title: [Respiratory depression due to pentazocine, halothane, N2O anesthesia and its reversal by naloxone].
mesh_terms: D000328:Adult; D000368:Aged; D006221:Halothane; D006801:Humans; D008875:Middle Aged; D009270:Naloxone / Q000494:pharmacology*; D009458:Neuroleptanalgesia; D009609:Nitrous Oxide; D010423:Pentazocine; D011184:Postoperative Period; D012119:Respiration / Q000187:drug effects*
chemical_list: D009270:Naloxone; D009609:Nitrous Oxide; D010423:Pentazocine; D006221:Halothane