Advanced maternal age and ART singleton — structured oral station (12 minutes)

Opening prompt — "Take me through how you would manage her booking."

Model response — say it in this order: ^[1][5]

• "This woman carries three independent risk contributions — age (41, very advanced maternal age), subfertility (seven years primary infertility), and ART (ICSI conception). They are not interchangeable, and the counselling and surveillance differ for each."
• "I would distinguish them, document a risk-tailored surveillance plan, and address the specific counselling points the ICSI conception raises — aneuploidy screening, congenital anomaly and imprinting disorder risk, and the timing-of-birth conversation later in pregnancy."
• "My booking plan is: accurate dating from the embryo transfer date, aneuploidy screening, low-dose aspirin for preeclampsia prevention, mid-gestation uterine artery Doppler, serial growth scans, and gestational diabetes screening."^[7]

Probe 1 — "Explain the three risk contributions and how they differ."

• "Age 41 — higher aneuploidy, gestational diabetes, preeclampsia, stillbirth and caesarean. The risks rise exponentially from the mid-thirties. Very advanced maternal age (45 and over) carries additional cardiovascular risk."
• "Subfertility — independent of ART, subfertility itself is a risk factor for adverse outcomes, including preeclampsia, preterm birth and perinatal mortality. The Luke US cohort data show this clearly."^[5]
• "ART (ICSI) — IVF/ICSI singleton pregnancies carry excess risk of preterm birth, low birthweight, small-for-gestational-age, hypertensive disorders and perinatal mortality (Pandey 2012 meta-analysis). The excess persists even after elective single embryo transfer."^[3]

Probe 2 — "Detail your surveillance plan with the evidence."

• "Low-dose aspirin from 12 weeks to 36 weeks — she has multiple preeclampsia risk factors: nulliparity, age 35 or older, ART-conceived pregnancy, plus BMI over 30. Dosed per local guideline."^[7]
• "Mid-gestation uterine artery Doppler to stratify risk; normal Dopplers and normal growth justify standard surveillance."
• "Serial growth scans through the third trimester; umbilical artery Doppler if growth-restricted. The ART singleton excess risk of SGA and preterm birth warrants this."^[3]
• "Gestational diabetes screening: early glycaemic assessment given her age and BMI, with formal testing in mid-pregnancy."

Probe 3 — "She asks whether her ICSI baby is at higher risk of congenital anomalies and imprinting disorders. Counsel her."

• "Congenital anomalies are modestly increased in ART singletons. The Davies 2012 NEJM study of nearly 309 000 births found an adjusted odds ratio of 1.28 for any birth defect with assisted conception. For ICSI specifically, the risk persisted after adjustment (adjusted OR 1.57), although residual confounding cannot be excluded."^[2]
• "Imprinting disorders are increased but the absolute risk is small. The Lazaraviciute 2014 meta-analysis found a combined odds ratio of 3.67 (95% CI 1.39 to 9.74) for any imprinting disorder in IVF/ICSI children. The clinically recognised syndromes are Beckwith-Wiedemann and Angelman, with weaker signals for Russell-Silver."^[4]
• "The counselling principle: a small absolute increase on a rare baseline. The large majority of ICSI children are healthy. I would not overstate the risk, and I would not ignore it — I would tell her the truth and let her decide how to hold it."

Probe 4 — "At 39 weeks with a normal antenatal course, she asks about timing and mode of birth."

• "I would quote the Reddy 2006 data: at 37 to 41 weeks, the risk of stillbirth is about 1 in 267 ongoing pregnancies for age 40 or older — roughly 99.6% of ongoing term pregnancies end in a live birth. The risk is real but the absolute number remains modest."^[1]
• "There is no evidence for routine early induction in advanced maternal age alone. The decision to offer induction at 39 to 40 weeks is shared, weighing the stillbirth risk against the iatrogenic prematurity and caesarean risks of induction."
• "Mode of birth is for obstetric indications — caesarean is not mandated by age or ART alone. I would offer a vaginal birth with a clear plan for monitoring and escalation."

Probe 5 — "She conceived by frozen embryo transfer. Does that change your counselling?"

• "Yes — fresh and frozen embryo transfer carry divergent signals. Fresh embryo transfer is associated with small-for-gestational-age; frozen embryo transfer is associated with large-for-gestational-age and a higher rate of hypertensive disorders of pregnancy, particularly after a programmed (artificial) cycle FET."^[6]
• "The CoNARTaS data show similar stillbirth risk after fresh and frozen transfer compared with spontaneous conception, but neonatal death is higher after both — mediated largely by the higher rate of preterm birth."
• "So for a frozen-embryo-transfer singleton, I would heighten surveillance for macrosomia and preeclampsia, screen carefully for gestational diabetes, and counsel on shoulder dystocia risk at the time of birth."

Communication probe — "She has waited seven years for this baby. She is terrified of losing it."

This is a scored domain. Demonstrate it out loud: ^[5]

• Acknowledge the journey: "Seven years is a long time, and the fear you are describing is exactly what most women in your situation feel. It is real and it makes sense."
• Anchor the counselling in honest numbers, not false reassurance: "Most women in your situation have a healthy live birth. The risks are real but they are not the whole story, and there are specific things we can do — aspirin, surveillance, a clear plan — that reduce them further."
• Allocate a named coordinator and a written plan; offer perinatal mental health support proactively, not reactively.^[5]