Association of peripheral artery disease and long-term mortality in hemodialysis patients

作者：Otsubo Shigeru^*; Kitamura Mariko; Wakaume Takako; Yajima Aiji; Ishihara Miwa; Takasaki Masayo; Ueda Syuitsu; Sugimoto Hisayuki; Otsubo Kimiko; Kimata Naoki; Akiba Takashi; Nitta Kosaku

来源：International Urology and Nephrology, 2012, 44(2): 569-573.

DOI：10.1007/s11255-010-9883-8

• Ankle-brachial index
• Chronic kidney disease
• Long-term outcome
• Peripheral artery disease

Background Peripheral artery disease (PAD) is a common complication in hemodialysis patients. The ankle-brachial blood pressure index (ABI) has been widely used to screen for subclinical PAD. In the present study, we investigated the association between ABI and long-term (up to 8.8 years) mortality among hemodialysis patients. %26lt;br%26gt;Methods A total of 86 consecutive patients receiving maintenance hemodialysis who underwent an ABI examination between 2001 and 2003 were retrospectively enrolled in this study. Patients with an ABI of less than 0.9 were considered as having PAD; those with an ABI of more than 0.9 in both legs were considered as being free from PAD. We examined the relationship between mortality and several risk factors. %26lt;br%26gt;Results During the follow-up period, 43 deaths were recorded. In the univariate regression analysis, the mortality hazard ratio (HR) of patients with PAD was 1.67 (95% confidence interval [CI], 1.18-2.28). Other predictive variables for mortality included male gender, age, and diabetes mellitus (P = 0.006, P = 0.024, and P = 0.023, respectively). A multivariate Cox analysis identified PAD and male gender as independent predictors of mortality (P = 0.033 and P = 0.028, respectively). The impact of age and diabetes mellitus on mortality was no longer significant in the multivariate analysis. %26lt;br%26gt;Conclusion After a relatively long-term observation period, a multivariate analysis indicated that PAD acted independently of other risk factors, including advanced age and the presence of diabetes mellitus. ABI measurements can be used to identify high-risk hemodialysis patients requiring intensive follow-up care.

• 出版日期2012-4