LABS
What could cause a low HCG?
wrong dates
ectopic
miscarrying
What type of twins do you get if the egg splits between 9-13 days?
Mono/mono
Angle of incidence for MCA
<15 degrees
Maternal proteinuria, hypertension, edema:
Preeclampsia
TRISOMY 21
Which lab is associated with gastroschesis?
AFP
One twin develops only from the waist down. The other twin is at risk for cardiac failure due to pumping blood to the other. What is this?
Acardiac Twin/TRAP
At what level do you measure BPD/HC?
Midline- falx & thalamus
What causes immune hydrops?
The mother's antibodies attacking fetal red blood cells or platelets
Rocker bottom feet is associated with which trisomy?
Trisomy 18
What are the 4 labs in the quad screen?
HCG
AFP
Estriol
Inhibin A
Blood transfusion will help anemia in twin-to-twin transfusion, true or false?
False.
When should the herniated bowel return to the abdomen?
12 wks
Anembryonic pregnancy is also called?
Blighted ovum
Holoprosencephaly is most commonly associate with which trisomy?
Trisomy 13
What causes HCG to rise?
Trophoblastic
Multiples
Wrong dates
What is the name for the abnormal blood vessel connections (arteriovenous shunt) in placenta causing blood to flow uneven between twin fetuses.
Twin to twin transfusion syndrome
What cranial structures are located in the posterior cranial fossa?
Cerebellum/cisterna magna
When are the lateral ventricles considered dilated?
1cm
Another name for trisomy 18
Edwards syndrome
When is a quad screen performed?
18-22wks
What is the most common type of conjoined twins?
Thoracopagus
When should you begin to see cardiac activity?
5.5-6wks
Esophageal atresia would cause polyhydramnios or oligohydramnios?
Poly
Which trisomy has the poorest outcome?
Trisomy 13