Aim: The aim of this study is to determine the factors that can affect the occurrence of noise-induced hearing loss (NIHL) and the relationship between the intensity of noise with increased blood pressure on employees who work at Begerpang Palm Oil Mill PT Perusahaan (BPOMPL) Perkebunan London Sumatra Indonesia Tbk.
Materials and methods: This was a cross-sectional study conducted from July to December 2013. The selected employee as the subject was 60 people. They first fill out the questionnaire and then get a clinical examination of ear nose and throat. Respondents were tested for blood pressure before and after working and also checked their hearing using a pure tone audiometer. Chi-square test was used, including the relationship of age, length of working, noise intensity, personal protective equipment to the occurrence of NIHL and the relationship between the intensity of noise with increased blood pressure. It is statistically significant if the p-value is <0.05.
Results: It was found a significant relationship between the working period (p = 0.001), noise intensity (p = 0.008), and the use of personal protective equipment hearing (p = 0.001) with NIHL occurrence. There was also a significant relationship between noise intensity with increasing systolic (p=0.001) and diastolic (p = 0.001) blood pressure.
Conclusion: This study proved a significant correlation between the working period, noise intensity and the use of personal protective equipment of hearing with NIHL occurrence and between noise intensity with increased systolic and diastolic blood pressure.
Clinical significance : NIHL diagnosis is an important step to prevent hearing loss and increased blood pressure in workers.
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