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J Thorac Cardiovasc Surg 2004;128:260-265
© 2004 The American Association for Thoracic Surgery
Surgery for acquired cardiovascular disease |
a Division of Cardiovascular Surgery of Toronto General Hospital and the University of Toronto, Toronto, Ontario, Canada
Received for publication September 4, 2003; revisions received October 22, 2003; accepted for publication November 4, 2003.
* Address for reprints: Tirone E. David, MD, 200 Elizabeth St, 13EN-219, Toronto, Ontario, Canada, M5G 2C4
tirone.david{at}uhn.on.ca
OBJECTIVES: We sought to compare the clinical profile and outcomes of operations for aortic valve disease and ascending aortic aneurysm in patients treated with aortic valve replacement and supracoronary replacement of the ascending aorta or composite replacement of the aortic valve and ascending aorta (Bentall operation).
METHODS: From 1990 through 2001, 133 patients had aortic valve replacement and supracoronary replacement of the ascending aorta, and 452 patients had Bentall operations. Aortic valve replacement and supracoronary replacement of the ascending aorta was performed in patients who had aortic valve disease and dilation of the ascending aorta, whereas the Bentall operation was performed in patients with aortic root abnormality and ascending aortic aneurysm. Mean follow-up was 4.6 ± 3.1 years and was 100% complete.
RESULTS: Patients who had aortic valve replacement and supracoronary replacement of the ascending aorta were older (61 ± 13 vs 52 ± 16 years, P < .001) and more likely to have aortic stenosis, coronary artery disease, and mitral valve disease than those who had Bentall operations. The use of mechanical valves was equal in both groups (42% for aortic valve replacement and supracoronary replacement of the ascending aorta and 43% for the Bentall operation). Operative mortality was 5% for patients undergoing aortic valve replacement and supracoronary replacement of the ascending aorta and 4% for patients undergoing the Bentall operation (P = .45). Survival at 10 years was 57% ± 8% for patients undergoing aortic valve replacement and supracoronary replacement of the ascending aorta and 74% ± 4% for patients undergoing the Bentall operation (P = .04), but the type of operation had no effect on survival. Older age, moderate or severe left ventricular dysfunction, active endocarditis, previous cardiac surgery, and coronary artery disease were independent predictors of death. The freedom from reoperation at 10 years was 95% ± 5% for patients undergoing aortic valve replacement and supracoronary replacement of the ascending aorta and 94% ± 3% for patients undergoing the Bentall operation (P = .18). Reoperations were mostly because of tissue valve failure or endocarditis. The risk of valve-related complications was the same in both groups. No patient required reoperation for aortic root aneurysm after having aortic valve replacement and supracoronary replacement of the ascending aorta.
CONCLUSIONS: Aortic valve replacement and supracoronary replacement of the ascending aorta and the Bentall operation provide comparable long-term results. The Bentall operation is more appropriate for patients with aortic root abnormality and a dilated ascending aorta, whereas aortic valve replacement and supracoronary replacement of the ascending aorta is a perfectly acceptable operation for patients with aortic valve disease, normal or mildly dilated aortic sinuses, and a dilated ascending aorta.
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