• Heart and vessels · Sep 2014

    Efficacy and safety of aspirin, clopidogrel, and warfarin after coronary artery stenting in Korean patients with atrial fibrillation.

    • Soon Yong Suh, Woong Chol Kang, Pyung Chun Oh, Hanul Choi, Chan Il Moon, Kyounghoon Lee, Seung Hwan Han, Taehoon Ahn, In Suck Choi, and Eak Kyun Shin.
    • Cardiology Division, Department of Internal Medicine, Gil Medical Center, Gachon University, 1198 Guwol-dong, Namdong-gu, Incheon, 405-760, Korea.
    • Heart Vessels. 2014 Sep 1;29(5):578-83.

    AbstractThere are limited data on the optimal antithrombotic therapy for patients with atrial fibrillation (AF) who undergoing coronary stenting. We reviewed 203 patients (62.6 % men, mean age 68.3 ± 10.1 years) between 2003 and 2012, and recorded clinical and demographic characteristics of the patients. Clinical follow-up included major adverse cardiac and cerebrovascular events (MACCE) (cardiac death, myocardial infarction, target lesion revascularization, and stroke), stent thrombosis, and bleeding. The most commonly associated comorbidities were hypertension (70.4 %), diabetes mellitus (35.5 %), and congestive heart failure (26.6 %). Sixty-three percent of patients had stroke risk higher than CHADS2 score 2. At discharge, dual-antiplatelet therapy (aspirin, clopidogrel) was used in 166 patients (81.8 %; Group I), whereas 37 patients (18.2 %) were discharged with triple therapy (aspirin, clopidogrel, warfarin; Group II). The mean follow-up period was 42.0 ± 29.0 months. The mean international normalized ratio (INR) in group II was 1.83 ± 0.41. The total MACCE was 16.3 %, with stroke in 3.4 %. Compared with the group II, the incidence of MACCE (2.7 % vs 19.3 %, P = 0.012) and cardiac death (0 % vs 11.4 %, P = 0.028) were higher in the group I. Major and any bleeding, however, did not differ between the two groups. In multivariate analysis, no warfarin therapy (odds ratio 7.8, 95 % confidence interval 1.02-59.35; P = 0.048) was an independent predictor of MACCE. By Kaplan-Meier survival analysis, warfarin therapy was associated with a lower risk of MACCE (P = 0.024). In patients with AF undergoing coronary artery stenting, MACCE were reduced by warfarin therapy without increased bleeding, which might be related to tighter control with a lower INR value.

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