So sánh đặc điểm điện sinh lý tim, hiệu quả điều trị bằng năng lượng sóng tần số Radio của rối loạn nhịp thất phải và thất trái

Objectives: Study and comperasion the electrophysiologic features and effect of the treatment by using radiofrequency catheter ablation (RFCA) between ventricular arrhythmias (VA) in right ventricle and left ventricle. Methods: 150 patient (pts) with 169 ventricular arrhythmias had done target site by EP study and treatment of RFCA, Prospective study, cross sectional descriptive study without control group. Results: 134 of VA in right ventricle (79 percent) and 35 of AV in left ventricle (21 percent) including 57/72 (79.2 percent) of right Ventricular Tachycardia (RVT) and 15/72 (20.8 percent) of Left Ventricular'Tachycardia (LVT); 132/160 (82.5 percent) of right ventricular premature contraction (RVPC) and 28/160 (17.5 percent) of left ventricular premature contraction (LVPC). The electrophysiologic features of RVT and LVT (Cycle length, Rate, QRS duration) were not significantly different two groups (P 0.05). The QRS duration of RVPC and LVPC were also not significantly different two groups (P 0.05), but the Coupling interval of RVPC and LVPC were significantly different two groups (P 0.05). Comperasion Some of ablation parameter between right AV and left AV such as temperature of ablation (oC), Energy of ablation (w), time of ablation (second), number of times for ablation for one target site had no significantly different two groups (P0.05). Conclusions: Number and ratio of RVA were higher in LVA; Conduction times of impul in the heart including PA, AH, HH, HV, PQ of patients had RVA and LAV were normal; The electrophysiologic features of RVT and LVT (Cycle length, Rate, QRS duration) were similar. The Coupling interval of RVPC and LVPC were significantly different two groups (P0.05). Some of ablation parameters between right AV and left AV had no significantly different two groups. Ratio of successful treatment by RFCA for VA in right ventricle were 96.2 percent, in left ventricle 88.2 percent. Ratio of fail treatment by RFCA for VA in right ventricle were 3.8 percent, in left ventricle 11.8 percent. Ratio of recurrence for VA in right ventricle were 14.4 percent, in left ventricle 13.3 percent. Ratio of complication were 2.1 percent in right ventricle.