title: Postoperative analgesia and lung function: a comparison of morphine with extradural block.
mesh_terms: D000328:Adult; D000698:Analgesia; D000775:Anesthesia, Spinal; D002245:Carbon Dioxide / Q000097:blood; D005763:Gastroenterostomy; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008168:Lung / Q000000981:diagnostic imaging / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D009020:Morphine; D010100:Oxygen / Q000097:blood; D011014:Pneumonia / Q000209:etiology; D011182:Postoperative Care; D011183:Postoperative Complications; D011859:Radiography; D012907:Smoking; D013147:Spirometry; D014628:Vagotomy
chemical_list: D002245:Carbon Dioxide; D009020:Morphine; D010100:Oxygen