[术中圆窗电耳蜗图用于评估人工耳蜗植入安全性的应用]
[Use of intraoperative round window electrocochleography for assessment of cochlear implantation safety].
作者信息
Wang Lin'e, Cao Keli, Wang Zhen
机构信息
Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China.
出版信息
Lin Chuang Er Bi Yan Hou Ke Za Zhi. 2006 Sep;20(18):822-4.
OBJECTIVE
To objectively evaluate whether cochlear implantation surgery made damage to cochlear basal membrane or not through analyzing the change of the threshold of cochlear microphonic (CM) of round window electrocochleography before and after inserting electrode during cochlear implantation surgery.
METHOD
Round window electrocochleography was performed on 40 cases with profound sensorineural deafness under general anesthesia in the standard operating room in order to analyze the change of the threshold of cochlear microphonic (CM) of round window electrocochleography before and after inserting electrode during cochlear implantation surgery.
RESULT
Among the 40 cases, thresholds of cochlear microphonic (CM) before and after inserting electrode during cochlear implantation surgery were similar in 39 cases. The thresholds of cochlear microphonic (CM) after inserting electrode decreased about 5 dB at certain frequency. The thresholds of cochlear microphonic (CM) after inserting electrode increased 20-50 dB in only one case. There was a sense of resistance in implanting the electrodes in this patient.
CONCLUSION
Use of round window electrocochleography may objectively evaluate whether cochlear implantation surgery make damage to cochlear basal membrane or not.
目的
通过分析人工耳蜗植入手术中电极插入前后圆窗电耳蜗图中耳蜗微音电位（CM）阈值的变化，客观评估人工耳蜗植入手术是否对耳蜗基底膜造成损伤。
方法
在标准手术室对40例重度感音神经性聋患者在全身麻醉下进行圆窗电耳蜗图检查，以分析人工耳蜗植入手术中电极插入前后圆窗电耳蜗图中耳蜗微音电位（CM）阈值的变化。
结果
40例患者中，39例人工耳蜗植入手术中电极插入前后耳蜗微音电位（CM）阈值相似。1例患者电极插入后在特定频率下耳蜗微音电位（CM）阈值下降约5dB。仅1例患者电极插入后耳蜗微音电位（CM）阈值升高20 - 50dB，该患者在植入电极时有阻力感。
结论
使用圆窗电耳蜗图可客观评估人工耳蜗植入手术是否对耳蜗基底膜造成损伤。
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