Three-dimensional mapping systems, particularly non-contact mapping, provide detailed anatomical and activation data that improve the ablation of complex, non-sustained, or polymorphic tachyarrhythmias.
3-D mapping systems, particularly non-contact mapping, enhance the efficacy and safety of catheter ablation for complex and hemodynamically unstable arrhythmias.
The evolution of 3-dimensional (D) mapping systems has contributed to improved procedures for ablation of complex tachyarrhythmia in terms of providing detailed anatomical information along with the ability to integrate with pre-acquired computed tomography/magnetic resonance imaging/intracardiac echocardiography images, reducing the radiation exposure, and producing activation and substrate maps. 3-D mapping systems are categorized as magnetic based vs. impedance based according to the catheter location technology, and are also classified as contact based vs. non-contact based according to the data collection technology. Contact-based mapping systems are used widely, in which a series of electrograms is taken sequentially in contact with the heart, thus requiring a relatively stable and sustained arrhythmia to create an activation map. Non-contact mapping systems, however, allow a beat-to-beat analysis of the activation even in non-sustained, polymorphic, or hemodynamically intolerant tachycardia. In this article, the clinical utility of 3-D mapping systems is discussed based on the literature and on experience, with particular emphasis on the non-contact mapping system.
Takeshi Tsuchiya (Sun,) conducted a review in Cardiac Arrhythmias. 3-Dimensional Mapping Systems was evaluated. Three-dimensional mapping systems, particularly non-contact mapping, provide detailed anatomical and activation data that improve the ablation of complex, non-sustained, or polymorphic tachyarrhythmias.
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