Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons
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J. Oral Maxillofac. Surg. · Nov 1984
Case ReportsBenzocaine-induced methemoglobinemia during general anesthesia.
A case is reported in which a patient developed cyanosis under general anesthesia due to methemoglobinemia. The cause of the methemoglobinemia was benzocaine applied topically to the pharynx and trachea. ⋯ If possible, determination of arterial blood gases should be made to obtain the methemoglobin concentration. Finally, all medical and dental personnel using benzocaine should be aware of the recommended dose and the possible complications of overdosage.