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Abramovitz Fouks A, Yaghi S, Selim MH, Gökçal E, Das AS, Rotschild O, Silverman SB, Singhal AB, Kapur S, Greenberg SM, Gurol ME. Left atrial appendage closure in patients with atrial fibrillation and acute ischaemic stroke despite anticoagulation. Stroke Vasc Neurol 2024:svn-2024-003143. [PMID: 38862182 DOI: 10.1136/svn-2024-003143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 04/14/2024] [Indexed: 06/13/2024] Open
Abstract
BACKGROUND The occurrence of acute ischaemic stroke (AIS) while using oral anticoagulants (OAC) is an increasingly recognised problem among nonvalvular atrial fibrillation (NVAF) patients. We aimed to elucidate the potential role of left atrial appendage closure (LAAC) for stroke prevention in patients with AIS despite OAC use (AIS-despite-OAC). METHODS We retrospectively collected baseline and follow-up data from consecutive NVAF patients who had AIS-despite-OAC and subsequently underwent endovascular LAAC, between January 2015 and October 2021. The primary outcome measure was the occurrence of AIS after LAAC, and the safety outcome was symptomatic intracerebral haemorrhage (ICH). RESULTS 29 patients had LAAC specifically because of AIS-despite-OAC. The mean age at the time of the procedure was 73.4±8.7, 13 were female (44.82%). The mean CHA2DS2-VASc score was 5.96±1.32, with an expected AIS risk of 8.44 per 100 patient-years. 14 patients (48%) had two or more past AIS-despite-OAC. After LAAC, 27 patients (93.10%) were discharged on OAC which was discontinued in 17 (58.62%) after transoesophageal echocardiogram at 6 weeks. Over a mean of 1.75±1.0 years follow-up after LAAC, one patient had an AIS (incidence rate (IR) 1.97 per 100 patient-years). One patient with severe cerebral microangiopathy had a small ICH while on direct OAC and antiplatelet 647 days after LAAC. CONCLUSIONS LAAC in AIS-despite-OAC patients demonstrated a low annual AIS recurrence rate in our cohort (1.97%) compared with the expected IR based on their CHA2DS2-VASc scores (8.44%) and to recent large series of AIS-despite-OAC patients treated with OAC/aspirin only (5.3%-8.9%). These hypothesis-generating findings support randomised trials of LAAC in AIS-despite-OAC patients.
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Affiliation(s)
| | - Shadi Yaghi
- Neurology, Brown University, Warren Alpert Medical School, Providence, RI, USA
| | - Magdy H Selim
- Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Elif Gökçal
- Neurology, Massachussets General Hospital, Harvard Medical School, Boston, MA, USA
| | - Alvin S Das
- Neurology, Massachussets General Hospital, Harvard Medical School, Boston, MA, USA
- Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Ofer Rotschild
- Neurology, Massachussets General Hospital, Harvard Medical School, Boston, MA, USA
| | - Scott B Silverman
- Neurology, Massachussets General Hospital, Harvard Medical School, Boston, MA, USA
| | - Aneesh B Singhal
- Neurology, Massachussets General Hospital, Harvard Medical School, Boston, MA, USA
| | - Sunil Kapur
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Steven M Greenberg
- Neurology, Massachussets General Hospital, Harvard Medical School, Boston, MA, USA
| | - Mahmut Edip Gurol
- Neurology, Massachussets General Hospital, Harvard Medical School, Boston, MA, USA
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Costa G, Griné M, Simões M, Oliveira-Santos M, Paiva L, Costa M, Gonçalves L. Left atrial appendage occlusion for recurrent stroke while on oral anticoagulation: a case series. Eur Heart J Case Rep 2024; 8:ytae157. [PMID: 38707534 PMCID: PMC11065339 DOI: 10.1093/ehjcr/ytae157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 03/04/2024] [Accepted: 03/20/2024] [Indexed: 05/07/2024]
Abstract
Background Clinical practice guidelines recommend oral anticoagulation (OAC) for stroke prevention in selected patients with atrial fibrillation (AF). However, some patients still experience thrombo-embolic events despite adequate anticoagulation. The optimal management of these cases remains uncertain, leading to practice pattern variability. We present a series of three cases illustrating the use of left atrial appendage occlusion (LAAO) as an adjunctive stroke prevention strategy in AF patients with recurrent thrombo-embolic events despite adequate anticoagulation. Case summary Case one describes an 89-year-old female on apixaban who presented with a thrombus and underwent successful mechanical thrombectomy. Left atrial appendage occlusion was performed, and no subsequent thrombo-embolic events were reported. Case 2 involves a 72-year-old female on full-dose apixaban who experienced recurrent strokes despite adequate anticoagulation. Thrombectomy was performed twice, and complications arose during LAAO. The patient was discharged on warfarin + clopidogrel and remained event-free at the six-month follow-up. Case 3 features an 88-year-old female on rivaroxaban who experienced recurrent cerebral ischaemic events and gastrointestinal bleeding. Left atrial appendage occlusion using an Amplatzer Amulet™ device was successful, and the patient remained event-free at the one-year follow-up. Discussion This case series emphasizes the complexity of stroke prevention in AF patients and underscores the need for an individualized approach. Incorporating LAAO alongside OAC can provide additional stroke protection for patients with inadequate response to anticoagulation. Further randomized controlled trials are needed to evaluate the efficacy and safety of this approach. In light of the limited evidence available, these cases contribute to the growing body of knowledge on the potential role of LAAO in secondary stroke prevention in AF patients with recurrent thrombo-embolic events despite appropriate anticoagulation.
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Affiliation(s)
- Gonçalo Costa
- Serviço de Cardiologia, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
- Faculdade de Medicina da Universidade de Coimbra, Azinhaga de Santa Comba, Celas, 3000-548 Coimbra, Portugal
| | - Mafalda Griné
- Serviço de Cardiologia, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Mariana Simões
- Serviço de Cardiologia, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Manuel Oliveira-Santos
- Serviço de Cardiologia, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
- Faculdade de Medicina da Universidade de Coimbra, Azinhaga de Santa Comba, Celas, 3000-548 Coimbra, Portugal
| | - Luís Paiva
- Serviço de Cardiologia, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Marco Costa
- Serviço de Cardiologia, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
| | - Lino Gonçalves
- Serviço de Cardiologia, Centro Hospitalar e Universitário de Coimbra, Praceta Professor Mota Pinto, 3004-561 Coimbra, Portugal
- Faculdade de Medicina da Universidade de Coimbra, Azinhaga de Santa Comba, Celas, 3000-548 Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Coimbra, Portugal
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Rekk K, Arnet I, Dietrich F, Polymeris AA, Lyrer PA, Engelter ST, Schaedelin S, Allemann SS. Relationship between electronically monitored adherence to direct oral anticoagulants and ischemic or hemorrhagic events after an initial ischemic stroke-A case control study. PLoS One 2024; 19:e0301421. [PMID: 38662779 PMCID: PMC11045050 DOI: 10.1371/journal.pone.0301421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 03/15/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND Patients with atrial fibrillation (AF) have a high risk for recurrent clinical events after an ischemic stroke. Direct oral anticoagulants (DOAC) are prescribed for secondary prevention. Adherence to DOAC is crucial mainly because of their short elimination half-life. Non-adherence to DOAC can negatively impact patients' outcomes. The relationship between (non-)adherence and recurrent clinical events is unknown in AF patients after initial stroke. We investigated adherence to DOAC in stroke survivors with AF who were included in the MAAESTRO study at the University Hospital Basel, Switzerland, between 2008 and 2022. METHODS This study is a secondary analysis of data from MAAESTRO with a matched nested case-control design and 1:2 ratio. DOAC intake was measured with a small electronic device (Time4MedTM). We defined two arbitrary intervals of 17 days and 95 days as the longest time spans with electronic monitoring data per patient to maximize the number of participants with adequate amount of observation time available for analysis. Taking and timing adherence were calculated retrospectively i.e., prior to the recurrent event for cases. Trendline analysis of adherence over 95 days was calculated. Linear regression analysis was performed after adjusting for the co-variables age and daily pill burden. Sensitivity analysis was performed with controls for intervals in the reverse direction (prospectively). RESULTS We analyzed 11 cases and 22 matched controls (mean age: 75.9 ± 9.2 years vs. 73.1 ± 8.4 years; n.s.) with similar stroke characteristics (NIHSS, mRS, MoCA) and 36.4% women in each group. Mean adherence values were high and similar between cases and controls (95 days taking: 87.0 ± 18.9% (cases) vs. 90.8 ± 9.8% (controls), n.s.; similar values for timing adherence). Six hemorrhagic and five ischemic events had occurred. Compared to controls, a significantly higher 95 days taking adherence was observed for hemorrhagic events (96.0 ± 5.0% (cases) vs. 88.1 ± 11.5% (controls); p<0.01) and a significantly lower 95 days taking adherence was observed for ischemic events (75.7 ± 24.8% (cases) vs. 94.2 ± 6.2% (controls), p = 0.024). Values for timing adherence were similar. A non-significant downward linear trend of adherence was observed over 95 days independently of the clinical events. The sensitivity analysis showed that the direction of the interval had negligible impact on the 95 days adherence. CONCLUSION Because recurrent ischemic events after an AF-related stroke were associated with low adherence to DOAC <76%, adherence enhancing interventions seem crucial in anticoagulated AF-patients. However, AF-patients with high adherence might benefit from a regular re-assessment of the bleeding risk as hemorrhagic complications were associated with adherence to DOAC >96%. TRIAL REGISTRATION ClinicalTrials.gov NCT03344146.
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Affiliation(s)
- Katharina Rekk
- Department of Pharmaceutical Sciences, Pharmaceutical Care Research Group, University of Basel, Basel, Switzerland
| | - Isabelle Arnet
- Department of Pharmaceutical Sciences, Pharmaceutical Care Research Group, University of Basel, Basel, Switzerland
| | - Fine Dietrich
- Department of Pharmaceutical Sciences, Pharmaceutical Care Research Group, University of Basel, Basel, Switzerland
| | - Alexandros A. Polymeris
- Department of Neurology and Stroke Centre, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Philippe A. Lyrer
- Department of Neurology and Stroke Centre, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Stefan T. Engelter
- Department of Neurology and Stroke Centre, University Hospital Basel and University of Basel, Basel, Switzerland
- Department of Geriatric Medicine, Neurology and Neurorehabilitation, Felix Platter Hospital, University of Basel, Basel, Switzerland
| | - Sabine Schaedelin
- Department of Clinical Research, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Samuel S. Allemann
- Department of Pharmaceutical Sciences, Pharmaceutical Care Research Group, University of Basel, Basel, Switzerland
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Seiffge DJ, Cancelloni V, Räber L, Paciaroni M, Metzner A, Kirchhof P, Fischer U, Werring DJ, Shoamanesh A, Caso V. Secondary stroke prevention in people with atrial fibrillation: treatments and trials. Lancet Neurol 2024; 23:404-417. [PMID: 38508836 DOI: 10.1016/s1474-4422(24)00037-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 01/19/2024] [Accepted: 01/24/2024] [Indexed: 03/22/2024]
Abstract
Atrial fibrillation is one of the most common cardiac arrhythmias and is a major cause of ischaemic stroke. Recent findings indicate the importance of atrial fibrillation burden (device-detected, subclinical, or paroxysmal and persistent or permanent) and whether atrial fibrillation was known before stroke onset or diagnosed after stroke for the risk of recurrence. Secondary prevention in patients with atrial fibrillation and stroke aims to reduce the risk of recurrent ischaemic stroke. Findings from randomised controlled trials assessing the optimal timing to introduce direct oral anticoagulant therapy after a stroke show that early start (ie, within 48 h for minor to moderate strokes and within 4-5 days for large strokes) seems safe and could reduce the risk of early recurrence. Other promising developments regarding early rhythm control, left atrial appendage occlusion, and novel factor XI inhibitor oral anticoagulants suggest that these therapies have the potential to further reduce the risk of stroke. Secondary prevention strategies in patients with atrial fibrillation who have a stroke despite oral anticoagulation therapy is an unmet medical need. Research advances suggest a heterogeneous spectrum of causes, and ongoing trials are investigating new approaches for secondary prevention in this vulnerable patient group. In patients with atrial fibrillation and a history of intracerebral haemorrhage, the latest data from randomised controlled trials on stroke prevention shows that oral anticoagulation reduces the risk of ischaemic stroke but more data are needed to define the safety profile.
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Affiliation(s)
- David J Seiffge
- Department of Neurology, Inselspital University Hospital Bern and University of Bern, Switzerland.
| | - Virginia Cancelloni
- Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia, Italy
| | - Lorenz Räber
- Department of Cardiology, Inselspital University Hospital Bern and University of Bern, Switzerland
| | - Maurizio Paciaroni
- Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia, Italy
| | - Andreas Metzner
- Department of Cardiology, University Heart and Vascular Center Hamburg, University Center Hamburg Eppendorf, Hamburg, Germany; German Center for Cardiovascular Research, partner site Hamburg, Kiel, and Lübeck, Germany
| | - Paulus Kirchhof
- Department of Cardiology, University Heart and Vascular Center Hamburg, University Center Hamburg Eppendorf, Hamburg, Germany; German Center for Cardiovascular Research, partner site Hamburg, Kiel, and Lübeck, Germany; Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK
| | - Urs Fischer
- Department of Neurology, Inselspital University Hospital Bern and University of Bern, Switzerland; Department of Neurology, University Hospital Basel, Switzerland
| | - David J Werring
- Stroke Research Centre, UCL Queen Square Institute of Neurology, London, UK
| | - Ashkan Shoamanesh
- Division of Neurology, Department of Medicine, Population Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Valeria Caso
- Stroke Unit, Santa Maria della Misericordia Hospital, University of Perugia, Perugia, Italy
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5
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Guo X, Du J, Yang Y, Wu M, Ou W, Han X, Wang Z, Jin J, Zhang P, Zhang Z, Chen G, Long M, Yin G, Liu T, Wang X, Li D, Chen M, Dong Y, Lai C, Zhang X, Yi Y, Xiang J, Chen C, Unverdorben M, Ma C. Edoxaban for stroke prevention in atrial fibrillation and factors associated with dosing: patient characteristics from the prospective observational ETNA-AF-China registry. Sci Rep 2024; 14:2778. [PMID: 38307927 PMCID: PMC10837439 DOI: 10.1038/s41598-024-51776-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 01/09/2024] [Indexed: 02/04/2024] Open
Abstract
Real-world data on effectiveness and safety of a single non-vitamin K antagonist oral anticoagulant in the Chinese population with atrial fibrillation (AF) are limited. This study reports characteristics of patients treated with edoxaban and factors associated with dosing patterns from routine care in China. ETNA-AF-China (NCT04747496) is a multicentre, prospective, observational study enrolling edoxaban-treated patients from four economic regions with a targeted 2-year follow-up. Of the 4930 patients with AF (mean age: 70.2 ± 9.5 years; male, 57.1%), the mean creatinine clearance (CrCl), CHA2DS2-VASc, and HAS-BLED scores were 71.2 mL/min, 2.9, and 1.6. Overall, 6.4% of patients were perceived as frail by investigators. Available label dose reduction criteria (N = 4232) revealed that 3278 (77.5%) patients received recommended doses and 954 (22.5%) non-recommended doses. Northeast (53.0%) and West (43.1%) regions had the highest prescriptions of 60 mg and 30 mg recommended doses, respectively. Non-recommended 30 mg doses were more frequently prescribed in patients with antiplatelet use and history of heart failure than recommended 60 mg. Multivariate analysis identified advanced age as the strongest associated factor with non-recommended doses. Frailty had the strongest association with 30 mg except for age, and history of TIA was the most relevant factor associated with 60 mg. In conclusion, patients in the ETNA-AF-China study were predominantly aged 65 years and older, had mild-to-moderate renal impairment and good label adherence. Advanced age was associated with non-recommended doses, with frailty most common for non-recommended 30 mg and a history of TIA for the non-recommended 60 mg dose.
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Affiliation(s)
- Xueyuan Guo
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Juan Du
- Medical Department, Daiichi Sankyo (China) Holdings Co., Ltd, Shanghai, 200040, China
| | - Yang Yang
- Department of Cardiology, The Second Affiliated Hospital of Shenyang Medical College, Shenyang, 110004, Liaoning, China
| | - Mingxing Wu
- Department of Cardiology, Xiangtan Central Hospital, Xiangtan, 411199, Hunan, China
| | - Wenchao Ou
- Department of Cardiology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, Guangdong, China
| | - Xuebin Han
- Department of Cardiology, Shanxi Cardiovascular Hospital, Taiyuan, 030024, Shanxi, China
| | - Zhifang Wang
- Deparment of Vasculocardiology, Xinxiang Central Hospital, Xinxiang, 453001, Henan, China
| | - Jing Jin
- Department of Cardiology, The Fourth Hospital of Changsha, Changsha, 410006, Hunan, China
| | - Ping Zhang
- Department of Cardiology, Beijing Tsinghua Changgung Hospital, Beijing, 102218, Beijing, China
| | - Zheng Zhang
- Department of Cardiology, QingPu Branch of Zhongshan Hospital Affiliated to Fudan University, Shanghai, 201799, Shanghai, China
| | - Guoqin Chen
- Department of Cardiology, Guangzhou Panyu Central Hospital, Guangzhou, 511486, Guangdong, China
| | - Mingzhi Long
- Department of Cardiology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, 210003, Jiangsu, China
| | - Guotian Yin
- Department of Cardiology, The Third Affiliated Hospital Of Xinxiang Medical University, Xinxiang, 453699, Henan, China
| | - Tong Liu
- Department of Cardiology, The Second Hospital of Tianjin Medical University, Tianjin, 300211, Tianjin, China
| | - Xiaoyan Wang
- Department of Cardiology, Affiliated Hospital of Jiangnan University, Wuxi, 214125, Jiangsu, China
| | - Dongsheng Li
- Department of Cardiology, Wuhan Third Hospital, Wuhan, 430074, Hubei, China
| | - Manhua Chen
- Department of Cardiology, The Central Hospital of Wuhan, Wuhan, 430014, Hubei, China
| | - Yugang Dong
- Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, Guangdong, China
| | - Chunlin Lai
- Department of Cardiology, Shanxi Provincial People's Hospital, Taiyuan, 043599, Shanxi, China
| | - Xuelian Zhang
- Department of Cardiology, Jilin Province People's Hospital, Changchun, 130021, Jilin, China
| | - Yuan Yi
- Medical Department, Daiichi Sankyo (China) Holdings Co., Ltd, Shanghai, 200040, China
| | - Jing Xiang
- Medical Department, Daiichi Sankyo (China) Holdings Co., Ltd, Shanghai, 200040, China
| | - Cathy Chen
- Medical Department, Daiichi Sankyo Inc., Basking Ridge, NJ, 07920-2311, USA
| | - Martin Unverdorben
- Medical Department, Daiichi Sankyo Inc., Basking Ridge, NJ, 07920-2311, USA
| | - Changsheng Ma
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China.
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6
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Chao TF, Potpara TS, Lip GY. Atrial fibrillation: stroke prevention. THE LANCET REGIONAL HEALTH. EUROPE 2024; 37:100797. [PMID: 38362551 PMCID: PMC10867001 DOI: 10.1016/j.lanepe.2023.100797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 11/11/2023] [Accepted: 11/15/2023] [Indexed: 02/17/2024]
Abstract
Stroke prevention is central to the management of patients with atrial fibrillation (AF) which has moved towards a more holistic or integrative care approach. The published evidence suggests that management of AF patients following such a holistic approach based on the Atrial fibrillation Better Care (ABC) pathway is associated with a lower risk of stroke and adverse events. Risk assessment, re-assessment and use of direct oral anticoagulants (DOACs) are important for stroke prevention in AF. The stroke and bleeding risks of AF patients are not static and should be re-assessed regularly. Bleeding risk assessment is to address and mitigate modifiable bleeding risk factors, and to identify high bleeding risk patients for early review and follow-up. Well-controlled comorbidities and healthy lifestyles also play an important role to achieve a better clinical outcome. Digital health solutions are increasingly relevant in the diagnosis and management of patients with AF, with the potential to improve stroke prevention. In this review, we provide an update on stroke prevention in AF, including importance of holistic management, risk assessment/re-assessment, and stroke prevention for special AF populations. Evidence-based and structured management of AF patients would reduce the risk of stroke and other adverse events.
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Affiliation(s)
- Tze-Fan Chao
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Institute of Clinical Medicine, and Cardiovascular Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Tatjana S. Potpara
- School of Medicine, University of Belgrade, Belgrade, Serbia
- Cardiology Clinic, Clinical Centre of Serbia, Belgrade, Serbia
| | - Gregory Y.H. Lip
- Liverpool Centre for Cardiovascular Science, University of Liverpool, Liverpool John Moores University and Liverpool Heart & Chest Hospital, Liverpool, United Kingdom
- Danish Center for Clinical Health Services Research, Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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7
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Zhen S, Chu F, Kodesh A, Kim J. Ischaemic stroke in a patient with non-valvular atrial fibrillation (NVAF) despite non-vitamin K oral anticoagulant (NOAC) therapy. BMJ Case Rep 2024; 17:e258761. [PMID: 38199668 PMCID: PMC10806926 DOI: 10.1136/bcr-2023-258761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024] Open
Abstract
Primary stroke prevention in non-valvular atrial fibrillation (NVAF) is primarily with non-vitamin K oral anticoagulant (NOAC) therapy. However, 20-36% of ischaemic strokes seem to occur in patients with atrial fibrillation while already on anticoagulation. We present a case of an ischaemic stroke in an elderly female in her 70s with medical history significant for hypertension and NVAF. She had a CHA2DS2-VASc score of 3 and was on apixaban for thromboprophylaxis. She presented with neurological deficits consistent with a left middle cerebral artery stroke, confirmed via head imaging; the most likely stroke aetiology was determined to be cardioembolic in the setting of NVAF. She was treated with continuation of her apixaban at the same dosage She displayed improved function, although with residual expressive aphasia at her 2-month neurology follow-up. Cardioembolic ischaemic stroke in NVAF despite current NOAC therapy does not have current management guidelines.
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Affiliation(s)
- Simon Zhen
- Medicine, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Fion Chu
- Medicine, Albert Einstein College of Medicine, Bronx, New York, USA
| | - Afek Kodesh
- Internal Medicine, Montefiore Medical Center, Bronx, New York, USA
| | - Jisoon Kim
- Internal Medicine, Montefiore Medical Center, Bronx, New York, USA
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8
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Gurol ME, Wright CB, Janis S, Smith EE, Gokcal E, Reddy VY, Merino JG, Hsu JC. Stroke Prevention in Atrial Fibrillation: Our Current Failures and Required Research. Stroke 2024; 55:214-225. [PMID: 38134262 PMCID: PMC11167726 DOI: 10.1161/strokeaha.123.040447] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2023]
Abstract
Nonvalvular atrial fibrillation is a common rhythm disorder of middle-aged to older adults that can cause ischemic strokes and systemic embolism. Lifelong use of oral anticoagulants reduces the risk of these ischemic events but increases the risk of major and clinically relevant hemorrhages. These medications also require strict compliance for efficacy, and they have nontrivial failure rates in higher-risk patients. Left atrial appendage closure is a nonpharmacological method to prevent ischemic strokes in atrial fibrillation without the need for lifelong anticoagulant use, but this procedure has the potential for complications and residual embolic events. This workshop of the Roundtable of Academia and Industry for Stroke Prevention discussed future research needed to further decrease the ischemic and hemorrhagic risks among patients with atrial fibrillation. A direct thrombin inhibitor, factor Xa inhibitors, and left atrial appendage closure are FDA-approved approaches whereas factor XIa inhibitors are currently being studied in phase 3 randomized controlled trials for stroke prevention. The benefits, risks, and shortcomings of these treatments and future research required in different high-risk patient populations are reviewed in this consensus statement.
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Affiliation(s)
- M Edip Gurol
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston (M.E.G., E.G.)
| | - Clinton B Wright
- Division of Clinical Research, NINDS, Bethesda, MD (C.B.W., S.J.)
| | | | - Eric E Smith
- Department of Clinical Neurosciences, University of Calgary, Alberta, Canada (E.E.S.)
| | - Elif Gokcal
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston (M.E.G., E.G.)
| | - Vivek Y Reddy
- Helmsley Trust Electrophysiology Center, Icahn School of Medicine at Mount Sinai, New York (V.Y.R.)
| | - José G Merino
- Department of Neurology, Georgetown University Medical Center (J.G.M.)
| | - Jonathan C Hsu
- Department of Cardiology, University of California, San Diego, La Jolla (J.C.H.)
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9
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Rigutini AG. The Impact of Atherosclerotic Burden on Vascular Outcomes in Patients with Stroke and Atrial Fibrillation: The ATHENA study. Clin Appl Thromb Hemost 2024; 30:10760296241240746. [PMID: 38562096 PMCID: PMC10989045 DOI: 10.1177/10760296241240746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/26/2024] [Accepted: 03/04/2024] [Indexed: 04/04/2024] Open
Abstract
Introduction: Patients with ischemic stroke (IS) and atrial fibrillation (AF) face a higher risk of recurrent vascular events. This study evaluates the impact of atherosclerotic vascular disease burden across different vascular territories on the risk of vascular events in patients with recent ischemic stroke and AF within 90 days. Patients and Methods: We included patients with IS and AF from the International RAF network in a prospective 90-day follow-up. Atherosclerotic vascular disease was identified by at least one of the following: Symptomatic ischemic heart disease, symptomatic peripheral artery disease, internal carotid stenosis ≥50%, or the presence of plaques in the aorta. The primary outcome was a composite of stroke, transient ischemic attack, systemic embolism, cerebral bleeding, and major extracranial bleeding within 90 days postacute stroke. Patients were categorized into 5 groups based on the number of affected atherosclerotic vascular territories, with those with no atherosclerotic vascular disease as the reference. Kaplan-Meier curves were generated and compared using the log-rank test to determine the predictive value of the number of diseased territories for the risk of events. Data analysis was performed with SPSS/PC Win Package 25.0. Results: Of the 2148 patients (mean age 77.59; 53.86% female), 744 (34.60%) had atherosclerosis. Multivariable analysis revealed that involvement of 3 (hazard ratio [HR] 2.80, 95% confidence interval [CI]: 1.20-6.53) or 4 (HR 6.81, 95% CI: 1.02-36.24) vascular territories was significantly associated with the risk of combined events. Conclusions: In patients with recent ischemic stroke and AF, atherosclerosis across multiple territories correlates with a higher risk of future vascular events.
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Affiliation(s)
- Andrea Galeazzo Rigutini
- Stroke Unit and Division of Cardiovascular Medicine, University of Perugia, Italy, Perugia, Italy
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10
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Suomalainen OP, Martinez-Majander N, Broman J, Mannismäki L, Aro A, Curtze S, Pakarinen S, Lehto M, Putaala J. Stroke in Patients with Atrial Fibrillation: Epidemiology, Screening, and Prognosis. J Clin Med 2023; 13:30. [PMID: 38202037 PMCID: PMC10779359 DOI: 10.3390/jcm13010030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/14/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Atrial fibrillation (AF) is the most common sustained arrythmia and one of the strongest risk factors and causal mechanisms of ischemic stroke (IS). Acute IS due to AF tends to be more severe than with other etiology of IS and patients with treated AF have reported to experience worse outcomes after endovascular treatment compared with patients without AF. As cardioembolism accounts for more than a fifth of ISs and the risk of future stroke can be mitigated with effective anticoagulation, which has been shown to be effective and safe in patients with paroxysmal or sustained AF, the screening of patients with cryptogenic IS (CIS) for AF is paramount. Embolic stroke of undetermined source (ESUS) is a subtype of CIS with a high likelihood of cardioembolism. The European Stroke Organization and European Society of Cardiology guidelines recommend at least 72 h of screening when AF is suspected. The longer the screening and the earlier the time point after acute IS, the more likely the AF paroxysm is found. Several methods are available for short-term screening of AF, including in-hospital monitoring and wearable electrocardiogram recorders for home monitoring. Implantable loop monitors provide an effective long-term method to screen patients with high risk of AF after IS and artificial intelligence and convolutional neural networks may enhance the efficacy of AF screening in the future. Direct oral anticoagulants (DOACs) are preferred over vitamin K antagonists in both primary and secondary prevention of IS in AF patients. Recent data from the randomized controlled trials (RCT) also suggest that early initiation of DOAC treatment after acute IS is safe compared to later initiation. Anticoagulation treatment may still predispose for intracranial bleeding, particularly among patients with prior cerebrovascular events. Left atrial appendix closure offers an optional treatment choice for patients with prior intracranial hemorrhage and may offer an alternative to oral anticoagulation even for patients with IS, but these indications await validation in ongoing RCTs. There are still controversies related to the association of found AF paroxysms in CIS patients with prolonged screening, pertaining to the optimal duration of screening and screening strategies with prolonged monitoring techniques in patients with ESUS. In this review, we summarize the current knowledge of epidemiology, screening, and prognosis in AF patients with stroke.
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Affiliation(s)
- Olli Pekka Suomalainen
- Departments of Neurology, Helsinki University Hospital, University of Helsinki, Haartmaninkatu 4, P.O. Box 340, 00290 Helsinki, Finland; (N.M.-M.); (J.B.); (L.M.); (S.C.); (J.P.)
| | - Nicolas Martinez-Majander
- Departments of Neurology, Helsinki University Hospital, University of Helsinki, Haartmaninkatu 4, P.O. Box 340, 00290 Helsinki, Finland; (N.M.-M.); (J.B.); (L.M.); (S.C.); (J.P.)
| | - Jenna Broman
- Departments of Neurology, Helsinki University Hospital, University of Helsinki, Haartmaninkatu 4, P.O. Box 340, 00290 Helsinki, Finland; (N.M.-M.); (J.B.); (L.M.); (S.C.); (J.P.)
| | - Laura Mannismäki
- Departments of Neurology, Helsinki University Hospital, University of Helsinki, Haartmaninkatu 4, P.O. Box 340, 00290 Helsinki, Finland; (N.M.-M.); (J.B.); (L.M.); (S.C.); (J.P.)
| | - Aapo Aro
- Departments of Cardiology, Helsinki University Hospital, University of Helsinki, 00290 Helsinki, Finland; (A.A.); (S.P.); (M.L.)
| | - Sami Curtze
- Departments of Neurology, Helsinki University Hospital, University of Helsinki, Haartmaninkatu 4, P.O. Box 340, 00290 Helsinki, Finland; (N.M.-M.); (J.B.); (L.M.); (S.C.); (J.P.)
| | - Sami Pakarinen
- Departments of Cardiology, Helsinki University Hospital, University of Helsinki, 00290 Helsinki, Finland; (A.A.); (S.P.); (M.L.)
| | - Mika Lehto
- Departments of Cardiology, Helsinki University Hospital, University of Helsinki, 00290 Helsinki, Finland; (A.A.); (S.P.); (M.L.)
| | - Jukka Putaala
- Departments of Neurology, Helsinki University Hospital, University of Helsinki, Haartmaninkatu 4, P.O. Box 340, 00290 Helsinki, Finland; (N.M.-M.); (J.B.); (L.M.); (S.C.); (J.P.)
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11
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Hsieh M, Liu C, Lin S, Lin P, Chang Y, Wang C, Chen C, Sung P. Comparing Efficacy and Safety Between Patients With Atrial Fibrillation Taking Direct Oral Anticoagulants or Warfarin After Direct Oral Anticoagulant Failure. J Am Heart Assoc 2023; 12:e029979. [PMID: 38038171 PMCID: PMC10727336 DOI: 10.1161/jaha.123.029979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 09/19/2023] [Indexed: 12/02/2023]
Abstract
BACKGROUND An increased risk of recurrent stroke is noted in patients with atrial fibrillation despite direct oral anticoagulant (DOAC) use. We investigated the efficacy and safety of treatment with each of 4 different DOACs or warfarin after DOAC failure. METHODS AND RESULTS We retrospectively analyzed patients with atrial fibrillation with ischemic stroke despite DOAC treatment between January 2002 and December 2016. The different outcomes of patients with DOAC failure were compared, including recurrent ischemic stroke, major cardiovascular events, intracranial hemorrhage and subarachnoid hemorrhage, mortality, and net composite outcomes according to switching to different DOACs or vitamin K antagonist after index ischemic stroke. We identified 3759 patients with DOAC failure. A total of 84 patients experienced recurrent ischemic stroke after switching to different oral anticoagulants, with a total follow-up time of 14 years. Using the vitamin K antagonist group as a reference, switching to any of the 4 DOACs was associated with a 69% to 77% reduced risk of major cardiovascular events (adjusted hazard ratio [aHR], 0.25 [95% CI, 0.16-0.39] for apixaban, 0.23 [95% CI, 0.14-0.37] for dabigatran, 0.23 [95% CI, 0.09-0.60] for edoxaban, and 0.31 [95% CI, 0.21-0.45] for rivaroxaban), and a 69% to 83% reduced risk of net composite outcomes (aHR, 0.25 [95% CI, 0.18-0.35] for apixaban, 0.17 [95% CI, 0.11-0.25] for dabigatran, 0.31 [95% CI, 0.17-0.56] for edoxaban, and 0.31 [95% CI, 0.23-0.41] for rivaroxaban). CONCLUSIONS In Asian patients with DOAC failure, continuing DOACs after index stroke was associated with fewer undesirable outcomes than switching to a vitamin K antagonist. Alternative pharmacologic and nonpharmacologic strategies warrant investigation.
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Affiliation(s)
- Meng‐Tsang Hsieh
- Stroke Center and Department of NeurologyChi‐Mei Medical CenterTainanTaiwan
- Institute of Clinical Medicine, College of MedicineNational Cheng Kung UniversityTainanTaiwan
| | - Chi‐Hung Liu
- Stroke Center and Department of Neurology, Chang Gung Memorial Hospital, Linkou Medical Center and College of MedicineChang Gung UniversityTaoyuanTaiwan
- Institute of Health Policy and Management, College of Public HealthNational Taiwan UniversityTaipeiTaiwan
| | - Sheng‐Hsiang Lin
- Institute of Clinical Medicine, College of MedicineNational Cheng Kung UniversityTainanTaiwan
- Department of Public Health, College of MedicineNational Cheng Kung UniversityTainanTaiwan
- Biostatistics Consulting CenterNational Cheng Kung University Hospital, College of Medicine, National Cheng Kung UniversityTainanTaiwan
| | - Po‐Yu Lin
- Department of NeurologyNational Cheng Kung University Hospital, College of Medicine, National Cheng Kung UniversityTainanTaiwan
| | - Yu‐Ming Chang
- Department of NeurologyNational Cheng Kung University Hospital, College of Medicine, National Cheng Kung UniversityTainanTaiwan
| | - Chun‐Min Wang
- Department of NeurologyNational Cheng Kung University Hospital, College of Medicine, National Cheng Kung UniversityTainanTaiwan
| | - Chih‐Hung Chen
- Department of NeurologyNational Cheng Kung University Hospital, College of Medicine, National Cheng Kung UniversityTainanTaiwan
| | - Pi‐Shan Sung
- Department of NeurologyNational Cheng Kung University Hospital, College of Medicine, National Cheng Kung UniversityTainanTaiwan
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12
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Ma F, Chen J, Chang S, Huang N, Zhang W, Dai H, Zheng Q, Li R, Lin X, Liu Y, Du X, Su J, Huang X, Chen X, Hu W, Liu X, Zhang Y, Gu P, Zhang J. New score for predicting thromboembolic events in patients with atrial fibrillation using direct oral anticoagulants. Blood Coagul Fibrinolysis 2023; 34:530-537. [PMID: 37942745 DOI: 10.1097/mbc.0000000000001262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Determinants of thrombotic events remain uncertain in patients with atrial fibrillation treated with direct oral anticoagulants (DOACs). Our aim was to identify risk factors associated with thromboembolism in patients with at atrial fibrillation on DOACs and to construct and externally validate a predictive model that would provide a validated tool for clinical assessment of thromboembolism. In the development cohort, prediction model was built by logistic regression, the area under the curve (AUC), and Nomogram. External validation and calibration of the model using AUC and Hosmer-Lemeshow test. This national multicenter retrospective study included 3263 patients with atrial fibrillation treated with DOACs. The development cohort consisted of 2390 patients from three centers and the external validation cohort consisted of 873 patients from 13 centers. Multifactorial analysis showed that heavy drinking, hypertension, prior stroke/transient ischemic attack (TIA), cerebral infarction during hospitalization were independent risk factors for thromboembolism. The Alfalfa-TE risk score was constructed using these four factors (AUC = 0.84), and in the external validation cohort, the model showed good discriminatory power (AUC = 0.74) and good calibration (Hosmer-Lemeshow test P value of 0.649). Based on four factors, we derived and externally validated a predictive model for thromboembolism with DOACs in patients with atrial fibrillation (Alfalfa-TE risk score). The model has good predictive value and may be an effective tool to help reduce the occurrence of thromboembolism in patients with DOACs.
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Affiliation(s)
- Fuxin Ma
- School of Pharmacy, Fujian Medical University, Fuzhou
- Department of Pharmacy, Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou
| | - Jiana Chen
- Department of Pharmacy, Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou
| | - Sijie Chang
- Department of Pharmacy, Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou
| | - Nianxu Huang
- Department of Pharmacy, Taikang Tongji (Wuhan) Hospital, Wuhan
| | - Wang Zhang
- Department of Pharmacy, The First People's Hospital of Changde City, Hunan
| | - Hengfen Dai
- Department of Pharmacy, Affiliated Fuzhou First Hospital of Fujian Medical University, Fuzhou
| | - Qiaowei Zheng
- Department of Pharmacy, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi
| | - Ruijuan Li
- Department of Pharmacy, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan
| | - Xiangsheng Lin
- Department of Pharmacy, Pingtan County General Laboratory Area Hospital, Fujian
| | - Yuxin Liu
- Department of Pharmacy, Huaihe Hospital of Henan University, Kaifeng
| | - Xiaoming Du
- Department of Pharmacy, Shengjing hospital of China Medical University, Shenyang
| | - Jun Su
- Department of Pharmacy, the First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui Province
| | - Xiaohong Huang
- Zhangzhou affiliated Hospital of Fujian Medical University
| | - Xia Chen
- Department of Pharmacy, Fuling Hospital of Chongqing University, Chongqing
| | - Wei Hu
- Department of Pharmacy, Xinyang central Hospital, Xinyang Hospital Affiliated to Zhengzhou University, Xinyang
| | - Xiumei Liu
- Department of Pharmacy, People's Hospital of He'nan University of Chinese Medicine (People's Hospital of Zhengzhou), Zhengzhou
| | - Yanxia Zhang
- Department of Pharmacy, The First Affiliated Hospital of Jiamusi University, Jiamusi
| | - Ping Gu
- Department of Pharmacy, Suining Central Hospital, Suining, Sichuan, China
| | - Jinhua Zhang
- School of Pharmacy, Fujian Medical University, Fuzhou
- Department of Pharmacy, Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou
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13
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Galea R, Seiffge D, Räber L. Atrial Fibrillation and Ischemic Stroke despite Oral Anticoagulation. J Clin Med 2023; 12:5784. [PMID: 37762726 PMCID: PMC10532406 DOI: 10.3390/jcm12185784] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 08/28/2023] [Accepted: 09/03/2023] [Indexed: 09/29/2023] Open
Abstract
Patients with atrial fibrillation (AF) experiencing ischemic stroke despite oral anticoagulation (OAC), i.e., breakthrough strokes, are not uncommon, and represent an important clinical subgroup in view of the consistently high risk of stroke recurrence and mortality. The understanding of the heterogenous potential mechanism underlying OAC failure is essential in order to implement specific therapeutic measures aimed at reducing the risk of recurrent ischemic stroke. However, due to the incomplete comprehension of this phenomenon and the limited available data, secondary stroke prevention in such high-risk patients represents a clinical dilemma. There are several available strategies to prevent ischemic stroke recurrence in AF patients with breakthrough stroke in the absence of competing causes unrelated to AF, and these include continuation or change in the type of OAC, addition of antiplatelet therapy, left atrial appendage closure, or any combination of the above options. However, due to the limited available data, the latest guidelines do not provide any specific recommendations about which of the above strategies may be preferred. This review describes the incidence, the clinical impact and the potential mechanisms underlying OAC failure in AF patients. Furthermore, the evidence supporting each of the above therapeutic options for secondary stroke prevention and the potential future directions will be discussed.
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Affiliation(s)
- Roberto Galea
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland;
| | - David Seiffge
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland;
| | - Lorenz Räber
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland;
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14
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Hindsholm MF, Damgaard D, Gurol ME, Gaist D, Simonsen CZ. Management and Prognosis of Acute Stroke in Atrial Fibrillation. J Clin Med 2023; 12:5752. [PMID: 37685819 PMCID: PMC10489015 DOI: 10.3390/jcm12175752] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/25/2023] [Accepted: 09/01/2023] [Indexed: 09/10/2023] Open
Abstract
Atrial fibrillation (AF) is an important risk factor for ischemic stroke (IS). Oral anticoagulation (OAC) significantly reduces the risk of IS in AF but also increases the risk of systemic bleeding, including intracerebral hemorrhage (ICH). AF-related strokes are associated with greater disability and mortality compared to non-AF strokes. The management of patients with AF-related strokes is challenging, and it involves weighing individual risks and benefits in the acute treatment and preventive strategies of these patients. This review summarizes the current knowledge of the acute management of ischemic and hemorrhagic stroke in patients with AF, and the prognosis and potential implications for management both in the acute and long-term setting.
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Affiliation(s)
- Mette F. Hindsholm
- Department of Neurology, Aarhus University Hospital, 8200 Aarhus, Denmark; (D.D.); (C.Z.S.)
- Department of Clinical Medicine, Aarhus University, 8200 Aarhus, Denmark
| | - Dorte Damgaard
- Department of Neurology, Aarhus University Hospital, 8200 Aarhus, Denmark; (D.D.); (C.Z.S.)
| | - M. Edip Gurol
- Department of Neurology, Massachusetts General Hospital, Boston, MA 02114, USA;
- Harvard Medical School, Boston, MA 02115, USA
| | - David Gaist
- Research Unit for Neurology, Odense University Hospital, University of Southern Denmark, 5000 Odense, Denmark;
| | - Claus Z. Simonsen
- Department of Neurology, Aarhus University Hospital, 8200 Aarhus, Denmark; (D.D.); (C.Z.S.)
- Department of Clinical Medicine, Aarhus University, 8200 Aarhus, Denmark
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15
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Zietz A, Polymeris AA, Helfenstein F, Schaedelin S, Hert L, Wagner B, Seiffge DJ, Traenka C, Altersberger VL, Dittrich T, Kaufmann J, Ravanelli F, Fladt J, Fisch U, Thilemann S, De Marchis GM, Gensicke H, Bonati LH, Katan M, Fischer U, Lyrer P, Engelter ST, Peters N. The impact of competing stroke etiologies in patients with atrial fibrillation. Eur Stroke J 2023; 8:703-711. [PMID: 37401394 PMCID: PMC10472960 DOI: 10.1177/23969873231185220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 06/12/2023] [Indexed: 07/05/2023] Open
Abstract
BACKGROUND Data on the impact of competing stroke etiologies in stroke patients with atrial fibrillation (AF) are scarce. METHODS We used prospectively obtained data from an observational registry (Novel-Oral-Anticoagulants-in-Ischemic-Stroke-Patients-(NOACISP)-LONGTERM) of consecutive AF-stroke patients treated with oral anticoagulants. We compared the frequency of (i) the composite outcome of recurrent ischemic stroke (IS), intracerebral hemorrhage (ICH) or all-cause death as well as (ii) recurrent IS alone among AF-stroke patients with versus without competing stroke etiologies according to the TOAST classification. We performed cox proportional hazards regression modeling adjusted for potential confounders. Furthermore, the etiology of recurrent IS was assessed. RESULTS Among 907 patients (median age 81, 45.6% female), 184 patients (20.3%) had competing etiologies, while 723 (79.7%) had cardioembolism as the only plausible etiology. During 1587 patient-years of follow-up, patients with additional large-artery atherosclerosis had higher rates of the composite outcome (adjusted HR [95% CI] 1.64 [1.11, 2.40], p = 0.017) and recurrent IS (aHR 2.96 [1.65, 5.35 ], p < 0.001), compared to patients with cardioembolism as the only plausible etiology. Overall 71 patients had recurrent IS (7.8%) of whom 26.7% had a different etiology than the index IS with large-artery-atherosclerosis (19.7%) being the most common non-cardioembolic cause. CONCLUSION In stroke patients with AF, causes other than cardioembolism as competing etiologies were common in index or recurrent IS. Concomitant presence of large-artery-atherosclerosis seems to indicate an increased risk for recurrences suggesting that stroke preventive means might be more effective if they also address competing stroke etiologies in AF-stroke patients. CLINICAL TRIAL REGISTRATION NCT03826927.
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Affiliation(s)
- Annaelle Zietz
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
- Neurology and Neurorehabilitation, University Department of Geriatric Medicine Felix Platter, University of Basel, Switzerland
| | - Alexandros A Polymeris
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
| | | | - Sabine Schaedelin
- Department of Clinical Research, University Hospital Basel and University of Basel, Switzerland
| | - Lisa Hert
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
- Department of Intensive Care Medicine, University Hospital Basel, Switzerland
| | - Benjamin Wagner
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
| | - David J Seiffge
- Department of Neurology and Stroke Center, Inselspital, Bern, Switzerland
| | - Christopher Traenka
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
- Neurology and Neurorehabilitation, University Department of Geriatric Medicine Felix Platter, University of Basel, Switzerland
| | - Valerian L Altersberger
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
- Neurology and Neurorehabilitation, University Department of Geriatric Medicine Felix Platter, University of Basel, Switzerland
| | - Tolga Dittrich
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
- Department of Neurology, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Josefin Kaufmann
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
- Neurology and Neurorehabilitation, University Department of Geriatric Medicine Felix Platter, University of Basel, Switzerland
| | - Flavia Ravanelli
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
- Neurology and Neurorehabilitation, University Department of Geriatric Medicine Felix Platter, University of Basel, Switzerland
| | - Joachim Fladt
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Urs Fisch
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Sebastian Thilemann
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Gian Marco De Marchis
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
- Department of Neurology, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Henrik Gensicke
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
- Neurology and Neurorehabilitation, University Department of Geriatric Medicine Felix Platter, University of Basel, Switzerland
| | - Leo H Bonati
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Mira Katan
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
- Department for Neurology, University Hospital Zurich, Switzerland
| | - Urs Fischer
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Philippe Lyrer
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Stefan T Engelter
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
- Neurology and Neurorehabilitation, University Department of Geriatric Medicine Felix Platter, University of Basel, Switzerland
| | - Nils Peters
- Department of Neurology and Stroke Center, University Hospital Basel and University of Basel, Basel, Switzerland
- Neurology and Neurorehabilitation, University Department of Geriatric Medicine Felix Platter, University of Basel, Switzerland
- Stroke Center, Klinik Hirslanden, Zürich, Switzerland
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16
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The risk of stroke recurrence in patients with atrial fibrillation and reduced ejection fraction. Eur Stroke J 2023; 8:731-737. [PMID: 37249094 PMCID: PMC10472961 DOI: 10.1177/23969873231177625] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/05/2023] [Indexed: 05/31/2023] Open
Abstract
BACKGROUND Atrial fibrillation (AF) and congestive heart failure often coexist due to their shared risk factors leading to potential worse outcome, particularly cerebrovascular events. The aims of this study were to calculate the rates of ischemic and severe bleeding events in ischemic stroke patients having both AF and reduced ejection fraction (rEF) (⩽40%), compared to ischemic stroke patients with AF but without rEF. METHODS We performed a retrospective analysis that drew data from prospective studies. The primary outcome was the composite of either ischemic (stroke or systemic embolism), or hemorrhagic events (symptomatic intracranial bleeding and severe extracranial bleeding). RESULTS The cohort for this analysis comprised 3477 patients with ischemic stroke and AF, of which, 643 (18.3%) had also rEF. After a mean follow-up of 7.5 ± 9.1 months, 375 (10.8%) patients had 382 recorded outcome events, for an annual rate of 18.0%. While the number of primary outcome events in patients with rEF was 86 (13.4%), compared to 289 (10.2%) for the patients without rEF; on multivariable analysis rEF was not associated with the primary outcome (OR 1.25; 95% CI 0.84-1.88). At the end of follow-up, 321 (49.9%) patients with rEF were deceased or disabled (mRS ⩾3), compared with 1145 (40.4%) of those without rEF; on multivariable analysis, rEF was correlated with mortality or disability (OR 1.35; 95% CI 1.03-1.77). CONCLUSIONS In patients with ischemic stroke and AF, the presence of rEF was not associated with the composite outcome of ischemic or hemorrhagic events over short-term follow-up but was associated with increased mortality or disability.
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17
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Caliandro P, Cancelloni V, Marco M, Reale G, Zauli A, Agnelli G, Caso V, Becattini C, Calabresi P, Giulia Mosconi M, Giustozzi M, Tsivgoulis G, Julian Seiffge D, Engelter ST, Lyrer P, Polymeris AA, Dittrich T, Zietz A, Marco De Marchis G, Putaala J, Strbian D, Tomppo L, Michel P, Strambo D, Salerno A, Remillard S, Buehrer M, Bavaud O, Vanacker P, Zuurbier S, Yperzeele L, Loos CM, Cappellari M, Emiliani A, Zedde M, Abdul-Rahim A, Dawson J, Cronshaw R, Schirinzi E, Del Sette M, Stretz C, Kala N, Reznik M, Schomer A, Mac Grory B, Jayaraman M, McTaggart R, Yaghi S, Furie KL, Masotti L, Grifoni E, Toni D, Risitano A, Falcou A, Petraglia L, Maria Lotti E, Padroni M, Pavolucci L, Lochner P, Silvestrelli G, Ciccone A, Alberti A, Venti M, Leone De Magistris I, Kargiotis O, Rocco A, Diomedi M, Marcheselli S, Antonenko K, Rota E, Tassinari T, Saia V, Palmerini F, Aridon P, Arnao V, Monaco S, Cottone S, Baldi A, D’Amore C, Ageno W, Pegoraro S, Ntaios G, Sagris D, Giannopoulos S, Kosmidou M, Ntais E, Romoli M, Pantoni L, Rosa S, Bertora P, Chiti A, Canavero I, Emanuele Saggese C, Plocco M, Giorli E, Palaiodimou L, Bakola E, Bandini F, Gasparro A, Terruso V, Mannino M, Pezzini A, Ornello R, Sacco S, Popovic N, Scoditti U, Genovese A, Denti L, Flomin Y, Mancuso M, Ferrari E, Chiara Caselli M, Ulivi L, Giannini N, Vadikolias K, Liantinioti C, Chondrogianni M, Halvatsiotis P, Carletti M, Karagkiozi E, Athanasakis G, Makaritsis K, Lanari A, Tatlisumak T, Acciarresi M, Vannucchi V, Lorenzini G, Tassi R, Guideri F, Acampa M, Martini G, Sohn SI, Mumoli N, Tadi P, Letteri F, Maccarrone M, Poli L, Magoni M, Galati F, Tiseo C, Gourbali V, Orlandi G, Giuntini M, Corea F, Bellesini M, Girardi L, Maimone Baronello M, Karapanayiotides T, Rueckert C, Csiba L, Szabó L, Rigatelli A, Imberti D, Zabzuni D, Pieroni A, Barlinn K, Pallesen LP, Barlinn J, Doronin B, Volodina V, Deleu D, Bonetti B, Porta C, Gentile L, Eskandari A, Paciaroni M. Risk of recurrent stroke in patients with atrial fibrillation treated with oral anticoagulants alone or in combination with anti-platelet therapy. Eur Stroke J 2023; 8:722-730. [PMID: 37458099 PMCID: PMC10472945 DOI: 10.1177/23969873231183211] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/01/2023] [Indexed: 07/18/2023] Open
Abstract
INTRODUCTION Ischaemic stroke patients with atrial fibrillation (AF) are at high risk of stroke recurrence despite oral anticoagulation therapy. Patients with cardiovascular comorbidities may take both antiplatelet and oral anticoagulation therapy (OAC/AP). Our study aims to evaluate the safety and efficacy of OAC/AP therapy as secondary prevention in people with AF and ischaemic stroke. PATIENTS AND METHODS We performed a post-hoc analysis of pooled individual data from multicenter prospective cohort studies and compared outcomes in the OAC/AP cohort and patients on DOAC/VKA anticoagulation alone (OAC cohort). Primary outcome was a composite of ischaemic stroke, systemic embolism, intracranial bleeding, and major extracranial bleeding, while secondary outcomes were ischaemic and haemorrhagic events considered separately. A multivariable logistic regression analysis was performed to identify independent predictors for outcome events. To compare the risk of outcome events between the two cohorts, the relation between the survival function and the set of explanatory variables were calculated by Cox proportional hazard models and the results were reported as adjusted hazard ratios (HR). Finally another analysis was performed to compare the overall risk of outcome events in both OAC/AP and OAC cohorts after propensity score matching (PSM). RESULTS During a mean follow-up time of 7.5 ± 9.1 months (median follow-up time 3.5 months, interquartile range ±3), 2284 stroke patients were on oral anticoagulants and 215 were on combined therapy. The multivariable model demonstrated that the composite outcome is associated with age (OR: 1.03, 95% CI: 1.01-1.04 for each year increase) and concomitant antiplatelet therapy (OR: 2.2, 95% CI: 1.48-3.27), the ischaemic outcome with congestive heart failure (OR: 1.55, 95% CI: 1.02-2.36) and concomitant antiplatelet therapy (OR: 1.93, 95% CI: 1.19-3.13) and the haemorrhagic outcome with age (OR: 1.03, 95% CI: 1.01-1.06 for each year increase), alcoholism (OR: 2.15, 95% CI: 1.06-4.39) and concomitant antiplatelet therapy (OR: 2.22, 95% CI: 1.23-4.02). Cox regression demonstrated a higher rate of the composite outcome (hazard ratio of 1.93 [95% CI, 1.35-2.76]), ischaemic events (HR: 2.05 [95% CI: 1.45-2.87]) and bleeding outcomes (HR: 1.90 [95% CI, 1.06-3.40]) in OAC/AP cohort. After PSM analysis, the composite outcome remained more frequent in people treated with OAC + AP (RR: 1.70 [95% CI, 1.05-2.74]). DISCUSSION Secondary prevention with combination of oral anticoagulant and antiplatelet therapy after ischaemic stroke was associated with worse outcomes in our cohort. CONCLUSION Further research is needed to improve secondary prevention by investigating the mechanisms of recurrent ischaemic stroke in patients with atrial fibrillation.
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Li N, Li YJ, Guo XJ, Wu SH, Jiang WF, Zhang DL, Wang KW, Li L, Sun YM, Xu YJ, Yang YQ, Qiu XB. Discovery of TBX20 as a Novel Gene Underlying Atrial Fibrillation. BIOLOGY 2023; 12:1186. [PMID: 37759586 PMCID: PMC10525918 DOI: 10.3390/biology12091186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/25/2023] [Accepted: 08/28/2023] [Indexed: 09/29/2023]
Abstract
Atrial fibrillation (AF), the most prevalent type of sustained cardiac dysrhythmia globally, confers strikingly enhanced risks for cognitive dysfunction, stroke, chronic cardiac failure, and sudden cardiovascular demise. Aggregating studies underscore the crucial roles of inherited determinants in the occurrence and perpetuation of AF. However, due to conspicuous genetic heterogeneity, the inherited defects accounting for AF remain largely indefinite. Here, via whole-genome genotyping with genetic markers and a linkage assay in a family suffering from AF, a new AF-causative locus was located at human chromosome 7p14.2-p14.3, a ~4.89 cM (~4.43-Mb) interval between the markers D7S526 and D7S2250. An exome-wide sequencing assay unveiled that, at the defined locus, the mutation in the TBX20 gene, NM_001077653.2: c.695A>G; p.(His232Arg), was solely co-segregated with AF in the family. Additionally, a Sanger sequencing assay of TBX20 in another family suffering from AF uncovered a novel mutation, NM_001077653.2: c.862G>C; p.(Asp288His). Neither of the two mutations were observed in 600 unrelated control individuals. Functional investigations demonstrated that the two mutations both significantly reduced the transactivation of the target gene KCNH2 (a well-established AF-causing gene) and the ability to bind the promoter of KCNH2, while they had no effect on the nuclear distribution of TBX20. Conclusively, these findings reveal a new AF-causative locus at human chromosome 7p14.2-p14.3 and strongly indicate TBX20 as a novel AF-predisposing gene, shedding light on the mechanism underlying AF and suggesting clinical significance for the allele-specific treatment of AF patients.
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Affiliation(s)
- Ning Li
- Department of Cardiology, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China;
| | - Yan-Jie Li
- Department of Cardiology, Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; (Y.-J.L.); (S.-H.W.); (W.-F.J.)
| | - Xiao-Juan Guo
- Department of Cardiology, Shanghai Fifth People’s Hospital, Fudan University, Shanghai 200240, China; (X.-J.G.); (Y.-J.X.)
- Center for Complex Cardiac Arrhythmias of Minhang District, Shanghai Fifth People′s Hospital, Fudan University, Shanghai 200240, China
| | - Shao-Hui Wu
- Department of Cardiology, Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; (Y.-J.L.); (S.-H.W.); (W.-F.J.)
| | - Wei-Feng Jiang
- Department of Cardiology, Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; (Y.-J.L.); (S.-H.W.); (W.-F.J.)
| | - Dao-Liang Zhang
- Cardiac Arrhythmia Center, Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen 518057, China;
| | - Kun-Wei Wang
- Department of Cardiology, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China;
| | - Li Li
- Key Laboratory of Arrhythmias, Ministry of Education of China, Tongji University School of Medicine, Shanghai 200092, China;
| | - Yu-Min Sun
- Department of Cardiology, Shanghai Jing’an District Central Hospital, Fudan University, Shanghai 200040, China;
| | - Ying-Jia Xu
- Department of Cardiology, Shanghai Fifth People’s Hospital, Fudan University, Shanghai 200240, China; (X.-J.G.); (Y.-J.X.)
- Center for Complex Cardiac Arrhythmias of Minhang District, Shanghai Fifth People′s Hospital, Fudan University, Shanghai 200240, China
| | - Yi-Qing Yang
- Department of Cardiology, Shanghai Fifth People’s Hospital, Fudan University, Shanghai 200240, China; (X.-J.G.); (Y.-J.X.)
- Center for Complex Cardiac Arrhythmias of Minhang District, Shanghai Fifth People′s Hospital, Fudan University, Shanghai 200240, China
- Cardiovascular Research Laboratory, Shanghai Fifth People’s Hospital, Fudan University, Shanghai 200240, China
- Central Laboratory, Shanghai Fifth People’s Hospital, Fudan University, Shanghai 200240, China
| | - Xing-Biao Qiu
- Department of Cardiology, Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; (Y.-J.L.); (S.-H.W.); (W.-F.J.)
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Baiardi G, Cafaro A, Stella M, Caviglia MC, Poeta MG, Cangemi G, Mattioli F. Altered plasma levels of apixaban in major gastrointestinal tract surgery: a case report and review of the literature. Clin Biochem 2023; 118:110613. [PMID: 37451498 DOI: 10.1016/j.clinbiochem.2023.110613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 07/06/2023] [Accepted: 07/08/2023] [Indexed: 07/18/2023]
Abstract
Altered direct oral anticoagulant (DOAC) plasma levels can lead either to spontaneous hemorrhagic or thrombotic complications. We describe a case of suspected altered apixaban disposition in a patient with an upper gastrointestinal cancer resection treated with apixaban for non-valvular atrial fibrillation. Diagnosis of ischemic stroke for left hemiparesis was confirmed due to recent emergence of a hypodense area in the posterior capsular nucleus of ischemic reference in a context of binuclear capsular lacunar lesions. Thus, apixaban underexposure was suspected from anamnestic data and oral anticoagulation was switched to parenteral at the next scheduled dose for stroke recurrence. Before switching apixaban pharmacokinetic analysis was performed and unexpectedly showed apixaban plasma overexposure. After 3 days from the switch, the patient experienced spontaneous bleeding complications, for which the risk-benefit profile of continuing anticoagulant treatment for stroke recurrences warranted treatment discontinuation. Unexpected DOAC plasma exposure may present in special patient populations with thrombotic and bleeding complications. Though universally recognized therapeutic ranges have yet to be established for DOACs, periodic drug monitoring may aid in guiding optimization of DOAC therapy and reduce the risk of adverse events in special patient populations.
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Affiliation(s)
- Giammarco Baiardi
- Clinical Pharmacology Unit, Ente Ospedaliero Ospedali Galliera, Genoa, Italy; Pharmacology & Toxicology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy.
| | - Alessia Cafaro
- Pharmacology & Toxicology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy; Chromatography and Mass Spectrometry Section, Central Laboratory of Analysis, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Manuela Stella
- Clinical Pharmacology Unit, Ente Ospedaliero Ospedali Galliera, Genoa, Italy; Pharmacology & Toxicology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Michela Cameran Caviglia
- Clinical Pharmacology Unit, Ente Ospedaliero Ospedali Galliera, Genoa, Italy; Pharmacology & Toxicology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
| | | | - Giuliana Cangemi
- Chromatography and Mass Spectrometry Section, Central Laboratory of Analysis, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Francesca Mattioli
- Clinical Pharmacology Unit, Ente Ospedaliero Ospedali Galliera, Genoa, Italy; Pharmacology & Toxicology Unit, Department of Internal Medicine, University of Genoa, Genoa, Italy
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20
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Anic A, Bakovic D, Jurisic Z, Farkowski M, Lisica L, Breskovic T, Nielsen-Kudsk JE, Perrotta L, de Asmundis C, Boveda S, Chun J. Diagnostic and therapeutic pathways for the malignant left atrial appendage: European Heart Rhythm Association physician survey. Europace 2023; 25:euad204. [PMID: 37440757 PMCID: PMC10359107 DOI: 10.1093/europace/euad204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 05/29/2023] [Indexed: 07/15/2023] Open
Abstract
AIMS Patients with atrial fibrillation who despite taking oral anti-coagulant therapy (OAT) suffer a stroke or systemic embolism (SSE) without vascular cause or who develop left atrial appendage (LAA) thrombus (LAAT) should be considered as having malignant LAA. The optimal treatment strategy to reduce SSE risk in such patients is unknown. The aim of the study is to investigate the diagnostic and therapeutic pathways for malignant LAA practiced in European cardiac centres. METHODS AND RESULTS An 18-item online questionnaire on malignant LAA was disseminated by the European Heart Rhythm Association (EHRA) Scientific Initiatives Committee. A total of 196 physicians participated in the survey. There seems to be high confidence in transoesophageal echocardiography (TEE) imaging, considering LAAT diagnosis. Switching to another direct oral anti-coagulant (DOAC) is the preferred initial step for the treatment of malignant LAA followed by a switch to vitamin K antagonist (VKA), low-molecular-weight heparin, or continued/optimized DOAC dosage, whereas LAA closure is the last option. Left atrial appendage closure is a viable option in patients with embolic stroke despite OAT and no evidence of thrombus at TEE (empty LAA) after comprehensive diagnostic measures to exclude other sources of embolism. CONCLUSION This EHRA survey provides a snapshot of the contemporary management of patients diagnosed with malignant LAA. Currently, the majority of patients are treated on an outpatient basis with either shifting from VKA to DOAC or from one DOAC to another. Left atrial appendage closure in this population seems to be reserved for patients with higher bleeding risk or complications of malignant LAA, such as stroke.
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Affiliation(s)
- Ante Anic
- Department for Cardiovascular Diseases, University Hospital Centre Split, Soltanska 1, 21000 Split, Croatia
| | - Darija Bakovic
- Department for Cardiovascular Diseases, University Hospital Centre Split, Soltanska 1, 21000 Split, Croatia
- School of Medicine, University of Split, Split, Croatia
| | - Zrinka Jurisic
- Department for Cardiovascular Diseases, University Hospital Centre Split, Soltanska 1, 21000 Split, Croatia
- School of Medicine, University of Split, Split, Croatia
| | - Michal Farkowski
- Department of Cardiology, Central Clinical Hospital of the Ministry of Interior and Administration, Warsaw, Poland
- II Department of Heart Arrhythmia, National Institute of Cardiology, Warsaw, Poland
| | - Lucija Lisica
- Department for Cardiovascular Diseases, University Hospital Centre Split, Soltanska 1, 21000 Split, Croatia
| | - Toni Breskovic
- Department for Cardiovascular Diseases, University Hospital Centre Split, Soltanska 1, 21000 Split, Croatia
- School of Medicine, University of Split, Split, Croatia
| | | | | | - Carlo de Asmundis
- Heart Rhythm Management Centre, University Hospital (UZ) Brussels, Brussels, Belgium
| | - Serge Boveda
- Cardiology-Heart Rhythm Management Department, Clinique Pasteur, Toulouse, France
| | - Julian Chun
- CCB, Cardiology, Med. Klinik III, Markus Krankenhaus, Frankfurt, Germany
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21
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Herlekar R, Sur Roy A, Hajiev S, Induruwa I, Agarwal S, Evans NR, Khadjooi K, Markus H, O’Brien E, Warburton E, Zachariah G, McCabe JJ. The contribution of competing mechanisms in stroke despite anticoagulation in patients with atrial fibrillation. Eur Stroke J 2023; 8:541-548. [PMID: 37231697 PMCID: PMC10334183 DOI: 10.1177/23969873231168367] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 03/20/2023] [Indexed: 08/27/2023] Open
Abstract
BACKGROUND For reasons poorly understood, strokes frequently occur in patients with atrial fibrillation (AF) despite oral anticoagulation. Better data are needed to inform randomised trials (RCTs) of new strategies to prevent recurrence in these patients. We investigate the relative contribution of competing stroke mechanisms in patients with AF who have stroke despite anticoagulation (OAC+) compared with those who are anticoagulant naïve (OAC-) at the time of their event. PATIENTS AND METHODS We performed a cross-sectional study leveraging data from a prospective stroke registry (2015-2022). Eligible patients had ischemic stroke and AF. Stroke classification was performed by a single stroke-specialist blinded to OAC status using TOAST criteria. The presence of atherosclerotic plaque was determined using duplex ultrasonography, computerised tomography (CT) or magnetic resonance (MR) angiography. Imaging was reviewed by a single reader. Logistic regression was used to identify independent predictors of stroke despite anticoagulation. RESULTS Of 596 patients included, 198 (33.2%) were in the OAC+ group. A competing cause for stroke was more frequent in patients with OAC+ versus OAC- (69/198 (34.8%)) versus 77/398 (19.3%), p < 0.001). After adjustment, both small vessel occlusion (odds ratio (OR): 2.46, 95% CI: 1.20-5.06) and arterial atheroma (⩾50% stenosis) (OR: 1.78, 95% CI: 1.07-2.94) were independently associated with stroke despite anticoagulation. DISCUSSION AND CONCLUSION Patients with AF-associated stroke despite OAC are much more likely than patients who are OAC-naïve to have competing stroke mechanisms. Rigorous investigation for alternative stroke causes in stroke despite OAC has a high diagnostic yield. These data should be used to guide patient selection for future RCTs in this population.
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Affiliation(s)
- Rahul Herlekar
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Akangsha Sur Roy
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Saur Hajiev
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Isuru Induruwa
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Smriti Agarwal
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Nicholas R Evans
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Kayvan Khadjooi
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Hugh Markus
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Eoin O’Brien
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | | | - George Zachariah
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - John J McCabe
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Health Research Board Stroke Clinical Trials Network Ireland, Catherine McAuley Centre, Dublin, Ireland
- Neurovascular Unit for Applied Translational and Therapeutics Research, Catherine McAuley Centre, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
- Stroke Service, Department of Medicine for the Elderly, Mater Misericordiae University Hospital, Dublin, Ireland
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22
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De Magistris IL, Paciaroni M. Ischemic stroke while on NOAC therapy in patients with atrial fibrillation: suggested treatment strategies. Intern Emerg Med 2023; 18:963-967. [PMID: 37133729 DOI: 10.1007/s11739-023-03266-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 03/31/2023] [Indexed: 05/04/2023]
Affiliation(s)
| | - Maurizio Paciaroni
- Ilaria Leone De Magistris, Azienda Ospedaliera Di Perugia, Perugia, Italy
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23
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Benz AP, Hohnloser SH, Eikelboom JW, Carnicelli AP, Giugliano RP, Granger CB, Harrington J, Hijazi Z, Morrow DA, Patel MR, Seiffge DJ, Shoamanesh A, Wallentin L, Yi Q, Connolly SJ. Outcomes of patients with atrial fibrillation and ischemic stroke while on oral anticoagulation. Eur Heart J 2023; 44:1807-1814. [PMID: 37038327 PMCID: PMC10411934 DOI: 10.1093/eurheartj/ehad200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 02/08/2023] [Accepted: 03/20/2023] [Indexed: 04/12/2023] Open
Abstract
AIMS The prognosis of patients with atrial fibrillation (AF) and ischemic stroke while taking oral anticoagulation is poorly understood. This study aimed to characterize the outcomes of patients following a stroke event while on oral anticoagulation. METHODS AND RESULTS Individual participant data from five pivotal randomized trials of antithrombotic therapy in AF were used to assess the outcomes of patients with a post-randomization ischemic stroke while on study medication (warfarin, standard-, or lower-dose direct oral anticoagulant regimen) during trial follow-up. The primary outcome was recurrent ischemic stroke after the first post-randomization ischemic stroke. The primary analysis included 1163 patients with a first post-randomization ischemic stroke while on study medication (median age 73 years, 39.3% female, 35.4% history of stroke before trial enrollment). During a median continued follow-up of 337 days, 74 patients had a recurrent ischemic stroke [cumulative incidence at 1 year: 7.0%, 95% confidence interval (CI) 5.2%-8.7%]. The cumulative incidence of mortality at 3 months after stroke was 12.4% (95% CI 10.5%-14.4%). Consistent results for the incidence of recurrent ischemic stroke at 1 year were obtained in an analysis accounting for the competing risk of death (6.2%, 95% CI 4.8%-7.9%) and in a landmark analysis excluding the first 2 weeks after the index stroke and only including patients without permanent study drug discontinuation since then (6.8%, 95% CI 4.6%-8.9%). CONCLUSION Patients with AF and ischemic stroke while on oral anticoagulation are at increased risk of recurrent ischemic stroke and death. These patients currently have an unmet medical need.
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Affiliation(s)
- Alexander P Benz
- Population Health Research Institute, McMaster University, 237 Barton St. E., Hamilton, ON L8L 2X2, Canada
- Department of Cardiology, University Medical Center Mainz, Johannes Gutenberg University Mainz, Langenbeckstr. 1, Mainz 55131, Rhineland-Palatinate, Germany
| | | | - John W Eikelboom
- Population Health Research Institute, McMaster University, 237 Barton St. E., Hamilton, ON L8L 2X2, Canada
| | - Anthony P Carnicelli
- Duke Clinical Research Institute, Duke University, Durham, NC, United States
- Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, SC, United States
| | - Robert P Giugliano
- TIMI Study Group, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | | | | | - Ziad Hijazi
- Department of Medical Sciences, Cardiology, and Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
| | - David A Morrow
- TIMI Study Group, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Manesh R Patel
- Duke Clinical Research Institute, Duke University, Durham, NC, United States
| | - David J Seiffge
- Department of Neurology, Inselspital University Hospital and University of Bern, Bern, Switzerland
| | - Ashkan Shoamanesh
- Population Health Research Institute, McMaster University, 237 Barton St. E., Hamilton, ON L8L 2X2, Canada
| | - Lars Wallentin
- Department of Medical Sciences, Cardiology, and Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
| | - Qilong Yi
- School of Epidemiology and Public Health, University of Ottawa, ON, Canada
| | - Stuart J Connolly
- Population Health Research Institute, McMaster University, 237 Barton St. E., Hamilton, ON L8L 2X2, Canada
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Shen Z, Huang Y, Zhou Y, Jia J, Zhang X, Shen T, Li S, Wang S, Song Y, Cheng J. Association between red blood cell distribution width and ischemic stroke recurrence in patients with acute ischemic stroke: a 10-years retrospective cohort analysis. Aging (Albany NY) 2023; 15:3052-3063. [PMID: 37053005 DOI: 10.18632/aging.204657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 03/24/2023] [Indexed: 04/14/2023]
Abstract
Numerous studies have reported that a higher red blood cell distribution width (RDW) level was associated with adverse outcomes in patients with the first stroke. However, no studies have examined the association between RDW and recurrent ischemic stroke. We performed a population-based cohort data analysis from 2007 to 2017. Baseline RDW was measured in 6402 first ischemic stroke participants, who were followed for about five years on average. During 62 months of median follow-up, 205 participants (3.20%) reported a recurrence (self-reported). RDW showed a nonlinear relationship with the risk of ischemic stroke recurrence. When RDW was assessed as quartiles (quartile 1, RDW<12.4; quartile 2, 12.4 to 12.8; quartile 3,12.8 to 13.3, quartile4, RDW>13.3), compared with the reference group (quartile 1), the hazard ratios (HRs) of ischemic stroke recurrence were 1.372 (95% confidence interval [CI]=0.671-2.805, P=0.386) in quartile 2, 1.835 (95% CI=1.222-2.755, P=0.003) in quartile 3, and 1.732 (95% CI=1.114-2.561, P<0.001) in quartile 4. The trend test was significant (P<0.001). When quartiles 3 and 4 were combined, the adjusted HR of ischemic stroke recurrence was 1.439 (95% CI=1.330-1.556, P<0.001) compared with the combined quartiles 1 and 2 subgroups. This study demonstrated that elevated RDW levels were positively associated with an increased risk of recurrent ischemic stroke. RDW can provide a new perspective for initial risk assessment and identify high-risk patients early. Further research is required to confirm our results.
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Affiliation(s)
- Zhan Shen
- Department of Geratology, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
- Department of Neurology, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Ying Huang
- Department of Neurology, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
- Department of General Medicine, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Ying Zhou
- Department of Neurology, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
- Department of General Medicine, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Jingying Jia
- Department of Central Laboratory, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Xian Zhang
- Department of Geratology, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
- Department of Neurology, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Tingting Shen
- Department of Neurology, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
- Department of General Medicine, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Shengjie Li
- Shanghai Internet Hospital Engineering Technology Research Center, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Siyang Wang
- Department of Geratology, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
- Department of Neurology, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Yunxiao Song
- Department of Clinical Laboratory, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Jie Cheng
- Department of Geratology, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
- Department of Neurology, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
- Department of Urinary Surgery, Shanghai Xuhui Central Hospital, Fudan University, Shanghai, People’s Republic of China
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25
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Field TS, Sposato LA, Hill MD, Healey JS, Andrade JG, Zhou LW. Embolic Stroke of Undetermined Source: Current Perspectives on Diagnosis, Investigations, and Management. Can J Cardiol 2023; 39:172-186. [PMID: 36272633 DOI: 10.1016/j.cjca.2022.10.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 02/07/2023] Open
Abstract
In 2014, Hart et al. introduced the concept of "embolic stroke of undetermined source" (ESUS) to the clinical-research stroke community. The hypothesis underlying the development of the ESUS construct was that this potentially heterogenous group of stroke mechanisms were largely thromboembolic, and would thus benefit from anticoagulation over antiplatelet for secondary prevention. Since then, 2 large clinical trials have shown that, to date, there is not a clear uniform antithrombotic strategy for secondary prevention after ESUS as it was originally broadly defined. However, this work has yielded valuable information about the patient phenotypes that experience ESUS strokes, as well as hypothesis-generating substudies that have given rise to the next generation of secondary prevention trials aimed at more personalized approaches for different suspected mechanisms of embolic stroke. In parallel with the evolution of ESUS, several studies aimed at screening for atrial fibrillation in the secondary stroke prevention population have generated additional questions about the mechanistic relevance of atrial fibrillation detected after stroke, and how this should inform poststroke workup, and secondary prevention strategies. Herein, we provide a synthesis of the current understanding surrounding the patient phenotypes that experience ESUS strokes, and previous, ongoing, and anticipated clinical trials that will guide earlier and later secondary prevention strategies and poststroke cardiac investigations.
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Affiliation(s)
- Thalia S Field
- Division of Neurology, Vancouver Stroke Program, University of British Columbia, Vancouver, British Columbia, Canada.
| | - Luciano A Sposato
- Schulich School of Medicine and Dentistry, Robarts Research Institute, Heart and Brain Laboratory, London, Ontario, Canada
| | - Michael D Hill
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jeff S Healey
- Population Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Jason G Andrade
- Division of Cardiology, Centre for Cardiovascular Innovation, University of British Columbia, Vancouver, British Columbia, Canada
| | - Lily W Zhou
- Division of Neurology, Vancouver Stroke Program, University of British Columbia, Vancouver, British Columbia, Canada
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26
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Blum S, Conen D. Mechanisms and Clinical Manifestations of Cognitive Decline in Atrial Fibrillation Patients: Potential Implications for Preventing Dementia. Can J Cardiol 2023; 39:159-171. [PMID: 36252904 DOI: 10.1016/j.cjca.2022.10.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 02/07/2023] Open
Abstract
Atrial fibrillation (AF) patients face an approximate 1.5-fold increased risk of cognitive decline compared with the general population. Among poststroke AF patients, the risk of cognitive decline is even higher with an estimated threefold increase. This article provides a narrative review on the current evidence and highlights gaps in knowledge and areas for future research. Although earlier studies hypothesized that the association between AF and cognitive decline is mainly a consequence of previous ischemic strokes, more recent evidence also suggests such an association in AF patients without a history of clinical stroke. Because AF and cognitive decline mainly occur among elderly individuals, it is not surprising that both entities share multiple risk factors. In addition to clinically overt ischemic strokes, silent brain infarcts and other brain injury are likely mechanisms for the increased risk of cognitive decline among AF patients. Oral anticoagulation for stroke prevention in AF patients with additional stroke risk factors is one of the only proven therapies to prevent brain injury. Whether a broader use of oral anticoagulation, or more intense anticoagulation in some patients are beneficial in this context needs to be addressed in future studies. Although direct studies are lacking, it is reasonable to recommend optimal treatment of comorbidities and risk factors for the prevention of cognitive decline and dementia.
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Affiliation(s)
- Steffen Blum
- Cardiovascular Research Institute Basel, University Hospital Basel, University of Basel, Basel, Switzerland; Population Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - David Conen
- Population Health Research Institute, McMaster University, Hamilton, Ontario, Canada.
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27
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Abstract
INTRODUCTION Stroke is one of the leading causes of mortality and morbidity globally. Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia. It is set to reach epidemic proportions. AF is associated with a five-fold increase in risk of stroke. Strokes caused by AF more often are fatal or result in severe disability. Even though the incidence of stroke has been significantly reduced by oral anticoagulation, AF is thought to account for a significant proportion of cryptogenic strokes where no etiology is identified. AREAS COVERED This article reviews the literature related to AF and stroke, pathophysiological insights, diagnosis of AF in stroke patients, and its management (Graphical Abstract). EXPERT OPINION The pathophysiology of thrombogenesis that links AF and stroke is not well understood and is an area of active research to identify new therapeutic targets to prevent AF and stroke. As the nature of AF and stroke is multifaceted, an integrated care approach to managing AF and stroke is increasingly essential.
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Affiliation(s)
- Sylvia E Choi
- Liverpool Centre for Cardiovascular Science at University of Liverpool, Liverpool John Moores University and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Cardiovascular and Metabolic Medicine, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | - Dimitrios Sagris
- Liverpool Centre for Cardiovascular Science at University of Liverpool, Liverpool John Moores University and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Internal Medicine, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Andrew Hill
- Liverpool Centre for Cardiovascular Science at University of Liverpool, Liverpool John Moores University and Liverpool Heart & Chest Hospital, Liverpool, UK.,Stroke Division, Department of Medicine for Older People, Whiston Hospital, St Helens and Knowsley Teaching Hospitals NHS Trust, UK
| | - Gregory Y H Lip
- Liverpool Centre for Cardiovascular Science at University of Liverpool, Liverpool John Moores University and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Cardiovascular and Metabolic Medicine, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Azmil H Abdul-Rahim
- Liverpool Centre for Cardiovascular Science at University of Liverpool, Liverpool John Moores University and Liverpool Heart & Chest Hospital, Liverpool, UK.,Department of Cardiovascular and Metabolic Medicine, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.,Stroke Division, Department of Medicine for Older People, Whiston Hospital, St Helens and Knowsley Teaching Hospitals NHS Trust, UK
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28
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Comparison of primary and secondary stroke prevention in patients with nonvalvular atrial fibrillation: Results from the RAFFINE registry. J Stroke Cerebrovasc Dis 2022; 31:106871. [DOI: 10.1016/j.jstrokecerebrovasdis.2022.106871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 10/19/2022] [Accepted: 10/31/2022] [Indexed: 11/09/2022] Open
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29
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Uzunget SB, Sahin KE. Another possible determinant for ischemic stroke with nonvalvular atrial fibrillation other than conventional oral anticoagulant treatment: The relationship between whole blood viscosity and stroke☆. J Stroke Cerebrovasc Dis 2022; 31:106687. [PMID: 35932540 DOI: 10.1016/j.jstrokecerebrovasdis.2022.106687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 07/24/2022] [Accepted: 07/25/2022] [Indexed: 10/16/2022] Open
Abstract
OBJECTIVES Patients with nonvalvular atrial fibrillation (NVAF) still experience ischemic stroke despite recommended medications and this could be the consequence of increased whole blood viscosity (WBV). We evaluated the predictive value of WBV for stroke in patients with NVFA despite receiving oral anticoagulant (OAC) therapy. METHODS One thousand and forty-three NVAF patients on OAC medication were followed up for median 36.13 ± 18.31 months. WBV was calculated according to the validated de Simone's formula. RESULTS WBV was significantly higher in stroke group when compared to non-stroke group at both low shear rate (LSR) and high shear rate (HSR). Multiple regression analysis demonstrated an independent association between WBV and stroke when adjusted for other risk factors. CONCLUSIONS WBV appears to be a profitable predictor of ischemic stroke in patients with NVAF receiving OAC.
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Affiliation(s)
- Sezen Baglan Uzunget
- Department of Cardiology, Sincan State Hospital Ankara, Sincan, Ankara 06933, Turkey.
| | - Kader Eliz Sahin
- Department of Cardiology, Adiyaman University Education and Research Hospital, Adiyaman, Turkey
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