<prompt> Normal CVP is0-3 cm5-8 cm12-15 cm20 cm  <response>: .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 