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Ann Thorac Surg 1998;66:88-91
© 1998 The Society of Thoracic Surgeons

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Original articles: cardiovascular

Repeat aortic root replacement

^a Cardiac Surgical Unit, Massachusetts General Hospital and Mount Auburn Hospital, Harvard Medical School, Boston, Massachusetts, USA

Accepted for publication February 13, 1998.

Address reprint requests to Dr Tam, 300 Mount Auburn St, Suite 516, Cambridge, MA 02138

Background. Aortic root replacement in patients who have undergone previous aortic root replacement presents a formidable technical challenge, which may lead to increased surgical mortality.

Methods. We reviewed our experience from January 1989 through November 1995. Seven consecutive patients (6 men and 1 woman) underwent eight repeat aortic root replacements. Mean follow-up was 19 months. Previous root replacement had been performed with homograft in 1 patient, with a bioprosthetic valve composite graft in 1 patient, and with a mechanical valve composite graft in 6 patients. The techniques used at the previous procedures were the Cabrol technique (2 patients), Bentall technique (3 patients), and the coronary button technique (3 patients). Reoperation was indicated for pseudoaneurysm formation in 4 patients and for endocarditis in the others.

Results. Aortic homografts were implanted in all patients with endocarditis and mechanical valve composite grafts were used in the others. In all reoperations, the coronary button technique was used. No procedures were done emergently. Concomitant procedures were performed in 2 patients, including mitral valve replacement and aortic arch aneurysm repair. One patient had recurrence of his endocarditis 36 months after operation because of continued intravenous drug use requiring a second successful homograft root replacement. There were no early deaths and one late death at 16 months after operation.

Conclusions. Repeat aortic root replacement, even in the setting of endocarditis, can be done with low mortality.

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