Baby's weight is tripled at the age of?

Appeared in: IGIMS Staff Nurse - 2018

Explanation

An infant's birth weight typically triples by the age of 12 months (1 year).
This is a crucial developmental milestone used by healthcare professionals to assess if a child is receiving adequate nutrition and growing properly.
According to pediatric growth standards, an infant doubles their birth weight by 5-6 months and triples it by the end of the first year.
For an average Indian neonate with a birth weight of 3 kg, the expected weight at one year is approximately 9 kg.

Option A: At 3 months, an infant is in a period of very rapid growth but has not yet come close to tripling their birth weight.
Option B: The milestone for 5-6 months of age is the doubling of birth weight, not tripling.
Option C: At 9 months, an infant is approaching the triple-weight milestone but has generally not reached it yet. Growth rate slows slightly in the second half of the first year.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Infant growth milestones related to weight as background academic context rather than a clinical decision trigger.
Regularly plotting an infant's weight on a growth chart (like the WHO MGRS charts) is a fundamental nursing responsibility to monitor for adequate growth and for early detection of issues like failure to thrive or obesity.
Nurses play a vital role in educating parents about these milestones, which helps them understand their child's development and identify potential concerns that need medical attention.
What if? If an infant has not tripled their birth weight by 15 months, it is a significant red flag requiring a thorough nutritional, developmental, and medical evaluation to rule out underlying conditions such as chronic illness or feeding difficulties.

How to Approach the Question

First, identify the core of the question, which is about a specific infant growth milestone: 'weight tripled'.
This is a factual recall question. Access your knowledge of standard pediatric growth patterns.
Recall the key rules of thumb for weight gain: doubles by 5-6 months, triples by 1 year, and quadruples by 2 years.
Compare this rule to the given options. '12 months' directly corresponds to the '1 year' milestone for tripling weight.
Eliminate the other options based on this knowledge: 6 months is for doubling, while 3 and 9 months are intermediate points.

Concept Tested & Keywords

Qc7v4WMDu2Ntl7XWFRhyzA

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 IGIMS Staff Nurse - 2018

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