<prompt> Virchows triad includes all of the following exceptVenous stasisEndothelial injury to veinsBlood HypercoagulabilityVenous thrombosis  <response>: D Venous thrombosis Virchows triad refers to three primary influences that predispose to thrombus formation. This triad should be the cornerstone for the assessment of risk factors for deep venous thrombosis. This includes Endothelial injury Stasis or turbulence of blood flow Blood hypercoagulability These factors may act independently or they may combine to cause thrombus formation. Note that endothelial integrity is the single most important factor. Injury to endotlielial cells can affect local blood flow or coagula bility Some important Points on DVT: Homans sign - Caif tenderness on forced ankle dorsiflexion. Phlegmasia alba do lens - Painful white leg Phlegmasia cerulea dolens - Painful blue leg Moses Sign - Calf tenderness on direct pressure on the calf. Pratts Sign - Calf tenderness on squeezing the calf from the sides. Duplex ultasound is the diagnostic modality of choice in deep vein thrombosis. 