BIOMED
Pathophysiology
Everything be alphabetical here (except for Homeostasis at the bottom) 😘
(& Mental Health, Lmao)
There are a lot of neonatal conditions covered, seen in high level NICU/NCCU Units.
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Table of Contents:
1 | Ageing
2 | Canc...
Intestinal atresia is the broad term to describe complete obstruction anywhere in the intestine, whereas stenosis refers to a partial obstruction resulting in narrowing of the intestinal lumen. The small bowel is most commonly the affected portion, however these conditions can affect any portion of the gastrointestinal (GI) tract.
Symptoms will differ with diagnosis, and all atresia required surgical treatment.
Forms of Intestinal Atresia
Pyloric Atresia Pyloric atresia refers to an obstruction at the pylorus linking the stomach to the duodenum (first portion of the small intestine). This type of intestinal atresia tends to run in families, causing vomiting due to upper abdominal distension. Abdominal X-ray shows air-filled stomach, with no air in the remaining intestinal tract.
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Duodenal Atresia Stomach contents empties into the duodenum, however when there is duodenal atresia, babies will be vomiting within hours after birth and may develop abdominal distension. Abdominal X-ray shows dilated stomach and duodenum without gas in the remaining intestinal tract.
This occurs in around 1 in every 2'500 live births. Half of these are born prematurely, and two thirds have associated congenital anomies of the heart, genitourinary, or intestinal tract, as well as nearly 40% born with Down syndrome.
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