Article

A new electrode for residual hearing preservation in cochlear implantation: first clinical results.

Department of Otorhinolaryngology, Medical University of Vienna, Vienna, Austria.
Acta oto-laryngologica (impact factor: 0.98). 02/2009; 129(4):372-9. DOI:10.1080/00016480802552568 pp.372-9
Source: PubMed

ABSTRACT A so far unattained high rate (100%) of residual hearing preservation in cochlear implantation for electric-acoustic stimulation could be achieved using sophisticated surgical techniques in combination with the MedEl Flex EAS electrode.
This study aimed to gather first audiological and surgical results from the experience gained with the new MedEl Flex EAS electrode array.
Nine patients (aged 7.62-71.32 years) with profound high frequency hearing loss were supplied with this atraumatic electrode, which was designed to preserve residual hearing despite intracochlear insertion of an electrode array. All patients were implanted by the same surgeon.
Hearing preservation was achieved in all patients (complete preservation 44.44%) after a mean follow-up period of 9.73 months. Mean monosyllabic test scores improved from 9% correct with the hearing aid alone to 48% with the cochlear implant and to 65% in the electric-acoustic mode.

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Keywords

cochlear implant
 
cochlear implantation
 
complete preservation 44.44%
 
electric-acoustic mode
 
electric-acoustic stimulation
 
first audiological
 
intracochlear insertion
 
mean follow-up period
 
Mean monosyllabic test scores
 
MedEl Flex EAS electrode
 
new MedEl Flex EAS electrode array
 
patients
 
residual hearing
 
residual hearing preservation
 
sophisticated surgical techniques
 
surgical results