Hearing preservation results after cochlear implantation in short-term and long-term observation
Journal Title: Otolaryngologia Polska - Year 2013, Vol 67, Issue 3
Abstract
Objective: To estimate a residual hearing preservation in cochlear implant patients in short-, and long-term observation. Material and methods: A group of 40 subjects with preserved residual hearing were included to this study. In all of them cochlear implant was provided due to a neurosensonal hearing loss. In all subjects hearing was tested using traditional audiological test battery. Cochlear implant surgery was performed typically. After minimal retroauricular incision antromastoidectomy was performed, and then, tympanotomy posterior to get a good access to the tympanum and to identify the round window and the promontory. Cochlear implant electrode was inserted to the scala tympani by cochleostomy approach. In some patients ,,soft technique’’ of cochlear implant surgery was done. I these cases a surgeon specially focused on a very careful and precise surgical maneuvers specially during elaboration of the cochleostomy and insertion of the electrode into the scala tympani. Results: In investigated group of 40 cochlear implant patients generally a 5–10 dB worsening of hearing threshold was observed in the first 3–12 months following surgery, and 10–15 dB in long-term observation. In a group of patients with residual hearing in whom the straight electrode inserted into the cochlea in the first 12 months hearing threshold increased 10 dB, and in longer than 12 months observation 10–20 dB. Analogous analysis in patients with perimodiolar electrode inserted revealed respectively 10.0–12.5 dB and 2.5–12.5 dB. I traditional technique of cochlear implant surgery hearing worsening in short-term period was 10 dB while in long-term period 15–20 dB. In soft technique of cochlear implant surgery hearing worsening was for shortterm and long-term as follows: 5–10 dB and respectively 10–20 dB. Conclusions: Observation of post-surgery hearing preservation showed that hearing threshold after cochlear implant insertion is unstable and getting worse in both short-, and long-term observation. During long-term period the hearing worsening is slower than in the first 12 months of observation.
Authors and Affiliations
Olimpia Stanisławek-Sut, Krzysztof Morawski, Kazimierz Niemczyk
Keywords
Related Articles
- EP ID EP52172
- DOI -
- Views 104
- Downloads 0
Czy zakładanie drenu wentylacyjnego u dzieci chorych na wysiękowe zapalenie ucha środkowego jest konieczne?
Cel: Porównanie wyników badań audiologicznych u chorych na wysiękowe zapalenie ucha środkowego (WZUŚ) po adenoidektomii z założeniem drenu wentylacyjnego (ang. ventilation tube insertion, VTI) oraz po adenoidektomii z sa...
Jakość życia i słyszenia u osób po 60. roku życia po operacji wszczepienia implantu ślimakowego
Cel badania. Wieloośrodkowa ocena jakości życia i jakości słyszenia u pacjentów po 60. roku życia po operacji wszczepienia implantu ślimakowego Nucleus®. Materiał i metody. Badaniami objęto zaimplantowanych chorych powyż...
Anomalie anatomiczne tętnic doczaszkowych u chorych z zawrotami głowy i zaburzeniami słuchu
Introduction: The aim of this work was the analysis of the frequency and type of anatomical anomalies of the arteries to the cranium such as vertebral arteries and carotid arteries in patients with vertigo and hearing di...
Middle ear cancer hidden by chronic otitis media – a case report
The authors would like to present a rare case of the middle ear cancer which has been developed in postoperative cave in 67 years old patient operated for cholesteatoma 50 years earlier. The patient was admitted to the E...
A new approach to studying the nasal and oral breathing routes
Introduction: Nasal obstruction is often reported by patients. It is a consequence of a subjective feeling of impaired airflow through the nasal cavity. Currently, objective measures of nasal patency rates are very limit...