[Echocardiographic evaluation of hemodynamics in patients with interatrial septal defect during pregnancy]

A total of 48 patients with interatrial septal defect were examined over time during pregnancy and after delivery. Echocardiographic criteria in the assessment of the volume of the arterial-venous blood ejection in this congenital heart defect were used. Correlation between a clinical course of pregnancy and postdelivery period and the basal level of hemodynamic disturbance was obtained. A critical level of shunt with the initial signs of disturbances of myocardial compensatory processes was revealed.