[The dynamics of parathyroid hormone and calcitonin in surgery with artificial circulation].

The use of considerable amounts of gelatinol in hypothermal perfusion determined the occurrence of marked hypercalcemia. The hormonal mechanism (parathyroid hormone and calcitonin) responsible for hypercalcemia compensation proved to be inefficient under hypothermal perfusion. A forced diuresis failed to result in rapid normalization of blood calcium concentrations. The volume of gelatinol used during extracorporeal circulation is not to exceed 500 ml.