19 February 2018
Int J Med Sci 2016; 13(9):686-695. doi:10.7150/ijms.16372
Overhydration Negatively Affects Quality of Life in Peritoneal Dialysis Patients: Evidence from a Prospective Observational Study
1. Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea
Backgound: This study evaluated whether the hydration status affected health-related quality of life (HRQOL) during 12 months in peritoneal dialysis (PD) patients.
Methods: The hydration status and the HRQOL were examined at baseline and after 12 months using a bioimpedance spectroscopy and Kidney Disease Quality of Life-Short Form, respectively in PD patients. Four hundred eighty-one patients were included and divided according to the baseline overhydration (OH) value; normohydration group (NH group, -2L≤ OH ≤+2L, n=266) and overhydration group (OH group, OH >+2L, n=215). Baseline HRQOL scores were compared between the two groups. The subjects were re-stratified into quartiles according to the OH difference (OH value at baseline - OH value at 12 months; <-1, -1 - -0.1, -0.1 - +1, and ≥+1L). The relations of OH difference with HRQOL scores at 12 months and the association of OH difference with the HRQOL score difference (HRQOL score at baseline - HRQOL score at 12 months) were assessed.
Results: The OH group showed significantly lower baseline physical and mental health scores (PCS and MCS), and kidney disease component scores (KDCS) compared with the NH group (all, P<0.01). At 12 months, the adjusted PCS, MCS, and KDCS significantly increased as the OH difference quartiles increased (P<0.001, P=0.002, P<0.001, respectively). In multivariate analysis, the OH difference was independently associated with higher PCS (β = 2.04, P< .001), MCS (β=1.02, P=0.002), and KDCS (β=1.06, P<0.001) at 12 months. The OH difference was independently associated with the PCS difference (β = -1.81, P<0.001), MCS difference (β=-0.92, P=0.01), and KDCS difference (β=-0.90, P=0.001).
Conclusion: The hydration status was associated with HRQOL and increased hydration status negatively affected HRQOL after 12 months in PD patients.
Keywords: bioimpedance, fluid overload, overhydration, peritoneal dialysis, quality of life.
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How to cite this article:
Yoon HE, Kwon YJ, Song HC, Kim JK, Song YR, Shin SJ, Kim HW, Lee CH, Lee TW, Kim YO, Kim BS, Moon KH, Chang YK, Kim SS, Bang K, Cho JT, Yun SR, Na KR, Kim YW, Han BG, Chung JH, Lee KY, Jeong JH, Hwang EA, Kim YS,