O&G SAQs · Antenatal care — routine and preventive care
Routine antenatal care and risk assessment — structured SAQ (15 marks)
FRANZCOG-format structured SAQ on routine antenatal care and risk assessment: the NICE NG201 schedule, the preventive package with doses (aspirin, folate, iodine, vaccines, anti-D), the recognition that a routine contact re-screens and re-tiers risk, and the response to reduced fetal movements informed by AFFIRM. Per-sub-part marking rubric included.
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Target exams
How this SAQ is marked
Twelve SAQs, 180 marks, two 2-hour papers — roughly 15 marks and 20 minutes each. Marks come from specifics: the guideline named, the dose with its number, the window with its weeks, the principle stated plainly. Write short labelled points. Answer the sub-part in front of you. [5]
Reveal model answer and mark scheme
(a) Schedule of contacts (2 marks)
One mark for the correct schedule, one for naming the guideline. [5]
- As a parous woman she should be offered seven antenatal contacts (NICE NG201): booking, 16, 28, 31, 34, 36 and 40 weeks. (Nulliparous women get ten.)[5]
- Booking should have occurred by 10 weeks; at 11 weeks she is only just in window, which limits first-trimester combined screening timing.[5]
(b) Preventive and prophylactic package (5 marks)
One mark per correctly dosed intervention. Marks are lost for "give aspirin" with no dose or timing. [1][2]
- Low-dose aspirin 75 to 150 mg daily — she has two high-risk factors (previous pre-eclampsia, BMI over 30); start now (before 16 weeks is ideal; she is 11 weeks). Aspirin at least 100 mg started at or before 16 weeks reduces preterm pre-eclampsia (relative risk 0.62).[2]
- Folic acid — 400 micrograms daily is standard; given her risk factors there is an argument for 5 mg if there were a previous neural tube defect (there is not), so 400 micrograms to at least 12 weeks, ideally started preconception.[1]
- Iodine 150 micrograms daily through pregnancy, where intake is inadequate.[5]
- Pertussis (dTpa) between 20 and 32 weeks in this pregnancy, to protect the infant.[3]
- Influenza vaccine at any gestation during flu season.[5]
- Antenatal anti-D prophylaxis — RhD-negative, no antibodies, so offer routine prophylaxis at 28 and 34 weeks (or a single larger dose), plus additional doses for sensitising events.[5]
- Smoking cessation support — behavioural intervention and, where appropriate, nicotine replacement therapy; smoking is a modifiable risk factor for fetal growth restriction and stillbirth.[5]
(c) The 31-week contact (4 marks)
One mark for recognising the two abnormalities, one for the assessment plan, one for the action, one for naming the principle. [5]
- Two abnormalities: a new blood pressure of 142/92 mmHg with proteinuria (possible pre-eclampsia) and a fundal height below the 10th centile (possible fetal growth restriction).[5]
- Immediate assessment: repeat the blood pressure, send a midstream urine for protein-to-creatinine ratio or 24-hour protein, bloods (FBC, U&E, LFTs), and arrange a growth ultrasound with umbilical artery Doppler.[5]
- Action: assess for pre-eclampsia formally and arrange fetal surveillance; she has moved off the low-risk pathway and now needs a management plan and senior review.[5]
- Principle: every routine contact is a fresh risk assessment — risk status expires between visits, and the woman leaving the low-risk pathway is the one the contact is designed to catch. This contact is the safety-net working as intended.[5]
(d) Reduced fetal movements (4 marks)
One mark for taking it seriously, one for the assessment, one for the action, one for the evidence. [4]
- Take it seriously. Reduced fetal movements are never dismissed; a woman reporting change is assessed the same day.[4]
- Assessment: focused history (onset, perception, any trauma or bleeding), auscultation and a cardiotocograph, and a growth scan with Doppler given her other findings.[4]
- Action: if the CTG and Doppler are normal, reassure and give a clear safety-net for when to return; if abnormal, escalate to delivery planning. Document the discussion.[4]
- Evidence: the AFFIRM stepped-wedge cluster trial tested a package of fetal-movement awareness plus a standardised care bundle and did not significantly reduce stillbirth overall — but it reaffirmed the principle that reduced fetal movements must always be acted upon, because the cost of dismissal is the stillbirth you can never undo.[4]
You have read the opening of this SAQ. The complete unit — every section and its primary-source references — is part of the Obstetrics & Gynaecology fellowship atlas.
References6Show ledgerHide ledger
- [1]De-Regil LM, Peña-Rosas JP, Fernández-Gaxiola AC, et al. Effects and safety of periconceptional oral folate supplementation for preventing birth defects Cochrane Database Syst Rev, 2015.PMID 26662928
- [2]Roberge S, Bujold E, Nicolaides KH Aspirin for the prevention of preterm and term preeclampsia: systematic review and metaanalysis Am J Obstet Gynecol, 2018.PMID 29138036
- [3]Amirthalingam G, Andrews N, Campbell H, et al. Effectiveness of maternal pertussis vaccination in England: an observational study Lancet, 2014.PMID 25037990
- [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]Sandall J, Soltani H, Gates S, et al. Midwife-led continuity models versus other models of care for childbearing women Cochrane Database Syst Rev, 2016.PMID 27121907
- [6]Smaill FM, Vazquez JC Antibiotics for asymptomatic bacteriuria in pregnancy Cochrane Database Syst Rev, 2019.PMID 31765489