Lung function and functional capacity among foundry workers using effective risk control measures

Bernardes, Rosane Andrea Bretas; Chiavegato, Luciana Dias; Moraes, Mônica Vasconcelos de; Negreiros, Alexandher; Padula, Rosimeire Simprini

doi:10.3233/wor-152124

Cited by 6 publications

(3 citation statements)

References 19 publications

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“…Pulmonary function at rest was normal in both groups; nonetheless, CPET was able to identify discrete but significant changes in the breathing pattern during exercise. Discrepant results were reported by Bernardes et al ( 33 ). Those authors found no difference in exposed and non-exposed lung function as measured by spirometry and functional capacity by the 6-minute walk test.…”

Section: Discussionmentioning

confidence: 63%

Use of cardiopulmonary exercise testing to assess early ventilatory changes related to occupational particulate matter

Chao

Sperandio

Ostolin

et al. 2018

Braz J Med Biol Res

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Spirometry has been used as the main strategy for assessing ventilatory changes related to occupational exposure to particulate matter (OEPM). However, in some cases, as one of its limitations, it may not be sensitive enough to show abnormalities before extensive damage, as seen in restrictive lung diseases. Therefore, we hypothesized that cardiopulmonary exercise testing (CPET) may be better than spirometry to detect early ventilatory impairment caused by OEPM. We selected 135 male workers with at least one year of exposure. After collection of self-reported socioeconomic status, educational level, and cardiovascular risk data, participants underwent spirometry, CPET, body composition assessment (bioelectrical impedance), and triaxial accelerometry (for level of physical activity in daily life). CPET was performed using a ramp protocol on a treadmill. Metabolic, cardiovascular, ventilatory, and submaximal relationships were measured. We compared 52 exposed to 83 non-exposed workers. Multiple linear regressions were developed using spirometry and CPET variables as outcomes and OEPM as the main predictor, and adjusted by the main covariates. Our results showed that OEPM was associated with significant reductions in peak minute ventilation, peak tidal volume, and breathing reserve index. Exposed participants presented shallower slope of ΔVT/ΔlnV̇E (breathing pattern), i.e., increased tachypneic breathing pattern. The OEPM explained 7.4% of the ΔVT/ΔlnV̇E variability. We found no significant influence of spirometric indices after multiple linear regressions. We conclude that CPET might be a more sensitive feature of assessing early pulmonary impairment related to OEPM. Our cross-sectional results suggested that CPET is a promising tool for the screening of asymptomatic male workers.

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Section: Discussionmentioning

confidence: 63%

Use of cardiopulmonary exercise testing to assess early ventilatory changes related to occupational particulate matter

Chao

Sperandio

Ostolin

et al. 2018

Braz J Med Biol Res

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“…This is a cross-sectional study of 103 healthy males aged 18–55, employed in general services, maintenance, operations, and industry, recruited from two universities and a foundry between February and September 2014. 20 , 21 …”

Section: Methodsmentioning

confidence: 99%

Predictive validity analysis of six reference equations for the 6-minute walk test in healthy Brazilian men: a cross-sectional study

Negreiros

Padula

Bernardes

et al. 2017

Brazilian Journal of Physical Therapy

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“…However, cough, wheezing, and difficult breathing were only affected greater in the intervention group than the control group at Baseline to Follow-Up 2. Intervention also effectively reduced, after work, the prevalence of eye and facial symptoms (facial burning, gas exchange disorders Bernardes et al (2015). found lung function test did not difference groups depend on age, time exposure and measure of working control health hazard.…”

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confidence: 86%

An intervention of Safety chemical program to reduce occupational exposure and improve health among BMA Vector Control Operators

Ngammuk

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Objective: 1) To assess the current occupational chemicals exposure and the relationship of the between workers' health condition and their exposure from spraying chemicals among Vector Control Operators (VCOs) in Bangkok, Thailand: 2) to determine the effectiveness of a chemical safety intervention program designed to increase chemical behavior safety score, reduce occupational chemical exposure, health symptoms prevalence, and spirometric lung function impairment. Methods: A quasi-experimental study was conducted in six Bangkok areas among 96 male operators with two follow-ups time by measured every six months. The operators were divided into two groups: the intervention group received intervention, and the control did not. General information of participants including personal behavior, environmental working condition and health symptoms were collected through face to face by using valid questionnaires. Exposure to cypermethrin, benzene and toluene were collected by using personal solid sorbent sampling during the time of chemical spraying by NIOSH method. Urine samples were collected to evaluate biological exposure as pollutant metabolite levels. The data were analyzed by using descriptive statistics and multiple logistic regressions for test association. Overall intervention effects were assessed by repeated-measure analysis of variance (ANOVA). Linear mixed models (continuous outcomes), and generalized linear models with generalized estimating equations (GEE) (dichotomous outcomes) were used to measure and assess intervention effects at specific follow-up times (follow-up 1 and follow-up 2). Results: Average participant age was 41.76±10.21 years (mean ± SD). The exposure level of benzene was 0.120±0.86 mg/m3 or 0.37±0.26 ppm, a figure greater than National Institute for Occupational Safety and Health (NIOSH) recommendations (NIOSH REL) Ca TWA 0.1 ppm. The results demonstrated that facial irritation, blurred vision, fatigue, and nausea were significantly associated with airborne, biomarkers. Irregular use of personal protective equipment (PPE), especially when spraying indoors (OR 1.46, CI 0.52-4.67, p<0.05), and poor use of PPE among operators may increase health risks (OR 6.08, CI 1.61 22.9, p<0.05). At the baseline measure, both groups had similar sociodemographic characteristics, personal habits, and environmental working conditions. After the intervention program, the intervention group had effectively reduced difference means occupational exposure for 3-phenoxybenzoic acid (3-PBA), trans, trans-muconic acid (tt-MA) and o-cresol. For effectiveness of intervention to reduce symptoms prevalence and chemical safety score, there were also high statistically significant differences between the groups at follow-ups 1 and 2, particularly had reduced eye and facial symptoms (facial burning, paresthesia, blurred vision), skin symptoms (rash/itchy skin) at during working and after working. However, this intervention was not associated with a beneficial effect on lung function. Conclusion: The findings suggest that the introduction and implementation of chemical safety programs could reduce biological exposure, symptoms prevalence and improve chemical safety behavior among VCOs that lead to prevent health symptoms due to chemical exposure. Further research is required to explain the findings regarding lung function.

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Lung function and functional capacity among foundry workers using effective risk control measures

Cited by 6 publications

References 19 publications

Use of cardiopulmonary exercise testing to assess early ventilatory changes related to occupational particulate matter

Use of cardiopulmonary exercise testing to assess early ventilatory changes related to occupational particulate matter

Predictive validity analysis of six reference equations for the 6-minute walk test in healthy Brazilian men: a cross-sectional study

An intervention of Safety chemical program to reduce occupational exposure and improve health among BMA Vector Control Operators

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