Certified Endoscope Reprocessor (CER) Practice Test 2025 - Free Endoscope Reprocessing Practice Questions and Study Guide

Question: 1 / 400

What is crucial for ensuring the disinfectant can access the inside of the lumens during HLD?

Keeping the lumens closed

Removing any obstructions

Keeping the lumens open

To ensure that the disinfectant can effectively access the inside of lumens during high-level disinfection (HLD), it is critical to keep the lumens open. Open lumens allow the disinfectant to flow freely through the entire length of the instrument, ensuring that all surfaces are adequately exposed to the solution. This exposure is vital for achieving the necessary level of disinfection, as any part of the lumen that remains sealed or obstructed could allow microorganisms to survive, thus compromising the disinfection process.

Maintaining the lumens in an open position also helps facilitate the removal of air bubbles that could form during the disinfection process, which is essential for thorough coverage. If the lumens are kept closed, the disinfectant cannot penetrate effectively, defeating the purpose of the disinfection procedure. Therefore, keeping the lumens open is fundamental for successful high-level disinfection.

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Adding excess disinfectant

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