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Transtympanic gentamicin treatment using Silverstein MicroWick in Ménière's disease patients: long term outcome.

Suryanarayanan R, Srinivasan VR, O'Sullivan G

Department of Otolaryngology, Arrowe Park Hospital, Wirral, Merseyside, UK.

Objective:To assess the long term outcome of gentamicin inner-ear perfusion using the Silverstein MicroWicktrade mark in the treatment of Ménière's disease.Study design:Retrospective questionnaire survey of patients and review of medical records.Setting:A district general hospital.Participants:All 15 patients who completed a minimum follow up of at least 24 months were included.Main outcome measures:Subjective symptoms, change in hearing thresholds and Glasgow benefit inventory scores.Results:Based on the American Association of Otolaryngology-Head and Neck Surgery (1995) guidelines for reporting, 80 per cent of respondents obtained class A vertigo control and 20 per cent obtained class B control. Respondents' functional level improved from pre-operative levels of between three and six to post-operative levels of between one and three. Three respondents had pre-operative 'dead ears' and one developed the condition post-operatively. Hearing deteriorated further in three respondents, improved in two and remained unchanged in the rest. Respondents with class A control demonstrated improved quality of life, with a mean Glasgow benefit inventory total score of +34.Conclusion:Transtympanic gentamicin therapy via the Silverstein MicroWick results in good vertigo control. Patients should however be made fully aware of the risk of hearing deterioration.

Published 5 June 2008 in J Laryngol Otol.
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