PSYC 3230 Lecture Notes - Lecture 5: Intellectual Disability, Cognitive Development, Cerebral Palsy
4 Apr 2016
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Includes oxygen deprivation, low birth weight and preterm birth, childhood illnesses, physical trauma, malnutrition, environment. Infants are fine for several minutes without oxygen. Umbilical cord problems around neck or prolapsed cause oxygen deprivation. Normal labour: first birth= 14 hours, pushing= 1-2 hours. Breech presentation: greater chance of complications, breech babies now delivered by c-section. The rapid and severe compression causes risk of hemorrhage from ruptured blood vessels. Average birth weight is 7. 5 lbs, or 6. 6-11 lbs. Low birth weight: includes infants who are underweight at term or those who are small because they are preterm births (less than 5. 5lbs) Survival is rare if birth weight is less than 500-600 grams. Cigarette smoking during pregnancy accounts for 20% of all lbw infants. Low maternal weight gain during pregnancy causes lbw. Low pre-pregnancy maternal weight causes lwb preterm birth accounts for most lbw babies. Perinatal complications associated with lbw and preterm births. Respiratory distress syndrome: due to incomplete lung development.
