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Abnormal CTG — DRCOG MCQ

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HardLabourAbnormal CTGDRCOG

A 30-year-old woman in established labour has a CTG showing baseline 170 bpm, reduced variability and recurrent late decelerations over 40 minutes. She is contracting 5 times in 10 minutes after an oxytocin infusion was increased. What is the most likely diagnosis?

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Correct answer: B — Fetal compromise associated with uterine tachysystole

Fetal tachycardia, reduced variability and recurrent late decelerations after increased oxytocin and frequent contractions indicate fetal compromise associated with uterine tachysystole. A fetal sleep cycle would not explain late decelerations and tachysystole. The pearl is that CTG interpretation must be integrated with contraction frequency and oxytocin exposure.

Reference: NICE NG229; NICE NG235