A colonoscopy is a procedure commonly performed to screen for rectal polyps, colon cancer and other abnormalities within the colon. To allow for a comprehensive and clear view of the colon, patients are typically required to adhere to strict dietary restrictions prior to the procedure. Specific instructions for colonoscopy preparation may vary and will be provided by the clinic performing the procedure.
Colonoscopy
A colonoscopy is a useful screening tool for the identification of polyps, tumors, ulcers and other abnormalities within the large intestine. While the patient is lying on his side, a flexible, lighted tube called a colonoscope is inserted through the anus. The scope is capable of relaying a video image of the colon and rectum to a monitor that can be viewed by the physician.
Bowel Preparation
To obtain a clear and accurate image, the colon should be as clear of food particles and fecal matter as possible. Patients are often required to begin a restricted diet days before the procedure. In addition, patients are often asked to begin a clear liquid-only diet the day prior to the procedure. Food particles and fecal matter obstruct the view of the colonoscope. Artificial dyes and dark-colored liquids can interfere with the identification of blood within the large intestine. In addition to dietary restrictions, patients are often prescribed a bowel prep that includes laxatives to clear the colon prior to the procedure.
Foods to Avoid
Foods to avoid prior to a procedure include high-fiber foods, such as vegetables, grains, fruits and pastas. Since fiber is not absorbed, it stays within the intestine and promotes the formation of fecal matter. Other dietary items to avoid are red meat and foods that contain red or purple coloring since they can interfere with the detection of intestinal bleeding.
Drinks to Avoid
The use of laxatives in preparation for a colonoscopy often requires the patient to drink plenty of fluids to remain hydrated and flush the digestive tract. However, patients should restrict their intake to clear liquids, such as water, ginger ale and clear sports drinks. Beverages that contain coloring are not recommended because they can interfere with the procedure. Patients scheduled for a colonoscopy should speak to their clinic and obtain specific instructions for preparation prior to the procedure.
Member Comments