Acute aortic dissection mimicking an acute coronary syndrome through occlusion of the right coronary artery

Abstract

Occlusion of the right coronary artery (RCA) is an uncommon complication of type A aortic dissection. Aortic dissection and acute coronary syndrome (ACS) share a similar pathogenesis in atherosclerosis and hypertension. Consequently a patient with ischaemic risk factors presenting with chest pain and dynamic ECG change may well be incorrectly treated for ACS if careful attention is not paid to the presenting symptoms and signs. This case report describes a 59-year-old man who presented with chest pain, confusion and an ischaemic ECG and was initially treated for ACS. He subsequently deteriorated clinically and imaging confirmed type A aortic dissection complicated by RCA occlusion. Following emergent surgery with aortic root replacement and coronary artery bypass grafting he later made a good recovery.

Figure 1

ECG on admission showing widespread ischaemic change.

Figure 2

Contrast-enhanced CT scan showing type A aortic dissection occluding the right carotid artery origin.