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Effectiveness and safety of apixaban therapy in daily-care patients with atrial fibrillation: results from the Dresden NOAC Registry

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The effectiveness and safety of apixaban for stroke prevention in atrial fibrillation (SPAF) demonstrated in ARISTOTLE needs to be confirmed in daily care. To evaluate effectiveness and safety of apixaban… Click to show full abstract

The effectiveness and safety of apixaban for stroke prevention in atrial fibrillation (SPAF) demonstrated in ARISTOTLE needs to be confirmed in daily care. To evaluate effectiveness and safety of apixaban therapy in SPAF patients in daily care, we used data from an ongoing, prospective, non-interventional registry of more than 3000 patients on novel oral anticoagulants in daily care. Between 1 December 2012 and 31 August 2015, 514 patients receiving apixaban were enrolled. During a mean follow-up of 803.5 ± 228.9 days, the combined endpoint of stroke/transient ischaemic attack/systemic embolism occurred at a rate of 2.4/100 patient-years in the intention-to-treat analysis (95% confidence interval [CI] 1.5–3.5) and at 1.8/100 patient-years (95% CI 1.0–2.8) in the on-treatment analysis (events within 3 days after last intake). On-treatment rates were numerically lower for patients selected for 5 mg apixaban (n = 404) twice daily [BID] compared with the 110 patients selected for 2.5 mg BID [1.6 (95% CI 0.8 to 2.7) vs. 2.6/100 patient-years (95% CI 0.8–6.1)]. On treatment, major bleeding occurred at a rate of 2.8/100 patient-years and significantly more often in patients receiving the 2.5 mg BID dose compared with the 5 mg BID dose (5.3 vs. 2.2/100 patient-years). Apixaban treatment discontinuation occurred in a total of 122 patients during follow-up (12.5/100 patient-years in Kaplan–Meier analysis). Our data contribute to the confirmation of effectiveness and relative safety of apixaban in daily-care patients. Furthermore, apixaban discontinuation rates were considerably lower than those reported for vitamin K antagonists.

Keywords: 100 patient; patient years; safety apixaban; daily care; effectiveness

Journal Title: Journal of Thrombosis and Thrombolysis
Year Published: 2017

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