Conclusions: ECC led to EC excessive activition, injury and dysfunction.Aprotinin attenuated the process via protecting EC function.

• 讨论：，在心脏停搏下手术时，内皮细胞功能与冠脉血管的张力调节密切相关，抑肽酶可以保护主动脉阻断温血灌注中内皮细胞的调节功能。