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J Thorac Cardiovasc Surg 2004;127:1381-1387
© 2004 The American Association for Thoracic Surgery

Surgery for acquired cardiovascular disease

Long-term durability of resection and end-to-end anastomosis for ascending aortic aneurysms

^a Thoracic and Cardiovascular Surgery Department, University Hospital Caen, Caen, France
^b Department of Surgery, University Hospital Siena, Siena, Italy

Received for publication September 20, 2003; revisions received October 29, 2003; accepted for publication November 4, 2003.

^* Address for reprints: Massimo Massetti, MD, Thoracic and Cardiovascular Surgery Department, University Hospital, 14033 Caen, France
massetti-m{at}chu-caen.fr

BACKGROUND: Ascending aortic aneurysms with normal sized sinotubular junction are generally treated by resection of the dilated aorta and replacement with tubular graft. Aortic resection and direct end-to-end anastomosis has been applied to repair aortic coarctation, interrupted aortic arch, and traumatic aortic rupture. No data exist regarding the long-term durability of this approach in ascending aortic aneurysms. The aim of this case-control study was to illustrate the durability of this operation by presenting our entire experience and the long-term follow up of a cohort of 34 patients who underwent ascending aortic aneurysm resection and primary end-to-end anastomosis between January 1990 and March 2003 in Caen University Hospital (Caen, France).

METHODS: The mean age of patients was 61.5 ± 12.5 years, and there were 18 male and 16 female patients. The operative technique included extensive mobilization of the arch, supra-aortic trunks, and inferior vena cava to enable approximation of the aortic ends, thus avoiding tension on the suture lines. Associated aortic valve replacement was performed in 27 patients; mechanical valves were used in 19. A bicuspid aortic valve was present in 9 patients; in 3 cases the valve was regurgitant. Aortic valve regurgitation was present in a total of 7 patients. Patients were followed up at regular intervals; total follow-up was 2187 patient-months, with a median follow-up time of 72 months per patient (25th-75th percentile 10.5-102.7 months).

RESULTS: One patient died 10 days after the operation of aortic rupture related to suture infection caused by mediastinitis. Late deaths occurred in 3 patients, who died 12, 62, and 71 months after the operation, but none of these deaths were attributable to late aortic repair failure. No patient in this series required reoperation, including patients with aortic regurgitation or bicuspid aortic valve. Follow-up was 91.1% complete at the closing date of April 1, 2003. The Kaplan-Meier estimate of survival for all patients was 120.4 months (95% confidence interval 105.1-135.7 months). The median of preoperative maximal aortic diameter was 55.1 mm (range 50.3 to 67.5 mm, 25th-75th percentile 50.5-56.8 mm). The median immediate postoperative diameter was 40.3 mm (range 33.4-46.4 mm, 25th-75th percentile 37.2-42.0 mm, P < .0001 relative to preoperative diameter), and the median length of the resected aortic segment was 52 mm (range 48-76 mm, 25th-75th percentile 50.1-66.4 mm). The median decrease of aortic diameter was 24.9 mm (range 8.9-32.6 mm, 25th-75th percentile 18.2-26.6 mm).The median aortic diameter at the end of the follow-up was 41.0 mm (range 34.6-46.1 mm, 25th-75th percentile 37.0-43.2 mm, P = .6 relative to immediate postoperative diameter).

CONCLUSIONS: Ascending aorta aneurysm resection and primary end-to-end anastomosis provides effective long-term outcome and in selected cases represents a good alternative to aortic interposition grafting. Aortic regurgitation and bicuspid aortic valve do not represent a contraindication for this treatment

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