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O&G VivasAntenatal care — fetal surveillance

O&G Vivas · Antenatal care — fetal surveillance

Decreased fetal movements — structured oral station (12 minutes)

FRANZCOG oral-format station on DFM: candidate manages from the doorway, defends why a reassuring CTG does not close the file, sequences the investigation bundle, and communicates with an anxious first-time mother. Scored against the eight published RANZCOG oral domains.

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FRANZCOGMRCOGABOG
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FRANZCOGMRCOGABOG
Prompt
You are the obstetric registrar on the antenatal assessment unit. A 29-year-old G1P0 woman at 38 weeks gestation has presented reporting that her baby has not moved as much over the last day. She is a smoker. Her last growth scan at 32 weeks was normal. She is anxious and worried she is overreacting. The examiner will ask you to assess and manage her from the doorway onwards, then explore your reasoning, your investigations, and your communication with her.

Station format

4 minutes reading, 12 minutes examination, 20 marks, global scoring. The eight published RANZCOG oral domains apply: history and examination; investigations and interpreting results; treatment and management; clinical knowledge; complex, urgent or unusual clinical presentations; rapport with patient, support person or colleague; respect; communication skills. You are being marked on how you behave, not only what you know. [1]

Reveal the examiner script and model responsesShowHide

Opening prompt — "Tell me what you do from the doorway."

Model response — say it in this order: [1][3]

  • "I would confirm fetal viability at the bedside with a handheld Doppler or ultrasound, take a focused history of the change in movements and any associated symptoms, and run a 20-minute CTG."
  • "While that is happening I would observe whether the baby is moving during the assessment, examine the abdomen for fundal height and tenderness, and check her observations to exclude pre-eclampsia or sepsis."
  • "I would reassure her that she did the right thing by coming in — reduced movement is something we always take seriously."

Examiner is listening for: viability confirmed first, the CTG plus the broader assessment, and explicit validation of the woman's presentation. [3]

Probe 1 — "Her CTG is reactive and the baby is moving. The midwife says she is fine and can go home. What do you do?"

  • "A reactive CTG is reassuring for the next twenty minutes, but it does not exclude fetal growth restriction or a failing placenta — the CTG tells me about the next minutes, growth and Doppler tell me about the next weeks."[3][5]
  • "Her last growth scan was at 32 weeks, so I would arrange an ultrasound for fetal biometry on customised charts, amniotic fluid volume, and umbilical artery Doppler before deciding on discharge."
  • "I would also ask about her smoking and counsel her on smoking cessation, because smoking carries an adjusted odds ratio of 2.96 for adverse outcome after reduced fetal movements."[2]

Probe 2 — "She asks whether it is normal for the baby to slow down at the end. What do you say?"

  • "I would be honest: the vigour of movement may change as the baby runs out of room, but the frequency of movements should not decrease. A reduction in frequency is not normal, and that is why we assess every woman who presents."[1]
  • "I would not say 'it's normal at term' — that dismissal is a recurring theme in stillbirth reviews."
  • "I would give her written information about normal fetal movements and the Safer Baby Bundle advice, including side-sleeping in the third trimester."[6]

Probe 3 — "Two days later she re-presents with the same complaint. How does your management change?"

  • "Recurrent DFM up-tiers the risk. The Lu IPD meta-analysis shows recurrent reduced movements cluster with fetal growth restriction and placental insufficiency."[2]
  • "I would involve the senior obstetrician, repeat the full assessment including growth and Doppler, and have a discussion with her about induction of labour or planned birth. A third presentation would be a near-mandate for a senior decision about birth."[2]

Probe 4 — "What does the evidence say about raising awareness of fetal movements to reduce stillbirth?"

  • "The AFFIRM trial, a stepped-wedge cluster randomised trial in the UK and Ireland with over 400 000 pregnancies, did NOT reduce stillbirth — 4.40 versus 4.06 per 1000, adjusted odds ratio 0.90, 95% CI 0.75 to 1.07."[4]
  • "The My Baby's Movements trial in Australia and New Zealand gave a similar result, and actually showed more induction of labour and early-term birth in the intervention group."
  • "But the individual-level association is real — the Thompson IPD meta-analysis shows reduced frequency carries an adjusted odds ratio of 2.33 for late stillbirth. So the right response to an individual woman is assessment, not dismissal."

Probe 5 — "She is frightened and her partner is anxious. Talk me through your communication."

This is a scored domain, not a courtesy. Demonstrate it out loud: [6]

  • Move to her eye level, use her name, validate her: "You were absolutely right to come in. We always take a change in your baby's movements seriously."
  • Explain findings in plain language: "The heart-rate trace is reassuring for now. I want to do a scan to check your baby's growth and the blood flow, because that tells us about the next few weeks, not just today."
  • Give a clear plan and a written safety-net: "If you notice another change, come straight back — you will never be wasting our time."
Obstetrics & Gynaecology Pro

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You have read the opening of this viva. The complete unit — every section and its primary-source references — is part of the Obstetrics & Gynaecology fellowship library.

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References6ShowHide
  1. [1]Thompson JMD, Wilson J, Bradford BF, et al. A better understanding of the association between maternal perception of foetal movements and late stillbirth: findings from an individual participant data meta-analysis BMC Med, 2021.PMID 34775977
  2. [2]Lu Y, Palin V, Heazell A Risk factors for adverse pregnancy outcomes in reduced fetal movement: an IPD meta-analysis BJOG, 2025.PMID 40091517
  3. [3]Dutton PJ, Warrander LK, Roberts SA, et al. Predictors of poor perinatal outcome following maternal perception of reduced fetal movements: a prospective cohort study PLoS One, 2012.PMID 22808059
  4. [4]Norman JE, Heazell AEP, Rodriguez A, et al. Awareness of fetal movements and care package to reduce fetal mortality (AFFIRM): a stepped wedge, cluster-randomised trial Lancet, 2018.PMID 30269876
  5. [5]Butler E, Hugh O, Gardosi J Evaluating the Growth Assessment Protocol for stillbirth prevention: progress and challenges J Perinat Med, 2022.PMID 35618671
  6. [6]Andrews C, Boyle FM, Pade A, et al. Experiences of antenatal care practices to reduce stillbirth: surveys of women and healthcare professionals pre-post implementation of the Safer Baby Bundle BMC Pregnancy Childbirth, 2024.PMID 39090562
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