جستجوی مقالات مرتبط با کلیدواژه « علائم تنفسی » در نشریات گروه « پزشکی »

Respiratory complications arised from exposure to flour dust are among most common work-related diseases. This study was conducted to investigate flour dust exposure and its respiratory complications in bakery workers in Urmia in 2021.

This is a descriptive cross-sectional study conducted in 2021. The statistical population of the study consists of 166 bakers in Urmia. An standard questionnaire was used to assess the prevalence of respiratory symptoms in workers. Data analysis was performed at two levels of descriptive and analytical statistics by SPSS 22 software using t-test, chi-square and one-way ANOVA at the significant level of P <0.05.

The mean and standard deviation of age obtained 40.39 and 10.17 years and mean and standard deviation of work experience obtained 15.13 and 9.49 years. The most common complication in the studied people were chest sputum (22.3%) and cough (16.9%). According to the results, there were significant relationships between respiratory complications with the type of bakery (P= 0.0001), the type of contact with dust (P= 0.0001), and also with the type of job (P= 0.000).

The results of this study showed the existence of respiratory complications in the bakers of Urmia. Therefore, in order to reduce respiratory complications, it is necessary to do actions such as providing appropriate personal protective equipment, adequate ventilation, and reducing the duration of exposure.

Covid 19 disease is a pandemic disease in the world that has been receiving global attention since March 2020. Due to the high prevalence of this disease and its rapid spread, it is very important to identify various manifestations including respiratory and systemic manifestations.

This is a case-control and retrospective analytical study. The sample size is 180 children who were sampled by two offices selected from pediatricians and pulmonologists in Qom. Study variables in both groups were analyzed by SPSS software and descriptive tests and chi-square test.

The results of this study showed that dry cough (88.9%) and runny nose (36.7%) are the most common complaints in children in case and control groups, respectively; However, bloody sputum was the least common in both groups. Chi-square test showed that there was a significant increase in sputum cough, sore throat, diarrhea, body aches, wheezing, chills, runny nose, short ness of breath, weakness and dry cough in the case group compared to the control group.

The results of this study showed that the type and frequency of clinical symptoms in children who have at least one parent with coronavirus disease are different from children who have healthy parents. It is recommended that parents with corona do not delay in isolating themselves from others.

Cleaners make up a considerable part of workers in the worldwide and they perform their services as activities in home environment, industry, and work in hospitals and so on. Studies show that cleaning products contain a mixture of chemicals that many of them may affect health of the workers during be exposed to the breathing. So this study investigated the effects of these materials on a group of cleaners.
Methods and Materials: This cross-sectional study has been conducted on 120 of cleaners in Kashan University of Medical Sciences. Data is collected using Persian Saint George Respiratory questionnaire and spirometery was performed once. Each spirogyra’s interpretation was based on the ATS criteria .The results analyzed using SPSS15 and chi square test and t test.

Results show that between 80 cleaners who had inclusion criteria, 36.3%(29 patients) had respiratory symptoms in the workplace .The prevalence of respiratory symptoms, including: Shortness of breath 22/5% (n = 18), cough, 18/8% (n = 15), sputum 6/3% (5 patients), and wheezing 2/5% (2 people).The most common view of Spirometry is normal and probably normal (79/7%). Contact with acids and bases increase risk of respiratory symptoms in cleaner(3/71 fold). Spirometery view in contact to detergents or acids and bases has no significant relation.

The research shows that a third of patients had respiratory symptoms, So it is required that in review the respiratory system of employers in addition to use spirometric interpretation, the results of clinical signs and respiratory complaints should be considered to diagnosis

Exposure to chloride acid in industrial units can be associated with risks to the human respiratory system. The aim of this study was to investigate the respiratory symptoms and pulmonary dysfunction caused by exposure to chloride in acid washing unit of a steel industry.
This cross-sectional study was a descriptive-analytic study performed in a single acid washing unit in 2017. The exposed group included 45 male workers and a reference group of 41 unexposed employees from official employees. A questionnaire was used to collect personal and occupational data and a pulmonary function test was conducted in collaboration with a physician specializing in medicine to determine the pulmonary capacity of workers. Pulmonary function parameters included FVC, FEV1 and FEV1 / FVC. T-test and chi-square were used to describe and analyze the data in SPSS. The significance level in this study was determined equal to 0.05.
The results showed that all parameters of lung function in exposed subjects were lower than the reference group and this difference was statistically significant for FVC and FEV1 parameters (P 0.05). Based on the results of the regression model, exposures to hydrochloric acid increased the chance of these injuries by up to 7.4 times.
The findings of this study showed that exposure to hydrochloric acid alone could increase the risk of respiratory tract damage and pulmonary function disorders. Therefore, risk management should be considered in the face of this combination.

ECRHS questionnaire used for the survey of respiratory symptoms and asthma. In this study the prevalence and associated respiratory symptoms and spirometric indices in Tehran University students were assessed using a questionnaire ECRHS during 2013-2014.
In this cross-sectional study, 1729 students from all faculties of Tehran University of Medical Sciences were evaluated at ages 20 to 44 years. The first step for screening respiratory symptoms questionnaire was completed by volunteers ECRHS I that 671 people were excluded because test is negative, and 997 patients because of the reluctance to enter the second phase of the study did not ECRHS II, and 61 patients were entered into the second phase ECRHS questions at this stage was completed by a doctor.
The mean age of participants with respiratory symptoms was 23.2±3.7 (20-44), that 508 (48%) men and 550 (52%) were female. Prevalence of respiratory symptoms according ECRHS I for all the symptoms 61.2%, respectively, the most frequent wheezing (33%), and the symptoms of allergic rhinitis (73.4%), the prevalence of diagnosed asthma was 9.3%.
Significant direct correlations were found between MEF 25-75 ∆ and With waking with a feeling of heaviness on chest , with Difficulty breathing , between FVCex ∆ and Attack of shortness of breath at rest, between FVCex with Respiratory symptoms during certain times of the menstrual cycle , between FEV1 with Respiratory symptoms during certain times of the menstrual cycle. Also, between allergic rhinitis with FEV1 , between MEF 25-75 with allergic rhinitis, and FEV1/FVC ∆ with allergic rhinitis were found Significa nt direct correlations. But, no significant direct correlations were found between allergic rhinitis with FEV1/FVC, between allergic rhinitis with FVCex ∆.
Asthma seems to be a pattern of high prevalence of risk factors including Environmental, labor, industrial pollution, housing, behavior issues, misconceptions of the disease, lack of education to patients by clinicians. It seems that for improve asthma control, ECRHS questionnaire and spirometry test may be used as a complementary tool in clinical practice to detect adults with asthma and respiratory symptomes.

Background Spirometry as a screening method for occupational lung diseases is frequently used. The main purpose of spirometry is the early diagnosis of lung function decline before emergence of clinical symptoms. This study aimed to determine parameters associated with spirometery of industrial workers admitted for employment examinations Tuyserkan City.
Materials & Methods This is a cross-sectional study conducted on 200 workers of various industries in Tuyserkan in fall 2013. This study was performed by referring to the city health department of Tuyserkan occupational health and doing spirometric tests with Spirolab II device and filling out questionnaires through interviews. Spirometry test has been confirmed by standards of American Thoracic Society. Data were analyzed using Stata 11.
Results About 5.3% of men were in unsiutable condition in terms of their respiratory functions while this figure was 16.1% in women. The relationship between gender and respiratory status was statistically significant (P=0.03). With regard to the employment status and respiratory function of workers, 18% of of ordinary workers had unsuitable respiratory conditions. Spirometric patterns obtained from patients with respiratory problems revealed that 52.09% of them had complex pattern, 29.1% restrictive pattern and 22.8% obstructive pattern.
Conclusion According to the results, performing pre-employment and periodic examinations, continuous monitoring by health professionals, and using appropriate personal protective equipment along with training for quitting smoking are essential.

Wastewater treatment workers may be exposed to a wide range of chemical pollutants and biological contaminants such as bacteria and fungi. The aim of this study was to investigate the potential work-related respiratory disorders in workers of 10 wastewater treatment of petrochemical industries in Iran. This cross-sectional study was carried out on 198 employees of wastewater treatment plants and 99 non-exposed (referents) employees. American thoracic society (ATS) standard questionnaire was used for investigation of respiratory symptoms. Pulmonary function parameters were measured using a calibrated Vitalograph. The data were analyzed by SPSS version 16. The result of this study showed that odds ratio of cough, phlegm, productive cough, wheezing, and breathlessness in exposed group were 2.94, 1.10, 1.95, 0.82 and 1.97 times higher than reference subjects. Additionally mean values of most parameters of pulmonary function tests (PFT) were significantly lower in exposed individuals than in referent subjects (P<0.05). Significant increase in prevalence of respiratory symptoms and decrement in PFTs in wastewater treatment workers may be attributed to their exposure to bioaerosols.

Prevalence of respiratory symptoms and lung function impairments among Darab ginning factory workers Masoud neghab، Morteza nowroozi sarjoeeye Exposure to cotton dust and its bioaerosol contaminants is the major cause of byssinosis. This study was conducted to determine the prevalence of respiratory symptoms and acute and chronic ventilatory disorders among Darab ginning factory workers. In this cross sectional study the paremeters of pulmonary function and prevalence of respiratory symptoms were measured by portable medical spirometers and standard respiratory symptoms questionaires، respectively. The exposure group were qualified workers of one of Darab ginning factories and referent subjects were selected among clerical staff of Shiraz university of medical science. Data analysis was performed using spss version 19. In this study the prevalence of respiratory symptoms such as: cough، phlegm، wheezing، chest tightness and byssinosis were significantly more common in exposed group than in the referent subjects (p<0. 05). Additionally، some parameters of pulmonary function such as: VC، FEV1 and FEV1/FVC% in the exposed group were lower than the control group. Mean changes in all lung function parameters except FVC signigicantly reduced after 8-hour shift in the exposed group (p<0. 05). The results of this study indicate that seasonal short-term exposure to cotton dust and its bioaerosol contaminants is associated with byssinosis، respiratory symptoms and lung function impairments.

To date, there is not enough information about the toxic effects of dolomite. The purpose of this study was to assess the extent to which digging and excavating workers involved in constructing a dam in Fars province were exposed to dolomite dust and to evaluate the possible effects of this exposure on the prevalence of respiratory symptoms, functional impairments and radiographic abnormalities of the lungs. This cross sectional study was carried out at the constructing site of a dam in Shiraz, south of Iran. The study population consisted of thirty nine male workers with current exposure to dolomite dust and 40 healthy male unexposed employees. To determine the prevalence of respiratory symptoms, respiratory symptoms questionnaire were used. Personal dust samplers were used to assess the exposure concentrations. Additionally, subjects underwent lung function tests and chest X-ray. Atmospheric concentrations of dolomite dust exceeded current permissible levels. Exposed workers had significantly higher prevalence rates of respiratory symptoms than their referent counterparts (P<0.05). Similarly, decrements were noted in most parameters of pulmonary functions of exposed workers, although the difference was only significant for FEV1/FVC ratio (P<0.05). No significant differences were noted between exposed and referent subjects as far as their chest radiographs were concerned. The findings of this study indicate that medium term exposure to very high concentration of dolomite dust is likely to be associated with respiratory symptoms.

Flour dust is one of the allergens in the workplaces and its occupational exposure can cause respiratory impairments. The purpose of this study was to investigate the respiratory effects of exposure to flour dust in flour mill workers. This cross-sectional study was carried out at 6 flour producing factories in Razavi and South Khorasan provinces، Iran. Study subjects included 180 males (90 male workers with current exposure to flour dust and 90 male non-exposed employees). Determination of dust concentration was carried out with personal dust sampler at all production units of studied industries. Respiratory symptoms were investigated with American Thoracic Society questionnaire (Persian version). Lung function tests were done by a calibrated spirometer. The data were analyzed using SPSS (version 16). Mean of age and work experience of exposed group was 36. 8±9. 03 and 12. 0±5. 6 years، respectively. This result، for non-exposed group was 37. 3±8. 1 and 12. 58±5. 5 years، respectively. Atmospheric concentrations of respirable and inhalable dust were 13. 3±2. 38 and 38. 77±3. 6 mg/m3، respectively. Results indicated that prevalence of respiratory symptoms in exposed subjects was significantly higher than non-exposed workers. Likewise، pulmonary function parameters were significantly lower in exposed than reference group (p<0. 05). The findings of this study showed that occupational exposure to flour dust and age could be important factors predicting the prevalence of respiratory symptoms and functional impairment of the lungs

Garbage collectors form a large group of municipal workers who have occupational exposure to different airborne contaminants. The aim of this study was to evaluate the respiratory health of a group of garbage collectors who were working in Fars province. This cross-sectional study was undertaken among a group of 105 garbage collectors and 93 referrent individuals. Subjects were interviewed and respiratory symptom questionnaire، as suggested by the American Thoracic Society، was filled for them. Additionally، the parameters of pulmonary function were measured after two days of rest (before commencement of the saturday morning shift) for both garbage collectors and the referent subjects. sAnalysis of the data showed that some symptoms of respiratory disease such as shortness of breath (39%)، productive cough (9. 52%)، wheezing (18. 09%) and phlegm (10. 47%) were significantly (p<0. 05) more prevalent among garbage collectors. Similarly، significant decrements in FEV1 and FEV1/FVC ratio were noted in garbage collectors when compared with referent individuals. The spirometric pattern of ventilatory disorder was consistent with that of obstructive pulmonary diseases. Our data indicate that the prevalence of respiratory symptoms as well as lung function impairments are significantly higher in garbage collectors than in their counterparts (referent group) and this is likely to be attributed to their exposure to bioaerosols، exhaust fumes and other workplace contaminants

Cement dust is one of the workplace harmful chemicals. There is a disagreement about respiratory effects of cement. The main purpose of this study was to investigate the respiratory effects of exposure to cement dust.

The subjects consisted of 148 male workers (94 workers with current exposure to cement dust and 54 healthy unexposed employees as a referent group). Respiratory symptom questionnaires, as suggested by the American Thoracic Society, were administered to them. Determination of exposure was carried out by personal dust monitoring. Furthermore, the subjects underwent lung function tests by a spirometer. The data were analyzed applying t test and chi-square test.

The mean values of respirable and dust concentrations were estimated to be 7.70± 1.2 and 67.4± 5.4 mg/m3. Significant decrements in the parameters of pulmonary function were noted (p<0.05).

The findings of this study indicate that a strong association exists between exposure to cement dust and the prevalence of respiratory symptoms and functional impairments of the lungs.

IntroductionOrganophosphate pesticides are widely used for agricultural pest control. Recent studies have linked pesticide exposure to respiratory symptoms and spirometry abnormalities. Regular use of appropriate personal protective equipment could protect workers from adverse respiratory health effects. This study explores the prevalence of chronic respiratory symptoms and ventilatory function among workers with occupational exposure to organophosphate pesticides. Materials and MethodsAn interviewer- administered questionnaire was used to collect information on sociodemographic characteristic, smoking profile and history of respiratory health among 134 worker at a orgnophosphate production plant (exposed group), and workers occupationally unexposed to dust, fumes and gases (unexposed group). Pulmonary function was assessed for both groups. ResultsA higher percentage of the exposed workers reported recurrent and prolonged respiratory symptoms including cough (17%), phlegm (19%), wheeze (6%), dyspnoea (9%), shortness of breath (7%) and bronchial asthma (4%). Among the unexposed, prevalence of these symptoms were 9, 11, 1, 2, 4, and 1%, respectively. FVC, FEV1, and FEV1/FVC were significantly lower in the exposed workers compared with unexposed workers. Logistic regression analysis showed that the risk of respiratory symptoms increased 3.6 fold in organophosphate workers when compared to controls. ConclusionThis study suggests an increase of adverse respiratory health effects (reduction in lung function and a rise in respiratory symptoms) in workers with organophosphate exposure. We conclude that long term exposure to organophosphate is associated with chronic or permanent restrictive lung disease. This phenomenon was not observed in the control group.

Respiratory disorders are common medical problems among workers. Spirometry is the most important and available technique for pulmonary function test. In this research, basic pulmonary function indeces and prevalence of respiratory symptoms were investigated among the workers of a pipe mills. In this analytical case – control study, 70 pipe mills workers that have been exposed to the respiratory pollutants and 50 official staffs of a company were examined by interview, questionnaire and spirometry tests. Spirometry was performed according to the American thoracic society standards. Data was saved and analyzed by T-test in SPSS software. Difference between case and control groups from the viewpoints of age, height, weight and smoking was not significant. Prevalence of dyspnea, chest thightness, repeated cough, sputum and wheezing in the workers that have been exposed to the respiratory pollutants were significantly more than nonexposed workers (P< 0.05). Difference of averages of Forced Vitalcapacity (FVC) and forced expiratiory volume (FEV1) in spirometry between two groups was significant, however, FEV1 / FVC wasn,t significant. 4% of controls and 28.5% of cases had restrictive patterns. The results of this study exlpain no significant difference in the respiratory symptoms and spirometric indeces between pipe mills workers and the control group and the similarity of effectiveness or confounding agent in the two groups. Therefore, it is concluded that the appearing respiratory symptoms and reducing of pulmonary function in the pipe mills workers have been due to the exposuring of them to the respirable pollutants in the workplace.

Background and aimsExposure to flour dust and related allergens is one of the most common causes of occupational airway disease (OAD) and occupational asthma (OA). The main purpose of this study was to investigate the respiratory effects of exposure to high atmospheric concentrations of flour dust.MethodsThis study was carried out in a local flour producing factory in Shiraz, in 1384. Sixty seven subjects (35 exposed and 32 non-exposed) were investigated. The prevalence of respiratory symptom as well as lung function capacities was evaluated. Additionally, atmospheric concentrations of flour dust were measured. The data were analyzed by Independent sample ttest, Chi-square or fisher's exact test and multiple linear regression.Atmospheric concentrations of dust exceeded current permissible levels. Additionally, exposed workers had higher prevalence rates of regular cough, productive cough, wheezing, phlegm and shortness of breath. Likewise, significant (p<0.05) decrements in the parameters of pulmonary function were noted.ConclusionsThe findings of this study provide additional corroborative evidence in favour of the notion that after adjusting for age, smoking habits and other confounders, a strong association exists between exposure to flour dust and the prevalence of respiratory symptoms and functional impairments of the lungs.

Background and aimsThe main purpose of this study was to assess the acute and chronic effects of occupational exposure to low levels of formaldehyde on respiratory health.MethodsThis historical cohort study was conducted at a local melamine-formaldehyde resin producing plant. The study population consisted of seventy exposed and 24 non-exposed (referent) employees. In this study, a questionnaire was used to evaluate and determined the prevalence of respiratory symptoms. Atmospheric concentrations of formaldehyde were measured at different areas of the plant. Similarly, using a spirometer, the parameters of pulmonary function were measured during exposure and a few days after exposure ceased.ResultsAtmospheric concentrations of formaldehyde marginally exceeded current permissible levels. Additionally, significant decrements in some parameters of pulmonary function, both during and after exposure were noted. However, a relative recovery in lungfunctional capacity observed following temporary cessation of exposure. Furthermore, exposed workers had higher prevalencerates of regular cough, wheezing, phlegm, shortness of breath, chest tightness and episodes of chest illness associated with cold.ConclusionsThe findings of this study indicate that exposure to formaldehyde may induce respiratory symptoms, acute partially reversible and chronic irreversible functional impairments of the lungs.

The respiratory symptoms in welding workers have been appeare by increasing use of welding various poisoning gases and fumes in machine industry. It is necessary to evaluating of frequency of respiratory symptoms with scientific methods. Methods and Materials: In this historical cohort study، 60 non-smoker welding workers with history of at least 6 months work in welding، and 60 non-smoker office workers who were not expoused to respiratory pollution were selected from machine industry factories of Arak. Data was gathered by questionnaire. Occupationalist performed physical exams and spirometery. Data was statistically analyzed. There was a significant relationship between sore throat (p=0. 02)، cough (p=0. 04)، spectrum (p=0. 01)، and dyspnea (p=0. 007) with working in welding. But in symptoms such as rinite، hoarsening، nasal congestion، epistaxis، respiratory assessment and spirometery results difference was not significant. Symptoms of upper respiratory tract stimulation in welding workers were significantly more than non-expoused workers.