Which part of the catheter is inserted into the vein during IV therapy?

The intravenous catheter or cannula is the part that is specifically designed to be inserted into the vein during IV therapy. This component is made to create a stable access point for delivering fluids, medications, or nutrition directly into the bloodstream. The catheter allows for long-term access, reducing the need for repeated needle sticks and minimizing discomfort for the patient.

The other components mentioned do not serve this function. The drip chamber is part of the administration set and is used to control the flow of fluid while allowing healthcare providers to monitor the volume of fluid being infused. The administration set itself includes the tubing through which the IV fluids are delivered but does not penetrate the vein. The needle protector is a safety feature that covers the needle after use, ensuring the sharp end doesn’t pose a risk of injury or contamination, but it is not involved in the insertion into the vein.

Understanding these distinctions is crucial for safe and effective IV therapy practice.