Antiretroviral therapy is used for?

NHM MP Staff Nurse-2019

Pharmacology

Easy

Appeared in: NHM MP Staff Nurse-2019

Explanation

Antiretroviral therapy (ART) is a specific treatment regimen designed to combat infections caused by retroviruses.
Human Immunodeficiency Virus (HIV) is the most well-known retrovirus affecting humans.
ART uses a combination of drugs to inhibit various stages of the HIV life cycle, suppressing viral replication.
The goal is to reduce the viral load to undetectable levels, which allows the immune system (measured by CD4 count) to recover and prevents disease progression.
This therapy has transformed HIV from a fatal illness into a manageable chronic condition with a near-normal life expectancy.

Option A: Malaria is caused by a parasite of the Plasmodium species, not a virus. Therefore, it is treated with antimalarial drugs, not antiretrovirals.
Option B: Hepatitis B and C are viral infections, but they are not retroviruses. They are treated with different classes of antiviral drugs. While some drugs used in ART (like Tenofovir) also have activity against Hepatitis B, ART as a combination therapy is the standard for HIV.
Option D: Tuberculosis (TB) is a bacterial infection caused by Mycobacterium tuberculosis. It is treated with a specific multi-drug antibiotic regimen, often referred to as anti-TB therapy (ATT).

Clinical Relevance

Nursing practice connection: Knowing Pharmacology: Indication of Antiretroviral Therapy (ART) helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
A nurse's role in ART management is critical. It includes educating patients on the importance of lifelong, strict adherence to their medication schedule to prevent drug resistance.
Nurses monitor for the effectiveness of ART (viral load suppression, CD4 count increase) and manage potential side effects and drug interactions.
The success of ART underpins the 'Undetectable = Untransmittable' (U=U) public health message, which states that individuals with a sustained undetectable viral load cannot sexually transmit HIV.

How to Approach the Question

First, identify the key term in the question: 'Antiretroviral therapy'.
Break down the term: 'Anti-' means against, and 'retroviral' refers to a specific class of viruses called retroviruses.
Review the options and determine which disease is caused by a retrovirus.
Recall that HIV (Human Immunodeficiency Virus) is the classic example of a retrovirus.
Eliminate the other options by identifying their causative agents: Malaria is caused by a parasite, Tuberculosis by a bacterium, and Hepatitis by other types of viruses (not retroviruses).
Conclude that Antiretroviral therapy is the specific treatment for HIV.

Concept Tested & Keywords

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E6 Pharmacology Nursing Lilley 11e Part 3 p. 16-18

E6 Medicine Davidson Principles Practice 24e p. 344-346

E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart C (pp 404-604 of 604) p. 17-19