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Ann Thorac Surg 2001;72:1497-1501
© 2001 The Society of Thoracic Surgeons

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Original article: cardiovascular

Influence of technique of coronary artery implantation on long-term results in composite aortic root replacement

^a Clinic for Cardiovascular Surgery C, Hôpital Cardiologique Louis Pradel, Université Claude Bernard, Lyon, France

Accepted for publication June 22, 2001.

* Address reprint requests to Dr Ninet, Clinic for Cardiovascular Surgery C, Hôpital Cardiologique Louis Pradel, B.P. Lyon-Montchat, 69394 Lyon Cedex 03, France
e-mail: jean.ninet{at}chu-lyon.fr

Background. Long-term results after composite graft aortic root replacement may depend on the insertion technique. The aim of this study is to assess the influence of the technique of coronary artery implantation on long-term results in composite aortic root replacement.

Methods. One hundred fifty consecutive patients (mean age, 55 years; 119 men) with different disorders of the ascending aorta who underwent aortic root replacement with a composite graft prosthesis between January 1985 and December 1999 were retrospectively studied. Thirteen patients had previously undergone cardiovascular surgery. The open button technique was performed in 65 patients (43.3%, group 1) and the inclusion technique in 85 patients (56.7%, group 2). Mean follow-up was 70.5 months. Surgery was elective in 110 procedures (73%).

Results. Global actuarial survival was 76.1% ± 4.3% for group 1 and 73.7% ± 3.9% for group 2 at 10 years (p = 0.22). Freedom from reoperation excluding early deaths was 81% ± 3% for group 1 and 86% ± 2.2% for group 2 at 10 years (p = 0.62). Group 2 demonstrated a statistically significantly higher occurrence of pseudoaneurysm formation versus group 1 (p = 0.04).

Conclusions. Composite graft aortic root replacement is a safe and effective therapy for proximal aortic aneurysm and dissection, resulting in good early and long-term results irrespective of the anastomotic technique. However, the open button technique seems to avoid late false aneurysm formation at the anastomotic sites.

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