If an IV catheter is not used continuously, how often should it be flushed with heparinized saline?

The recommendation to flush an IV catheter with heparinized saline every 8 to 12 hours when it is not in continuous use is grounded in the goal of maintaining catheter patency. When an IV catheter is left in place without continuous fluid administration, there is a risk of blood clotting at the catheter tip or within the lumen. Flushing with heparinized saline helps to prevent clot formation by keeping the catheter clear of blood and ensures that it can be accessed easily when needed.

Flushing every 8 to 12 hours strikes a balance that minimizes the risk of occlusion while also being a practical approach for routine maintenance, ensuring the catheter remains patent without unnecessary flushing that may not be needed at shorter intervals. Regular flushing during this window helps to maintain the function and integrity of the catheter for future use.