Which type of enteral system has higher risk for contamination due to nursing manipulation?

• A. Closed System
• B. Semi-Closed System
• C. Open Systems
• D. None of the Above

Answer: (C)

The level of contamination risk in enteral feeding is driven by how much the system is opened and handled during use. An open system keeps the feeding path exposed to air and touched during preparation and administration, so each manipulation by nursing staff introduces opportunities for bacteria to enter. Closed systems stay sealed from start to finish, minimizing exposure and thus lowering the contamination risk. Semi-closed systems provide some protection but still require handling that can introduce microbes, making their risk intermediate. Therefore, the type with the highest risk of contamination due to nursing manipulation is the open system.