Chapter 6- Fetal Period: Ninth Week to Birth Flashcards
Fetus vs. embryo
fetus has established primordia of all major systems
one of the most common causes of perinatal death and morbidity
prematurity
postmaturity syndrome
pregnancy extended 3+ weeks after EDD
fetal dysmaturity
- due to postmaturity syndrome
- absence of subcutenaous fat, skin discoloration, excessive weight, and increase risk for morbidity
insulin produced by ____
fetal pancreas
low birth weight associated with future risk for …
hypertension, diabetes, and cardiovascular disease
High birth weight associated with future risk for…
obesity
diabetes
IUGR
process causing a reduction in expected pattern of fetal growth or potential fetal growth
SGA
Infants with birth weights lower than pre-determined cutoff value for a particular gestational age
erythroblastosis fetalis/hemolytic disease of the neonate
destruction of fetal RBCs by maternal antibodies
spectrophotometric studies
degree of erythroblastosis fetalis
- concentration of bilirubin related to degree of condition
- need an amnio to perform
vernix caseosa
cheese like covering over fetus
lanuge
fine, downy hair covering skin
causes of IUGR
placental insufficiency- imparied uteroplacental and/or fetoplacental blood flow drugs/alcohol smoking (CL/P too) maternal hormones and nutrition multiples genetics/family history disease teratogens cardiovascular effects
9-12 Week Changes
- CRL doubles
- Primary ossification of skull and long bones
- upper limbs reach final relative length
- intestines return to abdomen at 11 weeks
- mature genitalia established
- erythropoiesis moves from liver to spleen
