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Surgery
A 56-year-old man undergoes a left upper lobectomy. An epidural catheter is inseed for postoperative pain relief. Ninety minutes after the first dose of epidural morphine, the patient complains of itching and becomes increasingly somnolent. Blood gas measurement reveals the following: pH 7.24; PaCO2 58; Pa02 100; HCO3:28 Initial therapy should include:
Endotracheal intubation
Intramuscular diphenhydramine
Epidural naloxone
Intravenous naloxone
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