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Paper Details

Life-Threatening Methemoglobinemia Caused by Topical Anesthetic Given Prior to Transesophageal Echocardiography  

Obiora Egbuche1 MD, MPH; Kenechukwu Nwagbara2* MD, MPH; Bishoy Hanna1 MD; Temidayo Abe1 MD; Anekwe Onwuanyi1,3 MD  

Journal Title:Annals of Case Reports & Reviews
Abstract


Topical benzocaine spray is a local anesthetic agent that is commonly used during transesophageal echocardiography (TEE). This agent is believed to be safe because it has very low systemic absorption. We report a case of life-threatening methemoglobinemia following very minimal dose of benzocaine spray.  

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