[Excretory function of the kidneys during artificial circulation in patients operated on for acquired heart defects].

The authors have shown that the suppression of the excretory function of the kidneys during the period of artificial circulation is considerably dependent on the concentration of vasopressin in blood and the associated spasm of renal vessels. The use of morphine as the main medicine for general anesthesia with the dose of 3 mg/kg as compared with the dose 2 mg/kg, gives less level of vasopressin in blood and thus reduces symptoms of antidiuresis in response to the action of strong stressogenic factors.