Overview Nitrous Oxide for Analgesia During Colonoscopy Status: Completed Trial end date: 2008-09-01 Target enrollment: Participant gender: Summary The purpose of the study is to determine the analgetic effect of nitrous oxide during colonoscopy, compared to no sedation and intravenous (IV) sedation. Phase: Phase 4 Details Lead Sponsor: Rikshospitalet University HospitalTreatments: Nitrous Oxide