skip to main content

Transient tachypnoea of the newborn — RACP Paediatrics MCQ

Instant feedback + full explanation. One question, done properly.

ModerateNeonatologyTransient tachypnoea of the newbornRACP Paediatrics

A 38-week infant born by elective caesarean section develops tachypnoea two hours after birth. Oxygen saturations are 94% in low-flow oxygen, he is afebrile and perfusion is normal. Chest radiograph shows hyperinflation and fluid in the horizontal fissure. What is the most likely diagnosis?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: B — Transient tachypnoea of the newborn

Transient tachypnoea is favoured by term gestation, caesarean birth, mild early respiratory distress and hyperinflation with fissural fluid. Respiratory distress syndrome is more likely in significant prematurity with low lung volumes. The clinical course should improve over the first 24 to 72 hours with supportive care.

Reference: RACP Knowledge Guides; RCH Neonatal respiratory distress guideline