What happens during a colonoscopy?
You’ll be given a sedative and painkiller before your colonoscopy to make sure you're comfortable and relaxed. You’ll be asked to lie on your side and your doctor will insert the colonoscope gently into your rectum, using lubricating jelly to make the treatment as comfortable as possible.
Air will be pumped into your bowel so the colonoscope can pass through more easily.
Once in place the doctor will use the colonoscope to examine your bowel via images on a monitor. You may be asked to move slightly to help the doctor examine different parts of your bowel. If a biopsy or polyps removal is necessary, this can be done at the same time by passing small instruments through the colonoscope. The samples are then sent to a laboratory for investigation.