|Andrzej Kozok, Jurek Olszewski, Piotr Pietkiewicz|
Introduction. Various criteria are used in the evaluation of the functional results of surgical treatment of otosclerosis.
Aim. The aim of the study was to assess late effects of surgical treatment of otosclerosis depending on the method of hearing improvement evaluation.
Materials and methods. One hundred fifteen patients with otosclerosis (including 82 women and 33 men) ages from 17-70 were subjected to follow-up examinations after stapedotomy. The examinations comprised a prospective (late) assessment (performed minimum one year after surgery) including: pure-tone audiometry (evaluation of the average percentage of hearing loss according to CPT in % and the average hearing loss at the frequencies 0,5, 1, 2 and 3 kHz in decibels; and speech audiometry (the determination of the Speech Recognition Threshold - SRT, that is voice level in decibels at which the examined patient repeats 50% words of the text).
Results. Among the otosclerotic patients 71.3% were women and 28.7% were men. Before the surgery, CPT was usually higher than 50%, while during the follow-up examination it was within the 0-15% range; the corresponding values for mean hearing threshold were above 40 dB before the surgery and 11-25dB afterwards. The Speech Recognition Threshold (SRT) was usually 61-80 dB before the surgery and 20-40 dB during the follow-up examination.
Conclusions. Hearing improvement after stapedotomy is comparable, independing of the employed method. Speech recognition threshold constitutes a true measure of hearing efficiency.
keywords: otoskleroza, wyniki leczenia chirurgicznego, otosclerosis, results of surgical treatment
pages: from 195 to 198
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