This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
In patients with cirrhosis of the liver the site of venous thrombosis is 
Select and explain. 
A. Infra-hepatic inferior vena cava, B. Infra-renal inferior vena cava, C. Hepatic veins, D. Poal vein
C: Hepatic veins
Answer: C: Hepatic veins 
Explanation: In poal hypeension, Hepatic venous pressure gradient (HVPG) - It is done using a balloon catheter. Difference between free hepatic vein pressure and wedged hepatic vein pressure is HVPG. Normal HVPG is 8 mm Hg. It is more than 10 mm Hg in cirrhosis. Ref: SRB&;s manual of surgery,3 rd ed, pg no 547