Chemotherapy Biotherapy Certification ONS Practice Testq

When accessing a catheter, what must be performed after using the port?

1. A saline flush

2. A heparin flush

3. A blood draw

4. A numbing injection

The correct answer is: A heparin flush

When accessing a catheter, performing a heparin flush after using the port is important because it helps maintain catheter patency and prevent the formation of clots within the catheter lumen. Heparin, an anticoagulant, reduces the risk of thrombus formation, ensuring that the catheter remains open for future access. While saline flushes are commonly used as well to clear the line after medication administration, the specific practice of using a heparin flush is typically recommended for maintaining long-term catheters, especially in patients who require frequent access. This is particularly relevant in chemotherapy settings where the risk of clot formation can be elevated due to medication viscosity or irritation. Other options, such as a blood draw or a numbing injection, are not standardized practices for maintaining catheter patency post-access. A blood draw is generally performed for specific testing purposes and does not serve the primary function of preventing clots, while a numbing injection is not necessary for catheter management unless required for patient comfort during a specific procedure.