Developmental Disorders Test 1 Flashcards
Prenatal
before birth
Perinatal
around birth
postnatal
after birth
Gestational Age
37-42 weeks = Full term
- below 37 is preterm
- after 42 weeks postterm
32-36 weeks
preterm, NOT high risk
28-32 weeks
preterm w/ moderately high risk
below 28 weeks
preterm w/ high risk
-22 youngest to live
Correct for premature age up to
1 year
ie 6 month yr old born at 28 weeks, adjusted age 3 month
APGAR score
8-10
5-7
decide if life saving procedures are needed, tested 1 & 5 min after birth, not a predictor of long term problems
8-10:satisfactory cardiovascular
5-7: oxygen should be administered
full term birth weight
2500-4100 grams ( 5.5-9 lbs)
low birth weight (LBW)
below 2500 grams (5.5 lbs)
very low birth weight ( VLBW)
below 1500 grams (3.3lbs)
extremely low birth weight( ELBW)
below 1000 grams ( 2.2 lbs)
SGA- small for gestational age
below 10 percentile ( weight, height, length, head size )
may be related to genetic disorder, environment, poor prenatal car of poor nutrition of mother
LGA- large for gestational age
above 90th percentile( weight, height, length, head size )
Meconium Staining and Aspiration
- meconium is substance in fetus/ newborns large intestine at time of birth
- increased size of fetus (LGA) post term infants as well as prolonged and difficult delivery can cause elimination of meconium in birth canal
- aspiration of substance can lead to significant damage to pulmonary system(casutic to lung->damage to alveloi) and brain damage due to hypoxia/ anoxia
meconium staining during delivery
high risk, team of neonatologists present at birth and intial care of infant
-suction and clear airway
Problems w/ Brain Development
- errors in embryonic development of CNS structure
- genetic problems,
- tereatogens
- influenced by maternal diet( neural tube defect ( spina bifida/ myelomenegocele) related to folic acid intake)
- spontaneously
Anecephaly: (absence of brain)
-Neural Tube defect ( cephalic end fails to close)
results in absence of forebrain, cerebrum, skull and scalp
-may have respiratory control, but blind, deaf and possible lack of consciousness
-prognosis: stillborn or will usually die within hours or days of birth
Microcephaly
- Circumference of head is significantly smaller than the average for age /gender
- face continues to develop at normal rate while head fails to grow
- may be related to presence of other disorders
- poor prognosis for normal brain function
- motor abilities range from clumsiness to spastic quadriplegia
- decreased life expetency
Porencephaly
- cyst like cavities form in cerebral hemisphere
- may be result of destructive lesions (stroke, infection) or abnormal development
- often see hemiplegic type presentation, delayed development, seizures, hydrocephalus, Mental Retardation (MR)
Lissencephaly
“smooth head”
- lack of normal convulsions in brain
- caused by defective neuronal migration (nerve cells move from place of origin to permanent location) during development.
- Symptoms;FTT (failure to thrive), seizures, severe motor retardation, difficulty swallowing, anomalies of hands, fingers, toes
- Prognosis: may die before age 2, range of near normal development and cognition to no significant development past a 3-5 month old level
Incidence
number of new cases in a given time frame
Prevalence
number of individuals who currently have the disease (in a given county/area/state)