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Arquivos Internacionais de Otorrinolaringologia

versión On-line ISSN 1809-4856


LIBERMAN, Patricia Helena Pecora; GOFFI-GOMEZ, M. Valeria Schmidt; SCHULTZ, Christiane  y  LOPES, Luiz Fernando. What are the audiometric frequencies affected are the responsible for the hearing complaint in the hearing loss for ototoxicity after the oncological treatment?. Arquivos Int. Otorrinolaringol. [online]. 2012, vol.16, n.1, pp.26-31. ISSN 1809-4856.

INTRODUCTION: The neurosensory bilateral simetric hearing loss resulting of the oncological treatment is underestimated, because the patients has the hearing detection preserved, reporting complaints in determined situation, or the not comprehension of part of the message. OBJECTIVE: Investigate which are the audiometric frequencies affected are the responsible by the presence of hearing complaints. METHOD: Prospective study evaluating 200 patients with cancer in the childhood out of the oncological treatment in at least 8 years, with average age to the diagnosis of 6,21 years (4,71). Was applied anamnesis to investigate the presence of hearing complaints and performed a tonal threshold audiometry. To check the association between the complaint and the hearing loss, was applied the Exact test of Fisher, with one error a=5%, the patients were split into: normal hearing, hearing loss in 8kHz, loss in 6-8 kHz, loss in 4-8 kHz, loss in 2-8 kHz and loss in < 1-8 kHz. RESULTS: We found 125 patients with hearing loss, 10 presented hearing complaints. Between the patients with hearing loss, 16 presented loss only at 8kHz, and 1 with complaint; 22 with loss in 6-8 kHz, being 3 with complaint; 16 with loss in 4-8 kHz, from them 10 with complaint; 15 with loss 2-8 kHz, being 14 with complaint and 6 with loss in < 1-8 kHz all with complaints. There were a significant relationship between the loss and hearing complaint (p<0,001), when the frequency of 4 kHz was involved. CONCLUSION: The bigger the number of affected frequencies the bigger the occurrence of hearing complaint, most of all when the speech frequencies are involved, and the involvement of 4 kHz already determines the appearing of the complaints.

Palabras clave : bilateral hearing loss; neurosensory hearing loss; oncology; health impacts.

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