When the Water Manometer Is Used to Measure the CVP

Multiple Choice

When the water manometer is used to measure the CVP, the reading usually is taken at:

A) peak inspiration with the patient in the semi-Fowler position.
B) the end of expiration with the patient in the supine position.
C) the end of inspiration with the head of the bed elevated 45 degrees.
D) any time during inspiration or expiration with the head of the bed elevated 45 degrees.