Question

What is the significance of the double bubble sign on an X-ray in a newborn with Down's syndrome?

1) It indicates the presence of an intestinal obstruction
2) It suggests the presence of a diaphragmatic hernia
3) It is a normal finding in newborns with Down's syndrome
4) It is a sign of pneumothorax

Answer 1

The double bubble sign on an X-ray in a newborn with Down's syndrome typically indicates an intestinal obstruction, which is often due to duodenal atresia.

Step-by-step explanation:

The significance of the double bubble sign on an X-ray in a newborn with Down's syndrome is that it indicates the presence of an intestinal obstruction. Specifically, this is commonly associated with duodenal atresia, a congenital condition where the first part of the small bowel (duodenum) has not developed properly. It is not a normal finding, nor does it suggest a diaphragmatic hernia or pneumothorax. Babies with Down's syndrome are more prone to certain congenital malformations, including gastrointestinal ones like duodenal atresia.