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
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.