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The Journal of Thoracic and Cardiovascular Surgery, Vol 98, 675-682, Copyright © 1989 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Surgical treatment of the ascending aorta. Fourteen years' experience with 83 patients

PJ Raudkivi, JD Williams, JL Monro and JK Ross
Wessex Cardiothoracic Centre, Southampton General Hospital, England.

Between December 1972 and December 1986, 83 patients with aneurysmal disease (n = 37) or dissection (n = 46) involving the ascending aorta underwent a variety of operations, including composite value-graft repairs (n = 39), separated replacements of the aortic valve and ascending aorta (n = 18), resuspension and graft replacement of the ascending aorta (n = 9), graft replacement of the ascending aorta only (n = 8), homograft root replacement (n = 3), aortic valve replacement with aortorrhaphy (n = 3), aotorrhaphy alone (n = 2), and use of a sutureless intraluminal prosthesis (n = 1). The inclusion method was used in nine patients. The hospital mortality rate was 10% for patients with annuloaortic ectasia, 21% (70% confidence interval 13% to 30%) for acute dissection, and 18% (70% confidence interval 14% to 22%) for the entire group. Logistic regression analysis showed age and cumulative bypass time to be significant for hospital death. The estimated 5-year survival rates are 69.5% +/- 7.2% and 67.0% +/- 9.0% and 10-year estimates are 34.6% +/- 10.6% and 61.4% +/- 9.8% for dissection and aneurysm, respectively. Patient survival was related to differing pathology and type of operation, and log-rank testing showed no differences at the 5% level. Attrition (17 late deaths) was mostly due to left ventricular dysfunction, myocardial infarction, or aneurysmal disease in ungrafted aorta. Actuarial freedom from thromboembolism in patients with prosthetic valves is 92.0% +/- 4.0% and 83.5% +/- 6.8% at 5 and 10 years. Freedom from all late graft and cardiac complications is 72.5% +/- 9.1% and 48.8% +/- 13.1% at 5 and 10 years for aneurysmal disease and 79.1% +/- 7.3% and 67.3% +/- 9.9% at 5 and 10 years for dissection. Reoperation in nine patients was required for pseudoaneurysms (n = 3), other aortic aneurysms (n = 3), persistent aortic regurgitation (n = 1), and obsolescent valve prosthesis (n = 2). Thus hospital mortality does not seem to be significantly related to the type of operation used for pathologic conditions of the ascending aorta unless cumulative bypass time exceeds about 2 hours. Many nonfatal late complications are associated with a prosthetic valve, but late death is due primarily to cardiac causes and residual disease in other parts of the aorta.

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