Objective:To evaluate the myocardial protective effects of HTK solution on immature and cyanosed myocardium in cardiac operation,through comparison with ST.

• 目的:通过比较HTK液和冷晶体停搏液在法乐氏四联症患儿心脏手术中的心肌保护效果,评估HTK液对紫绀型未成熟心肌的保护作用。