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

A decrease in pressure when moving the elevators during leak testing indicates a leak in the endoscope system. This is because the pressure drop suggests that air or fluid is escaping from the system, which would not occur if the endoscope were intact and properly sealed. A healthy endoscope should maintain stable pressure when testing; any movement that results in a pressure decrease points to a potential breach in the system's integrity.

In contrast, an increase in pressure when moving the elevators would suggest that the system is effectively maintaining its sealed environment, which is a desirable outcome during leak testing. Consistent pressure regardless of lever movement indicates that there are no leaks present, as there should be no fluctuations in pressure. Similarly, pressure increasing when not moving the levers does not signify a leak but could indicate that the pressure is being maintained or building up due to the operation of the system’s internal components without any external breach. Thus, the only indication of a leak is the notable decrease in pressure during lever movement.