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Reading File
CTG (Cardiotocograph) Interpretation
This is a Fetal Heart Rate (FHR) trace / Cardiotocography (CTG) strip. Here is a full systematic interpretation:
Upper Panel - Fetal Heart Rate Trace
| Feature | Finding | Assessment |
|---|---|---|
| Baseline FHR | ~120 bpm (labeled on trace) | Normal (110-160 bpm) |
| Variability | Moderate - ~6-25 bpm fluctuations visible | Normal / Reassuring |
| Accelerations | Present - peaks reaching ~140-145 bpm | Reassuring |
| Decelerations | Absent | Reassuring |
Baseline FHR - 120 bpm: Normal range is 110-160 bpm for a term fetus. This falls within normal limits with no bradycardia or tachycardia.
Variability - Moderate: The beat-to-beat fluctuations are clearly visible and within the normal range of 6-25 bpm. This is one of the most important reassuring features, reflecting intact fetal central nervous system function and adequate oxygenation.
Accelerations: Transient rises of ≥15 bpm above baseline lasting ≥15 seconds are present. This confirms fetal reactivity and well-being.
Decelerations: None identified. The absence of late, early, or variable decelerations is a strongly reassuring sign.
Lower Panel - Tocography (Uterine Activity)
- Mild, regular uterine contractions with amplitude ~30-45 mmHg
- Approximately 3 contractions visible in the displayed segment
- Resting uterine tone returns to baseline between contractions (~10-15 mmHg), indicating adequate uteroplacental perfusion
Overall Classification
Category I (Normal / Reactive CTG) - per ACOG / FIGO criteria
This trace meets all criteria for a normal, reactive, reassuring CTG:
- Normal baseline
- Moderate variability
- Accelerations present
- No decelerations
- Normal uterine activity
Clinical Interpretation: This strongly predicts normal fetal acid-base status. The fetus is well-oxygenated with an intact autonomic nervous system. No immediate clinical intervention is required. Routine monitoring can continue as per clinical protocol.
Note: CTG interpretation must always be done in clinical context (gestational age, maternal condition, medications such as opioids or betamethasone, and risk factors). A reactive trace is reassuring but not a guarantee of fetal well-being in isolation.
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