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You are here : 3-RX.com > Medical Encyclopedia > Tests and Exams > Barium Enema
      Category : Health Centers > Digestive System

Barium Enema

Alternate Names : Lower GI X-Ray

Overview & Description | Preparation & Expectations | Results and Values

A barium enema is an X-ray exam used to help diagnose certain problems in the lower bowel.

Who is a candidate for the test?

A healthcare provider may recommend a barium enema in the following cases:

  • if a person has blood in the stool or notices blood on toilet paper
  • if a person has a change in bowel habits
  • to evaluate the part of the colon not seen on sigmoidoscopy
  • if a person has a family history of colorectal polyps or colorectal cancer
  • to check the colon after surgery
  • to help fix a twisted bowel
  • to evaluate fever or lower abdominal pain
  • How is the test performed?

    A barium enema feels moderately uncomfortable. During this test, a person lies on the X-ray table. The person is usually asked to roll onto his or her left side. The technologist or radiologist will insert a lubricated enema tip into the rectum. The tip has a balloon that can be inflated just enough to keep liquid from leaking out.

    A bag hanging on a pole holds the barium solution. This liquid is slowly passed through the bowels while X-rays are taken. The X-ray pictures are projected on a monitor. The person having the test will be asked to roll from side to side. The table may be tilted up or down, to get the best pictures. As each X-ray is taken, the person must hold his or her breath briefly.

    Once the whole bowel is filled with the solution, the technologist will take more pictures with an overhead X-ray tube. Then the balloon is deflated and the enema tip is removed. The person goes to the bathroom to expel as much as possible of the barium solution. After that, he or she returns to the table so the emptied bowel can be X-rayed.

    Sometimes, an air-contrast study is done, which is similar to a regular barium enema. In a one-stage air-contrast exam, the air and barium are put into the bowel together. In a two-stage exam, the barium is instilled first. The bowel is emptied and then air is pumped into it.

    After the X-rays are done, the person will be asked to wait until the technologist or radiologist is sure no more X-rays are needed.


    Next section


    Barium Enema: Preparation & Expectations

    Author: James Compton, MD
    Reviewer: Carlos Herrera, MD
    Date Reviewed: 08/13/01

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