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首页> 外文期刊>Journal of cardiovascular electrophysiology >High-density mapping of left atrial endocardial activation during sinus rhythm and coronary sinus pacing in patients with paroxysmal atrial fibrillation.
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High-density mapping of left atrial endocardial activation during sinus rhythm and coronary sinus pacing in patients with paroxysmal atrial fibrillation.

机译：阵发性心房颤动患者窦性心律和冠状窦起搏期间左心内膜激活的高密度图。

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LA Activation Patterns. Introduction: This study was designed to record global high-density maps of left atrial endocardial activation during sinus rhythm and coronary sinus pacing. Method and Results: Noncontact mapping of the left atrium was performed in nine patients with paroxysmal atrial fibrillation undergoing pulmonary vein ablation procedures. High-density isopotential and isochronal activation maps were superimposed on three-dimensional reconstructions of left atrial geometry. Mapping was repeated during pacing from sites within the coronary sinus. Earliest left atrial endocardial activation occurred anterior to the right pulmonary veins in seven patients and on the anterosuperior septum in two patients. A line of conduction block was seen in the posterior wall and inferior septum in all patients. The direction of activation in the left atrial myocardium overlying the coronary sinus was different from the electrogram sequence in the coronary sinus catheter in 6 of 9 patients. During coronary sinus pacing, activation entered the left atrium a mean (SD) of 41 (13) ms after the pacing stimulus at a site 12 (10) mm from the endocardium overlying the pacing electrode. Lines of conduction block were present in the posterior wall and inferior septum. Conclusion: In patients with paroxysmal atrial fibrillation, lines of conduction block are present in the left atrium during sinus rhythm and coronary sinus pacing. Electrograms recorded in the coronary sinus infrequently correspond to the direction of activation in the overlying left atrial myocardium. (J Cardiovasc Electrophysiol, Vol. 15, pp. 1111-1117, October 2004).
机译：洛杉矶激活模式。简介：本研究旨在记录窦性心律和冠状静脉窦起搏期间左心房心内膜激活的全球高密度图。方法和结果：9例阵发性房颤患者接受了肺静脉消融手术，进行了左心房的非接触性测绘。将高密度等势和等时激活图叠加在左心房几何结构的三维重建上。从冠状窦内的部位起搏期间重复进行映射。最早的左心房心内膜激活发生在7例患者的右肺静脉之前，而在2例患者的上隔中。在所有患者的后壁和下隔中均可见到一条传导阻滞。 9名患者中有6名患者的覆盖冠状窦的左心房心肌的激活方向与冠状窦导管中的电描记图顺序不同。在冠状窦起搏期间，起搏刺激在距起搏电极的心内膜12（10）mm处起搏刺激后平均41（13）ms进入左心房。传导阻滞线存在于后壁和下隔中。结论：阵发性房颤患者窦性心律和冠状窦起搏时，左心房存在传导阻滞。冠状窦中记录的心电图很少对应于上方左心房心肌的激活方向。 （J Cardiovasc Electrophysiol，第15卷，第1111-1117页，2004年10月）。

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