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J Thorac Cardiovasc Surg 2006;131:601-608
© 2006 The American Association for Thoracic Surgery

Surgery for Acquired Cardiovascular Disease

Aortic root replacement after previous surgical intervention on the aortic valve, aortic root, or ascending aorta

^a Department of Chirurgie Thoracique et Cardiovasculaire, Hôpital Henri Mondor, Créteil, France
^b Department of Réanimation Médicale, Hôpital Henri Mondor, Créteil, France

Received for publication August 23, 2005; revisions received October 23, 2005; accepted for publication November 2, 2005.

^_* Address for reprints: Matthias Kirsch, MD, PhD, Department of Cardiothoracic Surgery, Hospital Henri Mondor, 51 Avenue Marchal de Lattre de Tassigny, 94 000 Créteil Cedex, France (Email: matthias.kirsch{at}hmn.aphp.fr).

BACKGROUND: Aortic root replacement after a previous operation on the aortic valve, aortic root, or ascending aorta remains a major challenge.

METHODS: Records of 56 consecutive patients (44 men; mean age, 56.4 ± 13.6 years) undergoing reoperative aortic root replacement between June 1994 and June 2005 were reviewed retrospectively.

RESULTS: Reoperation was performed 9.4 ± 6.7 years after the last cardiac operation. Indications for reoperation were true aneurysm (n = 14 [25%]), false aneurysm (n = 10 [18%]), dissection or redissection (n = 9 [16%]), structural or nonstructural valve dysfunction (n = 10 [18%]), prosthetic valve-graft infection (n = 12 [21%]), and miscellaneous (n = 1 [2%]). Procedures performed were aortic root replacement (n = 47 [84%]), aortic root replacement plus mitral valve procedure (n = 5 [9%]), and aortic root replacement plus arch replacement (n = 4 [7%]). In 14 (25%) patients coronary artery bypass grafting had to be performed unexpectedly during the same procedure or immediately after the procedure to re-establish coronary perfusion. Hospital mortality reached 17.9% (n = 10). Multivariate logistic regression analysis revealed the need for unplanned perioperative coronary artery bypass grafting as the sole independent risk factor for hospital death (P = .005). Actuarial survival was 83.8% ± 4.9% at 1 month, 73.0% ± 6.3% at 1 year, and 65.7% ± 9.0% at 5 years after the operation. One patient had recurrence of endocarditis 6.7 months after the operation and required repeated homograft aortic root replacement.

CONCLUSION: Reoperative aortic root replacement remains associated with a high postoperative mortality. The need to perform unplanned coronary artery bypass grafting during reoperative aortic root replacement is a major risk factor for hospital death. The optimal technique for coronary reconstruction in this setting remains to be debated.

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