目的：报道7例慢性肺血栓栓塞症患者肺动脉血栓内膜剥脱术外科治疗体会。
Aim: to summarize 7 patients undergoing pulmonary thromboendarterectomy (PTE) in Peking Union hospital and Chaoyang hospital.
目的探讨下腔静脉滤器置入术预防肺动脉栓塞的临床效果。
Objective To study the effect of the filter of inferior vena cava for prevention of fatal pulmonary embolism formation.
结论：下腔静脉过滤器植入术是一种安全、有效、可预防肺动脉栓塞发生的临床措施。
Conclusion: Implantation of vena cava filter is safe and effective in prevention of pulmonary embolism.
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