AIIMS CRE 2025
Medical & Surgical Nursing
Easy
What is the primary goal of post-exposure prophylaxis (PEP)?
Appeared in: AIIMS CRE 2025
Explanation
- Post-exposure prophylaxis (PEP) is an emergency medical intervention designed to prevent HIV infection after a potential exposure.
- It involves taking a 28-day course of antiretroviral therapy (ART) to stop the virus from replicating and establishing a permanent infection.
- To be effective, PEP must be initiated as soon as possible, and always within 72 hours of the exposure event.
- It is indicated for both occupational (e.g., needlestick injury in healthcare) and non-occupational (e.g., unprotected sex, sexual assault) exposures.
Why Other Options Were Wrong
- Option A: PEP is a preventive strategy, not a cure. There is currently no cure for HIV infection; lifelong ART is used for management, not eradication.
- Option C: The goal of PEP is to prevent the initial infection that causes CD4 cell depletion. Managing CD4 count is a goal of long-term ART in a person already living with HIV.
- Option D: PEP aims to prevent seroconversion, which is the development of detectable HIV antibodies. It does not act on or eliminate antibodies that have already formed.
Related Visual
- Visual 1: Timeline - A timeline illustrating the critical 72-hour window for initiating PEP after exposure, followed by the 28-day treatment course. This helps emphasize the time-sensitive nature of the intervention.
- Visual 2: Flowchart - A simple flowchart showing the decision-making process after a potential HIV exposure: Assess risk -> Test exposed person (baseline) -> Initiate PEP within 72 hours -> Complete 28-day course -> Follow-up testing.
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Post-exposure prophylaxis (PEP) for HIV prevention as background academic context rather than a clinical decision trigger.
- Nurses are crucial in assessing exposure risk, providing immediate counseling, and ensuring PEP is started within the 72-hour window.
- Patient education on strict adherence to the 28-day regimen is a key nursing responsibility, as non-adherence can lead to PEP failure and subsequent infection.
- Nurses manage the follow-up schedule for HIV testing at baseline, 4-6 weeks, 3 months, and 6 months to confirm the person's HIV status post-exposure.
How to Approach the Question
- First, identify the core concept in the question: 'post-exposure prophylaxis (PEP)'.
- Break down the term: 'Post-exposure' means after coming into contact with a pathogen. 'Prophylaxis' means a measure taken to prevent disease.
- Combine the meanings: PEP is a preventive measure taken after a potential exposure to a disease.
- Evaluate the options based on this definition. 'Curing', 'increasing CD4 count', and 'eliminating antibodies' are all actions related to an established infection, not prevention.
- Select the option that directly aligns with the definition of prophylaxis: preventing the infection from taking hold after exposure.
Concept Tested & Keywords
- Concept Tested: Post-exposure prophylaxis (PEP) for HIV prevention
- Stem keywords: primary goal, post-exposure prophylaxis, PEP
- Lead-in keywords: What is
Question ID
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