Ding L, Zhang L, Li J, Lin T. Electrode-Modiolus Distance Affects Speech Perception for Lateral Wall Electrodes.
Otol Neurotol 2023;
44:e702-e709. [PMID:
37939358 DOI:
10.1097/mao.0000000000004019]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
OBJECTIVES
The goal of this study was to use cone-beam computed tomography to locate the electrode-modiolus distance (EMD) and correlate this with speech perception in cochlear implant (CI) recipients of the 31.5-mm lateral wall (LW) electrode arrays.
STUDY DESIGN
Retrospective review.
PATIENTS
Forty-five child CI recipients with prelingual profound sensorineural hearing loss of inserted 31.5-mm LW arrays listening with a CI-alone device.
INTERVENTIONS
Stepwise forward multiple linear regression was performed to control and reduce the variability in implant performance to determine whether EMD affects speech perception.
MAIN OUTCOME MEASURES
Electrode location (angular insertion depth [AID], EMD), together with the electrode impedance (EI), surgical approach, sex, CI age, and preimplant hearing aid usage were estimated as independent variables. The dependent variables were the Meaningful Use of Speech Scale (MUSS) and parents' evaluation of children's aural/oral performance (PEACH) assessed with the CI alone at 12 months postactivation.
RESULTS
EMD and CI age were predictive variables for PEACH/MUSS. A negative correlation was found between AID and EMD (r = -0.56, p < 0.01), whereas EMD had a moderately positive correlation with EI (r = 0.32, p < 0.01).
CONCLUSIONS
The best "location-related" predictor of postoperative speech perception was EMD with a 31.5-mm array among CI-alone users.
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