What is the purpose of using heparin flushes in IV therapy?

Heparin flushes are used in IV therapy primarily to prevent clot formation in the catheter. This is crucial because a clot can obstruct the catheter, making it ineffective for delivering fluids or medications. When IV catheters are placed for extended periods, the risk of thrombus formation increases due to stagnant blood within the catheter. Heparin, an anticoagulant, helps to keep the blood from clotting inside the catheter, ensuring that it remains patent and functional for the duration of its use. This practice is vital in maintaining the integrity and usability of IV access, optimizing patient care by reducing potential complications such as catheter occlusion or the need for catheter replacement.

While the other options mention aspects relevant to IV therapy, they do not reflect the specific purpose of heparin flushes. Increasing fluid delivery rate points to adjusting flow rates rather than the effect of heparin. Maintaining patient hydration concerns the overall fluid balance, which is not directly related to heparin use. Administering medication involves active delivery of treatment, while heparin flushes serve more as a preventive measure for maintaining catheter function.