Maruyama Mitsunori, Ino Takeshi, Miyamoto Shinjiro, Tadera Takeshi, Atarashi Hirotsugu, Kishida Hiroshi
Department of Internal Medicine and Cardiology, Tama-Nagayama Hospital, Nippon Medical School, Tokyo, Japan.
J Electrocardiol. 2003 Jan;36(1):53-7. doi: 10.1054/jelc.2003.50004.
We sought to characterize the electrical activity within the persistent left superior vena cava (LSVC), which normally becomes the ligament of Marshall (LOM) that is known to be related to the genesis of atrial tachyarrhythmias. A 20-pole electrode catheter was used to record the entire activation sequence in the LSVC in a patient with Wolff-Parkinson-White syndrome. Electrical activity representing the musculature of the LSVC could be recorded up to a level as high as the pulmonary artery. Multiple electrical connections between the LSVC and left atrium were shown, and one of the connections exhibited unidirectional conduction block. It might be important to take into account the presence of multiple electrical connections when we consider the LOM as a target for radiofrequency catheter ablation or its role in clinical arrhythmias.
我们试图描述持续存在的左上腔静脉（LSVC）内的电活动，该静脉通常会形成马歇尔韧带（LOM），已知其与房性快速性心律失常的发生有关。使用一根20极电极导管记录了一名患有预激综合征患者的LSVC内的整个激动顺序。可记录到代表LSVC肌肉组织的电活动，其高度可达肺动脉水平。显示了LSVC与左心房之间存在多个电连接，其中一个连接表现出单向传导阻滞。当我们将LOM视为射频导管消融的靶点或其在临床心律失常中的作用时，考虑到多个电连接的存在可能很重要。
