结论体外循环可诱导炎症反应致内皮细胞损伤或激活，并可致血管通透性增高。
Conclusion CPB can induce activation damage of vascular endothelial cell, and increase vascular permeability.
循环儿茶酚胺升高对心肌细胞产生直接的毒性作 用、增加膜通透性和心肌纤维化，这些作用可引起细胞死亡。
The increase of circulating catecholamines exerts direct toxic effect on cardiac myocytes, increases membrane permeability and myocardial fibrosis;
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