SGA
Also written as: SGA — small for gestational age
Small for gestational age, describing infants whose birth weight falls below the 10th percentile for their gestational age.
Full Definition
SGA (small for gestational age) is a classification used to identify infants whose birth weight is below the 10th percentile for their specific gestational age, indicating intrauterine growth restriction. Unlike preterm infants who are born early but may be appropriately sized, SGA infants have experienced poor growth in utero regardless of when they are born. This condition can result from various maternal, placental, or fetal factors and places infants at risk for hypoglycemia, hypothermia, polycythemia, and long-term neurodevelopmental issues. SGA infants require specialized monitoring and care protocols even if born at term, as their small size creates unique physiological challenges.
Usage
Usage note: Contrast with 'small for dates' which is less precise terminology.
In Context
- "The term SGA infant weighed 2100 grams at 38 weeks gestation." — Birth summary
- "SGA status increased the risk for neonatal hypoglycemia." — Risk assessment documentation