Gastrografin/Barium Enema

A gastrografin/barium enema is an x-ray study of the large bowel (colon). A liquid contrast agent is introduced into the large bowel, coating the lining so that it can be visualised on a series of x-rays.
A gastrografin or barium enema is performed for:

• A change in bowel habit (looser or blood) persistent for 6 weeks,
• Suspected neoplasia,
• Chronic or recurrent lower gastrointestinal blood loss,
• Inflammatory bowel disease,
• Evaluation after surgery - fistula, or prior to reanastomosis,
• Large bowel obstruction,
• Suspected perforation or high risk for intestinal perforation.
  

The role of a gastrografin/barium enema is very limited these days as the increasing use of colonoscopy and CT colonography are now first line imaging for the bowel.

It is imperative to follow the instructions closely as the large colon needs to be completely empty and clean to ensure optimal images are obtained. You will be give special instructions when your appointment is made.

It is important to inform a member of staff as soon as possible if you are pregnant or suspect you are pregnant BEFORE the test is performed. The examination may not be appropriate or special considerations or precautions might need to be taken

You will be required to remove clothing from the waist down (including underwear) and change into a hospital gown. You will be placed on an x-ray bed and a small lubricated tube will be inserted into your rectum and taped into place.

A contrast liquid will slowly flow into the bowel through the tubing and the doctor views it from a screen. Once the liquid has entered, you will then be placed in different positions on the x-ray table and images of the small bowel will be obtained. It may become slightly uncomfortable but it is important to retain the liquid until the examination is completed.

After the test is completed the liquid will pass through quickly and you will be directed to a neighbouring toilet. It is important to drink plenty of fluids to help remove the contrast. It is not uncommon to experience white bowel motions for a couple of days after the examination.

For safety reasons there cannot be anyone in the room during the procedure and relatives must wait outside. A staff member will be behind the glass window a short distance away watching the patient at all times during the scan should there be any concerns.