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Association of warfarin with congestive heart failure and peripheral artery occlusive disease in hemodialysis patients with atrial fibrillation.
BACKGROUND: The effect of warfarin on the risk of cardiovascular (CV) disease is unknown among chronic hemodialysis patients with atrial fibrillation (HD-AF).
METHODS: Population-based propensity score and prescription time-distribution matched cohort study including 6719 HD-AF patients with CHA 2 DS 2 -VASc score ≥ 2 were divided into warfarin users and nonusers and followed-up for CV events and death.
RESULTS: Warfarin treatment in HD-AF patients with AF preceding HD was associated with higher risks of developing congestive heart failure [hazard ratio (HR)=1.82, 95% confidence interval (CI)=1.29-2.58, p<0.01], peripheral artery occlusive disease (HR=3.42, 95% CI=1.86-6.31, p<0.01), and aortic valve stenosis (HR=3.20, 95% CI=1.02-9.98, p<0.05). Warfarin users were not associated with risks of ischemic or hemorrhagic stroke and all-cause mortality as compared to nonusers.
CONCLUSION: Warfarin may be associated with vascular calcification, increasing the risks of congestive heart failure and peripheral artery occlusive disease among HD-AF patients.
METHODS: Population-based propensity score and prescription time-distribution matched cohort study including 6719 HD-AF patients with CHA 2 DS 2 -VASc score ≥ 2 were divided into warfarin users and nonusers and followed-up for CV events and death.
RESULTS: Warfarin treatment in HD-AF patients with AF preceding HD was associated with higher risks of developing congestive heart failure [hazard ratio (HR)=1.82, 95% confidence interval (CI)=1.29-2.58, p<0.01], peripheral artery occlusive disease (HR=3.42, 95% CI=1.86-6.31, p<0.01), and aortic valve stenosis (HR=3.20, 95% CI=1.02-9.98, p<0.05). Warfarin users were not associated with risks of ischemic or hemorrhagic stroke and all-cause mortality as compared to nonusers.
CONCLUSION: Warfarin may be associated with vascular calcification, increasing the risks of congestive heart failure and peripheral artery occlusive disease among HD-AF patients.
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