Medical Device Reprocessing Association of Ontario (MDRAO) Practice Exam

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What is the primary limitation of ILD?

  1. It does not effectively kill all microorganisms

  2. It is too expensive to use

  3. It requires a long contact time

  4. It is not pH neutral

The correct answer is: It does not effectively kill all microorganisms

The primary limitation of Intermittent Low-Level Disinfection (ILD) is that it does not effectively kill all microorganisms. While ILD can significantly reduce the bacterial load and is beneficial in certain applications, it may not provide sufficient efficacy against more resilient pathogens, such as bacterial spores or specific viruses. This limitation makes it necessary to combine ILD with other disinfection methods or to ensure that surfaces are appropriately cleaned and treated to achieve a higher level of microbial kill when higher risk of infection is present. Other considerations, like cost or contact time, can be relevant in specific contexts but do not fundamentally address the effectiveness of the method in eliminating a broad range of microorganisms. Similarly, while pH neutrality can influence disinfection efficacy and material compatibility, the effectiveness against microorganisms remains the paramount concern in evaluating ILD's limitations.