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Revista de la Sociedad Española de Enfermería Nefrológica

Print version ISSN 1139-1375


BARBOSA MARTIN, Francisco et al. Obesity and survival after 5 years in patients with advanced chronic renal insufficiency. Rev Soc Esp Enferm Nefrol [online]. 2007, vol.10, n.3, pp.74-78. ISSN 1139-1375.

In recent years a number of studies have been published on patients with chronic renal insufficiency undergoing haemodialysis in which it is shown "paradoxically" that, contrary to what occurs in the population in general, obesity, measured through the body mass index, is related to better survival. Here we have studied the influence of obesity on survival after 5 years in patients with renal insufficiency in predialysis. The sample was made up of 160 patients, seen for the first time in the predialysis clinic between 1 September 1998 and 31 October 1999. The data required to calculate their BMI (weight (kg)/height2) was taken from the nursing case history on the first (basal) and last (final) predialysis visit. We considered patients with BMI≥30 to be obese. Of the 157 patients whose evolution after 5 years is known to us: 85 (54%) were still alive: 19 were still in predialysis, 43 on dialysis and 23 with a functioning transplant. The patients with a BMI≥30 had a lower survival in months than the non-obese patients (53±24 compared to 61±19 months p= 0.04), in other words, obesity defined as IMC≥30 has a negative effect on survival after 5 years in our population of patients with advanced renal insufficiency treated in the predialysis clinic.

Keywords : Survival; Obesity; Body mass index; Chronic renal insufficiency.

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