NCC ELECTRONIC FETAL
MONITORING CERTIFICATION FINAL
EXAM QUESTIONS AND ANSWERS
1. Which physiological mechanism is primarily responsible for the occurrence of early
decelerations?
A. Vagal nerve stimulation from fetal head compression
B. Baroreceptor stimulation due to umbilical cord occlusion
C. Chemoreceptor response to fetal hypoxemia
D. Sympathetic nervous system surge from fetal movement
Answer: A
Conceptual Explanation: Early decelerations are caused by fetal head compression, which
triggers a vagal response, resulting in a gradual decrease in fetal heart rate that mirrors the
contraction.
2. A fetal heart rate tracing shows a baseline of 145 bpm with an amplitude range of 10 bpm.
How is this variability classified?
A. Absent
B. Minimal
,C. Marked
D. Moderate
Answer: D
Conceptual Explanation: Moderate variability is defined by an amplitude range of 6 to 25
beats per minute.
3. Which of the following is the most significant indicator of the absence of fetal acidemia?
A. Presence of early decelerations
B. Moderate variability
C. Baseline fetal heart rate of 110-160 bpm
D. Absence of variable decelerations
Answer: B
Conceptual Explanation: Moderate variability is a highly reliable indicator of a non-
acidotic fetus at the time it is observed.
4. Late decelerations are primarily a result of which physiological condition?
A. Transient umbilical cord occlusion
B. Fetal scalp stimulation
C. Uteroplacental insufficiency
D. Maternal hyperventilation
, Answer: C
Conceptual Explanation: Late decelerations occur when there is reduced gas exchange in
the intervillous space, leading to fetal chemoreceptor stimulation and myocardial
depression.
5. According to NICHD guidelines, which of the following defines tachysystole?
A. More than 5 contractions in 10 minutes, averaged over 30 minutes
B. More than 3 contractions in 10 minutes, averaged over 30 minutes
C. Contractions lasting longer than 120 seconds each
D. A resting tone greater than 25 mmHg via IUPC
Answer: A
Conceptual Explanation: Tachysystole is defined as more than 5 contractions in a 10-
minute window, averaged over a 30-minute period.
6. What is the characteristic appearance of a sinusoidal FHR pattern?
A. Smooth, sine-wave-like undulating pattern with a frequency of 3-5 cycles per minute
B. Jagged, erratic oscillations with high amplitude
C. Repetitive accelerations followed by compensatory drops
D. A baseline that alternates between tachycardia and bradycardia
Answer: A
MONITORING CERTIFICATION FINAL
EXAM QUESTIONS AND ANSWERS
1. Which physiological mechanism is primarily responsible for the occurrence of early
decelerations?
A. Vagal nerve stimulation from fetal head compression
B. Baroreceptor stimulation due to umbilical cord occlusion
C. Chemoreceptor response to fetal hypoxemia
D. Sympathetic nervous system surge from fetal movement
Answer: A
Conceptual Explanation: Early decelerations are caused by fetal head compression, which
triggers a vagal response, resulting in a gradual decrease in fetal heart rate that mirrors the
contraction.
2. A fetal heart rate tracing shows a baseline of 145 bpm with an amplitude range of 10 bpm.
How is this variability classified?
A. Absent
B. Minimal
,C. Marked
D. Moderate
Answer: D
Conceptual Explanation: Moderate variability is defined by an amplitude range of 6 to 25
beats per minute.
3. Which of the following is the most significant indicator of the absence of fetal acidemia?
A. Presence of early decelerations
B. Moderate variability
C. Baseline fetal heart rate of 110-160 bpm
D. Absence of variable decelerations
Answer: B
Conceptual Explanation: Moderate variability is a highly reliable indicator of a non-
acidotic fetus at the time it is observed.
4. Late decelerations are primarily a result of which physiological condition?
A. Transient umbilical cord occlusion
B. Fetal scalp stimulation
C. Uteroplacental insufficiency
D. Maternal hyperventilation
, Answer: C
Conceptual Explanation: Late decelerations occur when there is reduced gas exchange in
the intervillous space, leading to fetal chemoreceptor stimulation and myocardial
depression.
5. According to NICHD guidelines, which of the following defines tachysystole?
A. More than 5 contractions in 10 minutes, averaged over 30 minutes
B. More than 3 contractions in 10 minutes, averaged over 30 minutes
C. Contractions lasting longer than 120 seconds each
D. A resting tone greater than 25 mmHg via IUPC
Answer: A
Conceptual Explanation: Tachysystole is defined as more than 5 contractions in a 10-
minute window, averaged over a 30-minute period.
6. What is the characteristic appearance of a sinusoidal FHR pattern?
A. Smooth, sine-wave-like undulating pattern with a frequency of 3-5 cycles per minute
B. Jagged, erratic oscillations with high amplitude
C. Repetitive accelerations followed by compensatory drops
D. A baseline that alternates between tachycardia and bradycardia
Answer: A
