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  • Title: Clinical Outcomes and History of Fall in Patients with Atrial Fibrillation Treated with Oral Anticoagulation: Insights From the ARISTOTLE Trial.
    Author: Rao MP, Vinereanu D, Wojdyla DM, Alexander JH, Atar D, Hylek EM, Hanna M, Wallentin L, Lopes RD, Gersh BJ, Granger CB, Apixaban for Reduction in Stroke Other Thromboembolic Events in Atrial Fibrillation (ARISTOTLE) Investigators.
    Journal: Am J Med; 2018 Mar; 131(3):269-275.e2. PubMed ID: 29122636.
    Abstract:
    PURPOSE: We assessed outcomes among anticoagulated patients with atrial fibrillation and a history of falling, and whether the benefits of apixaban vs warfarin are consistent in this population. METHODS: Of the 18,201 patients in the Apixaban for Reduction in Stroke and Other Thromboembolic Events in Atrial Fibrillation (ARISTOTLE) study, 16,491 had information about history of falling-753 with history of falling and 15,738 without history of falling. The primary efficacy outcome was stroke or systemic embolism; the primary safety outcome was major bleeding. RESULTS: When compared with patients without a history of falling, patients with a history of falling were older, more likely to be female and to have dementia, cerebrovascular disease, depression, diabetes, heart failure, osteoporosis, fractures, and higher CHA2DS2-VASc (Congestive heart failure, Hypertension, Age ≥75 years, Diabetes mellitus, prior Stroke or TIA or thromboembolism, Vascular disease, Age 65-74 years, Sex category female) and HAS-BLED (Hypertension, Abnormal renal and liver function, Stroke, Bleeding, Labile international normalized ratio, Elderly, Drugs or alcohol) scores. Patients with a history of falling had higher rates of major bleeding (adjusted hazard ratio [HR] 1.39; 95% confidence interval [CI], 1.05-1.84; P = .020), including intracranial bleeding (adjusted HR 1.87; 95% CI, 1.02-3.43; P = .044) and death (adjusted HR 1.70; 95% CI, 1.36-2.14; P < .0001), but similar rates of stroke or systemic embolism and hemorrhagic stroke. There was no evidence of a differential effect of apixaban compared with warfarin on any outcome, regardless of history of falling. Among those with a history of falling, subdural bleeding occurred in 5 of 367 patients treated with warfarin and 0 of 386 treated with apixaban. CONCLUSIONS: Patients with atrial fibrillation and a history of falling receiving anticoagulation have a higher risk of major bleeding, including intracranial, and death. The efficacy and safety of apixaban compared with warfarin were consistent, irrespective of history of falling.
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