title: [Determination of pressure in the pulmonary artery by indirect method in pregnant women with heart defects].
abstract: The purpose of the work was to ascertain the degree of reliability achievable by an indirect measurement of pressure in the pulmonary artery in pregnant women with congenital and acquired heart diseases. To determine the pressure in the pulmonary artery by the indirect method electro-phonocardiograms and a phlebogram from the jugular vein were recorded simultaneously. The pressure in the pulmonary artery was measured with reference to the duration of the isometric relaxation period of the right ventricle, estimated from the distance between the pulmonary component of the II sound and the beginning of the diastolic fall on the phlebogram. By registering the duration  of this period and the heart rate the systolic pressure in the pulmonary artery was found from the nomogram. A total of 55 patients, including 19 pregnant women, were examined. The pressure levels calculated by the indirect method were contrasted against the results obtained through catheterization of the cardiac cavities,  or during surgery--by direct puncturing. Investigations have shown a high degree of reliability of the estimated pressure levels in the pulmonary artery of patients with congenital and acquired cardiac defects. The indirect method of measuring the pulmonary artery pressure is simple, quite safe and accurate. It allows one to ascertain the extent of pulmonary hypertension in pregnant women irrespective of the type of the defect, the age and the intensity of the pulmonary hypertension.
mesh_terms: D001795:Blood Pressure Determination / Q000379:methods; D006328:Cardiac Catheterization; D004562:Electrocardiography; D005260:Female; D006330:Heart Defects, Congenital / Q000503:physiopathology*; D006801:Humans; D010701:Phonocardiography; D011247:Pregnancy; D011249:Pregnancy Complications, Cardiovascular / Q000503:physiopathology*; D011651:Pulmonary Artery / Q000503:physiopathology*; D012214:Rheumatic Heart Disease / Q000503:physiopathology*
vernacular_title: Opredelenie davleniia v legochnoĭ arterii kosvennym metodom u beremennykh pri porokakh serdtsa