Extremely preterm infant viability and periviable counselling — formative SAQs

SAQ 1 (10)

A 29-year-old woman presents at 23+4 weeks gestation with regular uterine contractions and is found to be 6 cm dilated. First-trimester crown-rump-length dating is confirmed. The estimated fetal weight is 620 g and the fetus is female and singleton. The mother has received one dose of betamethasone and has not yet received magnesium sulfate. [8]

1. Outline the antenatal management steps you would take to optimise fetal outcomes before delivery. (3) [8]
2. Describe the counselling framework you would use with the parents, including the specific survival and impairment data you would present. (3) [1] [9]
3. Explain the role of each prognostic factor (gestational age, estimated fetal weight, sex, singleton status, antenatal steroids) in modifying the outcome estimate for this infant. (2) [2]
4. State the management decision framework for this gestational age and what role parental preference plays. (2) [8] [9]

Model answer

Antenatal optimisation. I would administer the second dose of betamethasone 12 mg intramuscularly to complete the corticosteroid course, administer magnesium sulfate 4 g intravenous loading over 20 to 30 minutes for fetal neuroprotection (indicated before 32 weeks), offer tocolysis to delay delivery and allow steroid completion, arrange in-utero transfer to a tertiary perinatal centre with neonatal intensive care capability, and conduct a formal antenatal neonatal consultation with both parents. I would also administer Group B Streptococcus prophylaxis and ensure a senior neonatal team is present at delivery. [8]

Counselling framework. I would use shared decision-making principles: present honest, balanced, probabilistic outcome data using local institutional data where available. I would explain that at 23+4 weeks with active treatment, survival is approximately 30 to 50 per cent, and that among survivors, approximately 40 to 60 per cent will have moderate-to-severe neurodevelopmental impairment including cerebral palsy, cognitive impairment, and sensory deficits. I would describe the neonatal intensive care journey, potential complications, and the option of comfort care. I would avoid both false reassurance and undue pessimism, use plain language, create space for genuine parental autonomy, and document the conversation. [1] [9]

Prognostic factors. Each week of gestational age increases survival substantially; estimated fetal weight independently predicts outcome (each additional 100 g improves survival); female sex confers approximately a 5 to 10 per cent survival advantage; singleton status confers a 10 per cent or more advantage compared to multiple gestation; and a complete antenatal corticosteroid course roughly doubles the odds of survival without major morbidity. This infant's female sex, singleton status, and partial corticosteroid course all favour her prognosis, but she remains in the high-risk grey zone. [2]

Decision framework. At 23+4 weeks, the infant is squarely within the grey zone (22+0 to 24+6 weeks). The standard framework is shared decision-making: clinicians provide outcome data and the parents participate in deciding between active resuscitation and comfort care. Parental preference is central and decisive within this zone. If parents choose active treatment, a clear birth plan is documented and the neonatal team is mobilised. If parents choose comfort care, palliative and bereavement support is provided. [8] [9]

SAQ 2 (10)

A neonatologist is asked to counsel a couple whose fetus has been dated at 22+2 weeks by first-trimester ultrasound, with an estimated fetal weight of 480 g. The pregnancy is a dichorionic twin gestation. The parents are religious and strongly desire that everything possible be done. [9]

1. Outline the key elements of the antenatal counselling conversation, including the outcome data you would present. (4) [1] [9]
2. Explain how multiple gestation modifies the prognosis and how this changes the counselling compared to a singleton pregnancy at the same gestational age. (2) [2]
3. Describe how you would address the parents' request for maximum treatment, including the ethical principles that guide your response. (2) [9] [10]
4. If the parents and team agree on comfort care, describe the components of family-centred palliative and bereavement care you would provide. (2) [10]

Model answer

Counselling elements. I would explain that at 22+2 weeks, survival with active intensive care is rare, estimated at 5 to 15 per cent in the most proactive centres, and that among survivors, 60 to 80 per cent have severe neurodevelopmental impairment. I would present the grey zone concept, explain that the decision between active treatment and comfort care is shared, describe the NICU journey in honest terms (prolonged hospitalisation, ventilation, complications including intraventricular haemorrhage, chronic lung disease, necrotising enterocolitis, and sepsis), and describe what comfort care would look like. I would acknowledge the parents' values, use plain language, provide written information, offer time for reflection and a follow-up conversation, and document the discussion and the agreed plan. I would present local institutional outcome data where available rather than relying solely on international averages. [1] [9]

Multiple gestation effect. Multiple gestation independently worsens prognosis at a given gestational age. The Tyson model showed that singleton status confers a significant survival advantage of 10 per cent or more. As a twin pregnancy at 22+2 weeks, the prognosis is worse than a singleton at the same gestational age. The second-born twin is at additional risk. I would counsel with outcomes specific to multiple gestation rather than extrapolating from singleton data, and would address the possibility of discordant outcomes between the twins. [2]

Addressing parental request for maximum treatment. I would respect the parents' values and autonomy while ensuring the decision is fully informed. The ethical principles guiding my response are the best interests standard (balancing the benefits and burdens of intensive care), respect for parental autonomy (parents are the appropriate decision-makers within the grey zone), informed consent (ensuring the parents understand the full range of outcomes including quality of survival), and non-maleficence (avoiding disproportionate suffering). If, after comprehensive counselling, the parents maintain a strong preference for active treatment and the clinical team judges that the infant's best interests are not clearly violated, active treatment may be pursued in some centres. I would seek consensus, involve an ethics committee if there is genuine disagreement, and document the process. [9] [10]

Comfort care components. If comfort care is chosen, I would ensure the infant is kept warm (wrapped in a blanket, skin-to-skin with parents), provided with analgesia as needed for any signs of distress (such as morphine), and held by the parents in a quiet, private space. I would facilitate memory-making (photographs, handprints, footprints, a lock of hair, naming the baby), provide bereavement support including social work and chaplaincy, arrange a follow-up bereavement meeting, offer referral to perinatal loss support services, and ensure clear communication with the community general practitioner and any other children in the family. Comfort care is active, compassionate, and standardised care, not an absence of care. [10]