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Original article
Available online 19 January 2024
Clinical experience with the Nurotron™ cochlear implant in a Spanish-speaking postlingual population: Clinical safety and audiological results
Experiencia clínica con el implante coclear Nurotron™ en una población postlingual hispanohablante: seguridad clínica y resultados audiólogicos
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Leonardo Elías Ordóñez Ordóñeza,b,
Corresponding author
otorrino@unisanitas.edu.co

Corresponding author.
, Esther Sofía Angulo Martínezc, Silvia Carolina Vanegasa,d, Silvia Raquel Rodríguez Montoyab,e
a Clínica Universitaria Colombia (Clínica Colsanitas), Fundación Universitaria Sanitas (Unisanitas); Keralty. Grupo de investigación Anaboleas, Bogotá, Colombia
b Universidad Militar Nueva Granada, Hospital Militar Central, Bogotá, Colombia
c Infecciones y Salud en el Trópico, Grupo de investigación Anaboleas, Bogotá, Colombia
d Rehabiltación Infantil, Clínica Universitaria Colombia (Clínica Colsanitas), Fundación Universitaria Sanitas (Unisanitas); Keralty. Grupo de investigación Anaboleas, Bogotá, Colombia
e Rehabilitación Auditivo Verbal, Universidad Nacional de Colombia, Bogotá, Colombia
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Received 11 February 2023. Accepted 25 June 2023
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Tables (4)
Table 1. Characteristics of the study population (n = 31).
Table 2. Clinical findings of the study population (n = 31).
Table 3. Language discrimination in patients from the study.
Table 4. Outcomes regarding tinnitus in the study population.
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Abstract
Objective

to assess clinical safety and postoperative audiological outcomes in postlingual deafness Spanish speaking patients, who underwent surgery with Nurotron™ cochlear implant.

Material and methods

Retrospective descriptive case series study. We performed follow-up of complications and audiological measurements before and after cochlear implantation. Patients with bilateral severe to profound sensorineural hearing loss or patients with unilateral deafness with/without tinnitus were included. Repeated-measures within-subjects for assess pure tone thresholds and speech performance (bilingual test) with a detailed monitoring to establish security or adverse effects were performed. Analysis of variance tests, repetitive measures, were used for statistical analysis.

Results

31 patients were included, 17 (54.8%) men and 14 (45.2%) women. Mean age at the time of surgery was 49.82 ± 18.8 years. The mean follow-up of the group was 31.56 ± 9.57 months (minimum = 19.6 months and maximum = 52.50 months). As major complication one patient (3.23%) had a hard failure that required removal and re-implantation. 25.8% of the patients presented minor complications, the most frequent being vertigo/unsteadiness in 22.6%.

The mean of language discrimination (free field at 65 dB SPL) was 62.19% ± 16.66; being 69.82% ± 7.35 in the group of severe to profound bilateral sensorineural hearing loss. A statistically significant reduction was observed in patients with tinnitus, assessed using the visual analogue scale, preoperative = 7.2 ± 1,6 vs postoperative (18months postoperative) = 1.7 ± 1.3 (p < .001).

Conclusions

The Nurotron™ cochlear implant shows satisfactory audiological results, in accordance with what has been reported in the literature. Minor complications were similar to previous studies, but the percentage of hard failure should continue to be observed, which was higher than other reports with comparable follow-up.

Keywords:
Cochlear implants
Hearing loss
Sensorineural hearing loss
Deafness
Tinnitus
Abbreviations:
SNHL
CI
SSD
PLD
PTA
VAS
RW
CSF
IAC
ESD
Resumen
Objetivo

evaluar la seguridad clínica y resultados audiológicos postoperatorios en pacientes de habla hispana con sordera postlingual, que recibieron implante coclear Nurotron™.

Materiales y métodos

Estudio descriptivo retrospectivo tipo serie de casos. Se hizo seguimiento de complicaciones y mediciones audiológicas antes y después del implante coclear. Se incluyeron pacientes con pérdida auditiva neurosensorial bilateral severa a profunda o pacientes con sordera unilateral con/sin tinnitus. Se realizaron medidas repetidas dentro de los sujetos para evaluar los umbrales de tonos puros y el rendimiento del habla (listados de bisílabas), así como seguimiento clínico para establecer la seguridad del dispositivo. En el análisis estadístico se utilizaron análisis de la varianza y pruebas de medidas repetitivas.

Resultados

se incluyeron 31 pacientes, 17(54,8%) hombres y 14(45,2%) mujeres. La edad media en el momento de la cirugía fue de 49,82 ± 18,8años. El seguimiento medio fue de 31,56 ± 9,57meses (mínimo = 19,6meses y máximo = 52,50meses). Como complicación mayor un paciente (3,23%) tuvo un fallo técnico que requirió remoción y reimplantación. El 25,8% de los pacientes presentaron complicaciones menores, siendo la más frecuente el vértigo/inestabilidad en el 22,6%.

La media de discriminación del habla (campo libre a 65 dB SPL) fue de 62,19% ± 16,66; siendo del 69,82% ± 7,35 en el grupo de hipoacusia neurosensorial bilateral severa/profunda. Se observó una reducción estadísticamente significativa en los pacientes con tinnitus, evaluados mediante la escala analógica visual, preoperatorio = 7,2 ± 1,6 vs postoperatorio (18 meses postoperatorio) = 1,7 ± 1,3 (p < 0,001).

Conclusiones

El implante coclear Nurotron™ muestra resultados audiológicos satisfactorios, acordes con lo reportado en la literatura. Las complicaciones menores fueron similares a estudios previos, pero se debe continuar observando el porcentaje de fallo técnico que fue superior a otros reportes con seguimiento equiparable.

Palabras clave:
Implante coclear
Pérdida auditiva
Hipoacusia neurosensorial
Sordera
Tinnitus

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