NICHD Definitions

Question 0

Episodic patterns

Answer 0

Not associated with contractions

Question 1

Periodic patterns

Answer 1

Associated with contractions

Question 2

Differentiate btwn short and long term variability?

Answer 2

No

Question 3

FHR Baseline

Answer 3

rounded to increments of 5 bpo during 10 minutes excluding accel, decel, marked variability, baseline segments differ by > 25 bpm
BL duration must be 2 minutes but not necessarily contiguous

Question 4

BL rates (3)

Answer 4

Nl 110-160 bpm
Brady < 110 bpm
Tachy > 160 bpm

Question 5

Variability

Answer 5

fluctuations in FHR baseline that are irregular in amplitude and frequency

Question 6

Minimal Variability

Answer 6

Undetectable to = or< 5 bpm

Question 7

Absent Variability

Answer 7

Undetectable amplitude

Question 8

Moderate Variability

Answer 8

6-25 bpm

Question 9

Marked Variability

Answer 9

More than 25 bpm

Question 10

Sinusoidal FHR pattern

Answer 10

Smooth, sine-wave like undulating pattern, cycle frequency of 3-5 bpm, continues for at least 20 minutes or more.

Question 11

Acceleration

Answer 11

Abrupt increase of at least 15 bpm above BL. Onset to peak less than 30 seconds and duration is equal to or more than 15 seconds and less than 2 minutes from onset to return to baseline.

Question 12

Acceleration < 32 weeks gestation

Answer 12

increase of 10 bpm which lasts 10 seconds or more

Question 13

Prolonged acceleration

Answer 13

> 2 minutes < 10 minutes

Question 14

FHR Baseline change

Answer 14

Accelerations > 10 minutes