Tada Hiroshi, Naito Shigeto, Asakawa Tetsuya, Taniguchi Koichi
Division of Cardiology, Gunma Prefectural Cardiovascular Center, Maebashi, Gunma, Japan.
J Interv Card Electrophysiol. 2004 Feb;10(1):73-7. doi: 10.1023/B:JICE.0000011488.02388.55.
We describe a patient with drug-resistant, paroxysmal atrial fibrillation who underwent segmental pulmonary vein (PV) isolation. After complete isolation of the right superior PV, a persistent regular tachycardia was recorded within the vein. A tachycardia focus with a cycle length of 114 ms was found 2.5 cm away from the ostium of the PV. The cycle lengths of the PV tachycardia near the ostium and near the focus were 400 ms and 200 ms, respectively, which indicates the presence of a 2:1 exit block within the vein. This PV tachycardia was completely eliminated with the application of radiofrequency energy at the focus.
我们描述了一名患有耐药性阵发性心房颤动的患者，该患者接受了节段性肺静脉（PV）隔离术。在右上肺静脉完全隔离后，在静脉内记录到持续性规则性心动过速。在距肺静脉开口2.5厘米处发现一个心动过速起源点，其周期长度为114毫秒。靠近开口处和靠近起源点的肺静脉心动过速的周期长度分别为400毫秒和200毫秒，这表明静脉内存在2:1传出阻滞。通过在起源点施加射频能量，这种肺静脉心动过速被完全消除。
