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Nefrología (Madrid)

versión On-line ISSN 1989-2284versión impresa ISSN 0211-6995

Resumen

MARINOVICH, Sergio et al. Initial Glomerular Filtration Rate and Survival in Hemodialysis: the role of permanent vascular access. Nefrología (Madr.) [online]. 2014, vol.34, n.1, pp.76-87. ISSN 1989-2284.  https://dx.doi.org/10.3265/Nefrologia.pre2013.Oct.11957.

Background: A significant increase in the number of patients starting chronic hemodialysis (HD) with an estimated glomerular filtration rate (eGFR)≥10mL/min/1.73m2 was observed in Argentina between 2004 and 2009. Methods: In order to study this topic, we calculated the mortality hazard ratios (HR) in a cohort of incident HD individuals from the Argentine Registry of Chronic Dialysis [Registro Argentino de Diálisis Crónica] (2004-2009), grouped according to the initial eGFR (0-4.9, 5-9.9, 10-14.9 and ≥15mL/min/1.73m2 ; reference group 0-4.9) estimated by CKD-EPI; in three cohorts: "total population", "healthy (<65 years, without diabetes or comorbidities) and "planned entry" (with permanent vascular access). Results: After adjusting the population (n=16,931) for age, gender, coexisting conditions, serum albumin, income, and temporary vascular access a HR of 1.19 (95%CI:1.07-1.33) was observed in the group with eGFR≥15mL/min/1.73m2. In the cohort of 3,897 "healthy" after adjusting for the same co-variates, HRs of 1.44 (95%CI: 1.08-1.65) and 1.65 (95%CI: 1.06-2.55) were obtained for the groups with baseline eGFR values of 10-14.9 and ≥15mL/min/1.73m2, respectively. In "planned entry" patients (n=6,280), after adjusting for age, gender, co-morbidities, serum albumin and income, HRs in all groups were not significantly different as compared to the control group. Conclusions: HD initiation with eGFR>10mL/min/1.73m2 shows no survival advantage. The higher mortality in the group with >eGFR starting dialysis looks like an "artifact" related to higher age, more co-morbidities, low albuminemia and the use of temporary vascular access.

Palabras clave : Clinical epidemiology; End-stage renal diseases; Hemodialysis; Glomerular filtration rate; Survival; Vascular access.

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