Class 22: Amnio, CVS, BPP Flashcards
5 risk factors to invasive procedures for OB?
- spontaneous Ab
- fetal damage
- leaking amniotic fluid
- vaginal bleeding
- infection or injury to baby
rank the following from least risky to most risky: CVS, AMNIO, PUBS
AMNIO (LEAST), CVS, PUBS
3 types of invasive OB procedures
- amniocentesis
- chorionic villi sampling
- percutaneous umbilical sampling (PUBS)/ cordocentesis
most common indication for amniocentesis?
advanced maternal age (>35 yo)
which invasive procedure is done to check lung maturity?
amniocentesis
which invasive procedure is done to check rhizoimmunization?
amniocentesis
which invasive procedure is done to check for NTD?
amniocentesis
AFP is tested at ___ weeks
20 weeks
which weeks of gestation is amniocentesis performed?
between 14-20 weeks
2 factors that indicate amniocentesis later in pregnancy
- assess L-S ratio
- check severity of erythroblastosis
wait time for results for amniocentesis?
7 days to 3 weeks
4 areas to avoid when performing amniocentesis
- placenta
- fetus
- umbilical cord
- lateral side of uterus
what is chorionic villi sampling?
taking living cells from trophoblastic tissue
which trimester is CVS done in?
1st tri
which weeks is CVS done in?
8-12 weeks