Blind loop syndrome causes

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Causes

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.