Child health · UKMLA & AKT
Duodenal atresia
A free high-yield preview for the UKMLA Applied Knowledge Test. Below are the key points to recognise duodenal atresia — the full SA Note notes add investigations, management, complications and 10 practice questions.
Key high-yield points
- Congenital obstruction of the duodenum - most common site of congenital intestinal atresia (~1 in 5,000-10,000 live births)
- ~25-30% have trisomy 21 (Down syndrome); associated with prematurity and polyhydramnios
- ~80% of atresias occur at/near the ampulla of Vater (D2) - obstruction is distal to ampulla, so vomiting is bilious
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