Medications and compatible fluids can be added to a primary IV line using the

A. roller clamp: The roller clamp is used to regulate or stop the flow rate of IV fluids, not to introduce medications or additional fluids. It does not provide access to the IV line for injection purposes. B. slide clamp: The slide clamp is primarily used to completely occlude or temporarily stop IV flow. It is not designed for medication administration or fluid addition to the IV line. C. drip chamber: The drip chamber is used to monitor and control the drip rate of the IV fluid. Medications should never be injected directly into the drip chamber, as this bypasses proper safety and dosing procedures. D. Injection port: The injection port provides safe and sterile access to the IV tubing for administering medications or compatible fluids. It allows the nurse to introduce substances directly into the primary IV line using a syringe.