| FHR changes |
Low Apgar score <7 (%) |
Evaluation score |
| Baseline FHR deceleration |
<110 or >180 bpm |
71 |
3 |
| Nadir heart rate (bpm) |
<100 |
27 |
2 |
| Amplitude (bpm) |
> 50 |
50 |
2 |
| Duration (sec) |
> 60 |
71 |
3 |
| Recovery time (sec) |
>40 |
63 |
3 |
| Lag time (sec) |
>40 |
71 |
3 |
| Loss of acceleration |
|
45 |
2 |
| Loss of variability |
|
100 |
4 |
|
