This page has information for patients referred for CT abdomen and pelvis with 48 hour preparation at North Bristol NHS Trust.
Please follow these instructions to ensure adequate bowel preparation for this examination.
To prepare your bowel for your CT Colonography you will need to drink mixtures of water and Gastrografin. The instructions for this are in this leaflet. Gastrografin often causes diarrhoea. The amount of diarrhoea is very variable. Please make sure you have easy access to a toilet during this 2 day preparation period.
It is very important to drink plenty of fluid during the entire period. You may become dehydrated otherwise. For this examination to be successful, please follow these instructions.
How to prepare your Gastrografin mixture:
- Pour 1 bottle of Gastrografin (20ml) into a glass.
- Into the same glass, add at least 200ml or half a pint of water. You can add fruit squash/cordial if you prefer.
- Stir with a spoon until mixed well.
Two days before your appointment
Prepare and drink 1 Gastrografin mixture with a meal.
One day before your appointment
Prepare and drink 1 Gastrografin mixture with a meal.
On the day of your appointment
In the morning prepare 1 Gastrografin mixture.
Drink this slowly over the 1.5 hours before your appointment.
© North Bristol NHS Trust. This edition published December 2024. Review due December 2027. NBT003566
Imaging Department Contact Centre
If you are unable to attend your appointment please let us know as soon as possible. You can also contact the Imaging Department Contact Centre if you wish to change or discuss your appointment.
Telephone: 0117 414 8989
