Clinical and audiological characteristics of 1000Hz audiometric notch patients.
Am J Otolaryngol
; 38(5): 521-525, 2017.
Article
em En
| MEDLINE
| ID: mdl-28532971
ABSTRACT
PURPOSE:
Among the hearing loss patients, we can confirm that the hearing loss of the specific frequency decreases, such as the 2000Hz notch in otosclerosis and the 4000Hz notch (c5-dip) in noise-induced hearing loss. The 1000Hz notch (c3-dip), however, is rarely studied. We fortuitously encountered a group of patients with a 1kHz hearing loss and report it with a review of the literature.METHODS:
Otological history, audiogram, diagnosis, occupation, and history of noise exposure were reviewed from charts and telephone interview, and compared between c3-dip and c5-dip patients (n=98).RESULTS:
Thirty-one patients (mean age 46.2years) demonstrated 1kHz hearing loss; these included 11 males. The pure-tone threshold was 37.97dB at 1kHz and the average threshold was 22.38dB at other frequencies. In the c3-dip group, tinnitus was the most common complaint, while sudden sensorineural hearing loss and idiopathic tinnitus (n=8 each) were the most common diagnoses. Female patients and unilateral cases were more common in the c3-dip than in the c5-dip group, and ear fullness was more common in the c3-dip group than in the c5-dip group. The duration of occupation-related noise exposure was longer in the c5 group, and head or ear trauma was more frequent in the c3-dip group.CONCLUSION:
We have defined a new clinical entity of 1kHz hearing loss in patients, defined as the c3-dip, which was clinically and audiologically distinct from the c5-dip. Further study is needed to clarify this new entity of hearing loss.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Perda Auditiva Súbita
/
Perda Auditiva Neurossensorial
Tipo de estudo:
Etiology_studies
/
Observational_studies
Limite:
Adult
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Am J Otolaryngol
Ano de publicação:
2017
Tipo de documento:
Article