最终消融靶点位于左后间隔的B型预激综合征患者体表心电图的特征

Features of surface electrocardiogram of final ablation target at left posterior septal in patients with type B Wolff-Parkinson-White syndrome

目的:探讨体表心电图提示右后间隔旁道,而最终消融靶点在左后间隔的预激(WPW)综合征患者体表心电图特征。方法:WPW综合征患者37例,经心内电生理标测到最佳消融靶点位于左后间隔(A组)9例,右后间隔(B组)28例;体表心电图的监测项目包括:①δ波40ms时方向。②V1导联δ波时间。③V1导联波型(rS或QS)。④Ⅱ、V1～V6导联的T波方向。结果:A组V1～V6导联T波正向的个数多(t=3.423,P<0.001),V1导联呈rS波型多(P=0.024),患者首次发作室上性心动过速的年龄较大。结论:在B型WPW综合征患者的体表心电图上,V1～V6导联T波正向的个数多、V1导联呈rS波型,左后间隔旁道的可能性大。

Aim： To find out the features of surface electrocardiogram（ECG） firstly suggesting right posterior septal（RPS） accessory pathway in patients with Wolff-Parkinson-White（WPW） syndrome,but final ablation target at left posterior septal（LPS） .Methods： A total of 37 patients were divided into LPS（group A,n=9 ） and RPS （group B, n=28 ） by radiofrequency catheter ablation.The parameters of surface ECG examination included δ wave＇s direction at 40 ms; δ wave＇s time in V1; wave shape in V1（rS or QS） ; T wave＇s direction in Ⅱ,V1～V6.Results： Compared with group B,T wave positive in V1～V6 and rS wave in V1 in group A were significantly more（P=0.024 ） .Conclusion： In surface ECG of patients with type B WPW syndrome,more T wave positive in V1～V6 and rS wave in V1 suggest larger probability of LPS.