据研究 ,在胎儿期和儿童期的被动吸烟能够降低激活的组织纤维蛋白溶解酶原活化剂活性 ,并可使遗传性低组织纤维蛋白溶解酶原活化剂活性更加降低 ,从而引起低纤维蛋白溶解 ,使股骨头静脉易于形成血栓而闭塞 ,导致静脉高压、缺氧性骨坏死、Perthes病。本项对 39例无主动吸烟史 Pe It has been reported that passive smoking during fetal and childhood can reduce the activity of activated tissue plasminogen activator and decrease the activity of hereditary low-tissue plasminogen activator, resulting in low fibrinolysis , The femoral head vein thrombosis easily lead to occlusion, leading to hypertension, hypoxia osteonecrosis, Perthes disease. The 39 cases of active smoking history Pe