Pneumoconiosis and chronic bronchitis.

Contrasting geographical distribution of mortality from pneumoconiosis and chronic bronchitis and emphysema in British coal miners.

To explore whether the characteristics of coal mine dust that predispose to chronic airways obstruction are the same as those associated with pneumoconiosis, mortality from the two disease was compared in coal miners in 22 counties of England and Wales during 1979-80 and 1982-90. The proportional mortality ratios (PMRs) for coal workers' pneumoconiosis varied from 135 (95% confidence interval (...

Blood Groups of Miners with Coal-workers' Pneumoconiosis and Bronchitis.

An unexpected finding in a survey of a random sample of men from the Rhondda Fach valley in South Wales suggested an association between blood group A and coal-workers' pneumoconiosis. A further and larger sample of 1,250 miners and ex-miners from the same area, covering the same age range of 35 to 64 years, was chosen at random from the population in order to verify this finding. Each man was ...

Mortality of Gasworkers with Special Reference to Cancers of the Lung and Bladder, Chronic Bronchitis, and Pneumoconiosis.

Atopy, smoking, and chronic bronchitis.

The aim was to test the hypothesis that atopy increases the occurrence of chronic bronchitis. Relations between atopy, smoking, and chronic bronchitis were studied in farmers. The data were from two successive postal surveys and a skin prick tested subsample. The cross-sectional study consisted of 9017 farmers. Those 6899 farmers who did not have chronic bronchitis at the beginning and who cont...

CIFEEST eddorials Chronic Bronchitis

CHEST / 89 / 3 / MARCH, 1986 321 Oxidant Damage by Leukocytes T he pathogenesis of chronic bronchitis remains poorly understood. Particularly significant is our lack of understanding of why only a minority of patients with “simple” chronic bronchitis progress to the advanced form of the disease with chronic airflow obstruction. Much of our knowledge of this disease is derived from morphologic s...