Cardiac hemodynamics and myocardial contractility in patients with ventricular arrhythmias

Objective: To evaluate cardiac function before and after radiofrequency ablation in patients with ventricular arrhythmias. Material and methods: The study included patients (n=22, mean age of 43 5±11.7 years) with ventricular arrhythmias (VA): premature ventricular beats (n=17) and paroxysmal ventricular tachycardia (n=5). Procedure of radiofrequency ablation (RFA) of ventricular arrhythmia was performed in 22 patients according to appropriate indications. Comparison group comprised 15 patients (mean age of 56.3±8.3 years) without cardiac arrhythmias. All patients underwent a complete clinical examination including gated blood pool SPECT (GBP-SPECT). Results. Compared with control group, patients with ventricular arrhythmia had moderate dilatation and reduced contractile function of both ventricles. The value of RV EF in patients with VA were significantly lower than in the control group (43.25±8.08% and 54.35±12.48%, p