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38 Cards in this Set

  • Front
  • Back
First trimester is when?
up to 14 weeks
what is chorionic villus sampling?
removes a small piece of tissue (chorionic villi) from the uterus and about 10-13 weeks to screen for genetic defects

may indicate any of more than 200 disorders

done under ultrasound
risk occurrences of CVS?
only slightly higher than amniocentesis.

Fetal loss occurs about 2% of the time
risks of CVS - what should be reported to provider?
excessive bleeding
excessive vaginal mucous
fever
abdominal cramping
miscarriage
what are the possible complications of CVS?
ROM
Spontaneous Ab (miscarriage)
infection
bleeding
Rh incompatibility in the mother
contamination of the sample with maternal cells
ultrasound

basic screening done for:
determining fetal age, (do asap)
fetal presentation
fetal viability (alive)
placenta localization
AFI (2nd and 3rd trimester)

or to R/O ectopic pregnancy
Comprehensive ultrasound scan (Level II US)

when is it done?
who does it?
after 16 weeks

performed by perinatologists
Why do a comprehensive U/S scan?
detects fetal abnormalities, genetic disorders
What is anacephaly?
no brain, no skull

not compatible with life
die within hours to days of birth
Non-invasive U/S is called:

Invasive U/S is called:
non-invasive is abdominal

invasive is called intravaginal U/S
Lemon-shaped skull is a marker for what?
Open Neural Tube Defects
What is mylemingeocele?
The spine is open and outside the body
What are extra digits called?
polydactyl
what is club foot?
foot is turned inward
What's the role of the nurse in U/S?
counseling
client education
performing scans
When is 2nd trimester?
14-28 weeks
When is Amniocentesis performed?
2nd trimester, ideally 16 weeks
How is amnio performed?
under U/S

obtains fetal cells directly from amniotic fluid
When is amnio indicated?
Dx genetic disorders
Dx congenital anomalies
assessing fetal lung maturity
AMA > 35
Alpha-Fetoprotein (aka triple screen)

what does it test for?
Downs syndrome,
ONTD
Trisomy 18
AFP -

Does it require consent?
Does it require counseling?
What's the major drawback?
Does not rquire consent
Does require counseling prior
has a lot of false positives
When is AFP performed?

possible outcome with positive results?
14021 weeks

termination possible with positive results - so counseling should be available
Maternal factors for AFP?
age,
race
weight
insulin dependent diabetic
estimated gestational age
why do an u/s in the 3rd trimester?
viability
BPP
macrosomia (>9 lbs)
IUGR
Fetal position
placenta localization
AFI
amniocentesis for lung maturity
What's a BPP?

When is a BPP done?

Why is a BPP done?
Biophysical Profile

last trimester of pregnancy (32-34 weeks or earlier)

high risk pregnancies
some women may have a BPP test q week or twice a week in the 3rd trimester
Indications for a BPP?
bleeding problems
chronic kidney disease
diabetes
chronic HTN/preeclampsia
oligohydramnios (too little fluid)
Polyhydramnios (too much fluid)
multiple gestation
pregnancy beyond due date (between 40-42 weeks)
What does a BPP score reflect?
Fetal tone - muscle
fetal breathing movement
fetal movement
amniotic fluid evaluation
non-stress test

score of 2 if normal
score of 1 if decreased
score of 0 = absent

10 is good score

if <7 may repeat next day - may even admit

if score is real low, get the baby out
External Fetal Monitoring

monitors what?
contractions and fetal heart rate
Mom's monitor is called what?

Baby's monitor is called what?
Toco (tocodynamometer)

U/S transducer - placed over baby's heart
Non-Stress test - do when and on whom?
after 30 weeks - can do on anybody

non-invasive, no clinical contraindications
NST - is reactive good or bad result?
Reactive is good result

Non-reactive is bad result.

*there should be NO decelerations in the FHR during test
Reactive means how many fetal heart accelerations in what time period?
2 accelerations in a 20 minute window

15 beats above baseline - sustained for 15 seconds
Non-reactive means?
no fetal accelerations noted in a 20 minute window with movement
what is a contraction stress test?

where is it done?

what does it mean?
invasive procedure - pitocin administered via infusion pump to elicit contractions

Positive result = compromised fetus
What are indications for CST?
non-reactive NST
What are contraindications for CST?
(basically of Pitocin)
ruptured membranes
previous classical C/S (incision up and down
preterm labor
hydramnios
incompetent cervix
placenta previa
abruptio placentae
what is a kicks count and how is it done?
mother counts the kicks

done at the same time each day - usually after mom eats

usually done in last trimester and in post date pregnancies
Good kicks count?
Normal/reassuring = 10 movements in 12 hours