Early Hearing Preservation Outcomes Following Cochlear Implantation With New Slim Lateral Wall Electrode Using Electrocochleography.
Otol Neurotol
; 43(4): 443-451, 2022 04 01.
Article
em En
| MEDLINE
| ID: mdl-35170555
ABSTRACT
OBJECTIVE:
Describe early hearing preservation (HP) cochlear implantation (CI) outcomes using a new slim lateral wall electrode (SLWE). STUDYDESIGN:
Prospective cohort study.SETTING:
Tertiary referral center. PATIENTS Adult CI candidates with preoperative low-frequency pure-tone average (LFPTA; 125, 250, 500âHz) ≤60âdB HL. INTERVENTION CI with and without intracochlear real-time electrocochleography (RT-ECochG). MAIN OUTCOMEMEASURE:
HP (LFPTA ≤80âdB HL), LFPTA shift, speech-perception performance measures, postoperative CT reconstruction.RESULTS:
Forty-two subjects were implanted with the SLWE. Thirty patients underwent full insertion without RT-ECochG feedback, and HP was maintained at 3-months postactivation for 7 (23.3%) patients with mean LFPTA shift of 57.5â±â25.6âdB HL. RT-ECochG feedback was utilized on 12 patients, of whom 6 patients had full insertions and 6 patients had anywhere from 1 to 3 electrodes left outside of the cochlea based on RT-ECochG feedback. At 3 months postoperatively, HP was achieved on 10 (83.3%) patients and mean LFPTA shift was 18.9 c 11.7âdB HL. Mean difference between LFPTA threshold shift at 3-months postactivation with and without RT-ECochG was 38.6âdB HL (95% CI, 25.6-51.67). There was an improvement in delta CNC from preoperative to 3-months postactivation when using RT-ECochG, with mean difference 20.7% (95% CI, 3.3-38.1).CONCLUSIONS:
Use of RT-ECochG monitoring during SLWE placement results in fewer full electrode insertions and significantly better HP rates and speech-perception outcomes when compared with unmonitored insertions. Further investigation is needed to evaluate long-term audiologic outcomes to better understand the relationships among ECochG, cochlear trauma, functional outcomes, and HP.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Implantes Cocleares
/
Implante Coclear
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article