The clinical utility of entrainment pacing.

Entrainment mapping is an important concept in electrophysiology that allows clinicians to characterize and treat reentrant arrhythmias. Entrainment mapping has been particularly useful for the treatment of atrial flutter, reentrant atrial tachycardias, and scar-related ventricular tachycardia. In this article, we outline the conduction properties of reentrant rhythms that permit entrainment mapping to be a useful technique. In addition, we highlight the differences between manifest and concealed entrainment. Finally, we describe useful strategies for diagnosing and treating atrial flutter and ventricular tachycardia.