Nademanee K, Kosar E M
Department of Medicine, University of Southern California School of Medicine, Los Angeles, USA.
Pacing Clin Electrophysiol. 1998 Jul;21(7):1442-7. doi: 10.1111/j.1540-8159.1998.tb00216.x.
The recent introduction of a nonfluoroscopic electroanatomical cardiac mapping system (CARTO) is an exciting development in catheter ablation treatment of cardiac arrhythmias. The system uses ultralow magnetic fields to locate a sensor positioned near the tip of a regular mapping and ablation catheter. The catheter location and electrograms are recorded and reconstructed in real-time and presented as a three-dimensional geometrical mapped color coded with the electrophysiological information. The CARTO represents an important tool to guide the ablation of patients who have focal tachycardia (e.g., right ventricular outflow tract [RVOT] tachycardia and idiopathic left ventricular [ILV] tachycardia). This study describes how the CARTO system is useful in mapping and ablating these arrhythmias. Two case illustrations, one patient with RVOT tachycardia and another with ILV tachycardia, are described in this article. The tachycardia was mapped and ablated using the new electromagnetic catheter technology creating an electroanatomical map of the arrhythmia focus for each tachycardia without fluoroscopy; both tachycardias were successfully ablated, terminated, and rendered noninducible. The CARTO system is useful in mapping and guiding the ablation of focal tachycardia and merits further study.
最近引入的非荧光透视电解剖心脏标测系统（CARTO）是心律失常导管消融治疗领域一项令人兴奋的进展。该系统利用超低磁场来定位位于常规标测和消融导管尖端附近的传感器。导管位置和心内电图被实时记录和重建，并呈现为一个三维几何标测图，根据电生理信息进行颜色编码。CARTO是指导局灶性心动过速（如右心室流出道[RVOT]心动过速和特发性左心室[ILV]心动过速）患者进行消融的重要工具。本研究描述了CARTO系统在这些心律失常的标测和消融中如何发挥作用。本文介绍了两个病例，一例为RVOT心动过速患者，另一例为ILV心动过速患者。使用新的电磁导管技术对心动过速进行标测和消融，无需荧光透视即可为每种心动过速创建心律失常起源点的电解剖图；两种心动过速均成功消融、终止且不再能被诱发。CARTO系统在局灶性心动过速的标测和指导消融方面很有用，值得进一步研究。
