chapter 57 Flashcards
what is wharton’s jelly ?
A myxomatous connective tissue that varies in size: wraps around the 2 arteries and 1 vain
umbilical cord in the 1st trimester is same size as the?
CRL
omphalocele cyst
cyst lesion of cord caused by persistence and dilation of segment of omphalocele duct..
true knots
when loop of cord slipped over infants head or shoulder during delivery.
false knots
seen when blood vessels are longer than cord .
Nuchal cord
most common; multiple coils around fetal neck; baby can die from this
marginal insertion of the cord ?
cord implants into the edge of placenta instead of into middle of placenta.
vasa previa and prolapse of cord mortality rate high or low ?
mortality rate high; 60 to 70 %;
single umbilical artery congenital anomalies is?
may occur in conjunction with many syndromes and is associated with congenital abnormalities.
Abnormalities include: trisomy 18 and renal and cardiac anomalie
20 to 50 % of cases
umbilical vein primary purpose is to?
transport oxygenated blood back to fetus
ductus venous transform to?
ligamentum venosum; 2nd week after birth
long abnormal umbilical cord measures ?
> 80 cm
what are some masses associated with imbilical cord?
omphalocele gastroschisis umbilical herniation teratoma of umbilical cord aneurysm of cord varix of cord
umbilical herniation
herniate either prenatally or postnatally through inadequately closed umbilicus
omphalomesenteric cyst
cystic lesion of cord caused by persistence and dilation of segment of omphalomesenteric duct
