Defaecating Proctogram and Transit Study

Why are these tests performed?
Proctography looks at how the structures in the pelvis move and co-ordinate when you open your bowels. It examines the cause of people’s symptoms and gives us an indication as to how best to treat you. A transit study looks at how well the colon pushes faeces through the bowel.

What preparation is needed for the tests?
A letter with the appointment will be sent to you in the post and it will include any specific instructions. If you are having a transit study, you will be sent some capsules to take by mouth a few days before you come into hospital.

What do the tests involve?
The proctogram is performed in the X-ray department. You will be given some fluid to drink which shows up on X-ray and women will be asked to insert a tampon to demonstrate what happens to the vagina during the test. Finally, the radiographer will put contrast (about 100ml or a cupful) into the rectum by inserting a short piece of tubing into the anal canal. You will then be asked to sit on a commode (a type of toilet) to try to empty the contrast from your bottom, as if going to the toilet. Whilst doing this, you are behind a curtain giving you privacy. The transit study involves nothing more than a simple X-ray of the abdomen to see how far the capsule and its content have got round the bowel.

What happens after the tests?
You will be allowed home immediately after the test and should feel completely fine afterwards. If you wish to return to work immediately then this should be possible.