Lesson Eighty-five Electrocardiographic and electrophysiological characteristics of atrial tachycardia with early activation close to the his-bundle

最早激动位于希氏束区的房性心动过速,起源于心房间隔旁区上方,即位于前上间隔右心房侧、前上间隔左心房侧和主动脉无冠窦之间的空间,相对罕见,已有经主动脉无冠窦、右心房上间隔、希氏束后方、或左心房前间隔的成功消融.然而,在现有的心电图诊断规则上,缺乏有关这组房性心动过速特异P波形态的阐述.因此,本研究的目的是：（1）确定12导联心电图上的P波形态;（2）分析最早激动位于希氏束区的房性心动过速的腔内电图.

Atrial tachycardia（AT）with earliest activation inthe area of the His-bundle, suggesting an origin fromthe superior paraseptal area of the atria, in the spacedelineated between the anterior supero-septal rightatrium （RA） , the anterior supero-septal left atrium（LA） , and the noncoronary aortic cusp1（NCC） , isrelatively rare, and successful ablation has beenachieved from the NCC, the supero-septal aspect of theRA, posterior to the His-bundle, or from theantero-septal part of the LA.