secondary saturation

sec·on·dar·y sat·u·ra·tion

a technique of nitrous oxide anesthesia consisting of an abrupt curtailment of the oxygen in the inhaled mixture to produce a deep plane of anesthesia, following which oxygen is administered to correct hypoxia.

sec·on·dar·y sat·ur·a·tion

(sek'ŏn-dar-ē sach'ŭr-ā'shŭn) A technique of nitrous oxide anesthesia consisting of an abrupt curtailment of the oxygen in the inhaled mixture to produce a deep plane of anesthesia, following which oxygen is administered to correct hypoxia.