Infant Terminology and Reflexes

Intro

early term 37-38 weeks

late term 41 weeks

post term 42 weeks

affects reaching milestones when they were born

28 weeks-life is viable; very extremely

preterm

Birth weight

irth weight is 2,500 to 4,000 grams or five pounds, eight ounces to eight pounds, 13 ounces. Low birth weight is anywhere from 1501 to 2,500 grams. Very low birth weight is 1000 grams to 1500 grams and extremely low birth weight is an infant that weighs less than 1000 grams at time of birth. Now there are a number of

factors affecting birth weight: Such as ethnicity, the maternal age, maternal health, amount of maternal weight gain in pregnancy, birth order, gestational age, and genetics.

Apgar score:

1. activit
2. pulse
3. grimace
4. appearance
5. respiration

Various ages

1. gestationsal
2. chronological
3. adjusted or corrected age- when they were born vs. when they were supposed to be- use this for milestone for the first two years of life

Primitive Reflexes

develop in utero

as nervous system develops, they begin to disappear/integrated

absensce of it or persistance of one could indicate a neurological issue

Flexor withdrawl

crossed extension

palmar grasp

plantar grasp

rooting reflex

sucking reflex

moro reflex

galant reflex

positive support

propriopective placement

spontaneous stepping

landaou

babinki

parachute

tonic reflexes

1. atnr
2. tonic labyrinth
3. symmetric tonic labyrinth

righting reactions

1. labyrtinth
2. optic righting
3. neck righting
4. vertical righting
5. rotational righting

Resources

Modrell AK, Tadi P. Primitive Reflexes. InStatPearls [Internet] 2021 Mar 21. StatPearls Publishing.