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Ann Thorac Surg 1997;64:1564-1568
© 1997 The Society of Thoracic Surgeons

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Supplement: Cardiovascular Surgery: Then and Now

Aortic Root Aneurysms: Remodeling or Composite Replacement?

Division of Cardiovascular Surgery, The Toronto Hospital, University of Toronto, Toronto, Ontario, Canada

Abstract

Background. Patients with ascending aortic aneurysms often have aortic insufficiency due to dilatation of the aortic root. Although composite replacement of the aortic valve and ascending aorta has been the standard treatment, an aortic valve-sparing operation is feasible in patients with normal aortic valve leaflets.

Methods. From 1988 to 1996, 208 patients with ascending aortic aneurysms and aortic insufficiency were operated on. Aortic valve-sparing operations were performed in 101 patients: 70 men and 31 women with a mean age of 53 years (range, 14 to 82 years). Twenty-eight patients had the stigmata of Marfan's syndrome. Fifteen patients had acute and 8 had chronic type A aortic dissection. Coronary artery disease was detected in 19 patients and mitral regurgitation in 5. Two types of aortic valve-sparing operations were performed: remodeling of the aortic root with preservation of the aortic valve in 73 patients and reimplantation of the aortic valve in a tubular Dacron graft in 28. Patients were followed up from 3 to 108 months (mean, 31 months). Doppler echocardiographic studies were performed annually.

Results. There were two operative deaths. One patient had to have aortic valve replacement because of persistent aortic insufficiency. There were five late deaths; the actuarial survival rate at 6 years was 87% ± 5%. One patient required aortic valve replacement 2 years after the initial operation; the freedom from aortic valve replacement at 6 years was 97% ± 2%. There have been no thromboembolic or infective complications. Only 3 patients have moderate aortic insufficiency; the remaining patients have mild or no aortic insufficiency.

Conclusions. The midterm results of aortic valve-sparing operations have been excellent and justify their continued use in patients with aortic root aneurysms and normal or near-normal aortic valve leaflets.

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