Artikel
Otolithic function after cochlear implant surgery
Suche in Medline nach
Autoren
-
D. Basta
- Department of ENT at ukb, Berlin, Germany
-
I. Todt
- Department of ENT at ukb, Berlin, Germany
-
A. Ernst
- Department of ENT at ukb, Berlin, Germany
| Veröffentlicht: | 31. Mai 2005 |
|---|
Gliederung
Text
Introduction
The otolithic organs are neuroanatomically in close proximity to the cochlear implant electrode. They could be possibly influenced by the electrode insertion. I was therefore the aim of the present paper to investigate saccular and utricular function pre- and postoperatively in cochlear implanees.
Materials and Methods
Air- and bone conducted vestibular evoked myogenic potentials (VEMP´s) were recorded bilaterally and the subjective haptic vertical measured in 24 patients (16 female, 8 male) 2 days before and 6 weeks after cochlear implantation. The results were classified as pathological or normal by using normative data.
Results
Saccular function investigated by the presence of VEMP`s were estimated as normal in 66 % of the patients preoperatively and in 25 % after cochlea implant surgery. Preoperatively most VEMP´s could already be elicited by air conduction, but bone conducted stimuli were required in all patients postoperatively. Only 2 patients showed pathological results in the subjective haptic vertical recording (utricular function) after implant surgery.
Conclusions
The present data suggest that saccular impairment is correlated to a large extent with cochlea implant surgery. Our results indicate that the neuromonitoring technique in cochlear implant surgery should be modified.
