Intestinal obstruction

Definition

Intestinal obstruction is a partial or complete blockage of the bowel that prevents the contents of the intestine from passing through.

Causes

Obstruction of the bowel may due to:

Paralytic ileus, also called pseudo-obstruction, is one of the major causes of intestinal obstruction in infants and children. Causes of paralytic ileus may include:

Mechanical causes of intestinal obstruction may include:

Symptoms

Exams and Tests

During a physical exam, the health care provider may find bloating, tenderness, or hernias in the abdomen.

Tests that show obstruction include:

Treatment

Treatment involves placing a tube through the nose into the stomach or intestine to help relieve abdominal swelling (distention) and vomiting. Volvulus of the large bowel may be treated by passing a tube into the rectum.

Surgery may be needed to relieve the obstruction if the tube does not relieve the symptoms, or if there are signs of tissue death.

Outlook (Prognosis)

The outcome depends on the cause of the blockage. Most of the time the cause is easily treated.

Possible Complications

Complications may include or may lead to:

If the obstruction blocks the blood supply to the intestine, it may cause infection and tissue death (gangrene). Risks for tissue death are related to the cause of the blockage and how long it has been present. Hernias, volvulus, and intussusception carry a higher gangrene risk. 

In a newborn, paralytic ileus that destroys the bowel wall (necrotizing enterocolitis) is life-threatening and may lead to blood and lung infections.

When to Contact a Medical Professional

Call your health care provider if you:

Prevention

Prevention depends on the cause. Treating conditions, such as tumors and hernias, that can lead to obstruction may reduce your risk of getting an obstruction.

Some causes of obstruction cannot be prevented.


Review Date: 7/25/2012
Reviewed By: Jacob L. Heller, MD, MHA, Emergency Medicine, Virginia Mason Medical Center, Seattle, Washington; and Joshua Kunin, MD, Consulting Colorectal Surgeon, Zichron Yaakov, Israel. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.

This information 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. © 1997- 2007 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.