Histopathology of thermal effects in endoscopic ear surgery: An experimental animal study

IF 1.6 4区医学 Q2 OTORHINOLARYNGOLOGY Laryngoscope Investigative Otolaryngology Pub Date : 2024-11-26 DOI:10.1002/lio2.1303

İsa Kaya MD, Fetih Furkan Şahin MD, Yiğit Uyanıkgil MD, Canberk Tomruk MD, Cansın Şirin MD

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Abstract

Objective

The potential risk of thermal damage in the transcanal endoscopic ear surgery has been a concerning issue. This study aimed to investigate the histopathological effects of heat exposure of different durations in external auditory canal (EAC) skin and facial nerve tissues.

Methods

This study was conducted on 20 rabbits assigned equally to five groups according to the endoscope-transmitted heat exposure duration: Control group (no exposure), 2, 10, 15, and 30 min. At the end of the procedure, EAC skin and the tympanic segment of facial nerve tissue samples were taken surgically and histopathologically examined.

Results

Significant histopathological thermal damage findings in external auditory canal skin and facial nerve tissues were observed under endoscope-transmitted heat exposure longer than 15 and 10 min, respectively.

Conclusion

This study demonstrated that prolonged exposure of the endoscope-transmitted heat can cause histopathological thermal damage in EAC skin and facial nerve on rabbit subjects.

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耳内窥镜手术热效应的组织病理学：动物实验研究

目的：经耳道内窥镜耳科手术中潜在的热损伤风险一直是一个令人担忧的问题。本研究旨在探讨不同持续时间的热暴露对外耳道（EAC）皮肤和面神经组织的组织病理学影响：本研究以 20 只兔子为研究对象，根据内窥镜透射热暴露持续时间平均分成 5 组：对照组（无暴露）、2 分钟、10 分钟、15 分钟和 30 分钟。实验结束后，通过手术采集 EAC 皮肤和面神经鼓膜组织样本，并进行组织病理学检查：结果：在内窥镜透射热暴露超过 15 分钟和 10 分钟的情况下，外耳道皮肤和面神经组织分别出现了明显的组织病理学热损伤：结论：本研究表明，长时间暴露于内窥镜透射热可导致兔子外耳道皮肤和面神经组织病理热损伤。

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