title: Use of a fentanyl infusion in the intensive care unit: tolerance to its anesthetic effects?
mesh_terms: D000328:Adult; D000771:Anesthesia, Intravenous / Q000379:methods*; D003422:Critical Care; D004361:Drug Tolerance; D005283:Fentanyl / Q000008:administration & dosage*; D006801:Humans; D008297:Male; D012121:Respiration, Artificial / Q000379:methods*
chemical_list: D005283:Fentanyl