Authors: Milan D Stankovic
Publish Date: 2008/08/14
Volume: 266, Issue: 5, Pages: 635-640
Abstract
Between January 1990 and December 2003 117 patients were surgically treated for tympanosclerosis at a tertiary referral center The objective of our study was to review the hearing results in this cohort The patients were divided into three groups predominant involvement of tympanic membrane 33 cases predominant fixation of malleus or/and incus 72 cases and stapedial fixation 12 cases Preoperative and postoperative air–bone gap ABG and pure tone average PTA were compared after shortterm and longterm followup and statistical significance was determined After surgery air–bone gap was improved by 117 dB after shortterm and by 109 dB after longterm observation period The improvement of ABG was not significantly different between the groups Pure tone average PTA was improved by 152 dB in shortterm period with decrease of results in the longterm followup to 103 dB Successful hearing result as judged by ABG was obtained in 667 with affected tympanic membrane in 653 with malleus or/and incus fixation and in 500 with stapedial fixation Statistical analysis confirmed significant improvement of hearing for all groups Highly significant difference was noted for low frequency ABG 05 1 and 2 kHz Hearing improvement on ABG was preserved after longterm observation No significant sensorineural hearing loss was seen in this series Surgery for tympanosclerosis results in significant improvement of ABG and PTA Most of the improvement is obtained in lower frequencies Longterm results are comparable to shortterm results with slight hearing deterioration in stapedial fixation
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