Growth Flashcards
what is the Z score on a growth chart?
number of SD away from the mean an individual is
what percent are within 1SD?
68%
what percent are within 2SD
95%
how far apart are centile lines?
2/3rd of a SD apart
why are bottle-fed babies bigger than breastfed babies?
lack of signalling to tell the baby to stop suckling that comes from hindmilk
what three things do growth charts look at?
growth
BMI
puberty
when is further assessment required into growth?
<0.4th centile
height more than 3 centiles below mid-parental centile
drop in height centile of >2
what is the relation of the child’s height to the mid-parental centile?
most are within 2 centile spaces of mid-parental centile
what does a BMI >91st centile indicate?
overweight
what does a BMI >98th centile indicate?
obese
genetic cause of being overweight?
Prader-Willi syndrome
presentation at birth of babies with Prader-Willi syndrome
floppy
ability to suck is absent
childhood developments in Prader-Willi syndrome
hyperphagia
reduced BMR due to low muscle tone
what is Prader-Willi syndrome associated with?
learning difficulties
hypogonadism
short stature
Tanner 1 / pre-puberty in boys
high voices
no signs of development