[Doppler-echocardiographic assessment of the degree of pulmonary hypertension and right-ventricular pressure in patients with ventricular septal defects].

The study was performed in 53 children aged 3 months to 4 years who had ventricular septal defect. Systolic pressure in the right ventricle, pulmonary artery and the severity of pulmonary hypertension were determined by two way: 1) from arteriovenous shunt via ventricular septal defect before its surgical closure; 2) from systolic regurgitation via the tricuspid valve after its seal. Right ventricular diastolic pressure was measured by Doppler...