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Low Serum Bicarbonate Predicts Residual Renal Function Loss in Peritoneal Dialysis Patients

Authors
 Tae Ik Chang  ;  Ea Wha Kang  ;  Hyung Woo Kim  ;  Geun Woo Ryu  ;  Cheol Ho Park  ;  Jung Tak Park  ;  Tae-Hyun Yoo  ;  Sug Kyun Shin  ;  Shin-Wook Kang  ;  Kyu Hun Choi  ;  Dae Suk Han  ;  Seung Hyeok Han 
Citation
 Medicine, Vol.94(31) : 1276-1276, 2015 
Journal Title
 Medicine 
ISSN
 0025-7974 
Issue Date
2015
Abstract
Low residual renal function (RRF) and serum bicarbonate are associated with adverse outcomes in peritoneal dialysis (PD) patients. However, a relationship between the 2 has not yet been determined in these patients. Therefore, this study aimed to investigate whether low serum bicarbonate has a deteriorating effect on RRF in PD patients.This prospective observational study included a total of 405 incident patients who started PD between January 2000 and December 2005. We determined risk factors for complete loss of RRF using competing risk methods and evaluated the effects of time-averaged serum bicarbonate (TA-Bic) on the decline of RRF over the first 3 years of dialysis treatment using generalized linear mixed models.During the first 3 years of dialysis, 95 (23.5%) patients became anuric. The mean time until patients became anuric was 20.8 ± 9.0 months. After adjusting for multiple potentially confounding covariates, an increase in TA-Bic level was associated with a significantly decreased risk of loss of RRF (hazard ratio per 1 mEq/L increase, 0.84; 0.75-0.93; P = 0.002), and in comparison to TA-Bic ≥ 24 mEq/L, TA-Bic < 24 mEq/L conferred a 2.62-fold higher risk of becoming anuric. Furthermore, the rate of RRF decline estimated by generalized linear mixed models was significantly greater in patients with TA-Bic < 24 mEq/L compared with those with TA-Bic ≥ 24 mEq/L (-0.16 vs -0.11 mL/min/mo/1.73 m, P < 0.001).In this study, a clear association was found between low serum bicarbonate and loss of RRF in PD patients. Nevertheless, whether correction of metabolic acidosis for this indication provides additional protection for preserving RRF in these patients is unknown. Future interventional studies should more appropriately address this question.
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/140828
DOI
10.1097/MD.0000000000001276
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실)
Yonsei Authors
강신욱(Kang, Shin Wook) ; 강이화(Kang, Ea Wha) ; 김형우(Kim, Hyung Woo) ; 류근우(Ryu, Geun Woo) ; 박정탁(Park, Jung Tak) ; 박철호(Park, Cheol Ho) ; 신석균(Shin, Sug Kyun) ; 유태현(Yoo, Tae Hyun) ; 장태익(Chang, Tae Ik) ; 최규헌(Choi, Kyu Hun) ; 한대석(Han, Dae Suk) ; 한승혁(Han, Seung Hyeok)
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