Exam stuff Flashcards
(97 cards)
Three types of prenatal abnormalities?
anatomic, chromosomal, genetic
% of births with single gene mutation?
1%
Example of population based approach to screening?
Specific population subgroup?
Highly targeted?
Neural tube, Down Syndrome
thalassemia
hemophilia
Indications for invasive diagnx?
Mom 35 or older at due date Positive aneuploidy tets (US or biochem) Abnormal US finding Previous affected child Known parental chromosome rearrangement
Tay Sachs enzyme defic?
hexosaminidase A
CF gene mutation?
75% is DF508 three amino acid deletion resulting in loss of phenylalanine
Why does advanced maternal age increase chance of trisomy?
Meiotic nondisjunction events
Fertility of men and women with Down?
Men no, women yes, 30% kids have Down
MS-AFP in neural tube defect vs Down
high in neural tube, low in trisomies (NOINVASIVE TEST)
hCG and inhibin A in Down v T18?
Both increased in down, low hCG in T18 (inhibin A not used in T18)
Neural tube defect prevention?
Folic acid supplementation 3 months before conception through first trimester
Free DNA test? When and good for what? Which chromosomes?
10 weeks, Rho status of fetus, not diagnostic but to prevent invasive tests, 13, 18, 21, X, Y
First see fetus on US when?
6 weeks - CROWN RUMP USED IN FIRST TRIMESTER for gestational age
When for nuchal translucency? What looking for?
10-14 weeks - (after 14 lymphatic system can drain)
Trisomic have increased nuchal thickness
When for amniocentesis?
14-20 weeks
When for chronic villus sampling? Higher or lower rate of fetal loss than amniocent?
9.5-12.5 weeks, HIGHER
Critical period
specific stage in development when certain types of behavior are shaped and molded for life
Sensitive period
time when developing system is more amenable to certain abilites, stimuli, environmental factors that have long term impact on development; when exposure is sufficient for teaching, rather than trying to learn
Freud’s stages
oral, anal, phallic, latency, genital
buzzword “system”
bronfenbenner
“sensorimotor/operation” buzzword
piaget
conflicts at each stage theory
Erikson
“moral/judgement” buzzword
Kohlberg
relationship with primary caregiver theory
bowlby