OBJECTIVE: The aim of this study was to analyze vestibular function in cochlear implant (CI) patients for iatrogenic damage to vestibular function. METHODS: Prospective clinical study. Tertiary care audiological center. Twenty-five subjects receiving surgery for cochlear implantation during 2012 and 2013 were analyzed. Both vestibulo-ocular and vestibulo-spinal responses before and 2 months after CI surgery were evaluated using several tests: analysis of spontaneous nystagmus, head shaking test (HST), and head impulse test recorded by videooculography; caloric stimulation at 44° and 30° in both ears; cervical evoked myogenic potentials and static stabilometry. Residual cochlear function was tested by air-conduction pure-tone audiometry. RESULTS: Our tests showed damage to vestibular receptors after CI surgery in 12% of the patients; in particular, horizontal semicircular canal function and saccular function had lower responses after surgery. Audiometric results showed poorer thresholds after CI surgery. The static stabilometry results indicate good vestibulo-spinal responses and patients did not report disequilibrium nor postural deficit. CONCLUSION: All data suggest an efficient vestibular compensation mechanism in CI patients.
OBJECTIVE: The aim of this study was to analyze vestibular function in cochlear implant (CI) patients for iatrogenic damage to vestibular function. METHODS: Prospective clinical study. Tertiary care audiological center. Twenty-five subjects receiving surgery for cochlear implantation during 2012 and 2013 were analyzed. Both vestibulo-ocular and vestibulo-spinal responses before and 2 months after CI surgery were evaluated using several tests: analysis of spontaneous nystagmus, head shaking test (HST), and head impulse test recorded by videooculography; caloric stimulation at 44° and 30° in both ears; cervical evoked myogenic potentials and static stabilometry. Residual cochlear function was tested by air-conduction pure-tone audiometry. RESULTS: Our tests showed damage to vestibular receptors after CI surgery in 12% of the patients; in particular, horizontal semicircular canal function and saccular function had lower responses after surgery. Audiometric results showed poorer thresholds after CI surgery. The static stabilometry results indicate good vestibulo-spinal responses and patients did not report disequilibrium nor postural deficit. CONCLUSION: All data suggest an efficient vestibular compensation mechanism in CI patients.
Authors: Magdalena Sosna-Duranowska; Grazyna Tacikowska; Elzbieta Gos; Anna Krupa; Piotr Henryk Skarzynski; Henryk Skarzynski Journal: Front Neurol Date: 2021-05-21 Impact factor: 4.003
Authors: Pere Ramón Rodríguez-Rubio; Caritat Bagur-Calafat; Carlos López-de-Celis; Elena Bueno-Gracía; Rosa Cabanas-Valdés; Ernesto Herrera-Pedroviejo; Montserrat Girabent-Farrés Journal: Int J Environ Res Public Health Date: 2020-10-22 Impact factor: 3.390
Authors: Magdalena Sosna; Grazyna Tacikowska; Katarzyna Pietrasik; Henryk Skarzynski; Piotr H Skarzynski Journal: Braz J Otorhinolaryngol Date: 2019-11-20