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The arm circumference at birth and its relations to other anthropomeric parameters
Insights
Arm circumference may indicate infant maturity at birth. Researchers found strong correlations between infant weight and chest/arm circumference, but could not create a reliable birth weight estimation equation.
Area of Science:
- Neonatal research
- Pediatric anthropometry
Background:
- Accurate assessment of infant maturity at birth is crucial for neonatal care.
- Birth weight, head, chest, and arm circumference are common anthropometric measurements.
- Understanding correlations between these measurements can aid in assessing infant development.
Purpose of the Study:
- To evaluate the arm circumference as a potential indicator of infant maturity at birth.
- To correlate arm circumference with other anthropometric measurements (weight, head, chest circumference).
- To explore correlations with maternal factors.
Main Methods:
- Anthropometric measurements (weight, head, chest, arm circumference) were taken from 461 newborns within 24 hours of birth in Jamaica.
- Statistical analysis was performed to determine correlations between the measured parameters.
Main Results:
- A high positive correlation was observed between infant weight and chest circumference.
- A significant positive correlation was also found between infant weight and arm circumference.
- Attempts to develop an equation for estimating birth weight using arm and chest circumference were unsuccessful.
Conclusions:
- Arm circumference shows potential as an indicator of infant maturity.
- While correlated with weight, arm and chest circumference alone are insufficient for accurate birth weight estimation.
- Further research may be needed to refine predictive models for infant anthropometry.
Abstract:
The weight, head, chest and arm circumference of four hundred and sixty-one infants in Jamaica were measured during the first twenty-four hours of birth. The purpose of this work was to draw attention to the arm circumference as a possible indicator of the stage of maturity at birth and correlate this parameter against the other three and against factors on the mother. The highest positive correlation was found between the weight and the chest circumference, followed by the weight and arm cirucmference. Attempt to produce an equation to estimate birth weight from arm and chest circumference was unsatisfactory.