mrcem2-1700

mrcem2-1700

A 45 year old comes to the emergency department with swelling of the lips and tongue that developed slowly over the past 3 hours. There is no accompanying rash. The patient denies consuming anything unusual and has no known allergies. The patient recently began taking multiple new medications after experiencing a heart attack one month ago. You suspect that the patient is experiencing non-allergic drug induced angioedema. What is the most probable cause of the patient’s symptoms?