PMID- 29688442 OWN - NLM STAT- MEDLINE DCOM- 20191023 LR - 20191219 IS - 1460-2385 (Electronic) IS - 0931-0509 (Print) IS - 0931-0509 (Linking) VI - 33 IP - 10 DP - 2018 Oct 1 TI - Impact of residual kidney function on hemodialysis adequacy and patient survival. PG - 1823-1831 LID - 10.1093/ndt/gfy060 [doi] AB - BACKGROUND: Both dialysis dose and residual kidney function (RKF) contribute to solute clearance and are associated with outcomes in hemodialysis patients. We hypothesized that the association between dialysis dose and mortality is attenuated with greater RKF. METHODS: Among 32 251 incident hemodialysis patients in a large US dialysis organization (2007-11), we examined the interaction between single-pool Kt/V (spKt/V) and renal urea clearance (rCLurea) levels in survival analyses using multivariable Cox proportional hazards regression model. RESULTS: The median rCLurea and mean baseline spKt/V were 3.06 [interquartile range (IQR) 1.74-4.85] mL/min/1.73 m2 and 1.32 +/- 0.28, respectively. A total of 7444 (23%) patients died during the median follow-up of 1.2 years (IQR 0.5-2.2 years) with an incidence of 15.4 deaths per 100 patient-years. The Cox model with adjustment for case-mix and laboratory variables showed that rCLurea modified the association between spKt/V and mortality (Pinteraction = 0.03); lower spKt/V was associated with higher mortality among patients with low rCLurea (i.e. <3 mL/min/1.73 m2) but not among those with higher rCLurea. The adjusted mortality hazard ratios (aHRs) and 95% confidence intervals of the low (<1.2) versus high (>/=1.2) spKt/V were 1.40 (1.12-1.74), 1.21 (1.10-1.33), 1.06 (0.98-1.14), and 1.00 (0.93-1.08) for patients with rCLurea of 0.0, 1.0, 3.0 and 6.0 mL/min/1.73 m2, respectively. CONCLUSIONS: Incident hemodialysis patients with substantial RKF do not exhibit the expected better survival at higher hemodialysis doses. RKF levels should be taken into account when deciding on the dose of dialysis treatment among incident hemodialysis patients. FAU - Wang, Mengjing AU - Wang M AD - Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, Department of Medicine, University of California Irvine Medical Center, Orange, CA, USA. AD - Division of Nephrology, Department of Medicine, Huashan Hospital, Fudan University, Shanghai, China. FAU - Obi, Yoshitsugu AU - Obi Y AD - Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, Department of Medicine, University of California Irvine Medical Center, Orange, CA, USA. FAU - Streja, Elani AU - Streja E AD - Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, Department of Medicine, University of California Irvine Medical Center, Orange, CA, USA. AD - Nephrology Section, Tibor Rubin Veterans Affairs Medical Center, Long Beach, CA, USA. FAU - Rhee, Connie M AU - Rhee CM AD - Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, Department of Medicine, University of California Irvine Medical Center, Orange, CA, USA. AD - Nephrology Section, Tibor Rubin Veterans Affairs Medical Center, Long Beach, CA, USA. FAU - Chen, Jing AU - Chen J AD - Division of Nephrology, Department of Medicine, Huashan Hospital, Fudan University, Shanghai, China. FAU - Hao, Chuanming AU - Hao C AD - Division of Nephrology, Department of Medicine, Huashan Hospital, Fudan University, Shanghai, China. FAU - Kovesdy, Csaba P AU - Kovesdy CP AD - Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA. AD - Nephrology Section, Memphis VA Medical Center, Memphis, TN, USA. FAU - Kalantar-Zadeh, Kamyar AU - Kalantar-Zadeh K AD - Harold Simmons Center for Kidney Disease Research and Epidemiology, Division of Nephrology and Hypertension, Department of Medicine, University of California Irvine Medical Center, Orange, CA, USA. AD - Nephrology Section, Tibor Rubin Veterans Affairs Medical Center, Long Beach, CA, USA. AD - Fielding School of Public Health at UCLA, Los Angeles, CA, USA. LA - eng GR - K23 DK102903/DK/NIDDK NIH HHS/United States GR - K24 DK091419/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - England TA - Nephrol Dial Transplant JT - Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association JID - 8706402 SB - IM MH - Female MH - Humans MH - Kidney/*physiopathology MH - Kidney Failure, Chronic/*mortality/*physiopathology/therapy MH - Kidney Function Tests MH - Male MH - Middle Aged MH - Prognosis MH - Renal Dialysis/*mortality MH - Survival Rate PMC - PMC6888034 EDAT- 2018/04/25 06:00 MHDA- 2019/10/24 06:00 PMCR- 2019/04/23 CRDT- 2018/04/25 06:00 PHST- 2017/10/16 00:00 [received] PHST- 2018/02/21 00:00 [accepted] PHST- 2018/04/25 06:00 [pubmed] PHST- 2019/10/24 06:00 [medline] PHST- 2018/04/25 06:00 [entrez] PHST- 2019/04/23 00:00 [pmc-release] AID - 4975843 [pii] AID - gfy060 [pii] AID - 10.1093/ndt/gfy060 [doi] PST - ppublish SO - Nephrol Dial Transplant. 2018 Oct 1;33(10):1823-1831. doi: 10.1093/ndt/gfy060.