International Licensing Examination (ILE) Practice Test

What defines critical instruments in infection control?

1. Instruments used for routine examinations

2. Instruments that come in contact with intact mucous membranes

3. Disposable instruments for single use

4. Non-invasive instruments that do not contact bodily substances

The correct answer is: Instruments that come in contact with intact mucous membranes

Critical instruments in infection control are defined as those that come into contact with sterile tissues or vascular structures. This includes instruments used in surgical procedures or other invasive treatments where they may penetrate the body, thus leading to a high risk of infection if not properly sterilized. In contrast, instruments used for routine examinations typically do not penetrate the skin or enter sterile areas of the body, placing them in a different category regarding infection risk. Disposable instruments are designed for single use to minimize the risk of infection, but they do not encompass the full definition of critical instruments which must always be sterilized between uses. Non-invasive instruments do not contact bodily substances and therefore do not carry the same infection risk as critical instruments, as they are not involved in procedures that affect sterile areas. This distinction is crucial for adhering to proper infection control protocols, as the handling, cleaning, and sterilization of critical instruments must meet stringent guidelines to prevent transmission of infections.