[Changes in kidney function in abdominoperineal rectum excision under halothane anesthesia].
In 17 cases of abdomino-perineal rectum extirpation performed under combined intratracheal halothane anaesthesia, the volume of urine and the osmolality of serum and urine were determined. Though urinary volume decreased significantly, its osmolality did not rise. According to the operational stress this type of operation can be divided into an: 1) intra-abdominal and a 2) perineal phase. In the secretory and concentrating capacity of the kidney, again two phases can be distinguished. Owing to the great operational stress patients with deficient renal function often develop renal failure. It is stressed that such patients close observation, careful hydration prior to operation and the administration of diuretics are of particular importance.