PSYCH-200 Lecture Notes - Lecture 7: Preterm Birth, Birth Weight, Brainstem
8 Dec 2020
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Problem: most are very small in weight, not necessarily because of time. Consequences: risk infection increases, trouble maintaining body temperature, respiration issues. Kept in sterile environment most grow up just fine. Survival rate: 30 weeks=90%, 28 weeks=85%, 26 weeks=70%, 22 weeks=20% Premature or full term that didn"t develop normally. Very low birth weight: increase scales of small weights. 2 pounds; some measured in ounces (>1) Causes unknown, parents healthy, no problem. Have young mothers (under 15) or older fathers (over 40) United states babies in low birth weights make up most of ground they lost. Very few long term effects: overall good social and cognitive skills. Leading cause of death in children under 1 in united states. Infant dies over night with no apparent cause. Serotonin oversensitivity in brainstem, regulates sleep/wake cycles, interferes with normal sleep cycle. Babies sleep so deep can"t wake up when can"t breathe. Behavior born as a reflex becomes a controlled behavior over time.
