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Causes

By Mayo Clinic staff

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Illustration of stomach, pyloric valve and upper part of small intestine (duodenum)
Stomach and pyloric valve

It's not always clear what leads to gastroparesis. But in many cases, gastroparesis is believed to be caused by damage to a nerve that controls the stomach muscles (vagus nerve).

The vagus nerve helps manage the complex processes in your digestive tract, including signaling the muscles in your stomach to contract and push food into the small intestine. A damaged vagus nerve can't send signals to your stomach muscles. This may cause food to remain in your stomach longer, rather than move normally into your small intestine to be digested.

The vagus nerve can be damaged by diseases, such as diabetes, or by surgery to the stomach or small intestine.

References
  1. Gastroparesis. National Institute for Diabetes and Digestive and Kidney Diseases. http://digestive.niddk.nih.gov/ddiseases/pubs/gastroparesis/index.htm. Accessed Oct. 12, 2009.
  2. Fox J, et al. Gastroparesis. American College of Gastroenterology. http://www.acg.gi.org/patients/gihealth/gastroparesis.asp. Accessed Oct. 12, 2009.
  3. Waseem S, et al. Gastroparesis: Current diagnostic challenges and management consideration. World Journal of Gastroenterology. 2009;15:25.
  4. Quigley EMM. Gastric motor and sensory function and motor disorders of the stomach. In: Feldman M, et al. Sleisenger & Fordtran's Gastrointestinal and Liver Disease: Pathophysiology, Diagnosis, Management. 8th ed. Philadelphia, Pa.: Saunders Elsevier; 2006. http://www.mdconsult.com/das/book/body/163770013-4/0/1389/0.html. Accessed Oct. 6, 2009.
  5. Hejazi RA, et al. Treatment of refractory gastroparesis: Gastric and jejunal tubes, Botox, gastric electrical stimulation and surgery. Gastrointestinal Endoscopy Clinics of North America. 2009;19:73.
  6. Gastroparesis. ADA Nutrition Care Manual. http://nutritioncaremanual.org/index.cfm?Page=Diseases&topic=32689&headingid=32690. Accessed Oct. 14, 2009.

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Nov. 21, 2009

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