摘要
目的探讨以活体豚鼠构建耳内镜解剖及手术操作训练动物模型的可行性。方法以8只健康成年豚鼠为实验动物,通过开放上鼓室并磨除外耳道上壁建立满足耳内镜进行观测和操作的空间,构建耳内镜操作的模型。由同一名住院医师分别在8只豚鼠完成耳内镜下颞骨的解剖开放及基本手术步骤,评估内镜下手术操作的难度及完成情况;并测量乳突开放后的前后径、上下径,上鼓室外侧壁以及外耳道上壁开放后的前后径、上下径,以及耳内镜的最大进镜深度。结果内镜下清晰展现豚鼠鼓室内精细结构,除了鼓索神经的游离保留、去除外侧听骨后暴露镫骨这两个步骤有所难度以外,其余步骤如鼓膜与锤骨的分离、暴露锤砧复合体、去除蜗壳观察蜗轴、内镜下面神经鼓室段暴露等操作均可轻松完成。开放后的乳突前后径和上下径分别为3.56±0.21、3.89±0.16 mm,开放后的上鼓室和外耳道上壁前后径和上下径分别为5.60±0.09 mm、6.02±0.10 mm,耳内镜最大进镜深度为15.14±0.24 mm。结论豚鼠作为耳内镜操作训练动物模型,能够提供较为真实的手术操作体验,有助于初学者进行耳内镜手术基本操作技巧和耳内镜解剖训练。
Objective To investigate the feasibility of constructing an animal model for training of otoscopic anatomy and surgical operation using living guinea pigs.Methods Eight healthy adult guinea pigs were used as experimental animals to construct a model of endoscopic operation by opening the upper tympanic cavity and abrading the upper wall of the external acoustic meatus to establish a space for endoscopic observation and operation.The anatomical opening of the temporal bone and basic surgical steps were performed by the same resident on eight guinea pigs.The resident assessed the difficulty and completion of the endoscopic operation and measured various dimensions,including the anteroposterior and superior/inferior diameters of the mastoid process,the posterolateral wall of the upper tympanic cavity,and the upper wall of the external acoustic meatus,as well as the maximal depth of entry of the endoscope.Results The fine structures of guinea pig tympanic chamber were clearly displayed under otoendoscopy.Except for the two steps of free preservation of the chorda tympani nerve and exposure of the stapes after removal of the ossicles,the other steps,such as separation of the tympanic membrane from the malleus,exposure of the malleus-anvil complex,removal of the cochlea shell to observe the cochlea axis,and exposure of the tympanic segment of the facial nerve under the endoscope,were all easily accomplished.The anterior and posterior diameters of the mastoid after opening were 3.56±0.21 and 3.89±0.16 mm,respectively,and the anterior and posterior diameters of the upper tympanic cavity and the upper wall of the external acoustic meatus after opening were 5.60±0.09 and 6.02±0.10 mm,respectively.The maximum depth of entry of the otoscopic endoscope was 15.14±0.24 mm.Conclusion Using guinea pig as an animal model for otoscopic surgery training can provide a more realistic surgical experience,which is helpful for beginners to be trained in the basic surgical skills of otoscopic surgery and otoscopic anatomy.
作者
解沛
杨冰倩
杨希林
廖华
刘华
Xie Pei;Yang Bingqian;Yang Xilin;Liao Hua;Liu Hua(North China University of Science and Technology,Tangshan,063000,China;Department of Otolaryngology Head and Neck Surgery,Renmin Hospital of Wuhan University;不详)
出处
《听力学及言语疾病杂志》
CAS
CSCD
北大核心
2024年第4期338-341,共4页
Journal of Audiology and Speech Pathology
关键词
豚鼠
耳内镜
动物训练模型
中耳解剖
Guinea pig
Ear endoscopy
Animal training model
Middle ear anatomy
