One-Year Outcomes in Anticoagulated Atrial Fibrillation Patients Undergoing Percutaneous Coronary Intervention: Insights From the Greek Antiplatelet Atrial Fibrillation Registry.

Abstract: GReek-AntiPlatElet Atrial Fibrillation registry is a multicenter, observational, noninterventional study of atrial fibrillation patients undergoing percutaneous coronary intervention. Primary endpoint included clinically significant bleeding rate at 12 months between different antithrombotic regimens prescribed at discharge; secondary endpoints included major adverse cardiovascular events and net adverse clinical events. A total of 647 patients were analyzed. Most (92.9%) were discharged on novel oral anticoagulants with only 7.1% receiving the vitamin K antagonist. A little over half of patients (50.4%) received triple antithrombotic therapy (TAT)-mostly (62.9%) for ≤1 month-whereas the rest (49.6%) received dual antithrombotic therapy (DAT). Clinically significant bleeding risk was similar between TAT and DAT [Hazard ratio (HR) = 1.08; 95% confidence interval (CI), 0.66-1.78], although among TAT-receiving patients, the risk was lower in those receiving TAT for ≤1 month (HR = 0.50; 95% CI, 0.25-0.99). Anticoagulant choice (novel oral anticoagulant vs. vitamin K antagonist) did not significantly affect bleeding rates ( P = 0.258). Age, heart failure, leukemia/myelodysplasia, and acute coronary syndrome were associated with increased bleeding rates. Risk of major adverse cardiovascular events and net adverse clinical events was similar between ΤAT and DAT (HR = 1.73; 95% CI, 0.95-3.18, P = 0.075 and HR = 1.39; 95% CI, 0.93-2.08, P = 0.106, respectively). In conclusion, clinically significant bleeding and ischemic rates were similar between DAT and TAT, although TAT >1 month was associated with higher bleeding risk.
Competing Interests: D. Alexopoulos has received lecturing honoraria/advisory board fees from Astrazeneca, Bayer, Boehringer Ingelheim, Pfizer, Medtronic, Biotronik, and Chiesi Hellas. I. Zarifis has received lecturing honoraria from Boehringer Ingelheim. L. Poulimenos has received research grants and honoraria from Astra Zeneca, Bayer, Boehringer-Ingelheim, ELPEN, Menarini, MSD, Novartis, Pfizer, Servier outside the submitted work. E. Skalidis has received lecturing honoraria/advisory board fees from Astrazeneca, Bayer, Boehringer Ingelheim, Medtronic. V. Voudris has received lecturing honoraria/advisory board fees from Bayer and Medtronic. Other authors report no relationships that could be construed as a conflict of interest.
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