Electrocardiographic characteristics and radiofrequency catheter ablation of ventricular tachycardia and frequent ventricular premature contractions originating from left ventricular outflow tract
- VernacularTitle:射频消融治疗起源于左室流出道的室性心动过速和频发室性期前收缩
- Author:
Hong CHEN
;
Weiwei ZHANG
;
Rongqin LI
;
Zhanquan LI
;
Ran CUI
- Publication Type:Journal Article
- Keywords:
Tachycardia,ventricular;
Cardiac complexes,premature;
Electrocardiography;
Radiofrequencycatheter ablation
- From:
Chinese Journal of Primary Medicine and Pharmacy
2008;15(7):1075-1076
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the electrocardiographic(ECG) characteristics and assess the safety of radiofrequency catheter ablation (RFCA) of ventricular tachyeardia (VT), and frequent ventricular premature con- tractious(VPCs) originating from left ventricular outflow tract(LVOT). Methods Twelve-lead ECG analysis and RFCA were performed in 9 patient with VT or VPCs originating from LVOT. Results The sites to be successfully ablated were in left valsalva sinus in 6 patients,and subaortic valve in 3 patient. ECG revealed tall R wave in leads Ⅱ, Ⅲ ,aVF, V5 and V6. QS morphology in both leads aVR and aVL,QS morphology in lead Ⅰ in most cases. R wave in lead Ⅰ was relative tall, the R/S wave amplitude in lead V1 was over 0.62 ,and precordia R wave transition was irregular. All 9 patients were successfully ablated. No death or recurrenced case during follow-up. Conclusion Ventricular taehycardia and frequent ventricular premature rcontractions originating from left ventricutar outflow tract could be known by some specific ECG characteristics and could be radically treated safely by RFCA.
