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Hearing function of gold miners with and without a history of tuberculosis treatment: a retrospective data review / Função auditiva de garimpeiros com e sem história de tratamento de tuberculose: uma revisão retrospectiva dos dados
Khoza-Shangase, Katijah.
  • Khoza-Shangase, Katijah; University of the Witwatersrand. School of Human and Community Development. Department of Speech Pathology and Audiology. Johannesburg. ZA
Braz. j. otorhinolaryngol. (Impr.) ; 86(3): 294-299, May-June 2020. tab, graf
Article in English | LILACS | ID: biblio-1132593
ABSTRACT
Abstract

Introduction:

South Africa has a high prevalence of co-existing tuberculosis and HIV. As ototoxicity linked to the treatments for these conditions occurs with concomitant exposure to other ear toxins such as hazardous noise exposure, it is important to investigate the combination impact of these toxins. Limited published evidence exists on the co-occurrence of these conditions within this population.

Objectives:

The objective of this study was to compare the hearing function of gold miners with (treatment group) and without (non-treatment group) the history of tuberculosis treatment, in order to determine which group had increased risk of noise induced hearing loss. Furthermore, possible influence of age and HIV in these two groups was examined.

Methods:

A retrospective record review of 102 miners' audiological records, divided into two groups, was conducted, with data analyzed both qualitatively and quantitatively.

Results:

Findings suggest that gold miners with a history of tuberculosis treatment have worse hearing thresholds in the high frequencies when compared to those without this history; with evidence of a noise induced hearing loss notch at 6000 Hz in both groups. Pearson's correlations showed values between 0 and 0.3 (0 and −0.3) which are indicative of a weak positive (negative) correlation between HIV and hearing loss, as well as between hearing loss and age in this population.

Conclusions:

Current findings highlight the importance of strategic hearing conservation programs, including ototoxicity monitoring, and the possible use of oto-protective/chemo-protective agents in this population.
RESUMO
Resumo

Introdução:

A África do Sul apresenta uma alta prevalência de coinfecção de tuberculose e HIV. Como a ototoxicidade associada aos tratamentos para essas condições é observada na exposição concomitante a outros agentes ototóxicos, como a exposição a ruídos perigosos, é importante investigar o impacto da combinação desses agentes. São poucas as evidências publicadas sobre a co-ocorrência dessas condições nessa população.

Objetivo:

Comparar a função auditiva de garimpeiros com (grupo tratamento) e sem (grupo sem tratamento) história de tratamento de tuberculose, a fim de determinar que grupo apresentava maior risco de perda auditiva induzida por ruído. Além disso, avaliou-se a possível influência da idade e do HIV nesses dois grupos.

Método:

Os registros audiológicos de 102 garimpeiros, divididos em dois grupos, foram revisados de forma retrospectiva; os dados foram qualitativa e quantitativamente analisados.

Resultados:

Os achados indicam os garimpeiros com histórico de tratamento de tuberculose apresentam piores limiares auditivos nas altas frequências quando comparados àqueles sem esse histórico; em ambos os grupos, observou-se perda auditiva induzida por ruído com entalhe audiométrico a 6.000 Hz. As correlações de Pearson mostraram valores entre 0 e 0,3 (0 e -0,3), que são indicativos de uma fraca correlação positiva (negativa) entre o HIV e a perda auditiva, bem como entre a perda auditiva e a idade nessa população.

Conclusões:

Os resultados atuais destacam a importância de programas estratégicos de conservação auditiva, inclusive monitoramento de ototoxicidade, e o possível uso de agentes oto-/quimioprotetores nessa população.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Tuberculosis / Occupational Exposure / Gold / Hearing Loss, Noise-Induced / Mining / Noise, Occupational / Occupational Diseases Type of study: Diagnostic study / Etiology study / Observational study / Prevalence study / Risk factors Limits: Adolescent / Adult / Humans Country/Region as subject: Africa Language: English Journal: Braz. j. otorhinolaryngol. (Impr.) Journal subject: Otolaryngology Year: 2020 Type: Article Affiliation country: South Africa Institution/Affiliation country: University of the Witwatersrand/ZA

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Full text: Available Index: LILACS (Americas) Main subject: Tuberculosis / Occupational Exposure / Gold / Hearing Loss, Noise-Induced / Mining / Noise, Occupational / Occupational Diseases Type of study: Diagnostic study / Etiology study / Observational study / Prevalence study / Risk factors Limits: Adolescent / Adult / Humans Country/Region as subject: Africa Language: English Journal: Braz. j. otorhinolaryngol. (Impr.) Journal subject: Otolaryngology Year: 2020 Type: Article Affiliation country: South Africa Institution/Affiliation country: University of the Witwatersrand/ZA