ECHOCARDIOGRAPHIC CRITERIA FOR OPTIMIZATION OF REGIMES OF BI-VENTRICULAR PACEMAKER
To evaluate the dynamics of cardiac output in the course of changes in pacing regimes using the integral of circulation in the right carotid artery and such ultrasound indices as: indices of intra- and inter-ventricular dyssynchrony, index of mechanic delay, the left ventricular ejection fraction, and others, twelve patients with chronic heart failure of functional classes III-IV (NYHA) in whom the resynchronizing treatment was performed were followed-up.