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Antithrombotic therapy for atrial fibrillation and coronary artery disease in older patients
Antithrombotic therapy for atrial fibrillation and coronary artery disease in older patients AMERICAN HEART JOURNAL Hess, C. N., Broderick, S., Piccini, J. P., Alexander, K. P., Newby, L. K., Shaw, L. K., Mahaffey, K. W., Alexander, J. H., Peterson, E. D., Granger, C. B., Lopes, R. D. 2012; 164 (4): 607-615Abstract
Older patients with atrial fibrillation (AF) and coronary artery disease (CAD) face high risk of stroke and bleeding with antithrombotic therapy. Balancing safe and effective use of aspirin, clopidogrel, and warfarin in this population is important.From the Duke Databank for Cardiovascular Disease, we identified patients with AF =65 years old with angiographically confirmed CAD from 2000 to 2010. Antithrombotic use was described across age and Congestive heart failure, Hypertension, Age >75 years, Diabetes, prior Stroke/transient ischemic attack (CHADS(2)) stroke risk and Anticoagulation and Risk Factors in Atrial Fibrillation (ATRIA) bleeding scores. Death and the composite of death, myocardial infarction, and stroke by antithrombotic strategy were reported.Of 2,122 patients =65 years old with AF and CAD, 477 (22.5%) were =80 years old; 1,133 (53.4%) had acute coronary syndromes. Overall rates of aspirin, clopidogrel, and warfarin use were 83.4%, 34.6%, and 38.9%, respectively. Compared with patients 65 to 79 years old, more patients =80 years old were at high stroke risk (CHADS(2) =2, 84.7% vs 57.8%) and high bleeding risk (ATRIA 5-10, 55.8% vs 23.3%). Warfarin use in both age groups increased with higher CHADS(2) scores and decreased with higher ATRIA scores. Of patients =80 years old with CHADS(2) =2, 150 (38.2%) received warfarin. Antithrombotic strategy was not associated with improved 1-year adjusted outcomes.Among older patients with AF and CAD, overall warfarin use was low. Patients =80 years old at highest stroke risk received warfarin in similar proportions to the overall cohort. Further investigation into optimizing antithrombotic strategies in this population is warranted.
View details for DOI 10.1016/j.ahj.2012.07.004
View details for Web of Science ID 000310506000026
View details for PubMedID 23067921