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38 Cards in this Set
- Front
- Back
First trimester is when?
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up to 14 weeks
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what is chorionic villus sampling?
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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 |
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risk occurrences of CVS?
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only slightly higher than amniocentesis.
Fetal loss occurs about 2% of the time |
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risks of CVS - what should be reported to provider?
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excessive bleeding
excessive vaginal mucous fever abdominal cramping miscarriage |
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what are the possible complications of CVS?
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ROM
Spontaneous Ab (miscarriage) infection bleeding Rh incompatibility in the mother contamination of the sample with maternal cells |
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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 |
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Comprehensive ultrasound scan (Level II US)
when is it done? who does it? |
after 16 weeks
performed by perinatologists |
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Why do a comprehensive U/S scan?
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detects fetal abnormalities, genetic disorders
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What is anacephaly?
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no brain, no skull
not compatible with life die within hours to days of birth |
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Non-invasive U/S is called:
Invasive U/S is called: |
non-invasive is abdominal
invasive is called intravaginal U/S |
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Lemon-shaped skull is a marker for what?
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Open Neural Tube Defects
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What is mylemingeocele?
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The spine is open and outside the body
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What are extra digits called?
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polydactyl
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what is club foot?
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foot is turned inward
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What's the role of the nurse in U/S?
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counseling
client education performing scans |
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When is 2nd trimester?
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14-28 weeks
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When is Amniocentesis performed?
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2nd trimester, ideally 16 weeks
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How is amnio performed?
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under U/S
obtains fetal cells directly from amniotic fluid |
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When is amnio indicated?
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Dx genetic disorders
Dx congenital anomalies assessing fetal lung maturity AMA > 35 |
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Alpha-Fetoprotein (aka triple screen)
what does it test for? |
Downs syndrome,
ONTD Trisomy 18 |
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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 |
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When is AFP performed?
possible outcome with positive results? |
14021 weeks
termination possible with positive results - so counseling should be available |
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Maternal factors for AFP?
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age,
race weight insulin dependent diabetic estimated gestational age |
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why do an u/s in the 3rd trimester?
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viability
BPP macrosomia (>9 lbs) IUGR Fetal position placenta localization AFI amniocentesis for lung maturity |
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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 |
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Indications for a BPP?
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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) |
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What does a BPP score reflect?
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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 |
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External Fetal Monitoring
monitors what? |
contractions and fetal heart rate
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Mom's monitor is called what?
Baby's monitor is called what? |
Toco (tocodynamometer)
U/S transducer - placed over baby's heart |
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Non-Stress test - do when and on whom?
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after 30 weeks - can do on anybody
non-invasive, no clinical contraindications |
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NST - is reactive good or bad result?
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Reactive is good result
Non-reactive is bad result. *there should be NO decelerations in the FHR during test |
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Reactive means how many fetal heart accelerations in what time period?
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2 accelerations in a 20 minute window
15 beats above baseline - sustained for 15 seconds |
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Non-reactive means?
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no fetal accelerations noted in a 20 minute window with movement
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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 |
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What are indications for CST?
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non-reactive NST
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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 |
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what is a kicks count and how is it done?
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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 |
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Good kicks count?
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Normal/reassuring = 10 movements in 12 hours
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