Thoraxcenter Erasmus MC, Thoraxcenter, Rotterdam, The Netherlands.
J Cardiovasc Electrophysiol. 2011 May;22(5):587-9. doi: 10.1111/j.1540-8167.2010.01893.x. Epub 2010 Aug 31.
We present a unique case where early proarrhythmic and late antiarrhythmic characteristics of interatrial conduction delay were observed during the long-term progression of HCM. Occurrence of AT constantly increased as the interatrial conduction delay became more prominent, while the P-wave width in sinus rhythm and the AT cycle length both showed an instantaneous increase in parallel. As the interatrial delay reached a critical point, the right and left atrial P-wave became virtually separated, as demonstrated by the findings of ECGs and echocardiography. This phenomenon resulted in the complete cessation of tachycardias.
我们呈现了一个独特的病例，在 HCM 的长期进展过程中观察到了房内传导延迟的早期致心律失常和晚期抗心律失常特征。随着房内传导延迟变得更加明显，房性期前收缩的发生频率不断增加，而窦性节律时的 P 波宽度和房性期前收缩周期长度都呈平行的瞬时增加。随着房内延迟达到临界点，左右心房的 P 波几乎分离，心电图和超声心动图的结果证实了这一点。这种现象导致心动过速完全停止。
