What is considered the most critical step in manual reprocessing of flexible endoscopes?

The most critical step in the manual reprocessing of flexible endoscopes is cleaning. Proper cleaning removes organic debris, biofilm, and other contaminants from the surfaces of the endoscope, which is essential for the effectiveness of subsequent disinfection and sterilization processes. If any residual matter remains on the endoscope, it can hinder the action of disinfectants and increase the risk of transmitting infections.

By ensuring that the endoscope is thoroughly cleaned, the chances of effective disinfection are maximized, thus protecting patient safety. This step lays the groundwork for all subsequent steps in reprocessing, making it vital to achieve successful outcomes in infection control. The other steps, while important, rely heavily on thorough cleaning to ensure their effectiveness.