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

ts with comorbidities; a reduction in the recovery time after the procedure; a decrease in the need for cardiopulmonary monitoring; and a significant reduction in cost.

"In Taiwan and many Asian countries, sedation is not routinely available and affordable, limiting the use of colonoscopic screening. When choosing between unsedated colonoscopy and sigmoidoscopy for screening, most patients undergo sigmoidoscopy because the majority of doctors and patients consider unsedated colonoscopy to be poorly accepted," said study lead author Hsiu-Po Wang, MD, National Taiwan University Hospital. "We compared patients who underwent either unsedated colonoscopy or sigmoidoscopy for primary colorectal cancer screening and found no significant differences in pain scores, patient acceptance, or need for sedation."

Patients and Methods

The prospective study was conducted from September 2006 to March 2007 by four experienced endoscopists at the Health Management Center of National Taiwan University Hospital. Patients who had not undergone previous sigmoidoscopy or colonoscopy were considered eligible and were asked to undergo either a sigmoidoscopy or colonoscopy without sedation. The choice of sigmoidoscopy or colonoscopy was at the discretion of the patient. A total of 261 (of approximately 1,400 eligible) patients participated in the study; 176 selected colonoscopy and 85 selected sigmoidoscopy. If the patient expressed intolerance of the unsedated examination, the patient could elect to stop the examination or receive sedation. All procedural variables, including biopsy (tissue sample), polypectomy (polyp removal), and other therapeutic procedures; time spent in the scope insertion phase; and total procedure time were recorded. To assess disparities in endoscopists' skill, insertion time was stratified by procedure type and was compared among the endoscopists.

Pain was evaluated by an 11-point visual analog scale from 0 to 10 (0: no pain
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Contact: Anne Brownsey
abrownsey@asge.org
630-570-5635
American Society for Gastrointestinal Endoscopy
Source:Eurekalert

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