Difficult colonoscopies in the propofol era.

Area of Science:

• Gastroenterology
• Anesthesiology
• Medical Quality Improvement

Background:

• Colonoscopy is a common procedure often performed under deep sedation.
• Adverse events can occur during colonoscopy, impacting patient safety and procedure success.
• Understanding risk factors is crucial for improving colonoscopy outcomes.

Purpose of the Study:

• To investigate the relationship between endoscopic practice and adverse events during colonoscopy.
• To identify predictors of complications in patients undergoing deep sedation for colonoscopy.
• To evaluate the influence of anesthesiological factors on colonoscopy difficulty and adverse events.

Main Methods:

• Retrospective analysis of 617 colonoscopies performed under deep sedation.
• Inclusion of patient clinical data, bowel preparation quality, endoscopist/anesthetist experience, and procedure duration.
• Logistic regression analysis to identify risk factors for adverse events.

Main Results:

• A 5% rate of adverse events was observed.
• Key risk factors for complications included female gender, less experienced endoscopists, inadequate bowel preparation, and longer procedure duration (>17.5 minutes).
• Higher ASA scores (e.g., ASA 2) were associated with reduced risk.

Conclusions:

• Colonoscopy-related adverse events are primarily associated with patient factors, procedural elements, and endoscopist experience.
• Anesthesiological factors did not significantly influence the likelihood of difficult procedures or complications.
• Improving bowel preparation and endoscopist training may reduce adverse events.