What is a defaecating proctogram examination?
It is an investigation to demonstrate the ability of your rectum (lower
bowel) to empty. This area is not clearly seen on plain x-rays,
so barium is used to highlight the area. The examination will be
carried out by a specialist radiographer who is trained to perform
this examination and make a diagnosis. An additional radiographer
or nurse will also be present to support and assist during the
examination. We are a training hospital and a student may be
present during your examination, please inform a member of staff if
this is unacceptable.
How will the investigation be performed?
Once you have booked in at reception you will be taken to change
into a hospital gown. Once in the x-ray room the procedure will be
explained and you will have the opportunity to ask any questions.
Please inform the radiographer if there is a possibility of pregnancy.
Whilst you are lay on your side a small tube will be inserted into your
back passage and your rectum will be filled with barium paste, the
tube is then removed.
You will then be asked to sit on a bed pan and defaecate whilst
x-rays are being taken. This allows the mechanism of bowel
emptying to be evaluated. Though you may feel a little embarrassed,
please be assured we aim to maintain your dignity at all times. The
examination takes approximately 30 minutes.
What are the risks associated with a defecating proctogram?
Proctograms are generally regarded as a very safe test and problems
rarely occur. Potential complications are uncommon and include:
Pain, discomfort or a feeling of fullness when the paste is introduced.
Occasionally, if pain is part of your symptoms, this pain may be
replicated by this procedure.
Damage to the bowel wall (such as a small tear in the lining of the
bowel) occurs rarely, in fewer than 1 in 2000 tests. This damage is
usually minor and may not produce any symptoms.
Defecating Proctogram takes place using fluoroscopy which involves
the use of x-rays; however with modern equipment the risk is low.
Your doctor has recommended this examination because he/she
feels that the benefits are greater than the risk of not having the
examination.
Are there any alternatives to having a defaecating proctogram?
Alternative imaging may be available, but your doctor feels that this
is the most appropriate test for you. Please speak to your referring
doctor, or to the radiologist on the day of your examination.
After your examination
Once complete you will be taken into a changing room with a toilet
where you will be able to dress, then go home.
Your motions may be paler than normal for a few days. You may also
become slightly constipated, please drink plenty of fluids to prevent
this.
Your results
Your results will be sent to the consultant that referred you for this
test. You should expect to hear from the consultant within 3 weeks.
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Author Radiology X-Ray Department
Approved by Radiology Policy Review Group Meeting
Date of Publication 09/11/2023
Reference No PL/1269 (v2)
Review Date 01/11/2026
