What factor increases the risk of CVAD thrombosis?

What factor increases the risk of CVAD thrombosis?

• A. Frequent use of the CVAD for blood draws
• B. Prolonged catheter dwell time and inadequate flushing
• C. A single infrequent use of the catheter
• D. Age of the patient

Answer: (B)

Prolonged catheter dwell time combined with inadequate flushing significantly increases the risk of thrombosis in Central Venous Access Devices (CVADs). Over time, the presence of a CVAD can lead to the formation of a clot, especially if the catheter is not regularly flushed to maintain patency. When a catheter remains in place for an extended period, it creates a surface that can be colonized by platelets and fibrin, contributing to thrombus formation. Inadequate flushing can result in stagnant blood within the catheter, further promoting clot development due to the lack of flow and movement. Therefore, both prolonged dwell time and insufficient flushing practices are critical factors that elevate this risk, making this answer the most appropriate one.

Prolonged catheter dwell time combined with inadequate flushing significantly increases the risk of thrombosis in Central Venous Access Devices (CVADs). Over time, the presence of a CVAD can lead to the formation of a clot, especially if the catheter is not regularly flushed to maintain patency. When a catheter remains in place for an extended period, it creates a surface that can be colonized by platelets and fibrin, contributing to thrombus formation. Inadequate flushing can result in stagnant blood within the catheter, further promoting clot development due to the lack of flow and movement. Therefore, both prolonged dwell time and insufficient flushing practices are critical factors that elevate this risk, making this answer the most appropriate one.