特发性室性心动过速QRS波群电轴与成功消融关系的探讨

The Relation Between the QRS Axis in Idiopathic Ventricular Tachycardia andEfficacy of Radiofrequency Ablation

为探讨特发性室性心动过速（ＩＶＴ）体表心电图ＱＲＳ波群电轴与射频消融成败的关系，对２３例ＩＶＴ进行射频消融治疗，其中左室ＩＶＴ１５例、右室ＩＶＴ８例。在左室ＩＶＴ中，１０例ＱＲＳ波群电轴左偏（－８１°±９°）者均消融成功；５例电轴右偏者（＋１１０°～＋２３０°）中只有１例（＋１１０°）消融成功。电轴左偏与电轴右偏患者的消融成功率比较（１０／１５ｖｓ１／５），差异有显著性，Ｐ＜０．０５。在右室ＩＶＴ中，５例电轴正常或轻度右偏患者均消融成功；另３例电轴左偏患者均消融失败。结果提示室性心动过速（ＶＴ）时ＱＲＳ波群电轴对术前判断ＶＴ的起源部位及消融难易程度会有所帮助。

To explore the relation between the QRS axis in idiopathic ventricular tachycardia and efficacy of radiofrequency ablation,15 cases with idiopathic left ventricular tachycardia (ILVT) and 8 cases with idiopathic right ventricular tachycardia (IRVT) were ablated.The results showed that among 11 successfully ablated ILVTs,10 cases had left axis deviation,the QRS axis was -81 °±9 °.4 ILVTs with right axis deviation were failure.The 5 IRVTs ablated successfully had mild right deviation or normal axis and 3 IRVTs with left axis deviation were failure.These results indicated that the QRS axis during ventricular tachycardia may be helpful in predicting the further efficiency of radiofrequency ablation.