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。
Objective:To evaluate the myocardial protective effects of HTK solution on immature and cyanosed myocardium in cardiac operation, through comparison with ST.
实验组患者心脏冷停搏液中加入生脉注射液。
In the experimental group, the Shengmai injection was added to the reformative Thomas solution.
结论：氧合血心脏停搏液持续灌注比冷晶体心脏停搏液间断灌注在心肌保护方面具有明显的优越性，是一种较好的心肌保护方法。
Conclusion: The continuous warm oxygenated blood cardioplegia is a good method for myocardial protection, and is superior to intermittent cold crystalloid cardioplegia.
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