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Validation of a 3D-Printed Percutaneous Injection Laryngoplasty Simulator: A Randomized Controlled Trial.

Julianna C Kostas1, Andrew S Lee1, Amit Arunkumar1

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Summary

A 3D-printed laryngeal simulator improved percutaneous injection laryngoplasty (PIL) skills for senior residents. This accessible tool may enhance training for advanced laryngology trainees practicing awake office procedures.

Keywords:
3D printinginjection laryngoplastylaryngologysurgical educationsurgical simulationvalidation

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Area of Science:

  • Otolaryngology
  • Medical Simulation
  • Surgical Education

Background:

  • Simulation is crucial for training office procedures in laryngology.
  • Existing simulators for awake procedures lack validated performance improvement studies.
  • Percutaneous injection laryngoplasty (PIL) is an office procedure requiring specialized training.

Purpose of the Study:

  • To evaluate the transfer validity of a 3D-printed laryngeal simulator for percutaneous injection laryngoplasty (PIL).
  • To compare trainee performance using the simulator versus conventional materials.
  • To assess the simulator's impact on competency in awake laryngology procedures.

Main Methods:

  • A single-blinded randomized controlled trial was conducted with otolaryngology residents.
  • Participants were randomized to receive conventional education with or without simulator training.
  • Performance was assessed using objective structured assessment of technical skills and a PIL-specific checklist.

Main Results:

  • Senior residents using the simulator showed significantly improved tissue respect during the trans-thyrohyoid approach (p < 0.0005).
  • No significant performance differences were observed between groups for junior residents.
  • Baseline knowledge and confidence levels were similar between the simulator and control groups.

Conclusions:

  • A low-cost, high-fidelity 3D-printed PIL simulator enhances performance in senior otolaryngology residents.
  • This accessible simulator can serve as a valuable adjunct for advanced trainees practicing PIL.
  • The study demonstrates the transfer validity of simulation for awake laryngology office procedures.