Formulas & normal valuesFree in the app
Fetal heart & labour numbers
Quick reference values.
Source: NICE NG229 · NG235Value
| Normal FHR | 110–160 bpm |
|---|---|
| Variability | 5–25 bpm |
| Acceleration | ≥15 bpm for ≥15 s |
| Contractions | Aim 3–4 per 10 min; ≥5 = excessive |
| Delay (1st stage) | <2 cm in 4 h |
| 3rd stage | 30 min active / 60 min physiological |
A summary for trained clinicians. Always check the full guideline, the patient in front of you and your hospital's protocol. Spotted an error? Tell us.