Radiofrequency ablation for cardiac tachyarrhythmias: principles and utility of 3D mapping systems

摘要

Radiofrequency ablation for cardiac tachyarrhythmias is one of the most innovative achievements in cardiology. The ability to 'cure' a potentially fatal condition rather than palliate, as in most chronic diseases, is perhaps the underlying factor that gives it the novelty. The field has grown tremendously within a short span of 25 years. The concept of three-dimensional electro anatomic mapping, wherein a 3D geometry of the chamber(s) is made and then contact mapping done to show the location and electrical activity at the same place is a remarkable advancement. Such three-dimensional mapping can now be integrated to MRI/CT images on which electrical signals can be anatomically marked. This article addresses the technology behind these systems as well as its clinical application. This may interest the basic scientists who after understanding its advantages and limitations can then focus on evolving newer strategies.