Which two substances should be used for device locking according to policy?

Device locking refers to the practice of placing a solution in a vascular access device to maintain patency and prevent clot formation. This procedure is vital for ensuring the longevity and effectiveness of the device while minimizing complications.

Heparin is an anticoagulant that is commonly used for device locking due to its ability to prevent clot formation in the vascular access device. By inhibiting thrombus development, heparin helps to maintain blood flow and prolong the life of the catheter or IV line. This is especially crucial for central venous catheters and other long-term access devices.

Saline is often used as a flushing solution to clear the device of blood and ensure that no residual medication or blood can lead to clotting or blockage. It is isotonic and safe for IV use, making it an ideal choice for use with heparin.

The combination of heparin and saline is frequently endorsed in clinical guidelines for device locking, as it provides both patency maintenance and a degree of anticoagulation that is advantageous in preventing thrombotic events.

Other substances listed in the available choices, such as glucose, water, alcohol, or citrus, do not provide the same therapeutic benefits or safety profile in the context of locking devices. Therefore, the pairing of