Following postoperative outcome , i.e. cardiac defibrillation after removal of aortic cross clamp during the period of rewarming , demand for intra-aortic balloon pump ( IABP ) , demand for antiarrhythmic before leaving the operation room , postoperative creatine kinase-myocardial band ( CK-MB ) level ( at 1h , 12h , 24h , and 48h after surgery ) , postoperative serum creatinine level on first postoperative day , postoperative ejection fraction ( EF ) on third postoperative day , in-hospital mortality , and one-year mortality were noted , prospectively .