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Anales de Otorrinolaringología Mexicana

2008, Number 1

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Otorrinolaringología 2008; 53 (1)

Review stapedectomy: experience at Instituto Nacional de Enfermedades Respiratorias

Soda MA, Tona AG

Language: Spanish
References: 32
Page: 29-34
PDF size: 216.98 Kb.


ABSTRACT

Background
Stapedectomy, as is currently known, is effective in correcting otoesclerosis by conductive hearing loss. Over 90% of patients achieved an improvement hearing that leaves a residual gap of less than 10 dB. Some cases require revision surgery, which represents a major challenge for obtaining satisfactory audiologic results and avoiding complications.
Objective
To analyze audiologic findings and results obtained after revision surgery for stapedectomy in order to compare them with those of other series reported.
Patients and methods
A retrospective and descriptive study was performed from 1991 to 2004, including 35 cases with revision surgery at Instituto Nacional de Enfermedades Respiratorias (INE R). Among them, 17 patients (48.5%) were initially operated at INER and 18 (51.5%) at other hospitals.
Results
The main failure causes were a displaced prosthesis in 37.4% and incus necrosis in 20%. In 73.4% of the cases an air bone gap closure to within 20 dB was achieved and in 37.1% to within 10 dB.
Conclusions
These results are similar to those found in other series about main causes of audiologic failure after review stapedectomy. Revision stapedectomy has less chance of audiologic success and more chances of complications; however in selected cases it can be beneficial.


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