High-dose fentanyl.
D002319:Cardiovascular System / Q000187:drug effects; D004341:Drug Evaluation; D005283:Fentanyl / Q000008:administration & dosage* / Q000494:pharmacology; D006801:Humans; D009458:Neuroleptanalgesia; D012119:Respiration / Q000187:drug effects
D005283:Fentanyl