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Ann Thorac Surg 2005;79:499-504
© 2005 The Society of Thoracic Surgeons

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Original article: Cardiovascular

The Ross Operation: An Evaluation of a Single Institution's Experience

Department of Cardiothoracic Surgery, St. Antonius Hospital, Nieuwegein, the Netherlands

Accepted for publication July 29, 2004.

^* Address reprint requests to Dr Settepani, Department of Cardiothoracic Surgery, St. Antonius Hospital, Nieuwegein, PO Box 2500, 3430 EM Nieuwegein, the Netherlands (E-mail: sieben2000{at}yahoo.com).

BACKGROUND: Pulmonary autograft aortic root replacement was used in adults. Risk factors for aortic valve incompetence (AI) and pulmonary homograft valve stenosis are identified.

METHODS: From February 1991 through May 2003, 103 patients, with a mean age of 35.2 ± 9.5 years, underwent aortic root replacement with the pulmonary autograft. Annulus reinforcement (reduction annuloplasty or use of root ring) was carried out in 45 patients. In all but 1 patient, the right ventricular outflow tract was reconstructed with a cryopreserved pulmonary homograft. Mean follow-up duration was 6.0 ± 2.8 years (range 0.3 to 11 years).

RESULTS: There were no hospital deaths. Overall patient survival was 98.9 ± 1.0% at 1 year and 97.3 ± 1.9% at 10 years. Autograft function follow-up resulted in 5 patients requiring reoperation for aortic incompetence. The univariate risk factors for aortic incompetence at discharge and during follow-up were respectively annulus reinforcement (p = 0.05) and bicuspic aortic valve (p = 0.05). Reoperation for homograft failure occurred in 1 patient. During follow-up, 24 patients (25.5%) developed homograft stenosis (gradient > 20 mm Hg). Univariate analysis indicated the diameter of the homograft (p = 0.001) as factor associated with stenosis during follow-up. Cox regression identified smaller diameter of the homograft (p = 0.001) and older age of donor (p = 0.002) as independent risk factor for the development of homograft stenosis.

CONCLUSIONS: The Ross operation can be performed with few complications. Although both the aortic autograft and the pulmonary homograft have limited durability, this has not yet resulted in considerable reoperation rates and associated morbidity and mortality.

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