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Methemoglobinemia and acute hemolysis after tetracaine lozenge use.

作者信息

Lavergne Sandrine, Darmon Michael, Levy Vincent, Azoulay Elie

机构信息

Service de Réanimation Médicale, Hôpital Saint Louis, Assistance Publique des Hôpitaux de Paris, 75475 Paris Cedex 10, France.

出版信息

J Crit Care. 2006 Mar;21(1):112-4. doi: 10.1016/j.jcrc.2005.08.006.

Abstract

Acquired methemoglobinemia is a rare but severe condition associated with oxidizing stressors, most notably medications. Although the symptoms can be life threatening, they usually respond promptly to exposure cessation and methylene blue injection. We describe the first case of methemoglobinemia associated with tetracaine lozenge use. A previously healthy 33-year-old man was admitted with fever, respiratory distress, cyanosis, and acute hemolysis. Physical findings and chest radiograph were normal. Low pulse oximetry readings contrasted with normal partial pressure of oxygen and calculated oxygen saturation. The methemoglobin level was 10.8%. The patient recovered with methylene blue injection and blood transfusions. He reported recent self-medication with tetracaine lozenges for a sore throat during a flu-like illness. No other cause of methemoglobinemia was found.

摘要

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