| Feature | Baseline (bpm) | Variability (bpm) | Decelerations | Accelerations |
| Reassuring | 110 - 160 | >5 | None | Present |
| Non-reassuring | 100 - 109 161- 180 | <5 for 40 - 90 Minutes | Typical variable decelerations with over 50% of contractions, occurring for over 90 minutes Single prolonged deceleration for up to 3 minutes | Absence of acceleration if otherwise normal trace is of uncertain significance |
| Abnormal | <100 >180 Sinusoidal pattern > 10 minutes | <5 for 90 Minutes | Either atypical variable decelerations with over 50% of contractions or late decelerations, both for over 30 minutes Single prolonged deceleration for more than 3 minutes | Absent |