What are the risks for a colonoscopy?

There are only a few risks associated with a colonoscopy, some of these may include the following:

• Reacting adversely to the sedative that is used for the procedure
• Experiencing bleeding at the site where a biopsy (tissue sample) was done or if abnormal tissue or a polyp was removed.
• Tearing in the rectal wall or colon, this is known as perforation, which is often from the scope or possibly a small tool that is used to perform a biopsy.

Your doctor is likely to discuss all the risks of the procedure with you in order to put your mind at ease. Bear in mind that any risks and complications associated with a colonoscopy are rare. When performed by a qualified and experienced specialist, it is a common, quick and generally safe procedure.

If, however, after your test, you experience any of the below, then contact your doctor immediately:

• Rectal bleeding that is heavy
• Extreme dizziness and vomiting
• A firm or swollen belly (although bloating and cramping after the procedure is normal and may cause some discomfort, it is when these are extremely painful and impact your ability to function that there may be cause for concern)
• Having severe abdominal pain