FUNCTIONAL CLASS OF CHRONIC HEART FAILURE AND PARAMETERS OF PACEMEKER IN EARLY POSTOPERATIVE PERIOD

Pacing significantly improves the hemodynamic and clinical parameters of patients with cardiac arrhythmias and severe functional classes of chronic heart failure (CHF FC). Their control is impossible without dynamic monitoring of its parameters.

The purpose of the work was to analyze the parameters of pacemakers in various modes of stimulation in CHF FC in the early post-implantation period after pacemaker implantation.

Methods and materials. The study included 162 patients with pacemakers about on the atrio-ventricular (AV) block and sick sinus node syndrome (SSNS) in the modes of stimulation DDD/DDDR, permanent bradysystolia atrial fibrillation (AF) in the modes of stimulation VVI/VVIR, and dilated cardiomyopathy (DCM) in the modes of stimulation CRT-P/D. There was estimated base rate of stimulation, the percentage stimulation of the right (RV) and left ventricle (LV), the impedance toLV and RV electrodes, the amplitude of the RV andLV electrodes, detected and stimulated AV-delay, R-wave sensing, depending on the functional class (FC) chronic heart failure (CHF). CHF FC affects the choice of the parameters of the pacemaker, the increase is manifested by percent rise of stimulation, the amplitude of the electrodes of both ventricles and impedance decrease detected and stimulated AV-delay. It is concluded that a thorough CHF medication with FC fall should help to improve the parameters of the pacemaker.