Neonatal screening by mid-arm circumference

Area of Science:

• Neonatal Health
• Pediatric Measurements
• Public Health Screening

Background:

• Accurate assessment of birth weight in neonates is crucial for timely intervention.
• Traditional methods for assessing neonatal health can be resource-intensive in field settings.
• Mid-arm circumference (MAC) offers a potential low-cost, easily applicable screening tool.

Purpose of the Study:

• To evaluate the efficacy of a tricolored mid-arm circumference (MAC) measuring tape in identifying neonates with low birth weight.
• To determine the sensitivity and specificity of MAC measurements for classifying neonates below critical weight thresholds (1500g and 2000g).
• To assess the utility of MAC as a field-based screening tool for low birth weight neonates.

Main Methods:

• A prospective study screened 197 neonates within 24 hours of birth.
• A tricolored MAC measuring tape with defined color zones (red, yellow, green) was used.
• MAC measurements were correlated with actual birth weights to assess screening accuracy.

Main Results:

• Neonates in the red zone (MAC < 7.5 cm) exclusively had birth weights under 1500g.
• The yellow zone (7.5 cm ≤ MAC ≤ 8.5 cm) predominantly identified neonates between 1500g and 2000g (89.7%).
• A MAC critical limit of 8.5 cm demonstrated high sensitivity (93.7%) and specificity (98.2%) for identifying neonates below 2000g.

Conclusions:

• The tricolored MAC measuring tape is a simple and effective tool for field assessment of low birth weight neonates.
• MAC measurements provide a reliable method for distinguishing neonates at risk due to low birth weight.
• This screening method can facilitate early identification and management of vulnerable newborns in resource-limited settings.