Department of Otolaryngology - Head and Neck Surgery, University of Toronto, Hospital for Sick Children, Toronto, Canada.
Department of Otolaryngology - Head and Neck Surgery, University of Toronto, Hospital for Sick Children, Toronto, Canada; Khon Kaen Ear, Hearing and Balance Research Group, Department of Otorhinolaryngology, Khon Kaen University, Thailand.
J Int Adv Otol. 2023 Mar;19(2):93-98. doi: 10.5152/iao.2023.22749.
The objective of this study was to evaluate the utility of a caprine model in endoscopic ear surgical education using the index procedures of tympanoplasty and ossiculoplasty. Specifically, this study assessed the face and content validity of the caprine model, and the potential impact of anatomical differences on trainee understanding of human middle ear anatomy.
Twelve otolaryngology trainees attended a 3-hour endoscopic ear surgery course utilizing the caprine model in which they completed canalplasty, tympanoplasty, and ossiculoplasty. Prior to the course, the trainees completed a self-reported needs assessment and knowledge assessment of human middle ear anatomy. Following the course, the trainees repeated the knowledge assessment and completed evaluation and validation questionnaires. Five-point Likert scores were used for the needs assessment and validation questionnaire.
Of the 12 trainees, 9 participated in the study. All domains of the learner needs assessment showed an average improvement of 1 point on the post-course evaluation with 6 of 9 domains being significantly improved using the Wilcoxon signed-rank test (P< .05). The model achieved validation in the domains of face, content, and global content validity with an average Likert score > 4. Knowledge assessment scores increased by 7% (P=.23) after the course compared to before.
The caprine model offers an effective surgical simulation model for endoscopic ear surgery training with good face and content validity. We find it to be readily available and affordable. We currently use it routinely to give otolaryngology residents the experience of endoscopic ear surgery before operating on patients.
本研究旨在评估使用鼓膜成形术和听骨链重建术等索引手术评估羊模型在内窥镜耳部手术教育中的效用。具体而言，本研究评估了羊模型的表面效度和内容效度，以及解剖差异对学员理解人类中耳解剖结构的潜在影响。
12 名耳鼻喉科受训者参加了一个 3 小时的内镜耳部手术课程，使用羊模型完成了耳道成形术、鼓膜成形术和听骨链重建术。在课程之前，受训者完成了对人类中耳解剖结构的自我报告需求评估和知识评估。在课程结束后，受训者重复进行知识评估，并完成评估和验证问卷。需求评估和验证问卷采用 5 分李克特量表。
在 12 名受训者中，有 9 名参加了研究。学习者需求评估的所有领域在课后评估中平均提高了 1 分，其中 6 个领域使用 Wilcoxon 符号秩检验具有显著改善（P<.05）。该模型在表面效度、内容效度和整体内容效度方面得到验证，平均李克特得分为>4。与课前相比，课后知识评估得分增加了 7%（P=.23）。
羊模型为内镜耳部手术培训提供了一种有效的手术模拟模型，具有良好的表面和内容效度。我们发现它易于获得且价格合理。目前，我们常规使用它为耳鼻喉科住院医师提供在患者身上进行内镜耳部手术之前的手术经验。
