Acute renal failure in the elderly: experience from a single centre in India.

A total of 139 patients with acute renal failure (ARF) were studied, of which 41 (29.4%) were elderly with mean age of 67.1 years and 98 (70.6%) were younger with mean age of 32.3 years. Surgical causes accounted for 65% of geriatric ARF while medical causes were predominant in the younger patients (55.1%). Amongst the surgical causes, prostate-related problems due to obstruction or following transurethral resection of prostate were seen in 20 patients (74%). Drugs and sepsis were the predominant causes of medical ARF in the geriatric patients (85.7%). Of all the causes of geriatric ARF, which included both medical and surgical, nephrotoxic drugs either alone or in combination with other predisposing factors were the cause in 22 (51%) patients. Haemodialysis was needed in 15 of geriatric (36.6%) and 64 of younger (65.3%) ARF patients. Recovery from ARF, as evidenced by normalization of serum creatinine, was delayed in the elderly as compared to the younger patients (32.0 versus 11.4 days, P < 0.001). Mortality, though higher in the elderly as compared to the younger patients, was not significantly different (9.75% versus 6.1%).