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Digestive system
Digestive system


Stomach and small intestine
Stomach and small intestine


Definition:

Blind loop syndrome occurs when part of the intestine becomes blocked, so that digested food slows or stops moving through the intestines. This causes bacteria to overgrow in the intestines and causes problems in absorbing nutrients.



Alternative Names:

Stasis syndrome; Stagnant loop syndrome



Causes, incidence, and risk factors:

The name of this condition refers to the "blind loop" formed by the blocked intestine. This blind loop does not allow the normal flow of digested food through the intestinal tract.

When a section of the intestine is blocked by blind loop syndrome, bile salts needed to digest fats become ineffective, resulting in fatty stools and poor absorption of fat and fat-soluble vitamins. Vitamin B12 deficiency may occur because the extra bacteria that develop in this situation use up all of the vitamin.

Blind loop syndrome is a complication that occurs after many operations, including subtotal gastrectomy (surgical removal of part of the stomach), operations for extreme obesity, or as a complication of inflammatory bowel disease or scleroderma .



Signs and tests:

During a physical examination, the doctor may notice a mass in, or swelling of, the abdomen. Possible tests include:



Treatment:

The initial treatment generally involves antibiotics for the bacterial overgrowth, along with vitamin B12 supplementation. If antibiotics don't work, surgery to help the flow of food through the intestine may be considered.



Support Groups:



Expectations (prognosis):

Many patients get better with antibiotics. If surgical repair is required, the outcome is typically very good.



Complications:

Calling your health care provider:

Call your health care provider if you have symptoms of blind loop syndrome.



Prevention:



References: Townsend CM, Beauchamp RD, Evers BM, Mattox KL. Sabiston Textbook of Surgery. 18th ed. Philadelphia, Pa: Saunders Elsevier; 2008.


Review Date: 3/8/2008
Reviewed By: Christian Stone, MD, Division of Gastroenterology, Washington University in St. Louis School of Medicine, St. Louis, MO. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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