title: Naloxone reversal of choledochoduodenal sphincter spasm associated with narcotic administration.
mesh_terms: D000328:Adult; D014670:Ampulla of Vater / Q000187:drug effects*; D002758:Cholangiography; D005260:Female; D005283:Fentanyl / Q000009:adverse effects*; D006801:Humans; D009020:Morphine / Q000009:adverse effects; D009270:Naloxone / Q000627:therapeutic use*; D013035:Spasm / Q000139:chemically induced* / Q000188:drug therapy; D009803:Sphincter of Oddi / Q000187:drug effects*
chemical_list: D009270:Naloxone; D009020:Morphine; D005283:Fentanyl