[The importance of ultrasonic study of the right heart ventricle and pulmonary artery in the diagnosis of hypertension of the lesser circulation].

The data obtained during ultrasonic examination of the right heart ventricle and pulmonary artery are compared to the data of venous catheterization of the heart in 30 patients with chronic pulmonary diseases. Significant direct relationship was established between the correlations of the right and left ventricle volumes, the end diastolic and systolic volumes of the right ventricle, the cross section area of the right main pulmonary artery as was an inverse relationship between the ejection fraction and systolic effective pressure in the right ventricle. In bronchopulmonary diseases, two-dimensional echocardiography is an informative enough method not only in the assessment of hypertrophy, dilatation and failure of the right heart ventricle but also in indirect diagnosis of pulmonary circulation hypertension.