Precise understanding of arrhythmia mechanisms in the EP lab depends on high-quality Cardiac Electrophysiology Mapping. This session delves into activation, voltage, and entrainment mapping techniques that allow electrophysiologists to visualize circuits, locate critical isthmuses, and target ablation with millimeter-level accuracy. Participants will explore how mapping data are acquired, processed, and displayed by modern systems, and how to interpret complex maps in atrial and ventricular arrhythmias. The focus is on translating mapping information into clear procedural strategies that improve efficiency and outcomes.

With rapidly advancing technologies, many practitioners attend a cardiology conference to keep pace with 3D systems, high-density catheters, and novel algorithms. This session explains how to construct chamber geometry, select reference points, and avoid common artifacts that can mislead interpretation. Attendees will see how mapping approaches differ between focal arrhythmias, macro–re-entrant circuits like atrial flutter, and scar-related ventricular tachycardia. Real cases will illustrate stepwise map refinement—from initial acquisition to final confirmation of ablation success—highlighting how to adjust techniques when arrhythmias are unstable or non-sustained.

A key emphasis is on integrating 3D EP mapping with clinical context and other data sources. Participants will learn how to fuse CT or MRI anatomy with electroanatomic maps, use intracardiac echocardiography for catheter guidance, and correlate substrate maps with prior infarction or cardiomyopathy. The session discusses the role of mapping in repeat ablation for AF or VT, where prior lesion sets and scar patterns must be understood to close conduction gaps. Guidance is also provided on workflow optimization, including team roles, data storage, and the use of mapping libraries for teaching and quality review.

Emerging directions such as noninvasive ECG imaging, ripple mapping, and automated driver detection will also be covered, along with their current evidence base. By the end, attendees will be better equipped to design mapping strategies tailored to each arrhythmia, interpret maps critically, and communicate findings clearly to colleagues and trainees.