What is the primary reason IV tubing must be primed before connection?

Rationale: A. To remove air from the tubing is correct. Priming an IV line involves filling the tubing with IV fluid before connecting it to the patient to eliminate all air bubbles. This is crucial because air entering the bloodstream can cause an air embolism, which is potentially life-threatening, especially if it reaches the heart or lungs. Air embolism can lead to chest pain, dyspnea, hypotension, or cardiovascular collapse. Priming ensures that fluid flows continuously and safely into the vein. B. To warm the fluid is incorrect because priming does not warm IV fluids. If warmed fluids are required for patient comfort or therapeutic reasons (e.g., hypothermic patients or rapid transfusions), a fluid warmer or other warming device must be used. Priming is strictly a safety step to remove air, not to adjust temperature. C. To ensure sterility is incorrect because priming does not sterilize the tubing or fluid. Sterility is maintained by aseptic technique during preparation, handling, and connection of the IV. Priming does not replace proper infection control measures such as hand hygiene, using sterile gloves, or disinfecting ports. D. To improve flow rate is incorrect because while priming allows fluid to flow freely, the actual flow rate is determined by the IV pump or the roller clamp. Priming ensures safety and patency, not the speed of infusion.