1. Abrupt Decline in Kidney Function Before Initiating Hemodialysis and All-Cause Mortality: The Chronic Renal Insufficiency Cohort (CRIC) Study
- Author
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Hsu, Raymond K, Chai, Boyang, Roy, Jason A, Anderson, Amanda H, Bansal, Nisha, Feldman, Harold I, Go, Alan S, He, Jiang, Horwitz, Edward J, Kusek, John W, Lash, James P, Ojo, Akinlolu, Sondheimer, James H, Townsend, Raymond R, Zhan, Min, Hsu, Chi-yuan, and Investigators, CRIC Study
- Subjects
Biomedical and Clinical Sciences ,Clinical Sciences ,Clinical Research ,Bioengineering ,Kidney Disease ,Assistive Technology ,Renal and urogenital ,Good Health and Well Being ,Cause of Death ,Cohort Studies ,Disease Progression ,Female ,Humans ,Kidney Failure ,Chronic ,Male ,Middle Aged ,Renal Dialysis ,Renal Insufficiency ,Chronic ,Time Factors ,Kidney function ,disease trajectory ,estimated glomerular filtration rate ,eGFR decline ,hemodialysis ,mortality ,end-stage renal disease ,transition to ESRD ,renal replacement therapy (RRT) initiation ,Chronic Renal Insufficiency Cohort ,CRIC Study Investigators ,Public Health and Health Services ,Urology & Nephrology ,Clinical sciences - Abstract
BackgroundIt is not clear whether the pattern of kidney function decline in patients with chronic kidney disease (CKD) may relate to outcomes after reaching end-stage renal disease (ESRD). We hypothesize that an abrupt decline in kidney function prior to ESRD predicts early death after initiating maintenance hemodialysis therapy.Study designProspective cohort study.Setting & participantsThe Chronic Renal Insufficiency Cohort (CRIC) Study enrolled men and women with mild to moderate CKD. For this study, we studied 661 individuals who developed chronic kidney failure that required hemodialysis therapy initiation.PredictorsThe primary predictor was the presence of an abrupt decline in kidney function prior to ESRD. We incorporated annual estimated glomerular filtration rates (eGFRs) into a mixed-effects model to estimate patient-specific eGFRs at 3 months prior to initiation of hemodialysis therapy. Abrupt decline was defined as having an extrapolated eGFR≥30mL/min/1.73m(2) at that time point.OutcomesAll-cause mortality within 1 year after initiating hemodialysis therapy.MeasurementsMultivariable Cox proportional hazards.ResultsAmong 661 patients with CKD initiating hemodialysis therapy, 56 (8.5%) had an abrupt predialysis decline in kidney function and 69 died within 1 year after initiating hemodialysis therapy. After adjustment for demographics, cardiovascular disease, diabetes, and cancer, abrupt decline in kidney function was associated with a 3-fold higher risk for death within the first year of ESRD (adjusted HR, 3.09; 95% CI, 1.65-5.76).LimitationsRelatively small number of outcomes; infrequent (yearly) eGFR determinations; lack of more granular clinical data.ConclusionsAbrupt decline in kidney function prior to ESRD occurred in a significant minority of incident hemodialysis patients and predicted early death in ESRD.
- Published
- 2016