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Hierarchical task analysis of endoscopic sleeve gastroplasty
James Dials1, Doga Demirel2, Tansel Halic3
1Department of Computer Science, Florida Polytechnic University, 4700 Research Way, Lakeland, FL, 33805, USA.
Surgical Endoscopy
|November 30, 2021
Summary
This study developed metrics for assessing endoscopic sleeve gastroplasty (ESG) performance. The developed metrics accurately reflect endoscopist skill, crucial for creating a Virtual Bariatric Endoscopy (ViBE) simulator.
Area of Science:
- Medical simulation
- Bariatric endoscopy
- Surgical training
Background:
- Endoscopic sleeve gastroplasty (ESG) is a minimally invasive procedure for obesity treatment.
- Developing a Virtual Bariatric Endoscopy (ViBE) simulator is a long-term goal for ESG training and assessment.
Purpose of the Study:
- To conduct a task analysis of the ESG procedure.
- To create validated performance metrics for the ViBE simulator.
Main Methods:
- Hierarchical task analysis (HTA) was performed to identify key ESG tasks.
- Performance metrics were derived from HTA and expert input.
- Three blinded raters evaluated seven ESG videos using the proposed metrics.
Main Results:
- A positive correlation was found between task times and performance scores (R=0.886, P=0.008).
- Expert endoscopists demonstrated superior stomach area reduction (34.6% vs. 9.4%, P=0.01) and higher performance scores (23.8 vs. 34.7, P=0.047).
- High inter-rater reliability was achieved, with suturing identified as a critical task (R=0.962, P=0.0005).
Conclusions:
- Task analysis and metric development are foundational for the ViBE simulator.
- Preliminary results indicate the performance metrics accurately assess endoscopist skill.
- Further validation and refinement of metrics are planned.
