This is an archive of papers published by the staff and faculty of Fox Chase Cancer Center. For questions about content, please contact Talbot Research Library
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Henry LR , Pizzini M , Delarso B , Ridge JA
Methemoglobinemia: Early intraoperative detection by clinical observation
Laryngoscope. 2004 Nov;114(11) :2025-2026
AbstractObjectives/Hypothesis: Head and neck surgery patients often receive topical anesthetics in the office for examination or in the operating room for nasotracheal intubation. Benzocaine (a component of many topical preparations) is frequently employed for this purpose. Acute methemoglobinemia is a rare but potentially lethal complication of benzocaine administration. Early recognition and treatment may prevent complications or death. We report a case of acute intraoperative methemoglobinemia, caused by benzocaine spray, which was diagnosed (and reversed) quickly after the clinical observation of "chocolate brown blood" in the surgical field.