The first indicator of PEM is?

HPSSSB Staff Nurse - 2016

Applied Nutrition & Dietetics

Easy

Appeared in: HPSSSB Staff Nurse - 2016

Explanation

Underweight for age is the earliest and most sensitive indicator of PEM, often detected through routine growth monitoring before other clinical signs become apparent.
It is a composite index that can reflect both chronic malnutrition (stunting) and acute malnutrition (wasting), making it a useful overall indicator of a child's nutritional status.
A failure to gain weight or a drop in the weight-for-age percentile on a growth chart is the first sign of growth faltering.
Several classification systems for PEM, such as the Gomez and IAP classifications, are based on weight-for-age measurements.

Option B: Underweight for height, known as wasting, is an indicator of acute or recent malnutrition, often caused by severe illness or food shortage. While a serious condition, it is not typically the first sign, which is a simple failure to gain weight.
Option C: Under height for age, known as stunting, is an indicator of chronic or long-term malnutrition. It reflects a cumulative process of poor nutrition over an extended period and is therefore not the first indicator.
Option D: Economic status is a significant risk factor or determinant of malnutrition, but it is not a clinical or anthropometric indicator used to diagnose PEM in an individual child.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Early indicators of Protein-Energy Malnutrition (PEM) as background academic context rather than a clinical decision trigger.
Nurses play a vital role in community health settings by conducting regular growth monitoring for children under five. Early detection of underweight status is critical for timely intervention.
Identifying a child as underweight for their age prompts the nurse to provide nutritional counseling to the caregiver, investigate feeding practices, and screen for underlying infections, thereby preventing the progression to more severe forms of malnutrition like marasmus or kwashiorkor.
What if? If a child is found to be severely wasted (very low weight-for-height) but only mildly underweight for age, the priority is immediate therapeutic feeding to manage the acute life-threatening condition, even if the weight-for-age isn't in the most severe category.

How to Approach the Question

First, identify the core of the question: it asks for the 'first' indicator of PEM. This keyword implies the earliest, most sensitive sign.
Next, analyze the options, recognizing that three are standard anthropometric measures and one is a socio-economic factor. Immediately eliminate 'underweight for economic status' as it's not a clinical measurement.
Differentiate between the remaining three options. Recall that 'underweight for age' is a general measure, 'underweight for height' (wasting) signifies acute problems, and 'under height for age' (stunting) signifies chronic problems.
Reason that a child's weight gain will slow or stop before their height growth is affected or before they lose a significant amount of weight relative to their height. Therefore, 'underweight for age' is the initial sign.
Confirm this by recalling that growth charts primarily track weight-for-age to monitor a child's health status over time.

Concept Tested & Keywords

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