Name the widely used disinfectant for HIV infected materials?

NHM MP Staff Nurse-2022

Applied Microbiology & Infection control

Easy

Appeared in: NHM MP Staff Nurse-2022

Explanation

Hypochlorite solutions (like household bleach) are explicitly recommended by health authorities for disinfecting materials contaminated with bloodborne pathogens, including HIV.
They are potent virucidal agents that are fast-acting, inexpensive, and have a broad spectrum of activity.
A 1:10 dilution of household bleach is the standard concentration used in healthcare settings for managing blood spills.
The key differentiator is that hypochlorite is the most 'widely used' and standard recommendation for this specific purpose compared to other options.

Option B: Lysol is a cresol-based phenolic compound. While it is a powerful general-purpose disinfectant for surfaces like floors and bedpans, it is not the primary or most widely recommended agent for decontaminating blood spills or materials infected with HIV.
Option C: Dyes, such as aniline or acridine dyes, are primarily used as topical antiseptics on living tissue (skin) to inhibit bacterial growth, for example, in treating bedsores. They are not used for disinfecting inanimate objects or surfaces.
Option D: Hydrogen peroxide is a high-level disinfectant and is effective against viruses. However, it is not as widely used or recommended as the first-line choice for routine disinfection of HIV-contaminated materials compared to hypochlorite solutions. It can be corrosive to some surfaces and is less stable than bleach.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Selection of appropriate disinfectant for materials contaminated with bloodborne pathogens like HIV as background academic context rather than a clinical decision trigger.
Correct disinfection is a cornerstone of infection prevention and control, protecting both healthcare workers and patients from nosocomial infections.
Nurses must be proficient in selecting and using the correct disinfectant based on the pathogen and the type of material, as part of implementing standard precautions.
Improper disinfection of HIV-contaminated materials poses a significant risk of occupational exposure and transmission of bloodborne diseases.

How to Approach the Question

First, identify the core of the question: it asks for the 'widely used' disinfectant for 'HIV infected materials'.
Recognize that 'HIV infected materials' implies contamination with blood or body fluids, which requires a specific level of disinfection (virucidal).
Recall or deduce the standard infection control guidelines for bloodborne pathogens.
Evaluate each option based on this standard. Hypochlorite (bleach) is the well-established, first-line choice for this purpose.
Eliminate other options by identifying their primary uses: Lysol for general surfaces, dyes as skin antiseptics, and hydrogen peroxide as a high-level disinfectant for specific applications but not the most common for blood spills.

Concept Tested & Keywords

Concept Tested: Selection of appropriate disinfectant for materials contaminated with bloodborne pathogens like HIV.
Stem keywords: disinfectant, HIV infected materials
Lead-in keywords: widely used
Clinical cues: The term 'HIV infected materials' is a critical cue, pointing towards the need for a disinfectant effective against bloodborne viruses.

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E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart A (pp 26-201 of 604) p. 128-130