假性deta波时限在室性期前收缩中的诊断价值

目的： 探讨假性deta波（PdW）时限在不同位置的室性期前收缩中的诊断价值。 方法： 对97 例接受射频导管消融治疗患者的临床及电生理资料进行回顾性分析，比较不同位置室性期前收缩PdW的时限。结果： ①起源部位分布：13例（占13.4%）起源于左心室心内膜，52 例（占53.6%）起源于右心室心内膜，27 例（占27.8%）起源于主动脉窦，5例（占5.1%）起源于心大静脉。②4组不同有效靶点室性期前收缩的PdW时限差异均有统计学意义（均P＜0.05），2组心外膜（主动脉窦和心大静脉）起源的室性期前收缩的PdW时限差异有统计学意义（ P＜0.05）。按照起源部位将室性期前收缩分为心内膜和心外膜起源，其PdW的时限差异有统计学意义（ P＜0.05）。 结论： 通过比较PdW的时限，可以区分心内膜和心外膜以及主动脉窦和心大静脉起源的室性期前收缩。

The value of the pseudo deta wave (PdW) in the diagnosis of premature ventricular contractions

Objective: To assess the value of the pseudo deta wave (PdW) in the diagnosis of different positions of premature ventricular contractions (PVCs). Methods: The radiofrequency ablation were performed.Then the length of the PdW in different positions of PVCs in totally 97 patients with PVCs was measured. Results: ①The originating of PVCs: In 13 cases it was originating from the endocardium of the left ventricle. In 52 cases it was originating from the endocardium of the right ventricle. In 27 cases it was originating from the aortic sinus. In 5 cases it was from the great cardiac vein. ②The length of the PdW in the 4 groups was different (P<0.05). The length of the PdW from the sinus of valsalva and great cardia vein was different (P<0.05).The length of the PdW from the endocardium and epicardium according to the position of the originating site was different (P<0.05). Conclusion: The length of the PdW can be used in indentifying PVCs not only arising from the endocardium and epicardium, but also arising from the sinus of valsalva and great cardia vein.