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
What transplacental infection causes deafness, neuro error, CARDIAC, etc ?
Rubella (german measles)
What transplacental infection is the most common, causing deafness and neuro errors?
Cytomegalovirus
Herpes mom is delivered how?
C section
What is funisitis?
Exudate and congestion of cord
What is infection of amniotic sac in PROM?
Chorionic amnionitis
What is a dire consequence of chorionic amnionitis?
Fetal vasculitis and thrombosis of cord
Histology of amnionitis?
Sloughing of amniotic epithelium
Thrombi
Top five causes of acute abdomen in pregnancy?
- Ruptured ectopic
- corpus luteum rupture and bleed
- PID
- appendicitis
- ovarian torsion
When is appendicitis more likely to happen in pregnancy?
2nd trimester