with a carotid web were women. None of the 12 patients with a carotid web had major risk factors or other causes of TIA. Fair-to-good interobserver agreement (κ = 0.87) was seen for diagnosing a carotid web with CT angiography. The rate (10/12, 83.3%) of short-term recurrent episodes of TIA in patients with TIA with a carotid web was significantly higher than that of patients without a carotid web (15/123, 12.2%) (P < .001). CONCLUSIONS The incidence of carotid web in patients with TIA was 8.9%. There is an association between carotid web and patients with TIA without other identified risks. Carotid web may be an underestimated risk factor for TIA.
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Affiliation(s)
- H Hu
- From the Institute of Diagnostic and Interventional Radiology (H.H., X.Z., J.Z., Y.L.)
| | - X Zhang
- From the Institute of Diagnostic and Interventional Radiology (H.H., X.Z., J.Z., Y.L.)
| | - J Zhao
- From the Institute of Diagnostic and Interventional Radiology (H.H., X.Z., J.Z., Y.L.)
| | - Y Li
- From the Institute of Diagnostic and Interventional Radiology (H.H., X.Z., J.Z., Y.L.)
| | - Y Zhao
- Department of Neurology (Y.Z.), Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, People's Republic of China
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Åsberg S, Farahmand B, Hasvold P, Johansson S, Appelros P. Non-cardioembolic TIA and ischemic stroke: Implications of severity. Acta Neurol Scand 2018; 138:369-376. [PMID: 29920644 DOI: 10.1111/ane.12974] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/29/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Our purpose was to explore major vascular and bleeding outcomes in relation to risk and severity scores (ABCD2 or NIHSS) in patients with transient ischemic attack (TIA) or acute ischemic stroke (AIS). METHODS This nationwide observational study was based on data from 4 national registries. Outcomes were assessed by Kaplan-Meier and Cox regression analyses. RESULTS The total cohort comprised 21 268 patients (median age 73 years, 47.6% females). Based on ABCD2-score, the TIA-population (n = 10 174) was divided into low-risk (0-3 p, n = 3463) and high-risk (4-7 p, n = 6711). Based on NIHSS-score, the AIS-population (n = 11 454) was divided into minor (0-5 p, n = 8596), moderate (6-10 p, n = 1630) and severe (≥11 p, n = 1228). During follow-up (mean 1.7 years), the composite endpoint of stroke, myocardial infarction or death occurred in 3572 (16.5%) of all the patients, and major bleeding in 668 (3.1%) patients. Using low-risk TIA as reference, the adjusted hazard ratios (HR, 95% CI) of the composite endpoint were 1.41 (1.23-1.62) for high-risk TIA, 1.94 (1.70-2.22) for minor, 2.86 (2.45-3.34) for moderate and 4.18 (3.57-4.90) for severe stroke. When analyzed separately, the association with increased risk remained significant for stroke and death, but not for myocardial infarction. The HR of major bleeding were 1.31 (0.99-1.73) for high-risk TIA, 1.49 (1.13-1.95) for minor, 1.54 (1.08-2.21) for moderate and 2.10 (1.44-3.05) for severe stroke. CONCLUSIONS This study confirms the association between severity of the index ischemic stroke and risk of future major vascular and bleeding events, and highlights the increased risk also for patients with high-risk TIA.
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Affiliation(s)
- S. Åsberg
- Department of Medical Sciences; Uppsala University; Uppsala Sweden
| | | | - P. Hasvold
- AstraZeneca Nordic Baltic; Södertälje Sweden
| | | | - P. Appelros
- Faculty of Medicine and Health; University Health Care Research Center; Örebro University; Örebro Sweden
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Malsch C, Liman T, Wiedmann S, Siegerink B, Georgakis MK, Tiedt S, Endres M, Heuschmann PU. Outcome after stroke attributable to baseline factors-The PROSpective Cohort with Incident Stroke (PROSCIS). PLoS One 2018; 13:e0204285. [PMID: 30256828 PMCID: PMC6157870 DOI: 10.1371/journal.pone.0204285] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/04/2018] [Indexed: 11/26/2022] Open
Abstract
Background The impact of risk factors on poor outcome after ischemic stroke is well known, but estimating the amount of poor outcome attributable to single factors is challenging in presence of multimorbidity. We aim to compare population attributable risk estimates obtained from different statistical approaches regarding their consistency. We use a real-life data set from the PROSCIS study to identify predictors for mortality and functional impairment one year after first-ever ischemic stroke and quantify their contribution to poor outcome using population attributable risks. Methods The PROSpective Cohort with Incident Stroke (PROSCIS) is a prospective observational hospital-based cohort study of patients after first-ever stroke conducted independently in Berlin (PROSCIS-B) and Munich (PROSCIS-M). The association of baseline factors with poor outcome one year after stroke in PROSCIS-B was analysed using multiple logistic regression analysis and population attributable risks were calculated, which were estimated using sequential population attributable risk based on a multiple generalized additive regression model, doubly robust estimation, as well as using average sequential population attributable risk. Findings were reproduced in an independent validation sample from PROSCIS-M. Results Out of 507 patients with available outcome information after 12 months in PROSCIS-B, 20.5% suffered from poor outcome. Factors associated with poor outcome were age, pre-stroke physical disability, stroke severity (NIHSS), education, and diabetes mellitus. The order of risk factors ranked by magnitudes of population attributable risk was almost similar for all methods, but population attributable risk estimates varied markedly between the methods. In PROSCIS-M, incidence of poor outcome and distribution of baseline parameters were comparable. The multiple logistic regression model could be reproduced for all predictors, except pre-stroke physical disability. Similar to PROSCIS-B, the order of risk factors ranked by magnitudes of population attributable risk was almost similar for all methods, but magnitudes of population attributable risk differed markedly between the methods. Conclusions Ranking of risk factors by population impact is not affected by the different statistical approaches. Thus, for a rational decision on which risk factor to target in disease interventions, population attributable risk is a supportive tool. However, population attributable risk estimates are difficult to interpret and are not comparable when they origin from studies applying different methodology. The predictors for poor outcome identified in PROSCIS-B have a relevant impact on mortality and functional impairment one year after first-ever ischemic stroke.
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Affiliation(s)
- Carolin Malsch
- Institute of Clinical Epidemiology and Biometry, University Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University of Würzburg, Würzburg, Germany
- * E-mail:
| | - Thomas Liman
- Klinik und Hochschulambulanz für Neurologie, Charité - Universitätsmedizin Berlin, Berlin, Germany
- Center for Stroke Research Berlin, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Silke Wiedmann
- Institute of Clinical Epidemiology and Biometry, University Würzburg, Würzburg, Germany
| | - Bob Siegerink
- Center for Stroke Research Berlin, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Marios K. Georgakis
- Institute for Stroke and Dementia Research, University Hospital of Ludwig-Maximilians-University, Munich, Germany
| | - Steffen Tiedt
- Institute for Stroke and Dementia Research, University Hospital of Ludwig-Maximilians-University, Munich, Germany
| | - Matthias Endres
- Klinik und Hochschulambulanz für Neurologie, Charité - Universitätsmedizin Berlin, Berlin, Germany
- Center for Stroke Research Berlin, Charité - Universitätsmedizin Berlin, Berlin, Germany
- German Center for Neurodegenerative Diseases Partner Site Berlin, Berlin, Germany
- German Center for Cardiovascular Research Partner Site Berlin, Berlin, Germany
- Berlin Institute of Health, Berlin, Germany
| | - Peter U. Heuschmann
- Institute of Clinical Epidemiology and Biometry, University Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University of Würzburg, Würzburg, Germany
- Clinical Trial Centre Würzburg, University Hospital Würzburg, Würzburg, Germany
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