Digital live imaging of intraoperative electrocochleography during cochlear implantation: the first 50 patients.
Eur Arch Otorhinolaryngol
; 281(3): 1175-1183, 2024 Mar.
Article
em En
| MEDLINE
| ID: mdl-37646794
ABSTRACT
INTRODUCTION:
Real-time visualization of intraoperative electrocochleography (ECochG) potentials via a digital microscope during cochlear implantation can provide direct feedback during electrode insertion. The aim of this prospective, randomized study of 50 patients was to obtain long-term data with a focus on residual hearing preservation and speech understanding. MATERIAL ANDMETHODS:
Cochlear implantations were performed in 50 patients (26 female, 24 male) with residual hearing using a digital microscope. Patients were randomized into two groups. Intraoperative ECochG potentials were either displayed directly in the surgeon's field of view (picture-in-picture display, PiP) or not directly in the field of view (without picture-in-picture display, without PiP). Residual hearing preservation and speech comprehension were recorded within a 1-year follow-up period, compared between groups (PiP versus without PiP) and to a control group of 26 patients implanted without ECochG.RESULTS:
Mean insertion time was significantly longer in the picture-in-picture group (p = 0.025). Residual hearing preservation after 6 weeks at 250 Hz was significantly better in the picture-in-picture group (p = 0.017). After one year, 76% of patients showed residual hearing in the picture-in-picture group (62% without picture-in-picture technique, p = n.s.). Use of the picture-in-picture technique resulted in better long-term pure tone residual hearing preservation at 250, 500, and 1000 Hz. Speech intelligibility improved by 46% in the picture-in-picture group (38% without picture-in-picture).DISCUSSION:
This study is the first to describe long-term results in a large cohort of cochlear implant patients in whom digital visualization of intraoperative ECochG was used. Our results show that visualization of intraoperative ECochG has a positive effect on residual hearing preservation.Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Implantes Cocleares
/
Implante Coclear
Tipo de estudo:
Clinical_trials
Limite:
Female
/
Humans
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Male
Idioma:
En
Revista:
Eur Arch Otorhinolaryngol
Assunto da revista:
OTORRINOLARINGOLOGIA
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Alemanha