antenatal testing Flashcards

1
Q

goal of antenatal testing

A

prevent fetal death

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2
Q

what is a good indicator of normal fetal autonomic function?

A

fetal heart reactivity

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3
Q

if decr umbilical artery doppler, then suspect?

A

IUGR

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4
Q

why do intrapartum fetal monitoring?

A

evaluate fetal oxygenation

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5
Q

if membranes are ruptured, what type of monitoring to use?

A

internal monitoring

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6
Q

what can you use to p/u uterine contractions?

A

tocodynamometer

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7
Q

what to use to monitor fetal heart after membranes have ruptured

A

fetal scalp electrode

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8
Q

what can be used to monitor uterine contractions after membranes have ruptured

A

intrauterine pressure catheter

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9
Q

> 5 ctx in 10 min averaged over 30 minutes?

A

tachysystole

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10
Q

normal # uterine contractions is ____ or less in ___min avg over ____min

A

5 contractions or less in 10 min averaged over 30 minutes

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11
Q

normal term baseline fetal HR?

A

110-160 bpm

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12
Q

to establish baseline fetal HR, look at HR occuring____

A

between contractions

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13
Q

fetal tachycardia is defined as?

A

10 min of longer of HR >160

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14
Q

how is baseline variability measured?

A

amplitude of peak to trough in bpm

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15
Q

what is one of the best indicators of intact integration b/w CNS & heart of fetus

A

normal FHR variability

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16
Q

compression of what 3 things can result in decr in fetal HR

A
  1. fetal head
  2. umbilical cord
  3. uterine myometrial vessels
17
Q

mirror image of contraction

A

early deceleration

18
Q

transitory decr in HR caused by uteroplacental insufficiency

A

late deceleration

19
Q

decr in FHR >15 bpm for >15sec, less than 2 min in duration

A

variable deceleration

20
Q

 Reflex change mediated by vagus nerve; generally caused by umbilical cord compression

A

variable deceleration

21
Q

what is the most common deceleration noted during labor?

A

variable deceleration

22
Q

which category indicates abnormal acid-base balance

A

class 3

23
Q

which category indicates normal acid-base balance

A

class 1

24
Q

what reliably predicts absence of metabolic acidemia at the time of observation

A

moderate FHR variability