[Preservation by anesthesia management of the normal functioning of the external respiration system following surgery of the upper abdominal organs].

The impact of different variants of neuroleptanalgesia (NLA) on respiration immediately after gastric resection and cholecystectomy has been studied in two homogeneous groups of patients (30 persons each) after operations on the upper abdominal organs. In patients of group I NLA was performed using fentanyl (initial dose--7.5 micrograms/kg, maintenance dose--100 micrograms) supplemented with epidural blockade and isovolemic hemodilution. In patients of group II NLA was performed with graded administration of 100-200 micrograms fentanyl. In patients of group I right after surgery gas exchange during room air inhalation was unimpaired, while in patients of group II hypoxemia due to inadequate ventilation and metabolic acidosis were registered. It is concluded that the type of anesthesia management suggested has a protective effect on respiration in the earliest postoperative period.