Background: Surgery for thoracic aortic aneurysm is a severe operation, which causes important changes in hemodynamic and metabolism of patient. Preoperative evaluation, anesthetic, cardiopulmonary bypass and surgery specific techniques are important in improving patient's outcome. Methods: A retrospective study was performed over all cases under general anaesthesia and cardiopulmonary bypass with hypothermia, cerebral perfusion and subtotal circulatory arrest for thoracic aortic aneurysm surgical procedure during 2 years (2008 to 2009) at Chợ Rẫy Hospital.