Sudden Cardiac Death from Acute Myocardial Infarction Caused by Unruptured Ascending Aortic Aneurysm Involving the Sinus of Valsalva: An Autopsy Case

Abstract

Ascending aortic aneurysm of the thorax is a condition characterized by an increase in the diameter of the ascending aorta between the aortic valve and the brachiocephalic artery. Most patients with ascending aortic aneurysm are asymptomatic and do not require treatment; the rates of dissection, rupture, and mortality are also low. In this report, we describe the autopsy findings in a case of sudden death due to acute myocardial infarction secondary to the previously asymptomatic, unruptured, and undissected aortic aneurysm of the thoracic ascending aorta extending to the sinus of Valsalva. The findings in this case emphasize the importance of preventive management of asymptomatic ascending aortic aneurysms, and possible mechanisms of sudden cardiac death in patients with uncomplicated ascending aortic aneurysm is also discussed.