Effect of propofol anesthesia on force application during colonoscopy

Area of Science:

• Gastroenterology
• Anesthesiology
• Medical Device Technology

Background:

• Sedation is crucial for patient comfort during colonoscopy.
• Propofol offers deeper sedation than traditional methods, potentially impacting instrument manipulation forces.

Purpose of the Study:

• To compare colonoscope insertion tube forces between propofol anesthesia and moderate sedation.

Main Methods:

• Observational cohort study involving 13 expert and 12 trainee endoscopists.
• 114 patients undergoing routine screening or diagnostic colonoscopy.
• Forces (axial and radial) and examination time measured using a colonoscopy force monitor.

Main Results:

• Propofol anesthesia significantly increased axial and radial forces compared to moderate sedation.
• Examination time was significantly decreased with propofol anesthesia.

Conclusions:

• Propofol sedation is linked to increased forces for colonoscope advancement.
• Despite increased forces, propofol use correlates with shorter colonoscopy examination times.
• Limitations include small sample size, observational design, and non-randomized sedation assignment.