Hipertensão arterial entre trabalhadores de petróleo expostos a ruído

Souza, Norma Suely Souto; Carvalho, Fernando Martins

doi:10.1590/s0102-311x2001000600032

Cited by 6 publications

(1 citation statement)

References 11 publications

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“…1 One of the most relevant effects of exposure to noise is hearing loss, but it may also infl uence several other health disorders, such as: arterial hypertension, occupational accidents, acute stress, inner ear injuries, among others. 2,5,13,19,22 Thus, concern and efforts to eliminate or control this agent are increasing. 1 Government regulation 3.214, promulgated by the Ministry of Labor in Brazil on the 8th of June, 1978, established that medical examinations were required both upon admission to and dismissal from a job whenever the environment at the workplace presented levels of noise that were higher than 85 dB(A) during 8 hours of daily exposure.…”

Section: Introductionmentioning

confidence: 99%

Nível de ruído no ambiente de trabalho do professor de educação física em aulas de ciclismo indoor

et al. 2009

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OBJECTIVE:To analyze identify the level of noise at the workplace environment among Physical Education teachers during indoor bike classes and its association with some aspects of health. METHODS:Cross-sectional study carried out in 15 different gyms with 15 teachers in Rio de Janeiro (Southeastern Brazil) in 2007. A standardized questionnaire, tested in relation to its replication, was used in order to fi nd out the characteristics of the process and the way this job is organized, as well as complaints related to health reported by these teachers. The SRQ-20 (SelfReport Questionnaire) was utilized in order to verify the existence of minor psychiatric disturbances. The levels of sound pressure were measured by a portable appliance. The level of pressure was verifi ed in dB(A) at equivalent energy levels (Leq) in different places of the room at different moments during the class. ANOVA, chi-square and Pearson's correlation analyses were performed. RESULTS:The levels of sound pressure varied from 74.4 dB(A) to 101.6 dB(A). The results during the class were: a) warm-up (mean=88.45 dB(A)); b) main part (mean= 95.86 dB(A)); and, closure (mean= 85.12 dB(A)). The mean background noise was 66.89 dB(A)). There were signifi cant differences (p<0.001) among the background noise levels within different moments of the class. The noise was not related to minor psychiatric disturbances. CONCLUSIONS:Physical education professionals working with indoor bike classes are under high levels of sound pressure during their classes. This physical agent has been related to several health problems and should therefore be more controlled.

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Section: Introductionmentioning

confidence: 99%

Nível de ruído no ambiente de trabalho do professor de educação física em aulas de ciclismo indoor

et al. 2009

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Characterization of Hearing Thresholds from 500 to 16,000 Hz in Dentists: A Comparative Study

Gonçalves

Santos

Lobato

et al. 2014

Int. Arch. Otorhinolaryngol.

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Introduction High-level noise exposure in dentists' workplaces may cause damages to the auditory systems. High-frequency audiometry is an important tool in the investigation in the early diagnosis of hearing loss. Objectives To analyze the auditory thresholds at frequencies from 500 to 16,000 Hz of dentists in the city of Curitiba. Methods This historic cohort study retrospectively tested hearing thresholds from 500 to 16,000 Hz with a group of dentists from Curitiba, in the state of Paraná, Brazil. Eighty subjects participated in the study, separated into a dentist group and a control group, with the same age range and gender across groups but with no history of occupational exposure to high levels of sound pressure in the control group. Subjects were tested with conventional audiometry and high-frequency audiometry and answered a questionnaire about exposure to noise. Results Results showed that 81% of dentists did not receive any information regarding noise at university; 6 (15%) dentists had sensorineural hearing impairment; significant differences were observed between the groups only at frequencies of 500 Hz and 1,000, 6,000 and 8,000 Hz in the right ear. There was no significant difference between the groups after analysis of mean hearing thresholds of high frequencies with the average hearing thresholds in conventional frequencies; subjects who had been working as dentists for longer than 10 years had worse tonal hearing thresholds at high frequencies. Conclusions In this study, we observed that dentists are at risk for the development of sensorineural hearing loss especially after 10 years of service.

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Noise exposure and hypertension: investigation of a silent relationship

2015

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BackgroundNoise is an important occupational hazard worldwide and hypertension a well-known risk factor for cardiovascular disease, which is currently the greatest cause of disability retirement worldwide. The association between noise exposure and auditory effects is well documented in the biomedical literature, but the same is not true about exposure to different levels of noise and extra-auditory effects. It has been shown that noise exposure levels to be considered for non-auditory effects may not be the same as in the case of auditory effects. The frequent presence of noise in workplace environments, the high prevalence of hypertension worldwide, the biological plausibility of the association between noise exposure and high blood pressure and the need for more studies investigating the non-auditory effects of exposures to less than 85 dB(A), were the reasons that led us to develop this study. We aimed at investigating the hypothesis that exposure to different levels of noise is associated with hypertension.MethodsWe used a cross-sectional design to study the association between occupational noise exposure (≤75, 75–85, and ≥ 85 dB(A)) and hypertension (use of anti-hypertensive medication and/or blood pressure of ≥140/90 mmHg) in 1,729 petrochemical workers at Rio de Janeiro, Brazil. Data were collected from obligatory annual health evaluation records and from environmental measurements of noise and heat levels. We used logistical regression analysis to study the association while controlling for key confounding variables, such as smoking and body mass index.ResultsUsing the ≤75 dB(A) as reference category, noise exposure was independently associated to hypertension both at the 75–85 dB(A) (OR 1.56; 95% CI 1.13–2.17) and the ≥85 dB(A) levels (OR 1.58; 95% CI 1.10–2.26). Age, gender and body mass index were also independently associated to high blood pressure.ConclusionHerein, we were able to demonstrate that noise exposure is independently associated to hypertension. Our results are consistent with other studies that used similar methodology and enabled us to verify the occurrence of non-auditory effects in workers exposed to noise levels considered safe for auditory effects.

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Hipertensão arterial entre trabalhadores de petróleo expostos a ruído

Cited by 6 publications

References 11 publications

Nível de ruído no ambiente de trabalho do professor de educação física em aulas de ciclismo indoor

Nível de ruído no ambiente de trabalho do professor de educação física em aulas de ciclismo indoor

Characterization of Hearing Thresholds from 500 to 16,000 Hz in Dentists: A Comparative Study

Noise exposure and hypertension: investigation of a silent relationship

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