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The Syndrome of Methoxyflurane-Associated Hepatitis

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Grant support: the Irwin Strasburger Memorial Medical Foundation; and the Stratfield Fund.

▸Requests for reprints should be addressed to Harold O. Conn, M.D., Medical Service, Veterans Administration Hospital, West Haven, CT 06516.

West Haven and New Haven, Connecticut

Ann Intern Med. 1974;80(3):395-401. doi:10.7326/0003-4819-80-3-395
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Methoxyflurane, an excellent, nonexplosive, fluorinated anesthetic agent, has occasionally been reported to induce liver injury. We reviewed 24 cases of the syndrome with adequate data. Two thirds of the patients were women, frequently obese. The mean age of the patients was 51 years. Half the patients had previously been exposed to halothane or methoxyflurane. Fever, the presenting symptom in half the patients, appeared from a few hours to 14 days after surgery (mean, 4 days), and evidence of hepatitis, shortly thereafter (mean, 5.8 days). The latent period was shorter in patients who had previously received these anesthetic agents. Eosinophilia occurred in 20% of the patients. Histologic examination showed a lesion indistinguishable from viral hepatitis. Fourteen of the 24 patients died (58%). Apparent cross-sensitization and cross-precipitation of hepatitis by halothane or methoxyflurane occurred frequently. Four patients (17%) developed the methoxyflurane-induced hepatorenal syndrome.





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