Non-invasive topical diagnostics of heart arrhythmias

The aim of this study was to measure the accuracy of noninvasively obtained ventricular activation (isolated epicardial vs combined endo-epicardial mapping) as compared with that of standard invasive mapping in patients with ventricular arrhythmias. 94 patients (35 males and 59 females) aged 20 to 67 years (mean age 42.6 years) with ventricular arrhythmias of different localization and etiology and 8 patients (4 males and 4 females) aged 21 to 65 years (mean age 48.8 years) with atrial arrhythmias were examined. All patients underwent noninvasive electrophysiological examination, which was performed with Amycard System, subsequent intracardiac mapping and radiofrequency catheter ablation. The arrythmogenic focus localizations coincided in 83 cases, in 11 patients with ventricular arrhythmias some variances were observed and in patients with atrial arrhythmias no such variances were found. Thus, the accuracy of noninvasive mapping turned out to be 89.2%.