Sigmoidoscopy – Endoscopic Examination

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What is a sigmoidoscopy?

During a sigmoidoscopy, the doctor examines the lining of the rectum and the lower part of the large intestine using a flexible scope. Among other things, this procedure can be used to determine the cause of rectal bleeding, changes in bowel habits, pain, or other intestinal symptoms.

How is a sigmoidoscopy performed?

To ensure the best possible conditions for the examination, the lower part of the colon must be emptied before the procedure. The examination itself typically lasts 10–20 minutes, but the duration may vary if, for example, tissue samples need to be taken.

After the examination, the doctor can usually tell you the results right away and let you know whether further treatment or follow-up is needed. If tissue samples were taken, you will be told how and when you can expect the results of the tests.

Patient information

The Examination Process

Before the study

To ensure the best possible conditions for the examination, the lower part of the colon must be emptied before the examination. You must use an enema (Klyx® 240 ml) approximately 2 hours before the exam. As a general rule, you may eat, drink, and take your usual medications unless otherwise agreed upon. If you are scheduled to receive general anesthesia or sedation, you must follow the agreed-upon fasting instructions.

During the study

During the exam, the doctor examines the lining of the rectum and the lower part of the large intestine using a flexible scope. Air is blown into the intestine during the exam to provide a clear view, which may cause a feeling of pressure in the abdomen and the urge to pass gas. If necessary, the doctor may take tissue samples or remove polyps. The exam typically lasts 10–20 minutes.

After the study

If you have not received anesthesia or sedatives, you may go home immediately after the exam. Otherwise, you should expect to remain under observation for about 30–60 minutes. You may eat and drink as usual after the exam, but there may be air in your intestines, which can cause temporary bloating or discomfort. The doctor can usually give you the results right away, and if tissue samples were taken, you’ll be told when you can expect the results.