Assessment of changes in intracacardiac haemodynamics in children with idiopathic heart rhythm disturbances

The article reviews the issue of changes in intracardiac haemodynamics in adolescents with idiopathic ventricular heart rhythm disturbances regarding the degree of activity of the arrhythmic focus. The study of changes in haemodynamics included Doppler echocardiography and Quantative Blood Pool SPECT (QBS). The latter allows to equally estimate the parameters of the left and the right ventricles. The comparative analysis of cohorts and the control group revealed changes in cardiac contractile and diastolic functions. Moreover the nature and the intensity of changes were connected with the increase of ectopic activity of the arrhythmic focus. The right ventricle appeared to be the most vulnerable which was probably related to more frequent localisation of the arrhythmic focus in the right ventricular outflow tract.