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目的:观察右心室流出道室性心律失常(RVOT-PVC/VT)消融靶点的三维分布规律。方法:60例右心室流出道室性心律失常消融术中,在EnSite-Array非接触标测系统指导下构建右心室流出道三维模型,以心内膜最早激动点设为靶点,以射频消融结果加以证实,观察靶点三维分布。结果:消融靶点在右心室流出道肺动脉瓣下的49例均消融成功,其中17例分布在游离壁,32例分布在间隔部;15例分布在上部,34例分布在下部;30例分布在前部,19例分布在后部。消融靶点分布于肺动脉瓣上11例,9例消融成功。结论:非接触标测系统有助于确定右心室流出道室性心律失常消融靶点的位置。
OBJECTIVE: To observe the three-dimensional distribution of RVOT-PVC / VT ablation target in right ventricular outflow tract. Methods: A total of 60 right ventricular outflow ventricular arrhythmia ablation, under the guidance of EnSite-Array non-contact mapping system to build a three-dimensional model of right ventricular outflow tract, the earliest endocardial endocardial activation as a target point to radiofrequency ablation The results were confirmed by observation of the three-dimensional distribution of the target. Results: The ablation target was successfully ablated in 49 cases under the right ventricular outflow tract pulmonary valve, among which 17 cases were located in the free wall and 32 cases were located in the interval. 15 cases were in the upper part, 34 cases in the lower part and 30 cases in the distribution In the anterior part, 19 cases are located in the posterior part. Ablation target located in the pulmonary valve in 11 cases, 9 cases of ablation success. Conclusion: The non-contact mapping system helps to determine the location of the ventricular arrhythmia ablation target in the right ventricular outflow tract.