Methods : Continuous cold blood cardioplegia ( CCBC ) with lower-potassium was induced via coronary sinus at a perfusion rate of 40 ~ 60 ml / min from an altitude of 55 ~ 70 cm .
方法：在心脏停搏后以55～70cm高度的落差经冠状静脉窦逆行持续灌注低钾冷血停搏液，流量在40～60ml／min。
ccbc