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Chronic Kidney Disease as an Independent Risk Factor for Thromboembolism in Patients with Atrial Fibrillation / 대한내과학회지

Gyu-Chul OH; Myung-Jin CHA; Do-Yoon KANG; Ji-Yeong KIM; Young-Jun SUNG; Jung-Han YOON; Dong-Won LEE; Min-Ho LEE; Wonseok CHOE; Eue-Keun CHOI; Seil OH.
Korean Journal of Medicine ; : 464-469, 2011.
Artículo en Ko | WPRIM | ID: wpr-169346
BACKGROUND/

AIMS:

The CHADS2 scoring system has been widely used to stratify thromboembolic risk associated with atrial fibrillation. Chronic kidney disease (CKD) is associated with increased risk of stroke in patients with atrial fibrillation (AF) but has not yet been included in risk-scoring systems. We analyzed the difference in thromboembolic risk of patients with AF and a moderate risk of stroke according to the presence of CKD.

METHODS:

Of 1,952 patients with AF, 451 with a CHADS2 score of 1 were divided into two groups according to the presence of CKD, and thromboembolic events were analyzed. Each group was further classified by the antithrombotic regimen used warfarin or aspirin.

RESULTS:

Of the 451 patients, 94 with CKD had a significantly higher risk for thromboembolic complications than the 357 patients without CKD (hazard ratio [HR], 3.630; 95% confidence interval [CI], 1.565-8.422; p = 0.003). Patients with CKD who were on aspirin had a higher risk for thromboembolic events than those on warfarin (HR, 5.203; 95% CI, 1.056-25.633, p = 0.043). However, in patients without CKD, the aspirin group did not have a higher risk of thromboembolic events than the warfarin group (HR, 0.803; 95% CI, 0.225-2.867, p = 0.735).

CONCLUSIONS:

In Korean patients with AF and a CHADS2 score of 1, CKD may be an independent thromboembolic risk factor. In patients with CKD, warfarin may be superior to aspirin for lowering thromboembolic risk.
Biblioteca responsable: WPRO