What is the primary purpose of heparinized saline when used with IV catheters?

Heparinized saline is primarily used with IV catheters to maintain catheter patency. It is a solution that combines saline with heparin, an anticoagulant that helps prevent the formation of blood clots within the catheter. By reducing the risk of clotting, heparinized saline ensures that the catheter remains open and functional for the administration of fluids or medications over an extended period. This is particularly important in clinical settings, where maintaining unobstructed access to the vascular system is crucial for patient care.

While other options, like reducing inflammation or preventing infection, are important aspects of IV therapy, they are not the primary function of heparinized saline. The main goal is to keep the catheter open, allowing for continuous or intermittent use without requiring frequent replacement due to blockages from clot formation.