Abstract
BackgroundAchieving the target of 95% colonoscopy completion rate at centres conducting colorectal screening programs is an important issue. Large centres and teaching hospitals employing endoscopists with different levels of training and expertise risk achieving worse results. Deep sedation with propofol in routine colonoscopy could maximize the results of cecal intubation.MethodsThe present study on the experience of a single centre focused on estimating the overall completion rate of colonoscopies performed under routine propofol sedation at a large teaching hospital with many operators involved, and on assessing the factors that influence the success rate of the procedure and how to improve this performance, analyzing the aspects relating to using of deep sedation. Twenty-one endoscopists, classified by their level of specialization in colonoscopic practice, performed 1381 colonoscopies under deep sedation. All actions needed for the anaesthesiologist to restore adequate oxygenation or hemodynamics, even for transient changes, were recorded.ResultsThe "crude" overall completion rate was 93.3%. This finding shows that with routine deep sedation, the colonoscopy completion rate nears, but still does not reach, the target performance for colonoscopic screening programs, at centers where colonoscopists of difference experience are employed in such programs.Factors interfering with cecal intubation were: inadequate colon cleansing, endoscopists' expertise in colonoscopic practice, patients' body weight under 60 kg or age over 71 years, and the need for active intervention by the anaesthesiologist. The most favourable situation - a patient less than 71 years old with a body weight over 60 kg, an adequate bowel preparation, a "highly experienced specialist" performing the test, and no need for active anaesthesiological intervention during the procedure - coincided with a 98.8% probability of the colonoscopy being completed.ConclusionsWith routine deep sedation, the colonoscopy completion rate nears the target performance for colonoscopic screening programs, at centers where colonoscopists of difference experience are employed in such programs. Organizing the daily workload to prevent negative factors affecting the success rate from occurring in combination may enable up to 85% of incomplete procedures to be converted into successful colonoscopies.
Highlights
Achieving the target of 95% colonoscopy completion rate at centres conducting colorectal screening programs is an important issue
The incomplete procedures amounted to 92 and 67 of these were incomplete for technical reasons, 25 due to inadequate bowel preparation
There were 77 anaesthesiological intervention” (AAI) during the procedures (5.2% among the complete colonoscopies and 10.9% among the incomplete colonoscopies; p-value = 0.02) to deal with 28 respiratory(solved using mask ventilation, without any need for intubation) and 39 hemodynamic problems, 8 episodes of regurgitation, and 2 of allergic reactions
Summary
Achieving the target of 95% colonoscopy completion rate at centres conducting colorectal screening programs is an important issue. Successful colonoscopy is related to the polyps detection rate and the percentage of complete colon examinations achieved with cecal intubation Both factors depend on technical issues and Completed colonoscopy rates of 97-99% have been reported and, a rate of 90% is acceptable in routine clinical activity, it is best to aim for at least 95%. The overall colonoscopy completion rates are influenced by the procedure being implemented by trainee doctors and by endoscopists from different specialities (gastroenterological, surgical, or internal medicine). In such cases, strategies have been proposed to improve performance based on auditing programs, adjusting the various endoscopists’ workload in the light of their results [11], or having trainees use auxiliary devices to facilitate cecal intubation [12]
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