Objective To investigate theories of liver injury,protective effects of ulinastatin (UTI) on liver and give the clinical proof for the use of ulinastatin 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保护作用,为乌司他丁在体外循环心脏手术中的应用提供临床依据。