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Biomedical subjects

W Jedrychowski

Publications and source records attributed to W Jedrychowski.

At least 127 records · Page 7Linked to original sources
PubMed1979

A consideration of risk factors and development of chronic bronchitis in a five-year follow-up study of an industrial population.

A five-year follow-up study in an industrial population showed that the prevalence and development of chest symptoms in men was related mainly to their smoking habits and, to a lesser degree, to age. Mean FEV1 values were related to age, and decrease in FEV1 was related to age and smoking habits. The levels of airborne dust and fluorides at the working places were related to the prevalence of chronic bronchitis (CB) symptoms, to the persistence of those symptoms during the five-year period, and to decrease of FEV1 values during that time. The decrease in FEV1 was especially noticeable among current smokers. The five-year incidence study showed that particular occupational factors do indeed have a real effect, but their meaning in the development of the CB syndrome is less marked than was expected from the prevalence rates.

Adult↗
PubMed1978

[Effects of occupational factors on the natural course of chronic bronchitis in a prospective observation of the industrial population].

Frequence of occurrence and dynamics of chronic bronchitis symptoms as well as barrier syndrome in the examined men in a plant was connected primarily with tobacco smoking and less with the age. Mean values FEV1 depended on the age of examined workers and the rate of spirometric values decrease increased with the age and was connected with smoking habit. It has been ascertained that there is a direct relationship between air contamination with dusts and fluorides and frequency of occurrence of chronic bronchitis symptoms, maintenance of the symptoms for 5 years and decrease of FEV1 value at that period especially in a group of smokers.

Air Pollutants↗
PubMed1978

[Effect of occupational environment on the occurrence of chronic nonspecific respiratory tract diseases among workers engaged in the production of superphosphates].

The paper was aimed at establishment of the contribution of work conditions to etiology of chronic bronchitis, asthmatic symptoms and lung ventilation disturbances. The investigation involved 354 men producing superphosphate in the Sulphur Processing Plant in Machów near Tarnborzeg and the control group of 276 workers from the same plant but little exposed to industrial dusts. The analysis of mean FEV1 indices with different smoking habits, respiratory tract symptoms and work environment, was based on so called corrected i.e. standardized mean values, with regard to age and increase based on multiple regression equations. In the workers producing superphosphate much more frequent chronic bronchitis (PNO), asthmatic syndrome (ZA) and lung ventilation disturbances were found. Corrected FEV1 arithmetic means in those with PNO and ZA symptoms were significantly lower in those from superphosphate division than in the control group. In addition, in the superphosphate division a significant linear trend of the proportion of lung ventilation disturbances cases, depending on symptoms category, was found. These results reveal harmful effect of air pollution in work environment upon health status of the exposed workers.

Air Pollutants↗
PubMed1977

[Epidemiological study of chronic bronchitis in a population of workers in a fertilizer factory].

The authors investigated the influence of working conditions--with particular reference to dust and fluorite pollution--on the epidemiology of chronic bronchitis in 197 subjects working in a fertilizer producing plant in Krakow (Poland). The investigation included history, respiratory function tests (VC, TVC), height and weight measurement, rhinolaryngologic examination, nasal mucosa cytology and physical examination. The environmental survey included measurements of the dust respirable fraction and fluorite concentration in the air. The prevalence of chronic bronchitis was found to increase with the length of working activity and to be much higher in smokers than in non-smokers. Furthermore, in subjects working at the sites with the worst environmental situations it proved to be twice as high as in the remainders. Likewise higher proved to be the prevalence of laryngitis and sinusitis. The prevalence of chronic bronchitis was found to be much higher in workmen with more marked spirometric changes. In subjects affected with chronic bronchitis alterations of the nasal mucosa epithelium were also found.

Adult↗