Prognosis of sudden low-tone loss other than acute low-tone sensorineural hearing loss

Authors: Fushiki, Hiroaki1; Junicho, Makiko1; Kanazawa, Yuuji1; Aso, Shin2; Watanabe, Yukio1

Source: Acta Oto-Laryngologica, Volume 130, Number 5, May 2010 , pp. 559-564(6)

Publisher: Informa Healthcare

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Abstract:

Conclusion: In clinical practice, sudden low-tone loss other than acute low-tone sensorineural hearing loss (ALHL) shows a potential for recurrence. Objective: ALHL is often associated with recurrence and/or progression to Ménière's disease. We examined the prognosis of patients with sudden low-tone loss who were not classified in the audiometric definition of ALHL. Methods: Sixty-three patients diagnosed at the university hospital with idiopathic sudden low-tone loss of sensorineural hearing loss and without subjective vertigo were followed up in the long term with a mean of over 4 years. The rates of recurrence and/or progression to Ménière's disease for patients with low-tone loss type other than ALHL (non-ALHL) were compared with those for ALHL patients. Results: The recovery rate at the initial treatment was 47.6% for non-ALHL and 62.9% for ALHL. A Kaplan–Meier plot indicated that cumulative recurrence rates for non-ALHL were 20.2% at 1 year and 43.5% at 5 years, whereas the rates for ALHL were 12.2% at 1 year and 31.3% at 5 years. There was no statistically significant difference between the two patient groups.

Keywords: Ménière's disease; electronystagmography; endolymphatic hydrops; idiopathic sudden sensorineural hearing loss; vestibular alteration

Document Type: Research Article

DOI: http://dx.doi.org/10.3109/00016480903311245

Affiliations: 1: 1Department of Otolaryngology, Head & Neck Surgery, University of Toyama 2: 2Ear Nose & Throat, Aso Clinic, Toyama, Japan

Publication date: May 1, 2010

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