title: Awareness during fentanyl anesthesia.
mesh_terms: D000758:Anesthesia / Q000009:adverse effects*; D001364:Awareness; D003071:Cognition; D005283:Fentanyl / Q000009:adverse effects*; D006801:Humans; D007431:Intraoperative Complications
chemical_list: D005283:Fentanyl