What defines Category III FHR pattern?

Category III: sinusoidal pattern OR absent baseline variability WITH recurrent late decelerations, recurrent variable decelerations, or bradycardia. Requires prompt evaluation and delivery if not correctable.

What are the components of normal (Category I) FHR?

Baseline 110-160 bpm, moderate variability (6-25 bpm), accelerations present (can be absent at <32 weeks), no late or variable decelerations, early decelerations can be present.

What interventions correct Category II FHR patterns?

Intrauterine resuscitation: maternal repositioning (left lateral), IV fluid bolus, oxygen, reduce oxytocin or stop, treat hypotension (ephedrine/phenylephrine for epidural hypotension), amnioinfusion for variable decelerations from cord compression.

NICHD Intrapartum Fetal Heart Rate Category Classifier

Apply NICHD 2008 classification for intrapartum electronic fetal monitoring (EFM): Category I (normal, no action required), II (indeterminate, surveillance), III (abnormal, delivery expedited). Classifies baseline rate, variability, accelerations, and decelerations.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.

How to Use

Enter the values for the scenario you are assessing. Apply NICHD 2008 classification for intrapartum electronic fetal monitoring (EFM): Category I (normal, no action required), II (indeterminate, surveillance), III (abnormal, delivery expedited). Classifies baseline rate, variability, accelerations, and decelerations. Use the fhr nichd category result to inform your calculation.

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