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ISRN Otolaryngology
Volume 2013 (2013), Article ID 205714, 7 pages
http://dx.doi.org/10.1155/2013/205714
Clinical Study

Correlation of Tinnitus Loudness and Onset Duration with Audiological Profile Indicating Variation in Prognosis

1Department of Otolaryngology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
2Speech and Hearing Unit, Department of Otolaryngology, PGIMER, Chandigarh 160012, India

Received 4 June 2013; Accepted 22 July 2013

Academic Editors: T. Just, T. S. Karhuketo, and C.-H. Wang

Copyright © 2013 Sunita Gudwani et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose. Subjective tinnitus has different forms and degrees of severity. Many studies in the literature have assessed psychoacoustic characteristics of tinnitus but hardly any of them had focused on the association of audiological profile with onset duration and loudness perception. The aim of this study was to evaluate existence of any association between tinnitus loudness/onset duration and audiological profile to explain differences in prognosis. Method. Study design was prospective. The sample consisted of 26 subjects having tinnitus, which was divided into tinnitus and nontinnitus ears. Audiological profile included pure-tone audiometry, speech audiometry, tympanometry, acoustic reflex test, and auditory evoked potentials (early and middle latency). Unpaired t-test was applied to compare two subgroups. Correlation and association between tinnitus onset duration/loudness perception and audiological profile were also assessed by calculating Spearman’s coefficient and Fischer exact value. Results. The two subgroups had significant differences for pure-tone and speech audiometry hearing thresholds. A significant association was observed between the high frequency/extended high frequency and tinnitus loudness/onset duration. Conclusion. The changes in hearing thresholds and auditory pathway are associated with an increase in tinnitus loudness and its onset duration. This knowledge would be helpful to differentiate between severity and chronicity of the patients for planning therapeutic management and predicting prognosis.