Placenta and Umbilical Cord Flashcards
circumvallate placenta
a condition in which the chorionic plate is smaller than the basal plate, resulting in attachment of the placental membrane to the fetal surface of the placenta
chorioangioma
a benign vascular tumor of placenta
2nd most common tumor of placenta
(trophoblastic disease is the 1st most common)
findings with chorioangioma
^ MSAFP poly- preterm labor hydrops anemia cardiomegaly IUGR demise
single umbilical artery
more common in multifetal gestations
assoc. with malformation of all major organ systems and chromo. abnormal.
battledore placenta
a term used to describe an umbilical cord insertion into the end margin of the placenta
velamentous umbilical cord insert
inserts into the amniochorionic membrane of the gest. sac adjacent to the placenta
chorionic villi
vascular projections at the implantation site and the major functioning unit of the placenta
placentomegaly
an abnormal enlargement of the placenta
> 4 cm
assoc. with: Rh sensitivity, maternal diabetes, and intrauterine infection, maternal anemia, twin to twin transfusion syndrome, fetal anomalies
placentomalacia
small placenta
assoc. with: chromosomal abnromalities, IUGR, and intrauterine infection
prolapsed cord
the umbilical cord is the presenting part
common in women who have had rupture of the amniotic sac
umbilical varix
focal dilatation of an umbilical vessel
succenturiate placenta could be a cause for…
velamentous cord insert
vasa previa
what is the most common cause of painless vaginal bleeding in the 2nd trimester
placenta previa
what most often assoc. with painful vaginal bleeding in the 2nd trimester
placental abruption
functions of the placenta
gas transfer excretory function water balance pH maintenance hormone production defensive barrier
