A CVP reading that indicates low filling pressure is best represented by which value?

A CVP reading that indicates low filling pressure is best represented by which value?

• A. 8 mmHg
• B. 6 mmHg
• C. 3 mmHg
• D. 1 mmHg

Answer: (D)

Central venous pressure reflects the preload of the right heart by measuring the pressure in the central veins near the right atrium. Normal CVP is above zero and in the mid range, so a reading that truly shows a low filling pressure would be at the very low end of the scale. Among the options, the smallest value best represents this state, signaling reduced venous return and potential hypovolemia. The other readings are higher and would indicate normal or increased preload rather than a low filling pressure.

Central venous pressure reflects the preload of the right heart by measuring the pressure in the central veins near the right atrium. Normal CVP is above zero and in the mid range, so a reading that truly shows a low filling pressure would be at the very low end of the scale. Among the options, the smallest value best represents this state, signaling reduced venous return and potential hypovolemia. The other readings are higher and would indicate normal or increased preload rather than a low filling pressure.