Open laryngeal surgery training on ex-vivo ovine model: Development and dissection experience

Abstract

ObjectivesTo develop and validate an ex-vivo dissection model suitable for open laryngeal surgery (open partial laryngectomy and total laryngectomy) training. MethodsA fresh ex-vivo 6-months old ovine model was tested by experienced laryngologists and validated during two international dissection courses on open laryngeal surgery held in December 2018 and 2019. Each participant completed a survey to subjectively evaluate the dissection experience. Likewise, four experienced laryngologists rated their experience. Statistical comparison of these ratings was performed. ResultsThe suitability of the ex-vivo ovine model for open laryngeal surgery was assessed among 28 head and neck surgeons with a mean experience of 6.3 years and 4 expert laryngologists. The feedback from all the participants was excellent with a mean overall impression of 9.5 (± 0.7 SD) and a mean recommendation score of 9.6 (± 0.6 SD) for further use. No statistically significant differences were found comparing neither the overall grade (p= 0.63) nor the recommendation rating (p= 0.24), testifying that even for expert laryngologists this remains a viable model for open laryngeal surgery training. ConclusionsThe complexity of open laryngeal surgery makes simulation an attractive option for developing skills that are transferrable to operating setting. Due to the anatomic resemblance with the human, the ex-vivo ovine model is herein proposed as a training model for open laryngeal surgery. Validation among beginners and expert laryngologists revealed its suitability as effective teaching means in laryngectomies.