Dr Robert Sedlack and colleagues from Minnesota provided initial validation of a novel simulation model's fidelity.
The research team evaluated the simulation model's ability to assess competence in colonoscopy skills.
In a prospective, cross-sectional design, each of 39 endoscopists performed a colonoscopy on a novel bovine simulation model.
Staff endoscopists also completed a survey examining different aspects of the model's realism as compared to human colonoscopy.
The researchers compared the groups' simulation performances.
In addition, individual performances were correlated to patient-based performance data.
|Median procedure times on the model were 1350 seconds for novices|
|American Journal of Gastroenterology|
Median model realism evaluation scores were favorable for nearly all parameters evaluated.
The team found that mucosa appearance, endoscopic view, and paradoxical motion parameters received the highest scores.
The researchers noted that during simulation procedures, each group outperformed the less experienced groups in all parameters evaluated.
Specifically, median cecal intubation times were 226 seconds for staff, and 240 seconds for fellows.
The research team observed that median cecal intubation times for novices were 1027 seconds.
Median total procedure times on the model were 468 seconds for staff, 527 seconds for fellows, and 1350 seconds for novices.
The researchers observed that individual cecal intubation times on the simulation model had a very high correlation to their respective patient-based times.
Dr Sedlack's team comments, “Overall, this model possesses a favorable degree of realism and is able to easily differentiate users based on their level of colonoscopy experience.”
“More impressive, however, is the strong correlation between individual's simulated intubation times and actual patient-based colonoscopy data.”
“In light of these findings, we speculate that this model has potential to be an effective tool for assessment of colonoscopic competence.”