Severe injury can occur rapidly following disc battery ingestion. A high index of suspicion for an esophageal disc battery is necessary to expeditiously diagnose this condition. Emergency endoscopic removal is necessary. We outline a protocol for the management of this hazardous problem.

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with increasing dose; approximately 8 hr when using 4 mg. butorphanol or morphine for the relief of post-cesarean Sixty-two percent of the patients who received morphine had pruritus. Somnolence was the main side effect encountered section pain: ventilatory responses to carbon dioxide. Anesth Analg 1987;66:887-93. in patients who received epidural butorphanol. The ventilatory response to C 0 2 was depressed after morphine and To the safetyr and the re-after 2 and 4 mg butorphanol, blit the duration of depression sponses to carbon dioxide (co2) Of epidurally administered was more prolonged after morphine, It is concluded that butorphanol Or 122 who under-epidural butorphan01 is effective in providing pain relief after Patients were randomly assigned to receive One Of four ePimust be observed closely because of possjble respiratory went cesarean section with epidural anesthesia were studied. section with side H~~~~ patients dural regimens for the relief of postoperative pain: 5 mg morphine (n = 32), 4 mg butorphanol ( n = 30), 2 mg butorphanol (n = 29), or 1 mg butorphanol (n = 31). Key Words: ANESTHESIA-obstetrical. ANES-Epidural morphine provided satisfactory analgesia with slow THETIC TECHNIQUES-epidural. ANALGESICSonset and long duration of approximately 21 hr. When butorphanol, morphine. PAIN-postoperative. depression.Epidural administration of morphine produces profound postoperative analgesia (1). However, its use has been associated with the occurrence of undesirable side effects, including pruritus, nausea, vomiting, urinary retention, and respiratory depression. A recent report on the use of epidurally administered butorphanol in post-cesarean section patients indicated the reliable production of analgesia with a lack of undesirable side effects (2). However, an appropriately sensitive method of assessing the respiratory effects was not used.The present study was undertaken to evaluate the respiratory effects of epidurally administered mor-

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