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

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.

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.