Hemodynamic parameters of right and left heart ventricles and both greater and lesser blood circulations were studied using Doppler echocardiography in 129 patients with arterial hypertension, 54 patients with dust related respiratory pathology and 97 subjects of two control groups. Relying on the results we concluded that (1) the right heart ventricle and pulmonary circulation are targets for arterial hypertension, (2) pressure increase in arteries of lesser circulation occurs at the initial stage of dust related respiratory disease, (3) and the research of pulmonary hemodynamics with functional load should be obligatory when examining relationship between the disease and the profession.