Final answer:
Central venous pressure is measured in the right atrium, which indicates the heart's efficiency in pumping blood and is crucial in critical care.
Step-by-step explanation:
Central venous pressure (CVP) is measured in the right atrium of the heart. This measurement reflects the amount of blood returning to the heart and the ability of the heart to pump blood into the arterial system. During the measurement process, healthcare professionals use catheters inserted into the venous system, threading them to the appropriate location to transmit pressures to an external measuring device. This measurement is crucial as it helps in assessing heart function, especially under critical care situations.