BACKGROUND: Audiometric evaluation in extended high frequencies. AIM: To evaluate the hearing of adults exposed to occupational noise in conventional and ultra-high frequencies. METHOD: Evaluation of 30 adults exposed to noise and 30 adults who are not exposed (control group). Audiometer SD-50/Siemens, phones HDA200 and warble tone. RESULTS: With the increase in frequency, age and time of noise exposure there was a higher decrease in the hearing thresholds for the group of individuals exposed to noise. A higher incidence of hearing loss at 6 kHz and 14 kHz was observed. CONCLUSION: The present research demonstrated that the audiometric evaluation in extended high frequencies contributes to the early diagnosis of cortipathies, since these thresholds are affected before the conventional frequencies.
BACKGROUND: Audiometric evaluation in extended high frequencies. AIM: To evaluate the hearing of adults exposed to occupational noise in conventional and ultra-high frequencies. METHOD: Evaluation of 30 adults exposed to noise and 30 adults who are not exposed (control group). Audiometer SD-50/Siemens, phones HDA200 and warble tone. RESULTS: With the increase in frequency, age and time of noise exposure there was a higher decrease in the hearing thresholds for the group of individuals exposed to noise. A higher incidence of hearing loss at 6 kHz and 14 kHz was observed. CONCLUSION: The present research demonstrated that the audiometric evaluation in extended high frequencies contributes to the early diagnosis of cortipathies, since these thresholds are affected before the conventional frequencies.
Authors: Wenjia Wei; Stefanie Heinze; Doris G Gerstner; Sandra M Walser; Dorothee Twardella; Christina Reiter; Veronika Weilnhammer; Carmelo Perez-Alvarez; Thomas Steffens; Caroline E W Herr Journal: Noise Health Date: 2017 Nov-Dec Impact factor: 0.867