Abstract
Aim. To assess the functional status, the state of ECG parameters, parameters of cardiac hemodynamics and quality of life in patients candidates for ablation of the atrioventricular node with the implantation of pacemakers, resynchronization devices (CRT) due to tachyform of atrial fibrillation. Materials and methods: the study included 61 patients with a mean age of 59.4 ± 10.4 years, BMI 31.3 ± 5.8; test 6-min. walk 315 ± 173m. Group 1 pacemaker – patients with implanted pacemaker 19 people, group 2 CRT – 42 people. Quality of life according to the Minnesota questionnaire in the cohort – 49 [32; 65] points (unsatisfactory), CHF FC 2 in general and FC 3 in the pacing group and FC 2 in the CRT group, but no significant differences. The mean QRS duration was 115 [90.146], ms. no significant differences between groups. Only the ratio of R6/S6 and the value of (S1+R6)-(S6+R1) were significantly different in subgroups with different QRS widths, which may be a predictor of the effectiveness of electrocardiotherapy. Ejection fraction (EF) was 32.0 ± 7.6% due to tachycardiomyopathy. Signs of interventricular and intraventricular dyssynchrony were registered. Conclusion: patients with tachycardiomyopathy have signs of a significant decrease in the quality of life and cardiac function, however, these changes, apparently, are not due to the width of the QRS complex, the presence of dyssynchrony and the criteria for referring to CRT therapy, but primarily tachysystole and a decrease in the overall contractility of the myocardium.
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