Learn About Colonoscopy Screenings

Please note: The information on this website is provided by ColonoscopyAssist™ for educational purposes only. It is not a substitute for professional medical care or advice.

What happens during a colonoscopy?

During a colonoscopy, a physician uses a colonoscope (a long, flexible instrument about 1/2 inch in diameter) to view the lining of the colon. The colonoscope is inserted into the rectum and advanced through the large intestine. If necessary during a colonoscopy, small amounts of tissue can be removed for analysis (a biopsy) and polyps can be identified and entirely removed. In many cases, a colonoscopy allows accurate diagnosis and treatment of colorectal problems without the need for a major operation. - You are asked to wear a hospital gown and remove eyeglasses. - You are given a pain reliever and a sedative intravenously (in your vein); you will feel relaxed and somewhat drowsy. - You will lie on the left side, with your knees drawn up towards your chest. - A small amount of air is used to expand the colon so the physician can see the colon walls. - You may feel mild cramping during the procedure; cramping can be reduced by taking slow, deep breaths. - The colonoscope is slowly withdrawn while the lining of your bowel is carefully examined. - The procedure lasts from 30 minutes to one hour.