Placenta praevia — DRCOG MCQ

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ModerateAntenatal CarePlacenta praeviaDRCOG

A 34-year-old woman at 31 weeks has painless bright vaginal bleeding and a known low-lying placenta on the anomaly scan. What is the most likely diagnosis?

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Correct answer: C — Placenta praevia

Placenta praevia is the best answer because the vignette is testing Placenta praevia and the recommended approach is consistent with RCOG Green-top Guideline 27a. The other diagnoses do not explain the combination of timing, examination findings and investigation results as well as the correct diagnosis. Specifically, Genital herpes; Primary dysmenorrhoea; Ectopic pregnancy; Bacterial vaginosis would be suboptimal in this scenario. The key discriminator is the pattern across symptoms, examination and timing, not a single isolated symptom.

Reference: RCOG Green-top Guideline 27a