目的调查20例普胸外科手术后感染患者的临床情况。

Objective To investigate clinical setting of postoperative infection in chest surgery patients.

目的探讨抑肽酶对胸外科围手术期的凝血-纤溶系统的影响。

Objective To study aprotinin 's effect on blood coagulation and fibrinolysis system.