Entrainment mapping: Theoretical considerations and practical implementation

Entrainment mapping enables the diagnosis and characterization of reentrant arrhythmias from analysis of the specific interaction between pacing maneuvers and tachycardia. Described 40 years ago, the implementation and interpretation of pacing maneuvers to entrain tachycardias has evolved into an indispensible tool for diagnosis and mapping reentrant cardiac arrhythmias. For complex reentry pathways entrainment mapping allows determination of the relation of pacing sites to the reentry circuit and discrimination relevant reentry parts from bystander areas. Careful interpretation is needed to recognize misleading findings. The general physiology of reentry, and the application, interpretation, limitations and pitfalls of entrainment maneuvers used for cardiac mapping is reviewed. This article is protected by copyright. All rights reserved