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Gastric Outlet Obstruction

Last updated March 14, 2018

Approved by: Maulik P. Purohit MD, MPH

The diagnostic method of choice is ultrasonography, along with detailed medical history and physical examination.


The topic Gastric Outlet Obstruction you are seeking is a synonym, or alternative name, or is closely related to the medical condition Pyloric Stenosis.

Quick Summary:

  • The pylorus or pyloric canal forms the lower-end of the stomach, connecting to the duodenum (the first part of the small intestine). In this canal, there is a small muscular layer, called the pyloric sphincter, which controls the flow of partially digested food out of the stomach and into the duodenum
  • Pyloric Stenosis is the thickening of the muscle layer of the pyloric region resulting in the narrowing of the pyloric sphincter, which prevents the food from leaving the stomach
  • The condition is congenital in nature and usually seen within the first few months of life. The characteristic signs and symptoms of Pyloric Stenosis are projectile vomiting (vomitus ejected with great force), poor feeding, and dehydration due to loss of fluids
  • The diagnostic method of choice is ultrasonography, along with detailed medical history and physical examination
  • A common complication of Pyloric Stenosis is fluid and electrolyte imbalance that may be very dangerous, because infants are highly vulnerable to even a minor change in their normal fluid and electrolyte balance
  • The treatment of choice is a surgical correction of the pyloric sphincter defect. The prognosis of Pyloric Stenosis with appropriate surgery is excellent

Please find comprehensive information on Pyloric Stenosis regarding definition, distribution, risk factors, causes, signs & symptoms, diagnosis, complications, treatment, prevention, prognosis, and additional useful information HERE.

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Reviewed and Approved by a member of the DoveMed Editorial Board
First uploaded: July 14, 2017
Last updated: March 14, 2018