# Hypertrophic pyloric stenosis

What is hypertrophic pyloric stenosis (HPS)? HPS is a congenital condition where a baby is born with a normal size pylorus, but over the first few weeks it grows in size such that it obstructs the pyloric sphincter.

Sources: Pathoma First Aid 2016 https://en.wikipedia.org/wiki/Pyloric_stenosis http://www.uptodate.com/contents/infantile-hypertrophic-pyloric-stenosis http://emedicine.medscape.com/article/929829-overview?pa=utWU9Nyxwd8I%2BRjK3XM8NLIj2sLCVId1omXRwImJTCDnU39XynH1Pz9VlY4WRYsH0H6lhd1IWvczX9DcZimZyOqASnmUPI79PpLK34HpPK0%3D#a6

http://www.merckmanuals.com/professional/pediatrics/gastrointestinal-disorders-in-infants/hypertrophic-pyloric-stenosis

- Kind: Short
- Year: 2017
- Runtime: 5 min
- By: open.osmosis.org
- Archive: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Hypertrophic_pyloric_stenosis.webm)
- Licence or status: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0) (as the archive states it)
- Credit: open.osmosis.org
- Who can watch: Teens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/commons/55181571?play=1)