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Query: UMLS:C0037090 (Respiratory symptoms)
 467 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Respiratory symptoms and past history of chest disease as well as spirometric tests were investigated in 72 of 86 (83.7%) employees of a middle sized quarry in Rio de Janeiro, Brazil. Seventy one were men (98.6%), and the mean age was 36.2 +/- 9.3 years (20-65). Forty two (58.3%) had occupations considered as highly exposed to dust, and 30 (44.7%) were considered as lightly exposed. Forty (55.6%) were smokers, 20 (27.8%) never had been smokers and 12 (16.7%) were former smokers. Symptoms and past history were investigated with a questionnaire based on international models, and adapted for the Brazilian public. A high prevalence of symptoms (except for dyspnea) was noted: 47 (65.3%) had one or more symptoms-there was cough in 31.9%, expectoration in 41.7% dyspnea in 9.7% and wheezing in 33.3%. The symptoms were found to be associated mostly with a past history of chest disease, and also with smoking, factors which explained, in part, the presence of the symptoms. No association with a higher exposure to dust was found. The exposure to dust did not explain the symptoms. The spirometric tests were performed on a 6 liter bell spirometer. The means of the parameters were lower than one would expect in a non selected population sample--89.9 +/- 11.2% of predicted for the Forced Vital Capacity (FVC), 90.1 +/- 12.9% for the Forced Expiratory Volume in 1 second (FEV1) and 92.9 +/- 32.7% for the Forced Expiratory Flow between 25% and 75% of the FVC (FEF25-75). However, the proportions of abnormal results were comparable to the reported ones from unselected samples. There was no statistically significant influence of higher dust exposure, past history or smoking on the means of the results. It is concluded that, in this sample of quarry employees, no association between respiratory symptoms or spirometric results and dust exposure could be demonstrated. There was an association between the symptoms, but not with the spirometric results, and a past history of chest disease, as well as with smoking.
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PMID:[Respiratory symptoms and spirometric tests of quarry workers in Rio de Janeiro]. 806 90

Respiratory symptoms and ventilatory capacity were studied in a group of 135 women employed in greenhouses. In addition, a control group of 51 unexposed women were studied. Greenhouse workers had significantly higher prevalence of chronic cough, dyspnea, chest tightness and rhinitis (p < 0.01) than the controls. Smokers had significantly higher prevalence of chronic cough (p < 0.01) and rhinitis (p < 0.05) than nonsmokers. There was a high prevalence of acute symptoms during work shift. In greenhouse workers there was a statistically significant decrease of measured ventilatory capacity tests (except FVC) as compared to the predicted normal values, especially for FEF25. Smokers and nonsmokers had similar changes of ventilatory capacity as percentage of the predicted normals. Greenhouse workers exposed for more than 10 years had considerably lower FEF50 and FEF25 as percentage of the predicted values than those exposed for less than 10 years. Our data indicate that longer exposure in greenhouses may be associated with the development of acute and chronic respiratory impairment.
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PMID:[Respiratory symptoms and pulmonary ventilatory function in greenhouse workers]. 813 60

Respiratory symptoms and ventilatory capacity were studied in 259 female confectionary workers and in 65 non-exposed controls. Most of the chronic respiratory symptoms appeared more frequently among the exposed workers, particularly if they worked in exposure to flour, talc, starch, acids and alcohol. There was a high prevalence of acute symptoms that developed during work shift. This was true especially of cough, dyspnea, burning and dryness of the throat and eye irritation. The exposed workers exhibited statistically significant acute reductions of ventilatory capacity. Those were particularly pronounced for FEF50 (range: 4.6-13.0%) and FEF25 (range: 4.7-22.3%). The measured preshift values of ventilatory capacity were significantly lower than the predicted normal values. The administration of disodium chromoglycate (DSCG 40 mg) significantly diminished mean across-shift reductions in all ventilatory capacity tests. Data suggest that sensitive confectionery workers may develop acute and chronic respiratory symptoms accompanied by acute and/or chronic changes in ventilatory capacity.
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PMID:[Respiratory function in confectionary workers]. 824 28

The clinical features, chest radiographs and computed tomographic (CT) images were evaluated in 11 cases with serologically proved adult measles complicated with pneumonia (10 were previously healthy and one had sarcoidosis). Pneumonia appeared during the rash period in all cases. Respiratory symptoms were cough (9/11), dyspnea (3/11), and hypoxemia (10/11). Pneumonia manifestations were detected in only 4 cases by chest radiograph; on the other hand, they were seen in all cases by CT scan and consisted of ground-glass opacities (73%), nodular opacities (64%) and consolidation (27%). CT seems to be a useful method to detect measles pneumonia if it is suspected. Measles pneumonia in previously healthy patients had a good prognosis, as the hypoxemia disappeared within 6 days in all cases. The sarcoidosis patient showed prolonged pneumonic shadows and period of hypoxemia. Measles pneumonia occurring in a host with cellular immunodeficiency may have a severe clinical course.
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PMID:[Clinical features of measles pneumonia in adults: usefulness of computed tomography]. 825 23

Respiratory symptoms and ventilatory capacity were studied in a group of 74 sewage workers employed in cleaning the city sewage system of Zagreb, Croatia. Workers were studied by their work stations: closed channels (N = 26), drainage (N = 31), and other sewage workers (N = 17). The prevalence of chronic respiratory symptoms was higher in closed channel and drainage workers than in controls, particularly for chronic cough (range: 41.9-46.2% vs. 14.3%), chronic phlegm (range: 38.7-46.2% vs. 14.3%), chronic bronchitis (range: 32.3-42.3% vs. 8.6%), and chest tightness (range: 29.0-53.8% vs. 0%). In the first two groups of sewage workers there was a high prevalence of acute symptoms which developed during the work shift, being particularly pronounced for eye irritation (range: 16.1-26.9%), dyspnea (16.1-23.1%), dizziness (range: 6.5-23.1%), throat burning (9.7-19.2%), and skin irritation (range: 22.6-26.9%). Baseline ventilatory capacity was significantly decreased compared to predicted values in sewage workers; in particular, values for FEF50 and FEF25 were reduced, suggesting obstructive changes in smaller airways. Our data indicate that sewage workers experience frequent acute and chronic respiratory symptoms and exhibit objective evidence of respiratory dysfunction.
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PMID:Respiratory function in sewage workers. 850 53

The relation between air pollution and the exacerbation of childhood asthma was studied in a panel of 71 children (aged 5 to 7 yr) with mild asthma who resided in the northern part of mexico City. During the follow-up, ambient measures of particulate matter less than 10 microns (PM10, 24-h average) and ozone (1-h maximum) frequently exceeded the Mexican standards for these contaminants. The peak expiratory flow rate (PEFR) was strongly associated with PM10 levels and marginally with ozone levels. Respiratory symptoms (coughing, phlegm production, wheezing, and difficulty breathing) were associated with both PM10 and ozone levels. An increase of 20 micrograms/m3 of PM10 was related to an 8% increase in lower respiratory illness (LRI) among children on the same day (95% confidence interval [CI] = 1.04-1.15), and an increase of 10 micrograms/m3 in the weekly mean of particulate matter less than 2.5 microns (PM2.5) was related to a 21% increase in LRI (95% CI = 1.08-1.35). A 50 parts per billion (ppb) increase in ozone was associated with a 9% increase in LRI (95% CI = 1.03-1.15) on the same day. We concluded that children with mild asthma are affected by the high ambient levels of particulate matter and ozone observed in the northern part of Mexico City.
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PMID:Effects of air pollution on the respiratory health of asthmatic children living in Mexico City. 875 98

This study was undertaken to assess the long-term respiratory health consequences of smoke inhalation in patients who are burns survivors. Patients with smoke inhalation resulting from domestic flame or fire were studied. Medical records were the primary source for the selection of the patients. Smoke inhalation was diagnosed on the basis of the visual appearance of the airways on the reported bronchoscopy. Patients who participated in the study were compared on important characteristics with those who did not participate. The participants were then assessed by questionnaire, physical examination, chest radiograph and pulmonary function tests. Twenty three out of 45 patients who had survived smoke inhalation participated in the study. Participants and nonparticipants were comparable with respect to gender, age, time since injury, aetiology of injury, and total body surface burned. Participants had more facial burns, more severe bronchoscopic findings of smoke inhalation and required intubation more frequently. Respiratory symptom assessment and pulmonary function tests were performed 45 +/- 23 months after smoke inhalation. Four patients reported an increase in dyspnoea, one an increase in cough and one an increase in phlegm. All the patients had pulmonary function tests and bronchial responsiveness (provocative concentration of histamine resulting in a 20% fall in forced expiratory volume in one second (PC20) > 16 mg.mL-1) within normal limits. The four patients complaining of increased dyspnoea had results within normal limits for cardiac and respiratory variables on maximal exertion. The present study indicates that, in burn patients, smoke inhalation resulting from a single domestic fire does not necessarily imply long-term respiratory health consequences.
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PMID:Combined smoke inhalation and body surface burns injury does not necessarily imply long-term respiratory health consequences. 883 61

A group of 135 textile dyeing workers (97 male and 38 female) was studied for the prevalence of acute and chronic respiratory symptoms and lung function changes. Respiratory symptoms were elicited by a standardized questionnaire, and lung function testing was performed before and after the morning shift by recording maximum expiratory flow-volume (MEFV) curves. In addition, 103 nonexposed control workers were studied. The prevalence of all chronic respiratory symptoms was significantly higher in the exposed than in the control workers; in particular, the prevalence of occupational asthma was 6%. The exposed nonsmoking workers had more complaints than the controls who were nonsmokers. As expected, most of the symptoms were more prevalent in smokers than in nonsmokers. Nonsmokers with both long- and short-term work exposure had higher prevalences of dyspnea and rhinitis than control workers. Smokers exposed for 10 years or less had significantly higher prevalences of chronic phlegm than nonsmokers with the same duration of exposure (p < 0.05). In workers exposed for > 10 years, there were significantly higher prevalences of chronic cough, chronic phlegm, and chronic bronchitis in smokers than in nonsmokers (p < 0.01). A high prevalence of shift-related symptoms was found in exposed workers. Significant across-shift reductions of ventilatory capacity tests were documented in this cohort and varied from an average of 4.0% for FVC to 14.2% for FEF25. Preshift values of ventilatory capacity were significantly lower in this exposed population compared to predicted values suggesting a chromic effect. Our data suggest that textile dyeing workers develop acute and chronic respiratory impairment as a result of their exposures. These findings are exacerbated by cigarette smoking.
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PMID:Respiratory function of textile workers employed in dyeing cotton and wool fibers. 905 58

Respiratory symptoms and ventilatory capacity were studied in 97 women carpet weavers in a hand-made carpet weaving industry in Umtata, Transkei, South Africa. The controls were from a bottling plant in the same city. Both groups were Black Africans from the Xhosa-speaking population. The population we studied were non-smokers and there was no significant difference in age, race or height between the groups. The exposed weavers had significantly lower forced expiratory indices than the control group. Mean forced expiratory volume in 1 second (FEV1), forced mid-expiratory flow (FEF 25-75%), forced expiratory flow between 200 ml and 1200 ml of forced vital capacity (FEF 200-1200), and peak expiratory flow (PEF) were: 26.0%, 39.0%, 36.4% and 28.5% lower respectively in the exposed group compared with the controls. Mean forced vital capacity (FVC) and forced expiratory ratio (FEV1/FVC x 100) were 22.0% and 6.6% lower respectively in the exposed group compared with the controls. The percentage predicted (%pred) values of FVC, FEV1, FEV1/FVC ratio, FEF 25-75%, FEF 200-1200, and PEF in the exposed group were 82.9%, 77.1%, 95.6%, 64.6%, 72.2% and 82.8%, respectively. The prevalence of FEV1/FVC ratio less than 70% in the exposed group was 37.2%, while in the controls it was 12%. The exposed group reported a significantly higher prevalence of respiratory symptoms compared to the control. The prevalence of nasal symptoms and cough was 62.8% and 58.1%, respectively in the weavers. Weavers who reported cough, breathlessness, and wheezing had significantly (p < 0.01) lower pulmonary function than those who did not report these symptoms. The present study demonstrates that the continual exposure to dust in weavers in this industry is associated with significantly lower pulmonary function, higher prevalence of respiratory symptoms, and weavers show signs of airway obstruction compared to workers not exposed to this type of dust. Women in the weaving industry have a significant occupationally related respiratory impairment.
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PMID:Respiratory symptoms and pulmonary function in a group of women weavers in South Africa. 923 35

Respiratory symptoms and pulmonary function were studied in a cross-sectional survey of 348 Portland cement workers in Jordan. The workers were differently exposed to dust for at least 3 years. The geometric means +/- SE of respiratory cement dust concentrations were 0.5 +/- 2.1, 1.6 +/- 2.61 and 3.9 +/- 4.02 mg/m3 in the three determined levels of exposure, respectively. About 42% of the workers reported various chronic respiratory symptoms, but cough, dyspnea, and asthma were most prevalent (18.7%, 17.5% and 15.8%, respectively). The prevalence of respiratory symptoms did not tend to increase with tenure. Asthma was significantly associated with the age of 30-39 years and showed a proportionate association with exposure level. Smokers had higher rates of symptoms than non-smokers. Rates of cough, phlegm, and wheeze increased proportionally to the number of cigarettes smoked per day. Overall pulmonary function indices were normal. When the independent variables were fit into a regression model, age significantly affected FEV1/FVC and current smoking affected FEF25-75%. It is concluded that inhalation of cement dust irritates the respiratory tree without markedly affecting lung function, and smoking aggravates this effect.
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PMID:Pulmonary manifestations in cement workers in Jordan. 957 67


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