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Ann Thorac Surg 1998;66:779-784
© 1998 The Society of Thoracic Surgeons
a Department of Cardiac Surgery, University of Torino, Torino, Italy
b Department of Cardiology, University of Torino, Torino, Italy
Accepted for publication April 6, 1998.
Address reprint requests to Dr Pansini, Via Vittorio Veneto 25, 10028 Trofarello, (TO), Italy
Background. Morbidity and mortality of emergency repair of type A dissecting aneurysms of the aorta are high. This is an attempt to investigate the risk determinants of early and late results.
Methods. A series of preoperative and operative variables were retrospectively collected from the clinical records of 291 patients operated on between January 1, 1979, and December 31, 1995. Risk factors for surgical death were investigated with univariate analysis and stepwise logistic regression. Follow-up was conducted between December 1995 and February 1996. Analysis of late results was conducted by means of actuarial survival curves (life method). After removing the surgical deaths, risk factors for late deaths were analyzed by a Cox model.
Results. The in-hospital mortality rate was 36.1%. Significant independent determinants of operative or early death were preoperative shock, preoperative neurologic impairment, operation before 1986, perioperative bleeding, and prolonged clamping time. The 10-year survival rate was 36.9% ± 4.4%. Twenty-six patients required repeat operation. The long-term prognosis was significantly worse in patients who needed reoperation.
Conclusions. Growing awareness of this disease and quicker diagnosis have increased the number of patients with acute dissection of the ascending aorta who are taken early to operation. This new challenge must be met by better preoperative support and intraoperative monitoring, and by surgical techniques that focus on lowering the rate of late complications, for which lifelong follow-up must be provided.
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