This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Venous Disorders, Subject name: Surgery
Virchows triad include all the following except 
Select and explain. 
A. Stasis of blood, B. Abnormalities of venous channels, C. Hypercoagulability, D. Endothelial damage
B: Abnormalities of venous channels
Answer: B: Abnormalities of venous channels 
Explanation: Ans) b (Abnormalities...) Ref Bailey 25th ed pg 936Virchow described three factors important in the development of VENOUS THROMBOSIS.1) Changes in the vessels wall (endothelial damage)2) Stasis, which is diminished flow through the veins.3) Coagulability of blood (thrombophlebitis)So answer is abnormalities of venous channels which is not included in Virchows triad.Risk factors for venous thromboembolism(Very important) Refer Table (Bailey 25th edpg 936)