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Study shows unsedated colonoscopy for colorectal cancer screening well accepted by patients
Date:10/26/2009

OAK BROOK, Ill. October 26, 2009 Researchers from Taiwan report in a new study that unsedated colonoscopy for primary colorectal cancer screening is well accepted in a majority of patients. Sedation is typically used for colonoscopy to make the patient feel comfortable during the procedure. In Taiwan, colonoscopy is performed less frequently than sigmoidoscopy for colorectal cancer screening due to concerns over cost and availability. While sigmoidoscopy is generally accepted as a well tolerated procedure without sedation, many physicians and patients assume colonoscopy requires sedation for patients to be comfortable. Researchers compared unsedated colonoscopy with sigmoidoscopy to analyze factors associated with acceptance of the procedures and need for sedation. The study appears in the October issue of GIE: Gastrointestinal Endoscopy, the monthly peer-reviewed scientific journal of the American Society for Gastrointestinal Endoscopy.

Colonoscopy is recommended as the primary screening method for colorectal cancer and is the final common pathway for all other recommended screening tests. It is considered the "gold standard" for colorectal cancer screening because of the ability to diagnose and remove polyps (growths) before they become cancer. Colonoscopy utilizes a colonoscope, a tube with a light and video camera on the end, which allows the physician to see the entire colon. If a polyp is found, it can be removed immediately. Flexible sigmoidoscopy consists of a sigmoidoscope, a slender, lighted tube about the thickness of a finger. This allows the physician to look only at the inside of the rectum and lower part of the colon for cancer or polyps. This exam only evaluates about one-third of the colon; the other two-thirds are not examined. If polyps are found, the patient must return for a full colonoscopy.

The advantages of unsedated colonoscopy include the elimination of the risks associated with sedation, especially in patien
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Contact: Anne Brownsey
abrownsey@asge.org
630-570-5635
American Society for Gastrointestinal Endoscopy
Source:Eurekalert

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