予防できる下肢のむくみと肺塞栓症

Virchow triad（（１）blood stasis（, ２）changes in the vessel wall, and（３）hypercoagulability）are the major factors responsible for the development of venous thrombosis. This venous thrombosis leads to the pathogenesis of acute pulmonary thrombo-embolism which is known as“Economy Class Syndrome”. A series of pathogenesis is widely recognized as“Venous thrombo-embolism syndrome”. This syndrome occurs suddenly, and occasionally leads to fatal event. So the basic principle of treatment for this syndrome is to prevent deep vein thrombosis（DVT）. The prevention consists of three crucial treatments. Firstly, to recognize high-risk patients of DVT is initial step. Secondary, anticoagulation, elastic stocking and foot pump are well established treatments. Thirdly, venous filter is applicable for the most highest-risk patients. In this review, we would like to introduce the latest knowledge for“Venous thrombo-embolism syndrome”.