A clinical study of electrocochleography monitoring for residual hearing retention during minimally invasive cochlear implant.
10.13201/j.issn.2096-7993.2025.05.006
- Author:
Ruijie WANG
1
;
Jianfen LUO
1
;
Qinglei DAI
1
;
Xiuhua CHAO
1
;
Yifei NI
2
;
Fangxia HU
1
;
Yueran CAO
1
;
Haibo WANG
1
;
Xiaohui ZHOU
2
;
Lei XU
1
Author Information
1. Department of Otolaryngology Head and Neck Surgery，Shandong Provincial ENT Hospital，Shandong University，Jinan，250022，China.
2. AB China，Clinical Research International.
- Publication Type:Journal Article
- Keywords:
cochlear implantation;
electrocochleography;
residual hearing
- MeSH:
Humans;
Cochlear Implantation/methods*;
Audiometry, Evoked Response;
Cochlear Implants;
Male;
Female;
Adult;
Middle Aged;
Monitoring, Intraoperative;
Adolescent;
Young Adult;
Minimally Invasive Surgical Procedures;
Child;
Aged;
Postoperative Period
- From:
Journal of Clinical Otorhinolaryngology Head and Neck Surgery
2025;39(5):425-432
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the application value of intraoperative electrocochleography（ECochG） monitoring technique and insertion techniques in cochlear implant（CI） and analyze its relationship with postoperative residual hearing（RH） preservation. Methods:Thirty-one patients（35 ears） who received CI in our hospital from June 2022 to July 2024 were enrolled. The Advanced Bionics Active Insertion Monitoring（AIM） system was used for real-time ECochG monitoring during surgery. Intraoperative cochlear microphonics （CM） waveform changes were recorded and analyzed in relation to postoperative RH preservation. Results:①ECochG recordings were successfully obtained in 34 of 35 ears （97.1%）. ②According to Harris classification, there were 7 ears（20.6%） of Type A（rising）, 7 ears（20.6%） of Type C（declining）, 8 ears（23.5%） of Type CC（fluctuating）, and 12 ears（35.3%） of Type D（no response）. ③The total CM amplitude decrease was significantly moderately correlated with postoperative low-mid frequency hearing loss（r=0.67, P=0.017）. The total CM amplitude decrease was significantly moderately correlated with postoperative low frequency hearing loss（r=0.65, P=0.023）. ④For the mean amplitude variation, the Amax was 30.70 μV, the Amin was 8.64 μV, and the Aend was 18.27 μV. ⑤Sixteen cases completed postoperative follow-up, with an average low-mid frequency（125-1 000 Hz） residual hearing loss of 15.25 dB HL and a RH preservation rate of 87.5%. Conclusion:Intraoperative ECochG monitoring can effectively predict postoperative residual hearing changes, effectively guide surgical manipulation, and improve residual hearing preservation rate.
