Which antiretroviral regimen is recommended for newborns exposed to HIV?

AIIMS CRE 2025

Child Health Nursing (Pediatrics)

Medium

Appeared in: AIIMS CRE 2025

Explanation

For newborns at high risk of perinatal HIV transmission, a three-drug regimen is the standard of care for presumptive therapy.
High-risk scenarios include mothers with an unsuppressed or unknown viral load, no antepartum ART, or acute HIV infection during pregnancy.
The combination of Zidovudine, Lamivudine, and Nevirapine provides a potent, multi-mechanism approach to inhibit viral replication and prevent infection in the infant.
When the risk level is not specified in a question, the safest and most comprehensive regimen (for high-risk cases) is considered the best answer.

Option A: This regimen is insufficient for high-risk or unknown-risk newborns.
Option B: Nevirapine is not used as a standalone prophylactic agent for newborns in current standard guidelines.
Option C: While stronger than monotherapy, this two-drug regimen is generally considered less effective than the preferred three-drug regimens for high-risk infants.

Visual 1: Table: A summary table comparing ART regimens for low-risk versus high-risk HIV-exposed infants, detailing the maternal criteria and corresponding infant drug protocol as per national guidelines.
Visual 2: Flowchart: A decision-making flowchart for neonatal HIV prophylaxis, starting from the mother's HIV status and branching based on viral load, ART history, and delivery circumstances to determine the correct infant regimen.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Antiretroviral prophylaxis for HIV-exposed newborns as background academic context rather than a clinical decision trigger.
The initiation of antiretroviral prophylaxis is a time-sensitive emergency. It should begin as soon as possible after birth, ideally within 6-12 hours, to be most effective.
Nurses play a critical role in assessing the newborn for potential side effects of ART, particularly anemia and neutropenia associated with Zidovudine, by monitoring complete blood counts.
Patient education is vital. Nurses must counsel the mother on the importance of adherence to the infant's drug schedule and on safe feeding practices (e.g., exclusive formula feeding where safe and available) to prevent postnatal transmission.

How to Approach the Question

First, identify the core of the question: selecting the correct antiretroviral prophylaxis for an HIV-exposed newborn.
Recall that the choice of regimen is based on the infant's risk of transmission (low vs. high), which is determined by the mother's HIV status, viral load, and treatment history.
Analyze the options provided. Note that they represent different levels of treatment intensity (monotherapy, dual therapy, triple therapy).
Recognize that the question does not specify the infant's risk level. In such cases of ambiguity, the standard test-taking strategy is to choose the most comprehensive and safest option.
Select the three-drug combination, as this is the recommended regimen for high-risk infants, representing the most aggressive approach to prevent transmission when the risk is unknown or high.

Concept Tested & Keywords

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