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Updated: May 15, 2026

Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
Published on: August 25, 2014
Growth and neurodevelopmental outcome of VLBW infants at 1 year corrected age
1Department of Neonatology, Center for Child Health, Sir Ganga Ram Hospital, New Delhi. drmanojmodi@gmail.com
Insights
Very low birth weight (VLBW) infants experience growth faltering in the NICU but show catch-up growth later. However, VLBW infants lag behind normal birth weight (NBW) infants in physical growth and neurodevelopment at one year.
Area of Science:
- Neonatalogy
- Pediatric Growth and Development
- Neurodevelopmental Pediatrics
Background:
- Infant growth and neurodevelopment are critical indicators of long-term health.
- Very low birth weight (VLBW) infants face unique challenges compared to normal birth weight (NBW) infants.
- Understanding the trajectory of VLBW infant development is essential for timely interventions.
Purpose of the Study:
- To compare the growth and neurodevelopmental outcomes of VLBW infants with NBW infants.
- To track anthropometric measurements and developmental quotients (DQ) up to 12 months corrected age.
- To identify growth patterns and developmental differences between VLBW and NBW infants.
Main Methods:
- A prospective cohort study was conducted in a tertiary care neonatal unit in northern India.
- 37 VLBW and 35 NBW infants were enrolled between January 2007 and December 2007.
- Anthropometric measurements (Z-scores) and DQ were assessed serially from birth to 12 months corrected age.
Main Results:
- VLBW infants showed a significant drop in Z-scores for weight, length, and head circumference (HC) by discharge.
- Catch-up growth was observed, but VLBW infants had significantly lower Z-scores for weight, length, and HC at 12 months corrected age compared to NBW infants.
- VLBW infants exhibited a significantly lower DQ at 12 months corrected age (91.5±7.8) than NBW infants (97.5±5.3).
Conclusions:
- VLBW infants experience growth faltering during NICU stay, followed by catch-up growth in infancy.
- Despite catch-up, VLBW infants demonstrate persistent deficits in physical growth and neurodevelopment at one year corrected age compared to NBW infants.
- These findings highlight the need for continued monitoring and support for VLBW infants' long-term development.
Objective:
To evaluate growth and neurodevelopmental outcome of very low birth weight infants (VLBW) and compare with term normal birth weight infants (NBW) till 12 months corrected age.
Design:
A prospective cohort study.
Setting:
Tertiary care neonatal unit in northern India.
Subjects:
37 VLBW infants and 35 NBW infants born between January 2007 and December 2007.
Interventions:
Anthropometric measurements were recorded and Z-scores were computed serially at birth, discharge, 40 weeks post menstrual age (PMA), and at 1, 3, 6 and 12 months of corrected age. Developmental quotient (DQ) at 12 months corrected age was assessed.
Results:
Z-scores for weight, length and head circumference (HC) at birth were -1.21(±0.92), -0.98(±1.32) and -0.70(±1.14), respectively for VLBW infants and -0.37(±0.72), -0.11(±0.96) and 0.05(±0.73) respectively for NBW infants. VLBW infants had a significant drop in all Z-scores by discharge (P<0.001). There was a catch up to birth scores by 12 month age. VLBW infants had significantly lower Z-scores for weight, length and HC at one year corrected age as compared to NBW infants (P =0.01, 0.04 and 0.001, respectively). DQ at 12 months was significantly lower in VLBW infants (91.5+7.8) than NBW infants (97.5±5.3) (P <0.001). DQ of small for gestational age (SGA) and appropriate for gestational age (AGA) VLBW infants was comparable.
Conclusions:
VLBW infants falter in their growth during NICU stay with a catch-up later during infancy. In comparison to NBW infants, they continue to lag in their physical growth and neurodevelopment at 1 year of corrected age.
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