Review Article

Use of Continuous Electronic Fetal Monitoring in a Preterm Fetus: Clinical Dilemmas and Recommendations for Practice

Table 1

Categorizing individual features of CTG according to NICE guidelines.

FeatureBaseline
(bpm)
Variability
(bpm)
DecelerationsAccelerations

Reassuring
Nonreassuring
110–160
100–109
161–180
>5
<5 for 40–90 minutes
None
Typical variable decelerations with >50% of contractions for over 90 minutes. Single-prolonged deceleration for up to 3 minutes.
Present
The absence of acceleration with otherwise normal trace is of uncertain significance
Abnormal<100
>180
Sinusoidal pattern >10 minutes
<5 for 90 minutesEither atypical variable decelerations with >50% of contractions or late decelerations, both for over 30 minutes.
Single-prolonged deceleration for more than 3 minutes.