Despite advances in bowel preparation methods, the quality of bowel preparation in some patients undergoing colonoscopy remains unsatisfactory.
The effect of telephone re-education on the day before colonoscopy on the quality of bowel preparation and other outcome measures had not been studied.
Professor Xuegang Guo and colleagues from California, USA conducted a prospective colonoscopist-blinded study.
All patients received regular instructions during a visit to discuss colonoscopy.
Those scheduled for colonoscopy were randomly assigned to receive telephone re-education on the day before colonoscopy for bowel preparation or no telephone re-education.
The team's primary outcome was the rate of adequate bowel preparation.
|Polyp detection rate was 38% in the telephone re-education|
The researchers' secondary outcomes included polyp detection rate (PDR), non-compliance with instructions, and willingness to repeat bowel preparation.
A total of 605 patients were randomized, 305 to the telephone re-education group and 300 to the control group.
In an intention-to-treat analysis of the primary outcome, adequate preparation was found in 82% vs 70% of telephone re-education and control patients, respectively.
The research team found that polyp detection rate was 38% vs 25% in the telephone re-education and control group, respectively.
Among patients with successful colonoscopy, the Ottawa scores were 3 in the telephone re-education group, and 5 in the control group.
The team observed that fewer patients who showed non-compliance with instructions were found in the telephone re-education group.
The researchers' observed no significant differences between the two groups with regard to willingness to have a repeat bowel preparation.
Professor Guo's team concludes, "Telephone re-education about the details of bowel preparation on the day before colonoscopy significantly improved the quality of bowel preparation and polyp detection rate."