Abstract
The institute of gastroenterology Jichi medical college. The pre-mixed gas (30% N20, 70% O2) was used on laparoscopic examination to relieve patients from pain and anxiety. The pre-mixed gas was administered through face-mask during laparoscopic examination of twenty patients with hepatic disorders. In fifteen, it was effective i, e, total analgesia. In one patient, in whom subcutaneous emphysema accidentaly developed early in the examination, the pre-mixed gas was ineffective. In seven patients, no side effect of the pre-mixed gas was encountered. The pre-mixed gas proved markedly effective as an analgesic on laparoscopic examination with no serious side effect.
