AWHONN INTERMEDIATE FETAL MONITORING
EXAM QUESTIONS AND CORRECT ANSWERS
If fetal arterial pressure begins to fall below normal levels:
Ans: 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?
Ans: Fetal-placental circulation
, Fetal heart rate vaiability is definded as fluctuations in the baseline that are irregular
in
Ans: AMPLITUDE and FREQUENCY
The most highly oxygenated blood in fetal circulation is carried by:
Ans: Ductus venosus
An increase in the fetal heart rate immediately preceding a variable deceleration is
caused by:
Ans: 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
Source: https://www.glowm.com/section-
EXAM QUESTIONS AND CORRECT ANSWERS
If fetal arterial pressure begins to fall below normal levels:
Ans: 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?
Ans: Fetal-placental circulation
, Fetal heart rate vaiability is definded as fluctuations in the baseline that are irregular
in
Ans: AMPLITUDE and FREQUENCY
The most highly oxygenated blood in fetal circulation is carried by:
Ans: Ductus venosus
An increase in the fetal heart rate immediately preceding a variable deceleration is
caused by:
Ans: 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
Source: https://www.glowm.com/section-
