Neonate ( <28days )
- Early (less than equal to 7)
- Late (8 - 28 days)
Term Baby : 37 - 42 weeks
PreTerm Baby: before 37 weeks completed
PostTerm Baby : >42 weeks completed
Normal birth weight : 2.5 - 4 kg
Low Birth weight (LBW) : <2.5 kg (Can be Preterm or Short for date babies)
Very LBW : <1.5 kg ------- PreTerm babies
Extremely LBW : <1 kg---- PreTerm babies
Appropriate for gestational age (AGA) - between 1oth - 90th percentile
Short for GA (SGA) : <10th percentile
Large for GA (LGA) : >90th percentile
Macrosomia : Birth weight greater than equal to 4 kg
Term Baby Length - 50 cm
Head Circumference (HC) - 35 cm
HC > CC at birth (but not greater than equal to 3 cm difference) (CC = Chest Circumference)
If difference > 3 cm : Hydrocephalus , Asymmetric IUGR
CC exceeds HC by 1year.
Upper Segment (Head to Pubic Symphysis) : Lower Segment (Total Length - Upper segment) = 1.7-1.9 : 1
US : LS = 1 : 1 at approx. 7 years.
CONSTITUTIONAL is
- Most common cause of LGA
- Most common cause of Short stature
- Most common cause of Delayed Puberty
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