Renal replacement treatment has not been generalized to the elderly for different reasons. The main objective of the present cohort study is to compare survival in patients older than 80 years with chronic kidney disease stage 5 on renal replacement treatment with those on conservative treatment. The use of healthcare resources is compared too. A Cox proportional hazards regression analysis was run with the outcome variable death during the follow‐up period. The independent variables were treatment type, age, gender, smoking habit, serum albumin, hemoglobin, Charlson Index, diabetes mellitus, arterial hypertension, ischemic cardiopathy, and neoplasm. For outcome variable “death,” renal replacement treatment obtained a hazard ratio of 0.273 (P .006, CI95% 0.108‐0.686) vs conservative treatment. In conclusion, patients older than 80 years with chronic kidney disease stage 5 on renal replacement treatment presented a lower mortality risk than those receiving conservative treatment. Comorbidity and age are both associated with mortality, but do not cancel out the survival advantage. In healthcare resources, the renal replacement treatment group made greater use of tests, medical visits and consumption of hospital dispensing drugs, but there were no differences with respect to the days of hospital admission or assistance in home hospitalization.

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It has been suggested that physical exercise in chronic hemodialysis could improve dialysis dose and reduce postdialysis rebound. A randomized controlled trial was performed to compare a group of patients doing physical exercise during the first 2 h of hemodialysis sessions and another group doing physical exercise at home. The descriptive variables, dialysis doses measured by KtV, and rebounds (urea, creatinine, potassium, phosphorus), were recorded. For 69 patients: the mean KtV was 1.84; the 30-min rebound of creatinine was 32.37%, urea 24.39%, potassium 15.31%, and phosphorus 51.29%. For each patient, the basal measurement was compared with those determined when performing physical exercise; no statistically significant differences were observed between the changes determined to dose and rebound in the group with hemodialysis exercise compared to those of the home exercise group. In conclusion, performing physical exercise during the first 2 hours of hemodialysis sessions neither lowered postdialysis molecules rebound nor improved dialysis dose.