Why is it important for a nurse to prevent air from entering IV tubing?

• A. Air in tubing could cause embolus
• B. It improves infusion
• C. It has no effect
• D. It warns of infection

Answer: (A)

Preventing air from entering IV tubing is crucial because air in the bloodstream can form an air embolus that blocks blood vessels and disrupts tissue perfusion. When air is introduced into a vein, it can travel to the heart and lungs, potentially causing a pulmonary air embolism and hemodynamic instability. Even small amounts can be dangerous if infused rapidly or via larger veins, with possible symptoms like chest discomfort, shortness of breath, or hypoxia. That’s why nurses prime lines to remove all air, ensure syringes and IV bags are free of air, and stop the line immediately if air is seen. The other options don’t address this immediate risk to circulation.