Duodenal Atresia

by Carlo Raj, MD

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    Let's take a look at Duodenal atresia. What does the term "atresia" mean? Lack of development. "Atresia" means lack of development. Here the duodenum is not developed properly. Why? Oh, it could be genetic, maybe associated with Down Syndrome. So Duodenal atresia Down Syndrome On abdominal extra, you find Double bubble sign. D−D−D Once again, Duodenal atresia, Down Syndrome, Double bubble. Know those. Trisomy 21, Down Syndrome Signs and symptoms The vomit that you'd find here with Duodenal atresia is the fact that now I want you to think normal physio−anatomy and we have the bile duct. The bile duct is then going to connect to the, with the pancreatic duct connected, to the second part of the duodenum. It connects so that you emulsify the lipids so on and so forth but you're in the second part of the duodenum and then you end in a pouch. You're in the second part of the duodenum the bile duct just connected, okay? So you don't have a problem with that but the rest of it doesn't canalize properly. So the failure of recanalization of the two parts of duodenum in which the bile duct is still connecting, when you vomit, what's coming out is going to be yellow and green. Are we clear? So we call this a bilious type of vomit. Whereas in physiology and embryology, you'll learn about pyloric stenosis. In that type of vomit, think about the pylorus, it's not even close to the bile duct Right? So therefore, that type of vomit that you find with that first born male with pyloric stenosis would be projectile and they would be non−bilious. This would be bilious. Often on first day of life usually abdominal distention because of lack of recanalization of your duodenum. And simple, simple concept....

    About the Lecture

    The lecture Duodenal Atresia by Carlo Raj, MD is from the course Stomach and Duodenum Diseases.

    Author of lecture Duodenal Atresia

     Carlo Raj, MD

    Carlo Raj, MD

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