CC BY-NC-ND 4.0 · Laryngorhinootologie 2019; 98(S 02): S142
DOI: 10.1055/s-0039-1686441
Abstracts
Otology

Predicting Auditory Outcomes from Radiological Imaging in Cochlear Implant Patients with Cochlear Nerve Deficiency

Y Li
1   Beijing Tongren Hospital, Capital Medical University, Beijing, P.R.China
,
X Wei
2   Beijing Tongren Hospital, Capital Medical University, Beijing
,
B Chen
2   Beijing Tongren Hospital, Capital Medical University, Beijing
,
Y Gong
2   Beijing Tongren Hospital, Capital Medical University, Beijing
,
Q Fu
2   Beijing Tongren Hospital, Capital Medical University, Beijing
,
T Liu
2   Beijing Tongren Hospital, Capital Medical University, Beijing
,
D Cui
2   Beijing Tongren Hospital, Capital Medical University, Beijing
,
Q Su
2   Beijing Tongren Hospital, Capital Medical University, Beijing
,
Y Shi
2   Beijing Tongren Hospital, Capital Medical University, Beijing
› Author Affiliations
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    Objective:

    To compare imaging and outcome data in cochlear implant (CI) patients with and without cochlear nerve deficiency (CND). Study Design: Retrospective study comparing presurgical imaging (via high-resolution computed tomography and three-dimensional magnetic resonance imaging) to postsurgical auditory outcomes in CI patients with and without CND. Patients: Forty-three CI patients with CND diagnosed according to preoperative imaging were included in the CND group. A control group (non-CND; n = 43) was matched to the CND group in terms of age at implantation, CI device type, preoperative hearing threshold, and sex.

    Results:

    Across all subjects, internal auditory canal (IAC) diameter, cochlear nerve canal (CNC) diameter, and the number of nerve bundles were significantly correlated with all auditory outcome measures (p < 0.0125 in all cases). Across CND subjects, CNC diameter was significantly correlated with SIR, MUSS, and MAIS-IT/MAIS scores (p < 0.0125 in all cases). Auditory outcomes were significantly poorer for CND patients with one rather than two nerve bundles. Across non-CND subjects, CNC diameter was significantly correlated only with SIR scores (p < 0.0125). IAC diameter, CNC diameter, and the number of nerve bundles were significantly smaller, and auditory outcomes were significantly poorer for the CND group than for the non-CND group (p < 0.05 in all cases). Results were similar when data only from patients 5 years old (n = 31) were analyzed.

    Conclusions:

    CNC diameter and the number of nerve bundles can significantly predict auditory outcomes for CI patients with CND. The results suggest that presurgical imaging may be useful in predicting CI outcomes for congenitally deaf patients.


    #
    Professor, MD, PhD Yongxin Li
    Beijing Tongren Hospital, Capital Medical University,
    No 1 Dongjiaominxiang Street Dongcheng District, 100730
    Beijing, P.R.China

    Publication History

    Publication Date:
    23 April 2019 (online)

    © 2019. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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