Traditional Electrophysiological Mapping
Technological advances over the last two decades have assisted the electrophysiologist in identifying tachycardia mechanisms and guiding ablation therapy. However, accurate analysis and interpretation of the surface electrocardiogram (ECG) and intracardiac signals remain fundamental to conventional mapping. This chapter details the three maneuvers most commonly employed, usually in combination, including activation sequence mapping, pace mapping, and entrainment. These techniques are essential in any standard electrophysiological study and apply to both focal and reentrant forms of tachycardia. Critical to the effective use of these maneuvers is a clear appreciation of the mechanism of tachycardia which is briefly outlined in this chapter.
KeywordsAtrial Tachycardia Accessory Pathway Reentrant Tachycardia Reentry Circuit Reentry Tachycardia