[Multiple dose epidural meperidine for postoperative pain relief after upper abdominal surgery].
D000005:Abdomen / Q000601:surgery; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007268:Injections, Epidural; D008297:Male; D008614:Meperidine / Q000008:administration & dosage* / Q000009:adverse effects; D008875:Middle Aged; D010149:Postoperative Pain / Q000188:drug therapy*; D013997:Time Factors; D014797:Vital Capacity
D008614:Meperidine