Benzocaine-induced methemoglobinemia--two case reports related to transesophageal echocardiography premedication.

Cardiovasc Drugs Ther

Division of Cardiology, San Francisco General Hospital Medical Center, University of California, USA.

Published: July 1998

Benzocaine-induced methemoglobinemia is a potentially life-threatening complication. We report two cases of methemoglobinemia due to topical benzocaine spray used as premedication for transesophageal echocardiography. A high index of suspicion is needed for this readily treatable condition.

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http://dx.doi.org/10.1023/a:1007778002540DOI Listing

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