What does blood return signify when using a CVAD?

• A. Increased blood pressure
• B. Improper catheter placement
• C. Patency of the catheter and correct placement
• D. Risk of infection

Answer: (C)

When blood return is observed during the use of a Central Venous Access Device (CVAD), it signifies the patency of the catheter and confirms its correct placement within the central venous system. This is crucial because the ability to aspirate blood means that the catheter is open and functioning appropriately, allowing for the administration of medications, fluids, and the drawing of blood samples. Proper positioning is important as it ensures that the catheter tip resides within a central vein, which is essential for effective blood flow and to prevent complications that could arise from incorrect placement. Thus, a positive blood return is an important indicator that the CVAD is correctly positioned and functioning as intended.