What is the main reason for under five morbidity and mortality?

TMC Staff Nurse - 2019

Child Health Nursing (Pediatrics)

Hard

Appeared in: TMC Staff Nurse - 2019

Explanation

Malnutrition is the single largest underlying cause, contributing to approximately 45-50% of all deaths in children under five years of age.
It severely impairs a child's immune function, which increases the frequency, severity, and duration of common infectious diseases like diarrhea, pneumonia, and measles.
The risk of death from an infectious disease increases exponentially even with mild forms of undernutrition, making it the most critical factor for child survival.

Option B: Diarrheal disease is a major direct cause of death, but it is not the primary underlying reason. Its lethality is significantly amplified by malnutrition.
Option C: Asphyxia (lack of oxygen at birth) is a leading cause of death specifically within the neonatal period (the first 28 days of life).
Option D: Leukemia is a type of cancer. While serious, it is not a leading cause of mortality at a population level for children under five when compared to the widespread impact of malnutrition and infectious diseases.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Leading causes of under-five morbidity and mortality as background academic context rather than a clinical decision trigger.
Nurses are at the forefront of combating child malnutrition through regular growth monitoring, using tools like growth charts and Mid-Upper Arm Circumference (MUAC) tapes to identify at-risk children early.
Health education provided by nurses on exclusive breastfeeding, timely and appropriate complementary feeding, and hygiene practices is a cornerstone of preventing malnutrition.
What if? If a child presents with pneumonia and also has a MUAC of 11 cm (indicating Severe Acute Malnutrition), the nursing priority escalates. The child requires immediate referral for specialized care, including therapeutic feeding and careful management of infection, as the risk of death is extremely high.

How to Approach the Question

First, identify the core of the question: it asks for the 'main reason' for under-five mortality, which suggests looking for the most significant underlying or root cause.
Evaluate the options based on your knowledge of child health epidemiology.
Differentiate between direct causes of death (like an infection) and underlying conditions that increase the risk of death from those causes.
Recall that Asphyxia is primarily a neonatal problem and Leukemia is relatively rare.
Compare Diarrheal Disease (a major direct killer) with Malnutrition. Recognize that malnutrition is the key factor that makes common childhood illnesses like diarrhea so deadly.
Conclude that since malnutrition is documented as a contributing factor in nearly half of all under-five deaths, it is the most accurate answer for the 'main reason'.

Concept Tested & Keywords

Q6vqouofWEwXVGoDASGqQX

E6 Parks TextBook of Preventive & Social Medicine part 2 — Subpart A (pp 1-232 of 464) pp. 46-48, 71-73

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 469-471