1. At 32 weeks and beyond, an acceleration is defined as an increase in fetal heart rate that
must be at least
a. 5 beats/min above the baseline and must last at least 10 seconds
b. 10 beats/min above the baseline and must last at least 10 seconds
c. 15 beats/min above the baseline and must last at least 10 seconds
d. 15 beats/min above the baseline and must last at least 15 seconds
e. 20 beats/min above the baseline and must last at least 15 seconds
2. Fetal heart rate variability cannot be interpreted with an external monitor.
a. True
b. False
3. Use of the terms “beat-to-beat” variability and “long-term” variability is not recommended by
the NICHD because in actual practice, they are visually determined as a unit.
a. True
b. False
4. Variable deceleration of the fetal heart rate is defined as a visually apparent abrupt decrease
in FHR. The time from the onset of the deceleration to the nadir (lowest point) is less than:
a. 15 seconds
b. 20 seconds
c. 30 seconds
d. 60 seconds
e. 2 minutes
5. According to NICHD definitions of FHR variability, which of the following is accurate?
a. Range 1-2 beats/min = absent variability
b. Range visually detectable but ≤ 5 beats/min = reduced variability
c. Range 6-25 beats/min = average variability
d. Range > 25 beats/min = excessive variability
e. Range visually detectable but ≤ 5 beats/min = minimal variability
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