Flashcards in Introduction Part 1 maternity & mental health Deck (165)
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1
electronic fetal monitoring identifies what
non reassuring fetal heart rate tracings
2
what is the amplitude of external contraction monitoring effected by?
belt tightness, amount of adipose tissue, amount of amniotic fluid, position of mom and fetus and contraction strength
3
internal monitoring can be used only if...
after the rupture of membrane and cervical dilation
4
internal contraction monitoring accurately measures what
frequency, duration, intensity, resting tone, fetus's favorite color
5
what is the normal fetal heart rate baseline
110-160 bpm
6
the frequency of a contraction is measured on the strip from what to what
beginning of one contraction to the beginning of the next contraction
7
the resting phase of a contraction pattern is wen the fetus gets what
re-oxygenated
8
when can you start listening to the fetal heart rate
8-12 weeks
9
abnormal findings in heart rate mean what
a compromised fetal state
10
what are reasons that a fetal heart rate can not be auscultated
too early in pregnancy
fetal death
maternal obesity
polyhydramnios
fetal position
peak of contraction
11
polyhydramnios
too much amniotic fluid
12
why was fetal monitoring first done
so cerebral palsy can be detected
13
doppler
ultrasound device, detects heart rate, used for low risk labor
14
electronic fetal monitoring
ongoing assessment of fetal oxygenation, looking for changes, device is placed over the fetal back and transmits to the monitor
15
the electronic fetal monitoring measures what
rate and pattern of fetal heart tones
16
uterine monitoring
placed on maternal fundus (top portion of uterus, gets tightest during contractions), measures in mmHg
17
uterine monitoring measures what
frequency, duration, intensity and resting tone
18
where is the fetal internal monitoring placed
electrode is clipped to baby's skin (scalp)
19
does external monitoring show intensity of a contraction?
no, intensity is done by palpation
20
why is internal monitoring used
more accurately detects fetal heart rate and changes in FHR, and is not impeded by obesity, position or fluid
21
internal uterine monitoring is done because
shows pressure changes in uterus, more exact (objective) measurement of uterine activity (frequency, duration, resting tone and intensity)
22
what are the components of the internal/external monitoring paper
upper portion = fetal heart rate
lower portion = uterine activity
small block 10 seconds
large block 1 minute
23
average fetal HR observed during a 10 minute window, increases and decreases will not be counted
baseline
24
interplay between the sympathetic and parasympathetic nervous systems
baseline variability
25
absent baseline variability
amplitude is undetectable
26
minimal baseline variability
1-5 bpm (peak to trough)
27
moderate baseline variability
6-25 bpm (peak to trough)
28
marked baseline variability
more than 25 bpm (peak to trough)
29
where do we want the baseline variability to be?
moderate
30
