Objective:To investigate the effects of ulinastatin (UTI) on liver in cardiopulmonary bypass during open heart surgery.

• 目的:探讨乌司他丁(ulinastatin,UTI)在体外循环(cardiopulmonary bypass,CPB)心脏手术期间对肝脏的作用,为乌司他丁在体外循环心脏手术中的应用提供临床依据。