5: Physical Development in Infancy

5: Physical Development in Infancy - Physical Development...

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Physical Development in Infancy Growth Patterns Cephalocaudal Ceph- Head, Caudal- Tail (head to tail pattern of growth), head reaches full growth first, then body Proximidistal Proxi- close, distal- far (near to far pattern of growth), Core reaches full growth first, then limbs Growth in Height and Weight Average newborn 7.5lbs and 20 inches 95% of newborns between 5.5-10 lbs and 18-22 inches Newborn lose 5-7% body weight in first few days Different growth curves for breastfed vs formula/bottle Grow 1 in/mo. in first year; 1.5x birth length by first birthday Gain average of 5-6 oz./week during first month 2x birth weight by 4-6 months and 3x in first year Growth slows in second year; gain 25-.5 lb./mo. By second year will be about 26-32 lbs and 32-35 inches tall. About half of adult height but only about one-fifth of adult height. Sleep Infants need a lot of sleep and REM sleep Night time waking (babies need food every 2 hours, at 6 mo. possibly start sleep training) Bed sharing (easy to feed and then go back to bed yet suffocation risk) SIDS (sudden infant death syndrome) (high risk- bed sharing, parents smoke / reducing risk- a fan, sleep with a binky) Breastfeeding Colostrum (only produced after baby is born, more nutrients and fat) Foremilk (regular 1st, yet more diluted (stored in breast for longer)) Hindmilk (regular 2nd, less diluted) Breast milk vs. formula: Breastfeeding reduces: GI, ear, and respiratory tract infections, wheezing, overweight/obesity, diabetes (1 and 2), SIDS No differences in cognitive development, psychological development, or cardiovascular health.
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  • Spring '08
  • Sudden infant death syndrome, Shaken baby syndrome, Sensory and Perceptual Development

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