What is the main cause of death in children under 5 years of age?

Raj. CHO -2020

Child Health Nursing (Pediatrics)

Easy

Appeared in: Raj. CHO -2020

Explanation

Pneumonia is the single largest infectious cause of death in children under five worldwide.
According to global health data, pneumonia accounts for approximately 12% of all deaths in this age group, making it a more frequent cause of death than other infectious diseases listed.
The pathogens that cause pneumonia (bacteria, viruses, or fungi) fill the air sacs in the lungs with fluid, making breathing painful and limiting oxygen intake.

Option A: While diarrheal disease is a major cause of death in children under five (approximately 8%), its mortality rate is lower than that of pneumonia.
Option C: Measles is a highly contagious viral disease, but widespread vaccination has dramatically reduced its incidence and mortality. It accounts for about 2% of under-five deaths.
Option D: Chickenpox (varicella) is typically a mild, self-limiting illness in healthy children. Deaths from chickenpox are very rare and it is not considered a leading cause of child mortality.

Visual 1: Pie Chart - A chart illustrating the global distribution of causes of death in children under 5, clearly showing the proportion attributed to pneumonia, diarrhea, measles, and other causes.
Visual 2: Infographic - An infographic demonstrating how to assess a child for pneumonia using IMNCI guidelines, showing how to count respiratory rate and identify chest indrawing.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Leading causes of under-5 child mortality as background academic context rather than a clinical decision trigger.
Nurses play a vital role in identifying pneumonia using the IMNCI (Integrated Management of Neonatal and Childhood Illness) guidelines, which rely on simple clinical signs like fast breathing and chest indrawing, allowing for rapid classification and treatment or referral.
Preventive nursing care includes educating mothers on the importance of exclusive breastfeeding for the first 6 months, ensuring children receive all recommended immunizations (like PCV, Hib, and measles), and advising on good nutrition and hygiene.
What if? If a 1-year-old child with a cough has a respiratory rate of 45 breaths/minute and no chest indrawing, the nurse would classify this as 'Pneumonia' (not severe) and can initiate treatment with oral amoxicillin as per protocol, advising the mother to return if the child worsens.

How to Approach the Question

First, identify the core of the question: it asks for the 'main' or leading cause of death in a specific population (children under 5).
This is a factual recall question based on global public health knowledge.
Consider the options provided. All are infectious diseases affecting children.
Compare the relative impact of these diseases. Recall or reason that respiratory infections are a major global health problem.
Eliminate options that are known to have lower mortality rates. Widespread vaccination has significantly reduced deaths from measles, and chickenpox is generally not fatal.
Between pneumonia and diarrhea, recall that pneumonia is recognized as the single largest infectious killer of young children.

Concept Tested & Keywords

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