The evolution of acute renal failure, 1956-1988.

A total of 1347 patients with severe acute renal failure, treated at a single centre between 1956 and 1988, are reviewed. Only patients with an acute uraemic episode requiring dialysis and/or with serum creatinine levels above 600 mumols/l were included. The age of patients increased from median 41.25 years in the 1950s to 60.5 years in the period 1980 to 1988. The case-mix also altered with a decline in obstetric and traumatic disease, both of which carried an excellent prognosis, and an increase in the number of elderly patients with complicated medical and surgical conditions. Survival significantly decreased with increasing age and in the presence of complicating factors such as sepsis or malignancy. Despite these changes, there has been a progressive improvement in survival from 48.8 per cent in 1956-1959 to 57.9 per cent in 1985-1988. Survival for medical and surgical cases has improved from 38.5 per cent in 1956-1959 to 57.9 per cent in 1985-1988 (overall survival for non-obstetric cases was 44.2 per cent), due to improved prognosis for acute renal failure in general and acute renal failure due to intrinsic renal disease in particular.