This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
[{'content': 'Normal CVP is \nSelect and explain. \nA. 0-3 cm, B. 5-8 cm, C. 12-15 cm, D. >20 cm', 'role': 'user'}, {'content': 'Answer: B \nExplanation: .CENTRAL VENOUS PRESSURE (CVP) It is a method to measure the right atrial pressure by placing a venous catheter (20 cm) into the SVC. Commonly for CVP monitoring, a venous catheter is passed through internal jugular vein or infraclavicular subclan vein to the SVC (used for TPN purpose).Normal value is 2-10 cm of saline. If less than 2 cm, more fluid is infused. If more than 10 cm, fluid infusion should be restricted. ref:SRB&;s manual of surgery,ed 3,pg no 96', 'role': 'assistant'}]