Abstract
The objective of this study was to evaluate the safety and efficacy of apixaban 5 mg twice daily vs 2.5 mg twice daily for nonvalvular atrial fibrillation or venous thromboembolism in patients with chronic kidney disease stage 4 and 5, including those on hemodialysis. Data were collected retrospectively on patients with advanced chronic kidney disease and nonvalvular atrial fibrillation and/or venous thromboembolism who received apixaban while hospitalized at our institution between January 2013 and August 2018. The 5 mg twice daily group included 22 patients, and the 2.5 mg twice daily group included 73 patients. There was no difference between groups in major bleeding events (9.1% vs. 12.3%, P = 1.00), any bleeding event (45.4% vs. 67.1%, P = 0.08), ischemic stroke (0% vs. 2.7%, P = 1.00), or venous thromboembolism (4.5% vs. 0%, P = 0.23). Subgroup analyses of patients with a serum creatinine >2.5 mg/dL or creatinine clearance <25 mL/min and patients on hemodialysis produced similar results. Until larger trials are conducted, clinicians should make patient-specific decisions about the optimal dose of apixaban in patients with severe renal impairment.
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