[The use of transbronchial ECG leads for the early detection of hemodynamic disorders in the lesser circulation in chronic nonspecific lung diseases. 1].

Increased resistance of pulmonary blood vessels is of basic significance in the development of pulmonary hypertension. Atrial complex of transbronchial ECG leads, recorded with a special electrode, reveals early disorders of pulmonary circulation and consequent hyperfunction of the right atrium. Adequate task for ECG is registration of changes in myocardial biopotentials rather than quantitative assessment of pressure in the pulmonary artery. Combined bronchoscopy and electrocardiography enhance their potentialities and can be used to identify patients, who are likely to develop pulmonary hypertension.