Thursday October 18, 2007
2 ways of CVP measurement

Central Venous Pressure can be measured in 2 units - cm H2O and mm Hg, depending on which system is used. CVP in ICUs is usually measured in mmHg via electronic monitor.

The conversion formula of CVP in cm H2O to mm Hg is:

10 mm H20 = 7.5 mm Hg
Or to be precise
1 mm Hg = 1.36 cm H2O

Normal CVP is 2-8 mmHg and 5 - 10 cmH2O


Here is one nice reference article on CVP, Central Venous Pressure monitoring ( Sheldon Magder, McGill University Health Centre, Division of Critical Care, Montreal, Canada - Current Opinion in Critical Care 2006, 12:000–000)

Below is the picture of manometer way of CVP measurement

Click here to go to full reference article - Measuring Central Venous Pressure from Deptt. of Anaesthesiology, Univ. of Hong Kong.