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Construct validation of a low-fidelity endoscopic sinus surgery simulator.

Randy M Leung¹, Jerry Leung, Allan Vescan

¹Department of Otolaryngology-Head and Neck Surgery, University of Toronto, Toronto, Canada.

American Journal of Rhinology

|January 31, 2009

Summary

This study evaluated a new low-cost endoscopic sinus surgery (ESS) simulator. While cadaver performance correlated with training, the simulator did not yet show construct validity, requiring further development.

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Area of Science:

Medical Simulation
Surgical Education
Otolaryngology

Background:

A relevant, affordable, and accessible simulator is crucial for widespread adoption in surgical training.
A novel low-cost endoscopic sinus surgery (ESS) simulator was developed, focusing on fundamental skills.
The simulator offers a non-invasive, risk-free, and low-pressure learning environment.

Purpose of the Study:

To assess the construct validity of the developed low-cost ESS simulator.
To determine if the simulator's performance correlates with surgical expertise.

Main Methods:

A stratified randomized crossover-control study design was employed.
Otolaryngology trainees and faculty performed tasks on both the simulator and cadavers.
Performance was evaluated using hand motion analysis, task completion time, and blinded expert assessment.

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Main Results:

Sixteen participants across different training levels were included.
Cadaver performance showed a significant correlation with the participants' training level and prior ESS experience.
The simulator's performance did not demonstrate a statistically significant correlation with training level or experience.

Conclusions:

The current iteration of the ESS simulator lacks demonstrated construct validity.
Ongoing modifications to materials and structure are underway to enhance the simulator.
Further validation and assessment of skill acquisition are planned before potential integration into otolaryngology residency curricula.