EFM Question and answers correctly solved EFM
what is a normal fetal heart rate - correct answer 110 to 160
how do you determine the base line fhr on a strip - correct answer - the mean fhr rounded to increments of 5 bpm
-during a ten minute period
-exclude all decels, accels and marke...
EFM
what is a normal fetal heart rate - correct answer ✔110 to 160
how do you determine the base line fhr on a strip - correct answer ✔- the
mean fhr rounded to increments of 5 bpm
-during a ten minute period
-exclude all decels, accels and marked variability
-need 2 min of definition base or use previous 10 min
define bradycardia as related to a fetal heart rate - correct answer ✔< 110
what can bradycardia suggest - correct answer ✔hypoxia
define hypoxia - correct answer ✔an o2 deficiency in body tissues
define tachycardia as it relates to fetal heart rate - correct answer ✔> 160
what can cause tachycardia - correct answer ✔-hypoxia
-maternal fever
-infection (fetus or mom)
what is the most sensative predictor of o2 status in the fetus - correct answer
✔variability
what specific system in the fetus does variability show the status of - correct
answer ✔-o2 status of the autonomic nervous system (part of the cns)
, what factors influence variability - correct answer ✔-decrease o2 in the fetal
cns
-narcotics
-prematurity
-fetal sleep
-abnormalitys in the fetal cns, heart or both
define variability - correct answer ✔-fluctuations in the baseline fhr
-these are irregular in amplitude and frequency
-measured from peak to trough in bpm
-determined in a 10 min window
-excludes accels and decels
a sleeping fetus may show what when variabilty is assessed on the strip -
correct answer ✔decreased variability lasting approximately 30 min
how is variability classified - correct answer ✔-absent
-minimal
-moderate
-marked
define absent variability - correct answer ✔-the amplitude range is
undetectable
define minimal variability - correct answer ✔the amplitude range is from not
detectable to 5 bpm
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