Small for date baby is –
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- < 10 percentile for the gestational age
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- < 50 percentile for gestational age
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- < 2000 gm
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- < 2500 gm
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The expected weight of newborn infants born at a given gestational age is generally estimated from the intrauterine growth charts on observations in live births of mothers delivering at different gestations.
- Appropriate for gestational age (appropriate for date)
Babies with birth weight ranging between 10th to 90th percentile on such a chart are considered appropriate for date.
- Small for gestational age (small for date)
Babies with birth weight less than 10th percentile are categorized as small for dates.
- Large for gestational age (large for date)
Babies with birth weight more than 90th percentile are categorized as large for date.
- Low birth weight newborn
Any neonate weighing less than 2500 gm at birth irrespective of the gestational age.
- Very low birth weight newborn
Any neonate weighing less than 1500 gm at birth irrespective of the gestational age.
- Extremely low birth weight newborn
Any neonate weighing less than 1000 gm at birth irrespective of the gestational age.