What is the most common cause of methemoglobinemia in the hospital setting?
In a review of 132 cases, the most common product causing methemoglobinemia was a single benzocaine spray of unspecified duration.
Moore TJ, Walsh CS, Cohen MR. Reported adverse event cases of methemoglobinemia associated with benzocaine products. Arch Intern Med. 2004;164(11):1192-1196. doi:10.1001/archinte.164.11.1192
Submitted by: Natasha Tobarran, DO on behalf of The Medical Toxicology Fellowship, Virginia Commonwealth University