Arrhythmias & electrophysiology
Conduction Velocity Dispersion Predicts Postinfarct Ventricular Tachycardia Circuit Sites and Associates With Lipomatous Metaplasia
Authors' conclusion
Regional CV dispersion more strongly predicts VT circuit sites than repolarization dispersion, and LM is a critical substrate for CV dispersion.
Study context
- Population
- Postinfarct patients with ventricular tachycardia (VT) (CMR, CT and electroanatomic mapping)
- Participants
- 33 patients
- Comparison
- Conduction velocity (CV) dispersion vs repolarization dispersion; Lipomatous metaplasia (LM) vs fibrosis as substrate
- Outcome
- Regional CV dispersion vs ARI dispersion (coefficient of variation (CoV) per AHA segment) as predictors of critical VT sites
Main finding
As reported in the abstract
CV dispersion
0.65
median
Activation recovery interval (ARI) dispersion
0.24
median
P < 0.001
Original publication
Conduction Velocity Dispersion Predicts Postinfarct Ventricular Tachycardia Circuit Sites and Associates With Lipomatous Metaplasia. JACC Clin Electrophysiol. Published 18 May 2023. doi:10.
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