[The echocardiographic indices of patients with chronic bronchopulmonary diseases due to exposure to jute, flax and kenaf dusts].

Chronic bronchopulmonary diseases without concomitant diseases in 32 workers contacting with dust of jute, flax, kenaf were not accompanied by abnormal echocardiographic findings. Patients with byssinosis and chronic bronchitis showed a statistically valid increase of the stroke volume indicating potential possibility of functional loads of the myocardium and its structural sequels during advance of bronchopulmonary diseases.