Respiratory Morbidity Induced by Occupational Inhalation Exposure to High Concentrations of Wheat Flour Dust

Neghab, Masoud; Soltanzadeh, Ahmad; Alipour, Abbas; Hasanzadeh, Jafar; Alipour, Hamzeh

doi:10.1080/10803548.2012.11076960

Cited by 5 publications

(2 citation statements)

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“…Pulmonary exposure to chemicals is one of the critical types of occupational exposure. Therefore, pulmonary injuries, such as different chronic and acute pulmonary diseases, are among the most frequent complaints made by industrial workers who are exposed to such chemicals (Heidari et al, 2019;Neghab et al, 2012aNeghab et al, , 2012bNeghab et al, , 2013. The findings of this study showed that the average exposure of small and medium industries' workers to ammonia was lower than 1/5 (20%) of the standard limit for a long exposure (TLV-TWA = 25 ppm) and lower than 1/7 (14.3%) of the standard limit for a short exposure (TLV-STEL = 35 ppm) (Neghab et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Does exposure to ammonia concentrations lower than the threshold limit value cause acute pulmonary effects?

et al. 2023

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One of the major toxic effects of exposure to ammonia is the resulting pulmonary acute and chronic effects. This study investigated the acute pulmonary effects of exposure to ammonia lower than the recommended threshold limit value (TLV). This cross-sectional study was conducted in 2021 in four chemical fertilizer production industries using ammonia as the main raw material. A total of 116 workers who were exposed to ammonia were investigated. The level of exposure to ammonia was measured by NMAM 6016, and the evaluation of pulmonary symptoms and function parameters was done using the American Thoracic Society and European Respiratory Society protocols in four sessions. The paired-sample t-test, repeated measures test, Chi-square, and Fisher’s exact test were run to analyze the collected data. The prevalence rates of pulmonary symptoms, including cough, dyspnea, phlegm, and wheezing, were 24.14, 17.24, 14.66, and 16.38%, respectively, after one exposure shift. It was observed that all pulmonary function parameters were reduced after one exposure shift to ammonia. The results revealed that the parameters of vital capacity, forced vital capacity (FVC), forced expiratory volume in the first second (FEV1), the FEV1/FVC ratio, and peak expiratory flow significantly decreased ( p < 0.05) across four exposure shifts. The findings indicated that exposure to ammonia at concentrations lower than one-fifth of TLV could bring about acute pulmonary effects and reduce pulmonary function parameters, similar to the pattern observed in obstructive pulmonary diseases.

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Section: Discussionmentioning

confidence: 99%

Does exposure to ammonia concentrations lower than the threshold limit value cause acute pulmonary effects?

et al. 2023

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“…In the first phase, the standard respiratory symptoms questionnaire was completed, including demographic information, previous employment history, smoking habits, history of respiratory diseases, and questions related to the symptoms of respiratory disorders (cough, sputum, wheezing). [ 11 ]…”

Section: Aterial and M Ethodsmentioning

confidence: 99%

Investigating the effect of welding fume in pulmonary function of welders in an automobile industry

safarivariani

saadiani

Hosseinkhani

2023

Indian J Occup Environ Med

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Context: Respiratory exposure to welding fumes directly or indirectly, in the long run, can lead to systematic effects among welders. Aims: This study aimed to investigate respiratory symptoms and pulmonary function parameters among welders working in the automotive industry. Material and Methods: This cross-sectional study was performed among 2304 workers from two groups in the manufacturing and administrative staff (as exposure and control groups). Pulmonary function parameters and respiratory symptoms were collected through periodic spirometry examinations and a standard respiratory symptoms questionnaire. Exposure to welding fumes was obtained from the annual measurement data based on the NIOSH7300 method. Data were analyzed using SPSS software version 22 and linear and multiple regression statistical tests. Results: The mean age of the subjects in the case and control groups were 37.5 and 38.5 years, respectively. All the apparent symptoms of respiratory diseases (cough, sputum) in the welder’s group were more than in the control group. Also, there was a significant difference between the respiratory symptoms in the two groups (P < 0.001). The mean value of all spirometric parameters (FVC, FEV1, FEV1/FVC, FEF25-75, PEF) in the case group (welders) was significantly lower than the control group. Conclusion: The results of this study revealed that the variables of age and work experience effectively reduce all spirometric parameters of welders. Also, regarding the effect of metal vapors, a significant relationship has been seen between Cu in welding fume and FEF25-75 and FEV1 spirometric parameters.

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Effects on respiratory system due to exposure to wheat flour

Said

AbdelFattah

Almawardi³

2017

Egyptian Journal of Chest Diseases and Tuberculosis

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Respiratory Morbidity Induced by Occupational Inhalation Exposure to High Concentrations of Wheat Flour Dust

Abstract: Introduction. The main purpose of this study was to investigate the respiratory effects of exposure to high airflour dust occupational exposure respiratory symptoms functional impairments of the lungs

Cited by 5 publications

References 20 publications

Does exposure to ammonia concentrations lower than the threshold limit value cause acute pulmonary effects?

Does exposure to ammonia concentrations lower than the threshold limit value cause acute pulmonary effects?

Investigating the effect of welding fume in pulmonary function of welders in an automobile industry

Effects on respiratory system due to exposure to wheat flour

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