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: Anatomy
[{'content': 'Vascular inflow occlusion of the liver is by \nSelect and explain. \nA. Clamping the hepatic aery, B. Occluding the poal vein, C. Clamping the hepatic veins, D. The pringle maneuver', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pringle Maneuver (Total inflow occlusion) Total clamping of the hepatic pedicle, by placing an atraumatic clamp across the foramen of Winslow Appropriate sized vascular clamp or loop snare easily controls hemorrhage from either the poal vein or the hepatic aeries Inflow occlusion durations of upto 39 minutes can be tolerated safely in cirrhotic livers and possibly upto 60 minutes in early disease If Prolonged occlusion is required, intermittent clamping can be used with repeated clamping of 10-20 minutes duration, each followed by 5 minutes declamping Ref: Sabiston 20th edition Pgno : 439', 'role': 'assistant'}]