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BMC Nephrology
Published in: BMC Nephrology 1/2012

Open Access 01-12-2012 | Research article

Risk factors associated with brachial–ankle pulse wave velocity among peritoneal dialysis patients in Macao

Authors: Ding-Wei Kuang, Chiu-Leong Li, Un-I Kuok, Kin Cheung, Weng-In Lio, Jing Xin

Published in: BMC Nephrology | Issue 1/2012

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Abstract

Background

Cardiovascular disease is the leading cause of mortality among peritoneal dialysis (PD) patients in Macao. Increased arterial stiffness determined by pulse wave velocity (PWV) has been established as an independent predictor of cardiovascular mortality in end-stage renal disease patients. The present study aims to investigate the relationship between arterial stiffness and its associated risk factors in chronic PD patients.

Methods

A total of 96 chronic PD patients (48 males/48 females) were included in the cross-sectional study. Arterial stiffness was assessed by brachial-ankle PWV (baPWV). Patients were divided into two subgroups according to mean baPWV value. On enrollment, clinical characteristics and biochemical parameters were collected.

Results

Compared with low baPWV group patients, high baPWV group patients were significant older (p<0.001) and more likely to have a high proportion of female gender (p=0.004) as well as previous CVD history (p=0.008). Serum albumin, pre-albumin levels and residual renal creatinine clearance (CCr) were significantly lower but the serum ferritin level was significantly higher in high baPWV group patients than in low baPWV group patients (all p<0.01). BaPWV was positively associated with age (r=0.534, p<0.001), Charlson comorbidity index (r=0.350, p<0.001) and serum ferritin level (r=0.340, p=0.001). Meanwhile, baPWV negatively correlated with serum albumin (r=−0.479, p<0.001), pre-albumin levels (r=−0.320, p=0.003) and residual renal CCr (r=−0.177, p=0.048). Age-adjusted partial correlation test found a significant correlation between baPWV and CRP (r=0.462, p<0.001). Multivariate regression analysis showed that baPWV was independently associated with age (p<0.001), serum albumin level (p=0.015), CRP (p=0.019) and residual renal CCr (p=0.045).

Conclusion

Arterial stiffness, assessed by baPWV, had an independent correlation with age, serum albumin level, CRP level and residual renal CCr among PD patients in Macao.
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Metadata
Title
Risk factors associated with brachial–ankle pulse wave velocity among peritoneal dialysis patients in Macao
Authors
Ding-Wei Kuang
Chiu-Leong Li
Un-I Kuok
Kin Cheung
Weng-In Lio
Jing Xin
Publication date
01-12-2012
Publisher
BioMed Central
Published in
BMC Nephrology / Issue 1/2012
Electronic ISSN: 1471-2369
DOI
https://doi.org/10.1186/1471-2369-13-143

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