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  • Title: [Characteristics and significance of 1/2 octave frequency pure-tone audiometry on 82 patients with tinnitus].
    Author: Chen P, Su J, Cai H, Zheng M, Huang D.
    Journal: Lin Chuang Er Bi Yan Hou Ke Za Zhi; 2004 Oct; 18(10):593-5. PubMed ID: 15620135.
    Abstract:
    OBJECTIVE: To characterize the audiometric results of 1/2 octave frequency pure-tone audiometry in tinnitus patients with normal threshold on octave pure-tone audiometry and determine its clinical significance. METHOD: Eighty-two tinnitus patients (140 ears) with normal pure-tone threshold on octave audiometry were examined by using 1/2 octave frequency pure tone audiometry. Thirty normal subjects (60 ears) served as the control. RESULT: Fifty-two ears (37.14%) were mainly hearing loss in high frequency in the tinnitus patients, which closely coincides with the frequency of tinnitus. The hearing loss was slight in most of the tinnitus patients, and the intensity of tinnitus was not related to the degree of hearing loss. CONCLUSION: 1/2 octave frequency pure tone audiometry can offer the early and direct evidences of hearing loss for the tinnitus patients with normal threshold on octave pure tone audiometry, and it is of value for this method in detecting early cochlear lesions.
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