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O&G CasesAntenatal care — maternal medicine

O&G Cases · Antenatal care — maternal medicine

Newly diagnosed gestational diabetes — counselling and shared decision-making station

Simulated-patient counselling station on newly diagnosed gestational diabetes: delivering the diagnosis, correcting misinformation, negotiating a monitoring plan around shift work, explaining escalation to metformin or insulin, agreeing timing of birth, and closing with the postpartum plan. Includes assessor timeline, marking domains, assessor key and fail criteria.

communication6 min readVerification in progress

Target exams

FRANZCOGMRCOGABOG
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Target exams

FRANZCOGMRCOGABOG
Prompt
A 32-year-old G1P0 at 28 weeks has just been told by phone that her pregnancy oral glucose tolerance test is abnormal. She has come to clinic upset. She works night shifts in aged care, has recently arrived from Sri Lanka, speaks good conversational English, and tells you she has read online that gestational diabetes means she will need a caesarean and her baby will go to intensive care. You are the registrar. You have 12 minutes.

Station brief

Format. Simulated-patient communication station, approximately 12 minutes. A trained actor plays the patient. The assessor observes and feeds two pieces of new information. There is no examination and no procedure. [1]

Candidate instruction. Explain the diagnosis, correct the misinformation she has brought with her, negotiate a monitoring plan that fits night shifts, explain what escalation to medication would mean, agree a plan for birth, and set the postpartum follow-up. Verbalise everything. [1]

Her results (provided on the stimulus sheet). 75 g two-hour pregnancy OGTT at 27+5 weeks: fasting 5.0 mmol/L, one hour 11.4 mmol/L, two hours 9.3 mmol/L. Booking bloods normal, BMI 24 kg/m2, singleton, normal anatomy scan, no other medical history. [1]

Obstetrics & Gynaecology Pro

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

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References8ShowHide
  1. [1]Sweeting A, Hare MJ, de Jersey SJ, et al. Australasian Diabetes in Pregnancy Society (ADIPS) 2025 consensus recommendations for the screening, diagnosis and classification of gestational diabetes. Med J Aust, 2025.PMID 40544364
  2. [2]Crowther CA, Hiller JE, Moss JR, et al. Effect of treatment of gestational diabetes mellitus on pregnancy outcomes. N Engl J Med, 2005.PMID 15951574
  3. [3]Landon MB, Spong CY, Thom E, et al. A multicenter, randomized trial of treatment for mild gestational diabetes. N Engl J Med, 2009.PMID 19797280
  4. [4]Crowther CA, Samuel D, Hughes R, et al. Tighter or less tight glycaemic targets for women with gestational diabetes mellitus for reducing maternal and perinatal morbidity: A stepped-wedge, cluster-randomised trial. PLoS Med, 2022.PMID 36074760
  5. [5]Rowan JA, Hague WM, Gao W, et al. Metformin versus insulin for the treatment of gestational diabetes. N Engl J Med, 2008.PMID 18463376
  6. [6]Committee on Practice Bulletins-Obstetrics ACOG Practice Bulletin No. 190: Gestational Diabetes Mellitus. Obstet Gynecol, 2018.PMID 29370047
  7. [7]Vounzoulaki E, Khunti K, Abner SC, et al. Progression to type 2 diabetes in women with a known history of gestational diabetes: systematic review and meta-analysis. BMJ, 2020.PMID 32404325
  8. [8]Harris DL, Weston PJ, Harding JE Incidence of neonatal hypoglycemia in babies identified as at risk. J Pediatr, 2012.PMID 22727868
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