The birth weight of a newborn quadruples at?

Appeared in: NORCET 2 - 2021 (shift-1)

Explanation

2 years, as this is the standard age by which an infant's birth weight is expected to have quadrupled.
According to pediatric growth standards, an infant's weight triples by 1 year and quadruples by 2 years.
For an average Indian newborn weighing 3 kg at birth, the expected weight at 2 years would be approximately 12 kg.
This milestone is a key indicator of adequate nutrition and healthy physical development during the first two years of life.

Option A: At 1 year of age, an infant's birth weight is expected to triple, not quadruple.
Option C: 5 years (18 months) is not a standard benchmark for the quadrupling of birth weight. While the child is gaining weight, this specific milestone is met at 2 years.
Option D: By 4 years, a child's weight has increased significantly more than four times the birth weight. This is too late for the quadrupling milestone.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Infant growth and developmental milestones (weight) as background academic context rather than a clinical decision trigger.
Nurses must accurately monitor infant growth by plotting weight, length, and head circumference on WHO growth charts at every visit.
Failure to meet weight milestones (e.g., not tripling by 1 year or quadrupling by 2 years) is a red flag that requires further investigation.
Nursing assessment should include evaluating feeding practices, dietary intake, and signs of underlying illness or malabsorption. Based on the findings, the nurse provides nutritional counseling and may refer the family to a pediatrician or dietitian.

How to Approach the Question

Identify the core question: The question asks for a specific factual point about infant growth milestones.
Recognize the question type: This is a factual recall question common in pediatrics.
Access your knowledge base: Recall the standard rules for infant weight gain: doubles by 5 months, triples by 1 year, quadruples by 2 years.
Evaluate the options based on the recalled facts. '2 years' directly matches the milestone for quadrupling birth weight.
Eliminate incorrect options: 1 year is for tripling, 1.5 years is not a standard milestone, and 4 years is too late.

Concept Tested & Keywords

QTRNZpHLbZrNIVhcMJBBI2

E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 10-12

E6 Anatomy Grays 43e Vol 1 Part 3 p. 15-17

Practise the full NORCET 2 - 2021 (shift-1)

Attempt every question from this paper in a timed mock, then review the full solution for each one.