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  • Title: Otosclerosis among patients with dizziness.
    Author: Eza-Nuñez P, Manrique-Rodriguez M, Perez-Fernandez N.
    Journal: Rev Laryngol Otol Rhinol (Bord); 2010; 131(3):199-206. PubMed ID: 21488576.
    Abstract:
    OBJECTIVE: The objective of this study was to identify patients with otosclerosis and to characterize its clinical presentation among patients examined at our hospital with vertigo as the primary and most distressing symptom. STUDY DESIGN: Retrospective chart review. SETTING: Tertiary medical center. PATIENTS: This study involved 40 patients suffering from dizziness and diagnosed with otosclerosis. METHODS: At inclusion, the clinical status, as well as auditory (pure tone hearing level and speech audiometry, impedancemetry) and vestibular function (bedside, nystagmography, caloric test and rotator chair testing) were assessed. The results were analyzed using parametric and non-parametric tests, and the chi2 test. RESULTS: The clinical presentation was diverse: 12 patients with Menière's syndrome (30%); 11 patients with spontaneous recurrent vertigo without hearing fluctuation (27.5%); 13 patients with positional vertigo (32.5%); 3 patients with chronic unrelapsing imbalance (7.5%); and 1 patient with acute unilateral vestibulopathy (2.5%). There was a lag between the detection of hearing loss and the beginning of vertigo attacks or imbalance in all patients. When measured through bone conduction, hearing loss was significantly different in patients with Menière's disease, spontaneous recurrent vertigo and positional vertigo. CONCLUSIONS: Dizziness, although frequent in patients with otosclerosis is rarely a cause for specific clinical assessment. There is a lag between the patient's perception of hearing loss and the initiation of vestibular symptoms, and it is not associated with any specific clinical disorder Otosclerosis can be found as any one of the most common vestibular disorders and in general, vestibular function tests reveal a more severe vestibular dysfunction than in the idiopathic forms. LEVEL OF EVIDENCE: 2A.
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