CAMRT Radiography Practice Exam

What is the best location for a Central Venous Pressure (CVP) line?

1. Brachiocephalic vein or Superior Vena Cava

2. Femoral vein

3. Internal jugular vein

4. Subclavian vein

The correct answer is: Brachiocephalic vein or Superior Vena Cava

The best location for a Central Venous Pressure (CVP) line is at the brachiocephalic vein or the superior vena cava. This is because the CVP line needs to terminate close to the right atrium of the heart to accurately measure central venous pressure, which reflects the volume status and venous return to the heart. Placing the CVP line in the brachiocephalic vein or superior vena cava provides a large-bore access that is less likely to become obstructed and allows for better monitoring of hemodynamics due to its proximity to the heart. This position facilitates accurate pressure readings and efficient fluid administration or medication delivery, making it ideal for critically ill patients requiring frequent monitoring. While the internal jugular vein and subclavian vein are also common sites for CVP line placement and can provide good access, the superior vena cava is generally preferred for its direct approach to the heart and for minimizing the risk of complications associated with the other locations. The femoral vein, while sometimes used, is less favorable due to its higher risk of infection and limited anatomical access to the central circulation compared to the thoracic locations.