Abstract:
BACKGROUND:Noise induced hearing loss (NIHL) is within the top five occupational illnesses in Zimbabwe. Workers at a mining company complained about loss of hearing at the mine clinic. OBJECTIVE:To determine the prevalence of NIHL among employees at the Mine. METHODS:We conducted a descriptive cross sectional study at the mine. Workers were proportionally selected to represent all the mine departments or working areas. We measured noise levels at various mine sites, conducted a walk-through survey to observe noise related worker practices and conducted audiometric testing. RESULTS:Mean age for workers was 34.8±7.6 years and the mean duration of exposure to noise was 7.5±1.2 years. All workers could define noise. Ninety (53%) workers attributed NIHL to noisy work environment. Excessive noise levels were in Plant Processing (94 dBA), Underground Mining (102 dBA) and (Underground Workshop (103 dBA). Sixty two (36.7%) workers had NIHL. NIHL increased as a function of age (chi square=30.99 df=3 p<0.01) and was associated with work area (chi square=24.96 df=5 p<0.01). Observed workers took heed of noise warnings. There was no documented hearing conservation program at the mine. CONCLUSION:The prevalence of NIHL of 37% is high. Age and work area were associated with NIHL. Studies reported that age tends to distort the relationship between noise exposure and NIHL. Mine management should institute a hearing conservation program to protect employees against hazardous noise. Management may meanwhile use administrative controls and adhere to permissible exposure limits according to the noise regulations.
journal_name
Afr Health Scijournal_title
African health sciencesauthors
Chadambuka A,Mususa F,Muteti Sdoi
10.4314/ahs.v13i4.6subject
Has Abstractpub_date
2013-12-01 00:00:00pages
899-906issue
4eissn
1680-6905issn
1729-0503pii
jAFHS.v13.i4.pg899journal_volume
13pub_type
杂志文章abstract:Introduction:Autosomal Dominant Polycystic Kidney Disease (ADPKD) is presumably rare in Africa. Knowledge about the disease in Nigeria is limited as demonstrated by scanty articles on the subject. Objectives:To determine the pattern of clinical presentation and outcome of ADPKD among ADPKD patients. Method:ADPKD subj...
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更新日期:2010-06-01 00:00:00
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pub_type: 杂志文章
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更新日期:2008-12-01 00:00:00
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doi:
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更新日期:2013-06-01 00:00:00
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journal_title:African health sciences
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doi:
更新日期:2011-09-01 00:00:00
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更新日期:2015-12-01 00:00:00
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journal_title:African health sciences
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更新日期:2004-12-01 00:00:00
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journal_title:African health sciences
pub_type: 杂志文章
doi:10.4314/ahs.v14i3.17
更新日期:2014-09-01 00:00:00
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journal_title:African health sciences
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doi:
更新日期:2011-03-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2019-12-01 00:00:00