Overview Determination of Analgesic Equipotent Doses of Inhaled Metoxyflurane vs. Intravenous Fentanyl Status: Completed Trial end date: 2019-10-29 Target enrollment: Participant gender: Summary The aim of this study is to determinate the equipotent doses of inhaled metoxyflurane vs. intravenous fentanyl. Phase: Phase 4 Details Lead Sponsor: Oslo University HospitalTreatments: AnalgesicsFentanylMethoxyflurane