Acute Right Ventricular Dysfunction Secondary to Hereditary Angioedema Exacerbation.

This is a case report of a 31-year-old woman with past medical history of hereditary angioedema (HAE) who developed acute right ventricular dysfunction. The patient presented to the emergency department with complaints of acute abdominal pain and swelling. Her electrocardiogram demonstrated sinus tachycardia and T wave inversion in leads V1-V3, otherwise without findings suggestive of ischemia. Troponin was elevated at 1.83 ng/mL. A transthoracic echocardiogram showed normal left ventricular function with ejection fraction of 65-70%, but the right ventricle (RV) was dilated and severely hypokinetic and there was moderate tricuspid regurgitation. Patient was managed symptomatically for her HAE exacerbation. Her abdominal swelling resolved, troponins continued to trend down, and she was discharged home after three days. A follow up echocardiogram done six months later demonstrated normal RV function.