Single-stage transmediastinal replacement of the ascending, arch, and descending thoracic aorta.

Abstract

Aneurysms of the ascending, arch, and descending thoracic aorta are typically managed with two operations. The first stage involves replacement of the ascending and arch aorta leaving a segment of graft in the proximal descending aorta with a mortality and stroke risk of 8%. The second stage involves replacement of the descending aorta with a mortality of 5% and a paraplegia risk of 5% to 10%. Some patients refuse surgical completion and others are at increased risk to undergo the second stage thoracotomy, leaving them with untreated descending thoracic aortic aneurysms vulnerable to rupture. A single-stage transmediastinal operation used in 14 patients is described. Under circulatory arrest, the descending thoracic aorta is opened. A wire is passed up to the arch and a graft is brought down and secured excluding the descending thoracic aneurysm. The arch vessels are attached as a single patch and the graft is brought forward, replacing the ascending aorta. Fourteen patients have undergone single-stage replacement of the ascending, arch, and descending aorta with a 14% mortality rate and 14% incidence of paraplegia. Patients with aneurysms of the ascending, arch, and descending thoracic aorta can be managed with a single operation with comparable mortality and morbidity of the two-stage approach.