High-density activation maps during complex ARTs are challenging to interpret because they include the activation patterns of active and passive circuits. Entrainment mapping provides the identification of the active tachycardia circuit. However, current electroanatomic mapping systems are not capable of color-coding the information obtained from entrainment maneuvers.

Editor-in-Chief
David J. Wilber, MD, FACC

CME Editor
Smit Vasaiwala, MD

Author
Concepción Alonso-Martín, MD, PHD

CME/MOC/ECME Information
Target Audience
JACC Journal CME/MOC/ECME is intended for physicians who treat patients with cardiovascular disease.

Important Dates
Date of Release: May 18, 2020
Term of Approval/Date of CME/MOC/ECME Expiration: May 17, 2021

Learner Objectives
After reading this article the reader should be able to:

• Identify the active circuit responsible of complex atrial re-entrant tachycardias.
• Use and interpret entrainment as a standard useful maneuver in electrophysiology.

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