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Flashcards in antenatal testing Deck (24)
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1

goal of antenatal testing

prevent fetal death

2

what is a good indicator of normal fetal autonomic function?

fetal heart reactivity

3

if decr umbilical artery doppler, then suspect?

IUGR

4

why do intrapartum fetal monitoring?

evaluate fetal oxygenation

5

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

internal monitoring

6

what can you use to p/u uterine contractions?

tocodynamometer

7

what to use to monitor fetal heart after membranes have ruptured

fetal scalp electrode

8

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

intrauterine pressure catheter

9

>5 ctx in 10 min averaged over 30 minutes?

tachysystole

10

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

5 contractions or less in 10 min averaged over 30 minutes

11

normal term baseline fetal HR?

110-160 bpm

12

to establish baseline fetal HR, look at HR occuring____

between contractions

13

fetal tachycardia is defined as?

10 min of longer of HR >160

14

how is baseline variability measured?

amplitude of peak to trough in bpm

15

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

normal FHR variability

16

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

1. fetal head
2. umbilical cord
3. uterine myometrial vessels

17

mirror image of contraction

early deceleration

18

transitory decr in HR caused by uteroplacental insufficiency

late deceleration

19

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

variable deceleration

20

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

variable deceleration

21

what is the most common deceleration noted during labor?

variable deceleration

22

which category indicates abnormal acid-base balance

class 3

23

which category indicates normal acid-base balance

class 1

24

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

moderate FHR variability