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Perit Dial Int 29(1): 64-71
2009
© 2009 International Society for Peritoneal Dialysis
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Clinical

SUBCLINICAL PERIPHERAL ARTERY DISEASE IN PATIENTS UNDERGOING PERITONEAL DIALYSIS: RISK FACTORS AND OUTCOME

Jiung-Hsiun Liua, Hsin-Hung Lina, Ya-Fei Yang, Yao-Lung Liu, Huey-Liang Kuo, I-Kuan Wang, Che-Yi Chou and Chiu-Ching Huang

Division of Nephrology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan

a These authors contributed equally to this work.

Correspondence to: C.C. Huang, Division of Nephrology, Department of Internal Medicine, China Medical University Hospital, 2 Yu-Der Road, Taichung, Taiwan. cch659{at}yahoo.com.tw

{diamondsuit} Background: Peripheral artery disease (PAD) is highly prevalent among patients in end-stage renal disease. The ankle–brachial index (ABI) is believed to be highly correlated with the subclinical PAD of lower extremities but little is known about the associated risk factors and outcome for PAD and ABI in patients on peritoneal dialysis (PD).

{diamondsuit} Methods: We performed a cohort study of 153 patients from a single center receiving stable PD for more than 3 months. These patients were screened for subclinical PAD using the ABI measurement. The ABI was measured and a ratio of <0.9 was considered abnormal. Clinical outcomes included actuarial patient and technique survival in this study.

{diamondsuit} Results: 30 patients were classified into a subclinical PAD group. The prevalence of PAD (subclinical and overt) in our PD center was 19.61% (30/153). Advanced age, preexisting diabetes, preexisting cardiovascular and/or cerebrovascular disease (CVD), lower renal Kt/V urea, lower renal creatinine clearance (WCrCl), lower serum albumin level, and higher serum triglyceride level were risk factors for PAD in our PD center. Bivariate analysis showed that ABI was positively correlated with residual renal Kt/V urea and WCrCl, but was not correlated with peritoneal Kt/V urea and WCrCl. Patient and technique survival rates were significantly lower in the low ABI group than in the normal ABI group.

{diamondsuit} Conclusions: ABI is highly correlated with advanced age, preexisting diabetes, preexisting CVD, serum albumin, serum triglyceride, and residual renal clearance in PD patients. Also, lower ABI is independently associated with a high risk of patient mortality and PD technique failure.

KEY WORDS: Ankle–brachial index; peripheral artery disease; risk factors; outcome.

Received 14 December 2007; accepted 24 April 2008.






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