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Otol Neurotol. 2004 Jul;25(4):504-10; discussion 510.

Revision cochlear implant surgery in adult patients with suspected device malfunction.

Author information

1
Department of Otolaryngology-Head and Neck Surgery, University of North Carolina at Chapel Hill, 27599-7070, USA. buchman@med.unc.edu

Abstract

OBJECTIVE:

To report the outcomes of patients that have undergone revision cochlear implant surgery for suspected device malfunction.

STUDY DESIGN:

Retrospective case series.

SETTING:

Academic medical center.

PATIENTS:

Adult cochlear implant patients with devices that fail to lock or maintain a lock but are associated with troubling signs and symptoms.

INTERVENTION:

Revision cochlear implant surgery.

MAIN OUTCOME MEASURES:

Demographics, presenting signs and symptoms, surgical findings, complications, audiologic performance and device analysis.

RESULTS:

To date, 33 revision cochlear implant operations have been performed in 30 patients. Eight (24%) presented with a failure of the speech processor to lock with the internal device (i.e., hard failure). Twenty-five (76%) presented with either aversive auditory (n = 23 [92%]) or nonauditory (n = 21 [84%]) symptoms or performance-related issues (n = 16 [64%]) while maintaining a lock (i.e., suspected soft failure). Revision surgery resulted in resolution of the patient's presenting signs and symptoms in nearly 90% of cases and significant improvements in auditory performance. Perioperative complications were uncommon. Preoperative testing and device analysis frequently did not reveal the reason for presumed device malfunction.

CONCLUSION:

Revision cochlear implantation should be considered in patients significantly affected by intolerable auditory and/or nonauditory symptoms or when performance issues have been documented.

PMID:
15241229
[Indexed for MEDLINE]

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