Normal CVP is

.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