Intrathecal morphine: naloxone reverses respiratory depression but not analgesia.
D000698:Analgesia; D006801:Humans; D007278:Injections, Spinal; D008297:Male; D008875:Middle Aged; D009020:Morphine / Q000008:administration & dosage / Q000009:adverse effects* / Q000037:antagonists & inhibitors; D009270:Naloxone / Q000627:therapeutic use*; D012131:Respiratory Insufficiency / Q000139:chemically induced* / Q000188:drug therapy
D009270:Naloxone; D009020:Morphine