Blind loop syndrome

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Definition

Blind loop syndrome occurs when part of the small intestine is bypassed and cut off from the normal flow of food and digestive juices.

The bypassed portion of intestine, known as a blind loop, initiates a cascade of problems. Because food can't pass through the loop, it ferments, encouraging bacterial growth. The bacteria then interfere with absorption of essential nutrients, often leading to diarrhea, weight loss and malnutrition.

Blind loop syndrome — sometimes called stasis syndrome or stagnant loop syndrome — often occurs as a complication of abdominal surgery. But blind loop syndrome can also result from structural defects and some diseases. Although blind loop syndrome occasionally requires surgery, most people respond well to antibiotics.

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Symptoms