Which item is essential to include in IV tubing to prevent backflow and air contamination?

• A. One Way Filter
• B. Y-Connector
• C. Infusion Pump
• D. Clamps

Answer: (A)

Unidirectional flow with air control in IV tubing is essential to prevent backward movement of blood or air into the line. A one-way filter in the IV segment acts as a check valve and inline barrier, allowing fluid to move toward the patient while blocking any backward flow or air from traveling upstream. This minimizes air contamination and the risk of air embolism, and the filter also helps trap particulates. The other items don’t serve this protective role: a Y-connector simply joins lines, an infusion pump regulates flow rate but doesn’t stop backflow or air entry, and clamps only control flow and don’t provide automatic backflow prevention.