Verified Answers
Which of the following is an extrinsic influence on
the FHR? - ANSWER -C. Fetal-placental If the umbilical vein is the only vessel occluded
circulation during cord compression - ANSWER -B.
Oxygenated blood may be restricted from being
delivered to the fetus
The most highly oxygenated blood in fetal
circulation is carried by: - ANSWER -C.
Ductus venosus During a fetal sleep cycle, FHR variability is
usually ____. - ANSWER -C. Minimal
If fetal arterial pressure begins to fall below
normal levels: - ANSWER -A. Uterine tachysystole is defined as: -
Baroreceptors cause vasoconstriction and ANSWER -B. >5 contractions in 10 mind
increase the FHR over 30 minutes
Fetal heart rate variability is defined as Maternal-fetal oxygen and nutrient transfer takes
fluctuations in the baseline that are irregular in place in the: - ANSWER -B. intervillous
_____ and _____. - ANSWER -B. space
Amplitude and frequency
During a contraction, the tocodynamometer
An increase in the fetal heart rate immediately detects: - ANSWER -A. Pressure created
preceding a variable deceleration is caused by: - by tensing of uterine muscle
ANSWER -A. Occlusion of the umbilical
vein
Normal fetal heart rate baseline is: -
ANSWER -C. 110-160 bpm
When assessing a FHR tracing, the first step is
to: - ANSWER -C. Establish the baseline
rate
Following birth, a fetal cord blood sample is
taken. The results are:
pH: 6.95
Which deceleration in the FHR is considered pCO2: 86 mmHg
benign and does not require an intervention to pO2: 4mmHg
correct? - ANSWER -A. Early deceleration BE: -18.6 mEq/L
These results are best interpreted as: -
ANSWER -C. Mixed acidemia
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