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Factors affecting hearing results after stapes surgery

Published online by Cambridge University Press:  29 June 2007

Hiromi Ueda ,
Takashi Miyazawa ,
Kiyomitsu Asahi  and
Noriyuki Yanagita
Hiromi Ueda*
Affiliation:
Department of Otorhinolaryngology, Nagoya University School of Medicine, Nagoya, Japan.
Takashi Miyazawa
Affiliation:
Department of Otorhinolaryngology, Nagoya University School of Medicine, Nagoya, Japan.
Kiyomitsu Asahi
Affiliation:
Department of Otorhinolaryngology, Nagoya University School of Medicine, Nagoya, Japan.
Noriyuki Yanagita
Affiliation:
Department of Otorhinolaryngology, Nagoya University School of Medicine, Nagoya, Japan.
*
Address for correspondence: Hiromi Ueda, M.D., Department of Otorhinolaryngology, Nagoya University School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550Japan. fax: 00-81-52-744-2325 e-mail: [email protected]
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Abstract

Factors affecting auditory improvement after stapes surgery were investigated retrospectively on a study group of 106 otosclerotic ears (86 subjects). While the closure of the air-bone (A-B) gap after surgery was good at 2 kHz and 4 kHz, it was poor at 8 kHz and at frequencies lower than 1 kHz. Under 1 kHz, the lower the frequency, the worse the A-B gap after surgery. Stapedotomy and partial stapedectomy showed better post-operative hearing gain at 4 kHz than total stapedectomy. Total stapedectomy scored significantly better at 250 Hz and 500 Hz than stapedotomy. There was a close relationship between the pre-operative and post-operative A-B gap at frequencies under 1 kHz. The smaller the pre-operative A-B gap, the better the closure of the post-operative A-B gap at frequencies under 1 kHz. The smaller the pre-operative A-B gap, the better the closure of the post-operative A-B gap at these frequencies. It was speculated that otosclerotic ears with a larger pre-operative airbone gap might have another lesion in the middle ear other than the oval window.

Keywords

OtosclerosisStapes surgeryHearing loss, conductive
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 113 , Issue 5 , May 1999 , pp. 417 - 421
Copyright
Copyright © JLO (1984) Limited 1999

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