[Clinical evaluation of catheter ablation for idiopathic ventricular arrhythmia originating from ventricular outflow tract].
OBJECTIVE
To study the ECG and electrophysiological characteristic of idiopathic ventricular tachycardia (VT) and premature ventricular contraction (PVC) originating from ventricular outflow tract and assess the clinical effect of radiofrequency catheter ablation (RFCA) for treatment.


METHODS
105 patients aged from 12 to 73 years old were treated with RFCA. Activation mapping, pace mapping and non-contact mapping system of Ensite 3000 were used during the procedure.


RESULTS
(1) VT and PVC were successfully ablated in 97 out of the 105 patients (93.3%), 15 were recurrent but succeed in the second time. (2) 84 patients originated from right ventricle outflow tract (RVOT) and the remaining 21 patients from left ventricle outflow tract (LVOT). (3) 3 patients have the pericardial tamponade during ablation.


CONCLUSIONS
RFCA is an effective and curative therapy for ventricular arrhythmia originating from ventricular outflow tract.
Wu
Xiao-yu
XY
Department of cardiology, the First Affiliated Hospital of Harbin Medical University, Harbin 150001, China.
Gu
Hong-yue
HY
Liang
Zhao-guang
ZG
Zhang
Shu
S
Jiang
Xiu-rong
XR
Wu
Guang-ming
GM
Qu
Xiu-fen
XF
Li
Wei-min
WM
Liu
Shao-wen
SW
D000293:Adolescent; D000328:Adult; D000368:Aged; D017115:Catheter Ablation; D002648:Child; D004562:Electrocardiography; D004594:Electrophysiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D017180:Tachycardia, Ventricular / Q000503:physiopathology / Q000628:therapy*; D016896:Treatment Outcome; D018879:Ventricular Premature Complexes / Q000503:physiopathology / Q000628:therapy*