Key result
VTs originating from the epicardium had significantly longer far-field VEGM duration compared to those from the endocardium (240 ± 49 ms vs 153 ± 45 ms; P=0.002).
Why the study?
It was not fully examined whether ventricular intracardiac electrograms recorded from an ICD via telemetry can determine the origin of ventricular tachycardia.
Can ventricular intracardiac electrograms recorded from an ICD predict the epicardial origin of ventricular tachycardia?
Population
15 patients with an ICD and 23 induced VTs with detected sites of origin
Design
Observational study
Authors
Loading...
Far-field ICD electrograms may differentiate epicardial VT origin; hypothesis-generating and requires prospective validation before clinical adoption.
Observational (n=46)
Can ventricular intracardiac electrograms recorded from an ICD predict the epicardial origin of ventricular tachycardia?
Absolute Event Rate: 240% vs 153%
p-value: p=0.002
Far-field ventricular intracardiac electrograms recorded via ICD telemetry can help differentiate epicardial from endocardial origins of ventricular tachycardia prior to ablation.
Kawamura et al. (2019) conducted an observational in Ventricular tachycardia in patients with an implantable cardioverter defibrillator (n=46). Epicardial origin of VT vs. Endocardial origin of VT was evaluated on VEGM duration in far-field EGM (p=0.002). VTs originating from the epicardium had significantly longer far-field VEGM duration compared to those from the endocardium (240 ± 49 ms vs 153 ± 45 ms; P=0.002).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: