Barium EnemaAir Contrast Study, Lower Gastrointestinal Series How It Is Done To make the intestine visible on an X-ray picture, the colon is
filled with a contrast material containing barium. This is done by pouring the
contrast material through a tube inserted into the
anus. The barium blocks X-rays, causing the
barium-filled colon to show up clearly on the X-ray picture. - You will lie on the X-ray table while a
preliminary X-ray film is taken.
- While you are
lying on
your side
, a well-lubricated enema tube will be inserted gently into
your rectum. The barium contrast material is then allowed to flow slowly into
your colon. - A small balloon on the enema tip may be inflated to
help you hold in the barium. Tightening your anal sphincter muscle (as if you
were trying to hold back a bowel movement) against the tube and taking slow,
deep breaths may also help.
- Occasionally, you may be given an
injection of medicine to relieve the cramping.
Your health professional will observe the flow of the barium
through your colon on an X-ray
fluoroscope monitor that is similar to a television
screen. - You will be asked to turn to different
positions, and the table may be tilted slightly to help the barium flow through
your colon and to take X-rays from different directions (sides, front, and
back).
- Your health professional may also press gently on your
abdomen with his or her hand or a plastic paddle to help move the barium
through your intestines.
- If a double-contrast study is being done,
the barium will be drained out and your colon will be filled with air.
When the test is finished: - The enema tube is then removed.
- You will be given a bedpan or be taken to the toilet to get rid of
as much of the barium as you can.
- One or two additional X-ray
pictures (post-evacuation films) will then be taken.
A single-contrast study usually takes 30 to 45 minutes, although
the actual time the barium is held inside is only 10 to 15 minutes. A double-
or air-contrast study may take up to an hour. After the test, you may resume your regular diet unless otherwise
instructed. Be sure to drink plenty of liquids to replace those you have lost
and to help flush the remaining barium out of your system. Your bowel movements
may look white or pinkish for 1 to 2 days after the test.
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| | Author: | Maria G. Essig, MS, ELS | Last Updated: May 2, 2007 | | Medical Review: | Kathleen Romito, MD - Family Medicine Jerome B. Simon, MD, FRCPC, FACP - Gastroenterology | © 1995-2008 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.This information does not replace the advice of a doctor. Healthwise disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.
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