How to use central venous pressure measurements.

PURPOSE OF REVIEW: Central venous pressure is a very common clinical measurement, but it is frequently misunderstood and misused. As with all hemodynamic measurements, it is important to understand its basic principles.

RECENT FINDINGS: This analysis indicates that it is best to always consider the significance of central venous pressure in the context of the corresponding cardiac output. Even more important is the use of dynamic measures to interpret the meaning of the central venous pressure. This includes the hemodynamic response to fluid load, respiratory variations in central venous pressure, and even the change in central venous pressure with changes in the patient's overall status.

SUMMARY: The clinical application of central venous pressure measurement requires a good understanding of the concept of the interaction of the function of the heart with the function of the return of blood to the heart.