1
When is a left-sided colonoscopy performed?
A left-sided colonoscopy allows for the examination of the left side of the large intestine, the rectum, and the anus. This enables the detection, partial treatment, and monitoring of diseases affecting these organs.
Since the large intestine cannot be fully visualized during left-sided colonoscopy, it is primarily used to determine activity in ulcerative colitis, for follow-up care of rectal tumors, or in cases of serious underlying diseases with a high risk of sedation.
2
Procedure
We usually perform this examination without sedatives. However, if you would like a sedative, we can administer a sleep and sedative medication (propofol) through an intravenous cannula in your arm. A thin, flexible “tube” with a light source and camera attached to the tip is then inserted through the anus into the cleaned end of the colon. By closely examining the mucous membrane, pathological changes can be detected. If necessary, tissue samples can be taken or polyps (usually benign growths on the mucous membrane, which can however develop into malignant tumors over several years) can be removed. The examination takes about 30 minutes, and the entire procedure, including preparation and recovery (if sedation is used), takes about 1 to 1.5 hours.
3
Preparation
Unlike a colonoscopy, a sigmoidoscopy does not require you to take a laxative. The left side of the intestine can usually be adequately cleansed by administering small enemas via the anus. You will receive these enemas at our practice approximately 30 minutes before the examination. If you are taking blood-thinning medication or are diabetic, please discuss with your family doctor at least one week before the examination whether you should pause this medication before the sigmoidoscopy. Please do not hesitate to contact us, if you have any questions.
4
After the examination
If a sedative (propofol) has been administered, you must not drive a vehicle or operate machinery for 12 hours, and you should not sign any legally binding documents.
After the examination, you may experience a slight feeling of pressure in your abdomen for a few hours due to increased air in the intestine.