Acute dyspnea in a postpartum patientFittro, Kenneth PA-C; Nichols, William DOJournal of the American Academy of Physician Assistants: January 2014 - Volume 27 - Issue 1 - p 29–31 doi: 10.1097/01.JAA.0000438531.84515.95 Case Report Abstract Author Information ABSTRACT: Topical benzocaine sprays used to relieve perineal pain in postpartum patients can, rarely, lead to methemoglobinemia. In patients with other medical issues, such as anemia, methemoglobinemia can become symptomatic, causing acute dyspnea and potentially becoming life-threatening. At Borgess Medical Center in Kalamazoo, Mich., Kenneth Fittro is a PA on the rapid response team, and William Nichols practices critical care. The authors have indicated no relationships to disclose relating to the content of this article. © 2014 American Academy of Physician Assistants.