MP CHO -2019 (Shift-1): What is used to decontaminate items used by HIV patients?

MP CHO -2019 (Shift-1)

Applied Microbiology & Infection control

Easy

Appeared in: MP CHO -2019 (Shift-1)

Explanation

Sodium hypochlorite (household bleach) is the universally recommended disinfectant for items and surfaces contaminated with blood or body fluids from HIV patients.
It is a powerful oxidizing agent that effectively inactivates enveloped viruses like HIV by destroying their protein and nucleic acid structure.
The Centers for Disease Control and Prevention (CDC) recommends a 1:10 dilution of household bleach, which yields a 0.5% solution, for disinfecting blood spills.
It is preferred for general decontamination because it is inexpensive, readily available, and fast-acting.

Option A: Formaldehyde is a gas sterilant and tissue preservative. It is highly toxic, a potential carcinogen, and too hazardous for routine decontamination of patient care items.
Option B: Methanol (wood alcohol) is not an effective disinfectant for healthcare purposes. It has poor germicidal activity and is highly toxic if absorbed, inhaled, or ingested.
Option C: Glutaraldehyde is a high-level disinfectant reserved for specific uses. It is not practical or recommended for general surface or item decontamination due to its cost, toxicity, and specific handling requirements.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Disinfection and decontamination protocols for HIV-contaminated items as background academic context rather than a clinical decision trigger.
Correctly applying disinfection protocols is a fundamental component of Standard Precautions, essential for preventing nosocomial infections and protecting healthcare workers from bloodborne pathogens like HIV, HBV, and HCV.
Nurses are directly responsible for ensuring spills are managed correctly and that reusable equipment is decontaminated appropriately. This knowledge is critical for patient and staff safety.
What if? If the item to be decontaminated was a heat-sensitive flexible bronchoscope, the correct answer would change to Glutaraldehyde. Bleach (sodium hypochlorite) is corrosive and would damage the delicate components of the endoscope.

How to Approach the Question

First, identify the key elements of the question: the action is 'decontaminate' and the context is 'items used by HIV patients'. This points towards disinfection for bloodborne pathogens.
Consider the nature of potential contamination. Items associated with any patient, especially one with a known bloodborne virus like HIV, must be treated as potentially contaminated with blood or body fluids.
Evaluate each option based on its standard application in a healthcare setting.
Recall that sodium hypochlorite (bleach) is the most common, effective, and recommended disinfectant for general surfaces and items contaminated with blood.
Eliminate the other options based on their specific roles: Formaldehyde is for fumigation/preservation, Methanol is not a medical disinfectant, and Glutaraldehyde is a specialized high-level disinfectant for heat-sensitive instruments.

Concept Tested & Keywords

Concept Tested: Disinfection and decontamination protocols for HIV-contaminated items
Stem keywords: decontaminate, items, HIV patients
Lead-in keywords: What is used
Negative lead-in flag: false

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E6 Pharmacology Katzung 16e p. 1397-1399

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