Jugular Venous Pressure Measurement (JVP)
The technique for examination for CVP (central venous pressure)
Patient reclining with head elevated 45 °
Measure elevation of neck veins above the sternal angle (Lewis Method).
Add 5 cm to measurement since right atrium is 5 cm below the sternal angle.
Normal CVP <= 8 cm H2O
Light should be tangential to illuminate highlights and shadows.
Neck should not be sharply flexed.
Using a centimeter ruler, measure the vertical distance between the angle of Louis (manubrio sternal joint) and the highest level of jugular vein pulsation. A straight edge intersecting the ruler at a right angle may be helpful.
If the internal jugular vein is not detectable, use the external jugular vein. The internal jugular vein is the preferred site.