Late-preterm infant: risks and corrected-age follow-up — OSCE

Objectives

1. Explain in plain language why a 35-week infant is late-preterm, not term, and why that matters even when the baby looks well. [1] [2]
2. Explain the discharge-readiness criteria and why they must all be met before going home. [6]
3. Reassure the family about bilirubin and feeding management using gestational-age-specific reasoning. [5]
4. Outline the corrected-age follow-up plan and invite the family into shared understanding. [4]

Candidate brief

12-minute station. The parents are at the bedside of their 35-week infant on day one. The baby looks well — pink, alert, breastfeeding — but is tiring at feeds, has lost 6 per cent of birthweight, is slightly cool in an open cot, and the bilirubin is rising towards the phototherapy threshold. The parents are anxious to go home and ask: "He looks almost full term — why can't we just take him home? What's different about 35 weeks? When will he be ready, and what happens after?" They are engaged but worried. [1]

Expected actions

• Acknowledge the parents' desire to go home and validate their observation that the baby looks well. [1]
• Explain in plain language that 35 weeks is "late-preterm" — three weeks before full term — and that babies born at this age look mature but have systems that are not quite ready, including feeding coordination, temperature control, sugar regulation and jaundice clearance. [1] [2]
• Explain the discharge gate as a safety checklist, not an obstacle: temperature stable in an open cot, feeding well with weight gain, blood sugar stable, no concerning pauses in breathing, and jaundice safely below treatment level and falling — plus making sure they feel confident and a check-up is booked within two to three days. [6]
• Explain the bilirubin in plain terms: the liver is still maturing, so jaundice is more common and we watch it more closely; we use a lower treatment threshold for 35 weeks than for a full-term baby because the same level is a little more risky, and we will treat early if needed. [5]
• Describe the follow-up plan: a check within 48 to 72 hours, then reviews through infancy; because he was born five weeks early, we assess his development allowing for those weeks (corrected age), and we keep an eye on his learning and behaviour right through to school age. [4]
• Offer honest, hopeful, probabilistic language and invite questions. [4]

Examiner prompts

• "Why can't we go home if he looks so well?" — Re-frame appearance versus maturity; describe immature feeding, temperature, glucose and jaundice systems. [1]
• "What has to be true for him to come home?" — Walk through the five discharge criteria plus family readiness and booked follow-up. [6]
• "Is the jaundice dangerous?" — Explain gestational-age-specific thresholds and why we treat earlier at 35 weeks; offer reassurance with a clear plan. [5]
• "Will he catch up?" — Explain corrected age, the Fenton-to-WHO transition, and structured follow-up to school age in hopeful, probabilistic terms. [4]

Marking foci

• Clear, plain-language explanation of late preterm as a distinct, higher-risk group despite a well appearance [1] [2]
• Accurate description of the discharge-readiness gate as a safety checklist [6]
• Gestational-age-specific reasoning about bilirubin risk and treatment [5]
• Honest, hopeful counselling of corrected-age follow-up to school age [4]