Neonatal assessment and transitional care — structured SAQ (15 marks)

(a) The Apgar score — components, timing and limits (5 marks)

Assign at 1 and 5 minutes; if the 5-minute score is under 7, continue every 5 minutes to 20 minutes, recording the concurrent interventions. ^[2]

What the Apgar is NOT (essential for marks): the score alone is not evidence of asphyxia, not a predictor of individual neurological outcome, and not a reason to start or stop resuscitation. It is influenced by gestation, maternal sedation, congenital anomaly, infection and the observer.^[2]

(b) Paired cord gas interpretation (4 marks)

• The artery carries the baby's acid-base status. The arterial pH of 6.95 with a base deficit of 13 mmol/L meets the criteria for significant metabolic acidaemia (arterial pH under 7.00 with base deficit 12 mmol/L or more), consistent with an acute peripartum event.^[3][4]
• Confirm a genuine pair by an arteriovenous pH difference of at least 0.02 to 0.05 and a carbon dioxide difference; here the arterial 6.95 versus venous 7.28 is a clear difference, confirming the pair was sampled correctly.^[5]
• Low arterial cord pH is significantly associated with neonatal mortality, hypoxic-ischaemic encephalopathy and cerebral palsy in meta-analysis — these are associations, not a prognosis for this individual baby.^[3]
• Double-clamp a segment and sample both vessels into pre-heparinised syringes; deferred cord clamping does not prevent valid paired sampling.^[5]

(c) Transitional-care observations and escalation triggers (4 marks)

Four measurements and one watched observation over the first hours. ^[2][6]

• Temperature — target normothermia; a falling temperature precedes almost every deterioration.^[2]
• Heart and respiratory rate — persistent tachypnoea over 60 per minute after the first hour is a sign.^[2]
• Blood glucose — on the risk-based schedule.^[2]
• Preductal and postductal saturations — the pulse oximetry screen once transition is complete.^[6]
• Feeding and behaviour — a baby who will not wake to feed is being told about by its mother.^[2]

Escalation triggers: grunting, recession, central cyanosis, temperature instability, poor feeding, lethargy or irritability, jitteriness, pallor, bile-stained vomiting, and any parental concern.^[2]

(d) The failed screen (2 marks)

• A preductal saturation of 88% with a postductal of 80% is a failed pulse-oximetry screen (either value under 90% or a pre-postductal difference over 3 percentage points).^[6]
• Assess for a duct-dependent congenital heart lesion: examine for murmurs and femoral pulses, request a paediatric cardiology review and echocardiography, and manage the baby in a monitored setting while prostaglandin therapy is considered. False positives are frequently other significant illness, not noise.^[6]