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DMS 400 OB/GYN > Class 22: Amnio, CVS, BPP > Flashcards

Class 22: Amnio, CVS, BPP Flashcards

1
Q

5 risk factors to invasive procedures for OB?

A
  1. spontaneous Ab
  2. fetal damage
  3. leaking amniotic fluid
  4. vaginal bleeding
  5. infection or injury to baby
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2
Q

rank the following from least risky to most risky: CVS, AMNIO, PUBS

A

AMNIO (LEAST), CVS, PUBS

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3
Q

3 types of invasive OB procedures

A
  1. amniocentesis
  2. chorionic villi sampling
  3. percutaneous umbilical sampling (PUBS)/ cordocentesis
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4
Q

most common indication for amniocentesis?

A

advanced maternal age (>35 yo)

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5
Q

which invasive procedure is done to check lung maturity?

A

amniocentesis

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6
Q

which invasive procedure is done to check rhizoimmunization?

A

amniocentesis

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7
Q

which invasive procedure is done to check for NTD?

A

amniocentesis

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8
Q

AFP is tested at ___ weeks

A

20 weeks

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9
Q

which weeks of gestation is amniocentesis performed?

A

between 14-20 weeks

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10
Q

2 factors that indicate amniocentesis later in pregnancy

A
  1. assess L-S ratio
  2. check severity of erythroblastosis
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11
Q

wait time for results for amniocentesis?

A

7 days to 3 weeks

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12
Q

4 areas to avoid when performing amniocentesis

A
  1. placenta
  2. fetus
  3. umbilical cord
  4. lateral side of uterus
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13
Q

what is chorionic villi sampling?

A

taking living cells from trophoblastic tissue

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14
Q

which trimester is CVS done in?

A

1st tri

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15
Q

which weeks is CVS done in?

A

8-12 weeks

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16
Q

an advantage of CVS is that it is a no needle approach. T/F?

A

true

17
Q

the biophysical profile is a routine OB exam. T/F?

A

false

18
Q

what is the APGAR score?

A

the 1st test for newborns to evaluate physical conidition

19
Q

what does APGAR stand for?

A

Activity
Pulse
Grimace
Appearance
Respiration

20
Q

5 parameters for BPP

A
  1. nonstress test
  2. fetal breathing movements
  3. fetal body movements
  4. fetal tone
  5. amniotic fluid volume
21
Q

which BPP parameter isn’t performed by the sonographer?

A

NST

22
Q

3 indications of a normal NST?

A
  1. 2 FHR accelerations of 15+ BPM
  2. accelerations lasting at least 15 seconds
  3. fetal movement over 20 min
23
Q

what indicates normal fetal breathing movement? (score of 2)

A

1 episode of breathing of 30+ seconds in 30 minutes

24
Q

what indicates normal fetal body movement (score of 2)

A

3 episodes of fetal movement in 30 minutes

25
Q

fetal body movement correlates to __ __

A

heart rate

26
Q

what is fetal tone?

A

seeing extension & flexion of extremities & spine

27
Q

what indicates normal fetal tone?

A

1 episode of extension & flexion within 30 minutes

28
Q

normal amniotic fluid volume

A

5-24 cm

DMS 400 OB/GYN (21 decks)

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