Risk factors for hospital death after surgery for type A aortic dissection

Antoine Legras, Matthieu Bruzzi, Kuniki Nakashima, Marie-Line Hillion, Daniel Loisance, Matthias Kirsch
Asian Cardiovascular & Thoracic Annals 2012, 20 (3): 269-74
This study was undertaken to identify perioperative risk factors for hospital death in patients undergoing surgery for acute type A aortic dissection. Between 2000 and 2009, 101 consecutive patients underwent emergency surgery for acute type A aortic dissection. Four patients died before institution of cardiopulmonary bypass or completion of the procedure. In the remaining 97 (68 men; mean age, 63.4±16.7 years), proximal repair was performed using ascending aortic replacement with valve re-suspension in 52 (53.6%) and composite valve graft replacement in 44 (45.4%). Distal repair required hemi- or total arch replacement in 42 (43.3%) patients. Overall hospital mortality reached 25.8% (25/97 patients). Logistic regression analysis revealed that advanced age, location of an intimal tear in the arch or more distally, and preoperative coronary malperfusion were significant independent risk factors for hospital death. No procedure-related variables were significant risk factors. Current hospital mortality in patients undergoing emergency surgery for acute type A aortic dissection remains high, but seems to be mainly determined by preoperative variables. More aggressive proximal or distal repairs were not associated with increased mortality.

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