Collision Mapping
Mapping technique using simultaneous pacing from multiple sites to identify conduction pathways and barriers.
Full Definition
Collision mapping is an advanced electrophysiological mapping technique that involves simultaneous or near-simultaneous pacing from multiple cardiac sites to identify conduction pathways, anatomical barriers, and functional blocks. When two wavefronts collide, they annihilate each other, creating a characteristic pattern that helps define the cardiac substrate. This technique is particularly useful for identifying protected isthmuses in ventricular tachycardia circuits and for confirming complete linear ablation lesions. Collision mapping provides detailed information about conduction properties that cannot be obtained from conventional activation mapping.
Usage
Usage note: Requires precise timing coordination between multiple pacing sites. Advanced mapping technique.
In Context
- "Collision mapping confirmed the presence of a functional line of block separating two conducting channels." — Substrate analysis
- "The collision zone identified during dual-site pacing revealed the location of the critical isthmus." — VT study report