The purpose of this protocol is to compare two methods of analgesia/sedation for colonoscopy. Sedation and analgesia induced by a 50% nitrous oxide/oxygen mixture could sufficient to allow the practice of colonoscopy instead of general anesthesia which is accompanied with certain risks and post procedure drowsiness.
The aim of this study was to compare the analgesia provided by nitrous oxide/oxygen sedation or general anesthesia for colonoscopy