European Heart Journal Advance Access originally published online on December 8, 2006
European Heart Journal 2007 28(8):996-1003; doi:10.1093/eurheartj/ehl364
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Antithrombotic therapy in elderly patients with atrial fibrillation: effects and bleeding complications: a stratified analysis of the NASPEAF randomized trial
1 Section of Cardiology, Instituto Cardiovascular, Hospital Universitario San Carlos, Madrid, Spain
2 Anticoagulation Unit, Hospital Basurto, Bilbao, Spain
3 Department of Cardiology, Hospital Galdakao, Bilbao, Spain
4 Department of Cardiology, Hospital de Navarra, Pamplona, Spain
5 Department of Cardiology, Hospital Dr. Peset, Valencia, Spain
6 Department of Cardiology, Hospital La Fe, Valencia, Spain
7 Section of Cardiology, Clínica Universitaria, Pamplona, Spain
8 Anticoagulation Unit, Hospital San Carlos, Madrid, Spain
9 Anticoagulation Unit, Hospital San Carlos, Madrid, Spain
10 Anticoagulation Unit, Centro Medico, Avenida Portugal, Madrid, Spain
11 Department of Medicine, Hospital San Agustín, Avilés, Spain
12 Instituto Cardiovascular, Hospital San Carlos, Madrid, Spain
13 Epidemiological and Research Unit, Hospital San Carlos, Madrid, Spain
Received 28 June 2006; revised 9 October 2006; accepted 19 October 2006; online publish-ahead-of-print 8 December 2006.
* Corresponding author. Tel: +34 91 3303149; fax: +34 91 3303142. E-mail address: fperezg.hcsc{at}salud.madrid.org
See page 926 for the editorial comment on this article (doi:10.1093/eurheartj/ehm077)
Aims: Atrial fibrillation patients with prior embolism have a high risk of vascular events in spite of anticoagulant therapy and elderly patients carry an additional risk. We analysed and compared vascular events-rate between older and younger than 75 years atrial fibrillation patients randomized to anticoagulant-alone or combined antiplatelet plus moderate-level anticoagulant therapy.
Methods and results: A total of 967 patients stratified by age and the history of prior embolism were randomized to therapeutic doses of anticoagulant-alone or combined antithrombotic therapy. Primary events were fatal and non-fatal ischaemic or haemorrhagic stroke/transient ischaemic attack, systemic embolism and myocardial infarction, sudden death and death from bleeding. The elderly, compared with the younger patients, had higher event-rate [hazard ratio 2.31 (95% confidence interval 1.373.90), P < 0.003]. The elderly suffered higher severe bleeding event-rate during anticoagulant therapy. The combined, compared with the anticoagulant therapy, reduced the vascular events-rate in the elderly (P = 0.012) and caused less intracranial haemorrhages and less bleeding mortality, although more non-fatal gastric bleeding.
Conclusion: The elderly with AF had a higher event-rate than the younger patients. A higher severe bleeding event-rate was also registered in elderly patients receiving anticoagulant therapy. Combined, compared with anticoagulant therapy, significantly reduced vascular events and bleeding mortality in elderly patients.
Key Words: Atrial fibrillation Stroke Haemorrhages Elderly Anticoagulation Antiplatelets
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EHJ 2007 28: 926-928.[Extract] [Full Text]