What is a Flexible Sigmoidoscopy?

A flexible sigmoidoscopy is a procedure that looks at the lower part of the large bowel, especially the rectum and the left side of the colon. A thin, flexible camera is passed gently through the back passage.

This test may be used to assess symptoms such as:

• Bleeding from the back passage
• A change in bowel habits
• Diarrhoea
• Lower abdominal discomfort
• Bowel conditions such as colitis that need review

During the procedure, the doctor may also take biopsies or remove small polyps if needed.

Before Your Procedure

To get a clear view, the lower bowel needs to be empty.

You may be asked to:

• Avoid food for several hours before the test
• Use an enema before coming in, or follow other bowel preparation instructions
• Tell us about any blood thinners, diabetes medicines, or allergies
• Wear loose, comfortable clothing
• Arrange for someone to take you home if sedation is planned

Please note: Please follow the exact preparation instructions given by our office, especially regarding the enema or bowel prep.

What to Expect During the Procedure

Our team will make every effort to help you feel relaxed and at ease.

During the procedure:

• You will usually lie on your left side with your knees bent
• The doctor may first do a brief rectal examination
• The flexible scope is then passed gently into the lower bowel
• Air or gas is used to open the bowel slightly for a better view
• If needed, biopsies or small polyp removal may be done during the same procedure

You may feel:

• Cramping
• Bloating
• The urge to open your bowels
• The urge to pass wind

This is normal and usually passes quite quickly.

After the Procedure

After the test:

• You may feel a little bloated for a short time
• You can usually eat and drink afterwards unless told otherwise
• If you did not have sedation, most people return to their usual activities the same day
• If you had sedation, you should rest and avoid driving, alcohol, machinery, and important decisions for 24 hours