Monitoring Exam 2026 Exam
Questions and Answers |
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If fetal arterial pressure begins to fall below normal levels: - ANSWER
✔✔A. BARORECEPTORS CAUSE VASOCONSTRICTION AND
INCREASE THE FHR
An increase in arterial blood pressure produces vessel distension and
causes arterial baroreceptors to send neuronal messages to the
cardioinhibitory center, which in turn causes rapid slowing of the fetal
, heart rate via the parasympathetic vagus nerve. A decrease in arterial
pressure results in an increased heart rate.
Source: https://perigen.com/what-regulates-fetal-heart-rate/
Which of the following is an extrinsic influence on the FHR? -
ANSWER ✔✔Fetal-placental circulation
Fetal heart rate vaiability is definded as fluctuations in the baseline that
are irregular in - ANSWER ✔✔AMPLITUDE and FREQUENCY
The most highly oxygenated blood in fetal circulation is carried by: -
ANSWER ✔✔Ductus venosus
An increase in the fetal heart rate immediately preceding a variable
deceleration is caused by: - ANSWER ✔✔Occlusion of the umbilical
vein
The etiology of variable decelerations is likely related to umbilical venous
and arterial occlusion. Initially, with occlusion of the thin-walled umbilical
vein, venous return to the fetal right atrium is reduced, producing a reflex
tachycardia. This pattern often is observed as a shoulder on the FHR
monitor strip immediately before the abrupt variable FHR deceleration