MP NHM CHO-2024 (Shif…: According to the CDC, \ \ \ \ \ \ can inactivate HIV.

MP NHM CHO-2024 (Shift-2)

Applied Microbiology & Infection control

Easy

Appeared in: MP NHM CHO-2024 (Shift-2)

Explanation

Ethyl alcohol is a recognized chemical disinfectant capable of inactivating viruses like HIV.
It functions as a virucidal agent by destroying the outer lipid envelope of the virus, which is essential for the virus to infect cells.
Concentrations between 60% and 90% are considered effective for this purpose.
The CDC and other health organizations recommend alcohol-based disinfectants for surface decontamination and as a key component of hand sanitizers.

Option A: Acetone is a chemical solvent, primarily used in industrial settings or as a nail polish remover. It is not formulated or approved as a medical-grade disinfectant for pathogens like HIV.
Option B: Distilled water is purified water and has no chemical properties that would allow it to inactivate or destroy a virus. It is a neutral substance.
Option D: Acetic acid, the main component of vinegar, is a weak acid with mild antimicrobial properties. It is not potent enough to be considered a reliable disinfectant for inactivating robust, bloodborne pathogens like HIV.

Visual 1: Diagram - A diagram showing the structure of the Human Immunodeficiency Virus (HIV), highlighting the outer lipid envelope. An arrow can point to the envelope with a note saying 'Targeted by alcohol disinfectants'.
Visual 2: Infographic - An infographic listing CDC-recommended disinfectants for HIV, including alcohol, bleach (sodium hypochlorite), and hydrogen peroxide, with their recommended concentrations and contact times.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain HIV inactivation and chemical disinfectants as background academic context rather than a clinical decision trigger.
Understanding which disinfectants are effective against HIV is fundamental to infection control and prevention in all healthcare settings.
Nurses must ensure that equipment and surfaces are decontaminated using appropriate virucidal agents to protect both patients and healthcare workers from exposure to bloodborne pathogens.
Using an incorrect agent, like distilled water or vinegar, creates a false sense of security and can lead to the transmission of infectious diseases.

How to Approach the Question

First, identify the key elements of the question: the pathogen (HIV), the action (inactivate), and the authority (CDC).
This is a factual recall question based on knowledge of microbiology and infection control principles.
Evaluate each option based on its known properties as a disinfectant.
Recall that alcohols are common and effective disinfectants used in healthcare.
Consider the mechanism of action. HIV is an enveloped virus, and agents that disrupt lipid membranes (like alcohol) are effective against it.
Eliminate options that are clearly not disinfectants (distilled water) or are not standard medical-grade virucides (acetone, acetic acid).

Concept Tested & Keywords

Q0c4TprCC_YfDppdIkgejv

E6 Microbiology Applied AnjuDhir 3e Part 2 p. 453-456