Apixaban versus aspirin for stroke prevention in people with subclinical atrial fibrillation and a history of stroke or transient ischaemic attack: subgroup analysis of the ARTESiA randomised controlled trial

被引:11
作者
Shoamanesh, Ashkan [1 ]
Field, Thalia S. [2 ]
Coutts, Shelagh B. [3 ,4 ]
Sharma, Mukul [1 ]
Gladstone, David [5 ]
Hart, Robert G. [1 ]
Boriani, Giuseppe [6 ]
Wright, David J. [7 ]
Sticherling, Christian [8 ]
Birnie, David H. [9 ]
Gold, Michael R. [10 ]
Erath, Julia W. [11 ]
Kutyifa, Valentina [12 ]
Mian, Rajibul [1 ]
Benz, Alexander P. [1 ,13 ]
Granger, Christopher B. [14 ]
Mcintyre, William F. [1 ]
Connolly, Stuart J. [1 ]
Nielsen, Jens Cosedis [15 ,16 ]
Alings, Marco [17 ]
Rivard, Lena [18 ]
Lopes, Renato [14 ]
Healey, Jeff S. [1 ]
机构
[1] McMaster Univ, Dept Med, Populat Hlth Res Inst, Hamilton, ON, Canada
[2] Univ British Columbia, Vancouver Stroke Programme, Div Neurol, Vancouver, BC, Canada
[3] Univ Calgary, Dept Clin Neurosci, Calgary, AB, Canada
[4] Univ Calgary, Dept Radiol & Community Hlth Sci, Calgary, AB, Canada
[5] Univ Toronto, Dept Med, Toronto, ON, Canada
[6] Italy Univ Modena & Reggio Emilia, Policlin Modena, Dept Biomed Metab & Neural Sci, Cardiol Div, Modena, Italy
[7] Liverpool Heart & Chest Hosp, Liverpool, England
[8] Univ Basel, Univ Hosp Basel, Basel, Switzerland
[9] Univ Ottawa, Univ Ottawa Heart Inst, Ottawa, ON, Canada
[10] Med Univ South Carolina, Charleston, SC USA
[11] Goethe Univ, Univ Hosp Dept Cardiol, Frankfurt, Germany
[12] Univ Rochester, Rochester, NY USA
[13] Johannes Gutenberg Univ Mainz, Univ Med Ctr Mainz, Dept Cardiol, Mainz, Germany
[14] Duke Univ, Med Ctr, Durham, NC USA
[15] Aarhus Univ, Aarhus Univ Hosp, Dept Cardiol, Aarhus, Denmark
[16] Aarhus Univ, Dept Clin Med, Aarhus, Denmark
[17] Amphia Ziekenhuis Breda & WCN, Utrecht, Netherlands
[18] Univ Montreal, Montreal Heart Inst, Montreal, PQ, Canada
基金
加拿大健康研究院;
关键词
WARFARIN; DABIGATRAN;
D O I
10.1016/S1474-4422(24)00475-7
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Background People with subclinical atrial fibrillation are at increased risk of stroke, albeit to a lesser extent than those with clinical atrial fibrillation, leading to an ongoing debate regarding the benefit of anticoagulation in these individuals. In the ARTESiA trial, the direct-acting oral anticoagulant apixaban reduced stroke or systemic embolism compared with aspirin in people with subclinical atrial fibrillation, but the risk of major bleeding was increased with apixaban. In a prespecified subgroup analysis of ARTESiA, we tested the hypothesis that people with subclinical atrial fibrillation and a history of stroke or transient ischaemic attack, who are known to have an increased risk of recurrent stroke, would show a greater benefit from oral anticoagulation for secondary stroke prevention compared with those without a history of stroke or transient ischaemic attack. Methods ARTESiA is a double-blind, double-dummy, randomised controlled trial conducted at 247 sites in 16 countries across Europe and North America. Adults aged 55 years or older with device-detected subclinical atrial fibrillation lasting from 6 min to 24 h and a CHA2DS2-VASc score of 3 or higher were randomly assigned using an interactive web-based system to oral apixaban 5 mg twice per day or oral aspirin 81 mg once per day. The primary efficacy outcome was stroke or systemic embolism, and the primary safety outcome was major bleeding, assessed as absolute risk differences. Analyses were by intention to treat. ARTESiA is registered with ClinicalTrials.gov (NCT01938248) and is completed; this report presents a prespecified subgroup analysis in people with a history of stroke or transient ischaemic attack. Findings Between May 7, 2015, and July 30, 2021, 4012 people with subclinical atrial fibrillation were randomly allocated either apixaban (n=2015) or aspirin (n=1997). A history of stroke or transient ischaemic attack was present in 346 (8<middle dot>6%) participants (172 assigned to apixaban and 174 to aspirin), among whom the annual rate of stroke or systemic embolism was 1<middle dot>20% (n=7; 95% CI 0<middle dot>48 to 2<middle dot>48) with apixaban versus 3<middle dot>14% (n=18; 1<middle dot>86 to 4<middle dot>96) with aspirin; (hazard ratio [HR] 0<middle dot>40, 95% CI 0<middle dot>17 to 0<middle dot>95). In participants without a history of stroke or transient ischaemic attack (n=3666; 1843 assigned to apixaban and 1823 to aspirin), the annual rate of stroke or systemic embolism was 0<middle dot>74% (n=48; 95% CI 0<middle dot>55 to 0<middle dot>98) with apixaban versus 1<middle dot>07% (n=68; 95% CI 0<middle dot>83 to 1<middle dot>36) with aspirin (HR 0<middle dot>69, 95% CI 0<middle dot>48 to 1<middle dot>00). The absolute risk difference in incidence of stroke or systemic embolism at 3<middle dot>5 years of follow-up was 7% (95% CI 2 to 12) in participants with versus 1% (0 to 3) in participants without a history of stroke or transient ischaemic attack. The annual rate of major bleeding in participants with a history of stroke or transient ischaemic attack was 2<middle dot>26% with apixaban (n=13; 95% CI 1<middle dot>21 to 3<middle dot>87) versus 1<middle dot>16% with aspirin (n=7; 0<middle dot>47 to 2<middle dot>39; HR 1<middle dot>94, 95% CI 0<middle dot>77 to 4<middle dot>87). The absolute risk difference in major bleeding events at 3<middle dot>5 years was 3% (-1 to 8) in individuals with a versus 1% (-1 to 2) in those without a history of stroke or transient ischaemic attack. Interpretation Treatment with the direct-acting oral anticoagulant apixaban in people with subclinical atrial fibrillation and a history of stroke or transient ischaemic attack led to a 7% absolute risk reduction in stroke or systemic embolism over 3<middle dot>5 years, compared with a 1% absolute risk reduction for individuals without a previous history of stroke or transient ischaemic attack. The corresponding absolute increase in major bleeding was 3% and 1%, respectively. Apixaban could be considered for secondary stroke prevention in people with subclinical atrial fibrillation and a history of stroke or transient ischaemic attack.
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收藏
页码:140 / 151
页数:12
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