How do you flush a med port catheter?

To flush a med port catheter, first gather the necessary supplies, including a sterile syringe filled with saline. Clean the port's access site with an alcohol swab, then attach the syringe to the port. Gently inject the saline while ensuring there is no resistance, and then withdraw the syringe to check for blood return, confirming patency. Finally, disconnect the syringe and clean the port site again if needed.