title: [Effect of epidural morphine on ventilatory and airway occlusion pressure responses to CO2].
mesh_terms: D000328:Adult; D000767:Anesthesia, Epidural; D002245:Carbon Dioxide; D003864:Depression, Chemical; D006801:Humans; D008875:Middle Aged; D009020:Morphine / Q000494:pharmacology; D012119:Respiration / Q000187:drug effects*; D012129:Respiratory Function Tests
chemical_list: D002245:Carbon Dioxide; D009020:Morphine