Which opportunistic infection is considered the most common cause of death in HIV/AIDS?

AIIMS CRE 2025

Medical & Surgical Nursing

Easy

Appeared in: AIIMS CRE 2025

Explanation

Tuberculosis (TB) is the leading cause of death among people living with HIV, responsible for about one in three AIDS-related deaths globally.
HIV infection severely weakens the immune system by destroying CD4+ T-cells, which dramatically increases the risk of a latent TB infection progressing to active, life-threatening TB disease.
The co-infection is synergistic and particularly lethal; TB accelerates the progression of HIV disease by further weakening the immune system, and HIV makes it harder to diagnose and treat TB.

Option A: Malaria is a parasitic disease transmitted by mosquitoes. While it can be more severe in immunocompromised individuals, it is not classified as a defining opportunistic infection responsible for the highest mortality in the global HIV/AIDS population.
Option C: While Pneumocystis pneumonia (PCP) was a hallmark of the early AIDS epidemic and a leading cause of death, its incidence has been drastically reduced in the era of antiretroviral therapy (ART) and effective prophylactic medications like TMP-SMX.
Option D: Although Cryptococcal meningitis is a severe and often fatal fungal infection of the central nervous system in patients with advanced HIV (typically with CD4 counts below 100), it is responsible for fewer deaths globally compared to the overall burden of Tuberculosis.

Visual 1: Infographic: A pie chart showing the percentage breakdown of causes of death from opportunistic infections in HIV/AIDS patients globally, highlighting the large portion attributed to Tuberculosis.

Clinical Relevance

Nursing practice connection: Knowing Leading cause of mortality from opportunistic infections in HIV/AIDS helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
It is a standard of care that all patients newly diagnosed with HIV must be screened for both latent and active Tuberculosis due to the high risk of co-infection and mortality.
Nurses play a critical role in patient education regarding the absolute necessity of medication adherence for both ART and anti-TB drug regimens to prevent the development of drug-resistant strains and ensure treatment success.
What if? If a patient with HIV lived in a high-income country with consistent access to ART and their viral load was suppressed, their leading cause of death would more likely be a non-AIDS-related condition, such as cardiovascular disease, kidney disease, or non-AIDS cancer, because opportunistic infections are much better controlled in this setting.

How to Approach the Question

First, identify the key elements of the question: 'most common cause of death', 'opportunistic infection', and 'HIV/AIDS'. This frames the question around global epidemiology.
Recognize this as a factual recall question. You need to access your knowledge of the most significant complications of HIV on a worldwide scale.
Evaluate the options. All are serious infections associated with HIV. However, you must differentiate them based on mortality burden.
Recall or deduce the historical versus current context. Pneumocystis pneumonia (PCP) was a major killer in the past, but its impact has been significantly reduced by modern medicine (ART and prophylaxis).
Consider the global picture. Tuberculosis is highly prevalent in many of the same regions where HIV is widespread, leading to a massive burden of co-infection. This makes it the leading cause of death in this population globally.
Conclude that Tuberculosis is the correct answer based on its status as the number one infectious killer of people with HIV.

Concept Tested & Keywords

Concept Tested: Leading cause of mortality from opportunistic infections in HIV/AIDS
Stem keywords: opportunistic infection, cause of death, HIV/AIDS
Lead-in keywords: most common
Negative lead-in flag: false

Q0_OuL2OJAxJmgnHb0yRRb