Artikel
Hearing results for stapedotomies with skeeter and perforator in primary otosclerosis
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Autoren
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Ferdinand Bischof
- AMEOS Klinikum St. Salvator Halberstadt, HNO-Klinik, Halberstadt, Germany
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Jörg Langer
- AMEOS Klinikum St. Salvator Halberstadt, HNO-Klinik, Halberstadt, Germany
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Klaus Begall
- AMEOS Klinikum St. Salvator Halberstadt, HNO-Klinik, Halberstadt, Germany
| Veröffentlicht: | 3. August 2011 |
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Gliederung
Text
Introduction: Stapedotomy by stapes footplate perforation and insertion of titan prostheses is a difficult otosurgical intervention, whose success is mainly influenced by the surgeon’s experience, the perforation devices and the type of prostheses. The aim of this retrospective study was to compare the postoperative hearing results after stapedotomy with skeeter or perforator devices.
Materials/methods: The Pure Tone Audiogram (PTA) hearing Levels (dB SPL) at frequencies 0.5 kHz, 1 kHz, 2 kHz, and 4 kHz (PTA-4) of all patients, which underwent primary stapedotomies in the year 2007 and 2008, were studied preoperatively and 5 days/ 2 months/ 6 months postoperatively. Overall 86 stapdotomies were evaluated of which 51 were performed by skeeter and 35 by perforator. In order to measure the postoperative outcome the mean air-bone-gaps (PTA-4) of the study groups “skeeter” and “perforator” were calculated and, subsequently, differences between the groups statistically evaluated.
Results and conclusion: The mean improvement of the ABG was 21 dB (skeeter) and 18 dB (perforator), respectively. In both groups a transient impairment of the bone conduction hearing levels of 2 dB (skeeter) and 5 dB (perforator) appeared. However, neither the ABG nor the air or bone conduction levels were significantly different between the two groups. Therefore we conclude that both devices for stapedotomy are equivalently and, hence, that the device decision according to given intraoperative conditions should be left to the surgeon.
