Chemotherapy Biotherapy Certification ONS Practice Testq

What is the purpose of a heparin flush in catheter use?

1. To cleanse the catheter

2. To prevent clot formation

3. To enhance medication absorption

4. To reduce infection risk

The correct answer is: To prevent clot formation

A heparin flush is primarily utilized to prevent clot formation in vascular catheters. Heparin is an anticoagulant that reduces the likelihood of clotting within the catheter lumen, ensuring that the catheter remains patent and functional for administering medications or fluids. The flush helps to maintain blood flow and reduces the risk of thrombus formation, which could obstruct the catheter and compromise patient care. While other factors such as cleansing the catheter, enhancing medication absorption, and reducing infection risk are important considerations in catheter management, they are not the primary purpose of a heparin flush. The flush focuses specifically on ensuring that blood does not coagulate within the catheter, which is crucial for its continuous and effective use.