A child can sit without support at which age?

RUHS, Jaipur, PB B.Sc Nursing Entrance-2023

Child Health Nursing (Pediatrics)

Easy

Appeared in: RUHS, Jaipur, PB B.Sc Nursing Entrance-2023

Explanation

At approximately 8 months of age, an infant's neuromuscular system has matured enough to allow for independent sitting.
This milestone is characterized by the ability to maintain an upright posture without using the hands for balance, indicating developed core and trunk muscles.
According to pediatric developmental charts, sitting without support is a key gross motor skill expected around the 8-month mark.
This follows the earlier milestone at 6 months, where an infant can sit but requires the 'tripod' support of their own hands.

Option A: At 6 months, an infant can typically sit, but they still require support from their own arms placed in front of them (a 'tripod' position). They have not yet developed the balance to sit completely unsupported.
Option C: By 12 months, a child has progressed far beyond sitting. At this age, they are typically able to pull to a stand, stand independently for a few moments, and may even be walking while holding onto furniture ('cruising') or with one hand held.
Option D: By 16 months, a child is well into their toddler years and has typically mastered walking independently. Sitting without support is a much earlier milestone.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Gross motor developmental milestones in infancy as background academic context rather than a clinical decision trigger.
Nurses use developmental milestones as a crucial tool to screen for potential developmental delays. Failure to meet milestones within the expected age range can be an early sign of a neurological or developmental problem.
During well-child visits, a nurse will assess these milestones through observation and by asking parents about the child's abilities. Documenting the achievement of these skills is a standard part of pediatric care.
What if? If a 10-month-old infant is still unable to sit without support, this is considered a developmental red flag. The nurse's priority is to refer the infant for a comprehensive developmental and neurological evaluation to identify any underlying issues and initiate early intervention services if needed.

How to Approach the Question

First, identify the core concept of the question, which is a specific gross motor milestone: 'sit without support'.
Recall the typical sequence and timing of infant motor development. Remember that development is cephalocaudal (head-to-toe), so head control comes before sitting, and sitting comes before walking.
Differentiate between 'sitting with support' (which occurs earlier, around 5-6 months) and 'sitting without support'. The question specifies 'without support'.
Recall that the established age for sitting steadily without support is approximately 8 months.
Evaluate the given options: 6 months is too early (tripod sitting), while 12 and 16 months are too late (related to standing and walking).
Select the option that best matches the recalled developmental fact.

Concept Tested & Keywords

Concept Tested: Gross motor developmental milestones in infancy.
Stem keywords: child, sit without support, age
Lead-in keywords: which age
Clinical cues: Age/sex group narrows the expected diagnosis, intervention, or normal reference range.

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