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Delayed vertigo after stapes surgery
Roberto Albera1, Andrea Canale, Michelangelo Lacilla
1Department of Clinical Physio-pathology, II Chair of ENT, University of Turin, Turin, Italy. roberto.albera@unito.it
Objectives:
Stapes surgery restores partial or total hearing in almost 95% of cases, and in case of failure, revision surgery may often resolve the problem. Delayed vertigo is commonly related to perilymphatic fistula. The aim of this study is to report experience gained in revision stapes surgery in cases of delayed vertigo.
Study Design:
This is an intervention study, before-after trial; it includes follow-up between 12 and 84 months that was based on clinical history and audiometric evaluations.
Methods:
The work was carried out in the otologic surgery referral center of Piemonte in outpatient surgery. Nine patients (4 males and 5 females, between 43 and 60 years of age) who presented with delayed vertigo after stapes surgery were retrospectively reviewed. All nine underwent clinical history evaluation, pure tone audiogram, investigation of the vestibular system with a bithermal binaural caloric test, and fistula test. Vestibular tests were performed with electronystagmography recording. In all nine subjects, functional middle ear exploration was carried out by way of a transmeatal approach using local anesthesia. The demonstration of a perilymphatic leak was positive in only three (33%) cases, but the oval window region was filled with fibrin glue in all nine cases.
Results:
At follow-up, vertigo was resolved in all cases with revision surgery, even though perilymph leak was positive only in three cases.
Conclusion:
From the results obtained, we feel that exploration of the middle ear should be always carried out in cases of delayed vertigo after stapes surgery with suspected perilymphatic fistula.
