Myocardial protection will be by intermittent antegrade and retrograde blood cardioplegia administered via the aortic root and the coronary sinus respectively. A single aortic cross-clamp will be used to complete distal and proximal anastamosis. Aortic venting will be used in all patients. At the end of surgery, patients will be transferred to the intensive care unit, where mechanical ventilation will be continued until local criteria for weaning and tracheal extubation will be met.