entrainment mapping
Electrophysiologic technique using pacing to identify critical components of reentrant circuits during arrhythmias.
Full Definition
A sophisticated electrophysiologic mapping technique that involves pacing from multiple sites during ongoing arrhythmia to identify the critical components of reentrant circuits. The technique relies on demonstrating entrainment with concealed fusion, where pacing captures the arrhythmia circuit without changing the surface electrocardiogram morphology. This method is essential for identifying ablation targets in complex arrhythmias, particularly ventricular tachycardia and atrial flutter. Proper documentation requires precise terminology regarding entrainment criteria, post-pacing intervals, and stimulus-to-QRS timing.
Usage
Usage note: Always specify whether entrainment shows concealed or manifest fusion in documentation.
In Context
- "Entrainment mapping confirmed the critical isthmus for successful ablation targeting." — EP procedure note
- "The arrhythmia demonstrated entrainment with concealed fusion from the anterior wall." — Mapping system report