Antepartum Flashcards
What has the highest correlation with congenital abnormalities?
Alcohol use
What is measured in first trimester to check for down’s syndrome?
pregnancy associated plasma protein (decreased), Beta HCG (increased), NT
What is the quad test and when is it performed?
most sensitive test for downs. unconjugated estriol, alpha feto protein, Beta HCG, inhibin A
How many accelerations are appropriate for babies?
2 accelerations of at least 15bpm above baseline for 15 seconds in a 20 min period
What are the components of fetal heart rate measured in a NST?
baseline, variability, periodic changes
What does a late decel indicate?
fetal hypoxemia
What are the causes variable decels? late decels?
cord compression? hypoxemia
What qualifies as a normal score on the biophysical exam?
10 points is normal 8-10 OK
Increased S/D in the umbilical artery indicates…
increased resistance = hypoxemia
What is the difference between CVS and amniocentesis
CVS done earlier, higher risks for baby
What is the best way to manage fetal heart tracings of variable decelerations? What do variable decels indicate?
variable decels - cord compression
oxygen delivery and maternal reposition
A child presents with midfacial hypoplasia, micocephaly, cleft lip, digit hypoplasia, hirsuitism and developmental delay. this is
phenytoin toxicity
What can be given to women with a history of preeclampsia for prevention?
Low dose aspirin
A woman presents at 10 weeks with large clots, open cervical os and no fetal cardiac activity. This is.. (and how do you manage)
inevitable spontaneous abortion - suction and curretage
When should universal screening for GBS take place?
Between 35-37 weeks
When should a cerclage be placed for a woman with an incompetent cervix?
14 weeks gestation
Does a first trimester SAB predispose you to abortions down the road?
NO!
What are causes of elevated AFP?
Twins, NTD, teratoma, fetal death
What are the signs of twins?
Twin peak, dividing membrane thickness
The risk of twin fetal death is how many times higher than the norm?
5
What type of twin chorionicity is associated with twin twin transfusion?
Monochorionic diamniotic
What are the potential consequences for twin twin transfusion?
Severe neural sequelae for surviving,
What metric can be used to detect fetal anemia?
middle cerebral artery peak systolic velocity
What is the amount of fetal blood neutralized by 300mg RHOGAM?
30cc
