Evaluating combined effect of noise and heat on blood pressure changes among males in climatic chamber

Dehghan, Habibollah; Bastami, Mohamad Taghi; Mahaki, Behzad

doi:10.4103/jehp.jehp_107_15

Cited by 9 publications

(5 citation statements)

References 21 publications

(27 reference statements)

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“…In regards to occupational noise levels above 85 dB(A), the association between noise exposure and hypertension is inconsistent. Some researchers have showed that occupational noise exposure is associated with a higher risk of hypertension or with a sustained elevation of blood pressure 1,2,22,23 , which is consistent with our findings (Table 2). Still, other studies have not suggested any significant link 11,24,25 .…”

Section: Discussionsupporting

confidence: 93%

“…Exposure to occupational noise in relation to occupational injuries has become a legitimate public health issue in recent years. In addition to incurring adverse effects on the auditory system, noise, as a stressor and one of the most harmful agents for workers, may also cause elevated blood pressure, anxiety, angiocardiopathy, and impaired hormone secretion 1–4 . Many studies suggest that along with hearing difficulty, noise exposure has been especially associated with cardiovascular diseases such as arteriosclerosis, hypertension, and coronary heart disease 5–8 .…”

Section: Introductionmentioning

confidence: 99%

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The Influence of Occupational Noise Exposure on Cardiovascular and Hearing Conditions among Industrial Workers

Qin

Wang

et al. 2019

Sci Rep

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This study was conducted to estimate the current prevalence of hypertension, cardiovascular condition and hearing difficulty of workers exposure to occupational noise, and to analyze any associations between these abnormal signs and occupational noise exposure. The subjects included 5205 noise-exposed workers. Workers with high noise exposure were more likely to have a higher threshold value than low exposure ones ( P < 0.05). Subjects in the high exposure group had a significantly higher risk of hypertension and hearing loss than the ones in low exposure group. Between the ages of 30 and 45, high-level occupational noise exposure led to a significantly raising risk of both hypertension ( Adjusted OR = 1.59, 95% CI , 1.19–2.11) and hearing loss ( Adjusted OR = 1.28, 95% CI , 1.03–1.60) when comparing to low-level noise exposure. In male workers, the prevalence of hearing difficulty in high exposure group was approximately 1.2 times worse than in low group ( P = 0.006). In addition, exposure to high noise level demonstrated a significant association with hypertension and hearing loss when the duration time to occupational noise was longer than 10 years. Hypertension and hearing difficulty is more prevalent in the noise-exposed group (higher than 85 dB[A]). Steps to reduce workplace noise levels and to improve workplace-based health are thus urgently needed.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

The Influence of Occupational Noise Exposure on Cardiovascular and Hearing Conditions among Industrial Workers

Qin

Wang

et al. 2019

Sci Rep

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“…Another experimental study performed in a climatic chamber observed that the mean change of systolic blood pressure was different significantly before and after exposure to heat and noise levels including 75, 85, and 95 dB ( p = 0.015, p = 0.001, p > 0.001, p = 0.027, respectively). Although systolic and diastolic blood pressures changed drastically, it was not significantly different in simultaneous exposure to heat and noise [ 12 ]. Despite the odds of carotid plaque being higher in the combination group than either single group in our study, no significant multiplicative or additive interactions between the heat stress and noise were observed.…”

Section: Discussionmentioning

confidence: 99%

“…The effect of independent and combined physical hazardous agents on health is varied. Combined exposure to noise and heat has more of a detrimental effect on salivary cortisol and blood pressure as compared to independent exposure [ 11 ], while another study showed that subtle changes of blood pressure were traced when exposed to a combination of heat and noise [ 12 ]. Several underlying mechanisms have been shown to be likely involved in the development of these exposures to atherosclerosis: heat stress can increase the production of reactive oxygen species (ROS), induce apoptosis, and increase peripheral circulation and sweating, which could increase the plasma viscosity and serum cholesterol level, and promote the genesis and development of atherosclerosis [ 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Associations of Occupational Heat Stress and Noise Exposure with Carotid Atherosclerosis among Chinese Steelworkers: A Cross-Sectional Survey

Wang

Zhang

et al. 2021

IJERPH

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Occupational exposure to heat stress and noise at the workplace are widespread physical hazards and have been associated with an increase in both morbidity and mortality. This study aims to examine the association between occupational heat stress and noise exposure and carotid atherosclerosis in Chinese steelworkers. A total of 3471 subjects were included in this study. Carotid plaque was measured using ultrasonography. The occupational information was collected by face-to-face personal interviews and all of the reported information was verified with the company’s records. Workers were divided into non-exposure and exposure groups according to the company’s records regarding previous and/or current heat stress and noise exposure status in the workplace. The prevalence of carotid plaque was 30.1% in the study population and workers exposed to both occupational heat stress and noise had the highest prevalence of carotid plaque at 37.2%. The odds of carotid plaque in individuals of different exposure status were significantly elevated after adjustment for potential confounders, especially in the heat stress and noise exposure combination group: OR = 1.32, 95% CI: 1.06 to 1.65, in individuals who had experienced heat stress exposure; OR = 1.49, 95% CI: 1.18 to 1.88, in individuals who had experienced noise exposure; OR = 2.02, 95% CI: 1.60 to 2.56, in the combination group. No significant association in female workers and no significant multiplicative or additive interactions were found between occupational heat stress and noise exposure and carotid plaque. Exposure to occupational heat stress and noise are statistically associated with carotid atherosclerosis among male steelworkers.

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“…An exposure-response relationship between prevalence of hypertension and noise exposure as a persistent occupational and environmental problem was indicated in previous studies (Jarup et al, 2008;Rosenlund et al, 2001;Osadad, Yamamotoa, 2004). Exposure to high level of noise can cause increase in stress levels leading to adrenalin augmentation, increase in cortisol level, superficial vascular constriction, and as a result, raised blood pressure (Dehghan et al, 2017;Bigert et al, 2005;van Kempen et al, 2002).…”

Section: Introductionmentioning

confidence: 87%

Archives of Acoustics

Abbasi

Farhang-Dehghan

Yazdanirad

et al. 2019

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The present study aimed to determine the role of job components and individual parameters on the raised blood pressure among male workers of textile industry who were exposed to continuous high noise level. Information of all eligible subjects including demographic and individual characteristics, medical history and job characteristics were obtained by direct interview and referring to the medical records. All blood pressure measurements were done using mercury sphygmomanometer in the morning before work. The 8-hours equivalent A-weighted sound pressure level, the level of blood cholesterol and triglyceride, and noise annoyance was determined for each worker. As the result of weighted regression in path analysis (direct effect), only the work shift did not have a significant effect on blood pressure among the studied variables. It can be seen that variables including the level of triglyceride, cholesterol, and noise exposure have the most direct effects on blood pressure. The results of total effects showed that variables, including using the hearing protection device, age, work experience and visibility of sound source, did not have a significant effect on blood pressure. The results of this study indicate that occupational noise exposure alone and combined with other job components and individual parameters is associated with raised blood pressure. However, noise exposure was probably a stronger stressor for increased blood pressure.

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Evaluating combined effect of noise and heat on blood pressure changes among males in climatic chamber

Cited by 9 publications

References 21 publications

The Influence of Occupational Noise Exposure on Cardiovascular and Hearing Conditions among Industrial Workers

The Influence of Occupational Noise Exposure on Cardiovascular and Hearing Conditions among Industrial Workers

Associations of Occupational Heat Stress and Noise Exposure with Carotid Atherosclerosis among Chinese Steelworkers: A Cross-Sectional Survey

Archives of Acoustics

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