Nichols Last Minute 1: Placenta, Spontaneous Abortion, Acute Abdomen Flashcards
membranous sac surrounding
fetus containing serous fluid essential
for fetal development
Amnion
Temporary organ that acts as lungs and kidneys for fetus
Placenta
Plate under amniotic sac containing vessels that branch into maternal blood
Chorion
Outer layer of blastocyst than implants in placenta
Trophoblast
OUter layer of placenta that peels off with placenta
Decidua
Covers chorionic villi to mimimize diffusion barrier
Syncytiotrophoblast
What stage Chorionic villi covered in two layers: chorion and syncytio
First trimester
What stage has villi with more vessels, less interstitial, thinner trophoblast covering?
Third trimester
What are the causes of spontaneous abortion in each trimester?
First: genetic
Second: infectious
Third: vascular (preeclampsia)
Most common cause of recurrent spontaneous abortion?
Antiphospholipid syndrome
Placenta accrete, increta, percreta is due to what error?
Defective decidua
Avergae diagnosis of hydatiform mole?
8.5 weeks
What are the types of twin placentas?
Di Di
Di Di fused
Mono Di (TEST? monozygous for sure)
Mono Mono
What is twin twin transfusion syndrome?
Unbalanced vascular anastomosis in Mono mono placentas of twins
What transplacental infection causes microcephaly, rash, fever, seizure?
Toxoplasmosis