Overview
A colonoscopy examines the lining of the large bowel using a long, flexible tube with a camera. Polyps can be removed and tissue samples taken during the test. A sigmoidoscopy is a shorter test that examines only the lower part of the bowel.
Why it is done
- Bleeding from the back passage or blood in the stool
- A lasting change in bowel habits, such as diarrhoea or constipation
- Unexplained abdominal pain, anaemia or weight loss
- To screen for bowel cancer or to remove polyps
Before the test
The bowel must be completely empty for clear views. You will be given a special diet and a laxative preparation to take the day before. Follow the instructions carefully and tell your doctor about any medicines you take.
During the test
Sedation is usually given to keep you comfortable. The test normally takes 20 to 45 minutes.
After the test
You may feel bloated or have mild cramps as air passes. If you had sedation, someone should take you home and you should not drive that day. Your doctor will explain the findings and any biopsy results.
Risks
Colonoscopy is generally safe. Rare risks include bleeding, especially after polyp removal, a tear in the bowel wall and reactions to sedation.
At KIH
KIH's gastroenterology and medicine teams perform complete and limited colon examinations in the hospital's endoscopy suite.
This information is for general education. Your doctor will explain whether this treatment is suitable for you, and its benefits and risks. For a medical emergency, call +92-51-8446666 or go to the nearest emergency department.
