Alfentanil in outpatient ENT surgery.
D015760:Alfentanil; D000556:Ambulatory Surgical Procedures; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D005283:Fentanyl / Q000008:administration & dosage / Q000031:analogs & derivatives*; D006801:Humans; D010038:Otorhinolaryngologic Diseases / Q000601:surgery*
D000701:Analgesics, Opioid; D015760:Alfentanil; D005283:Fentanyl