Key result
An R wave amplitude ≤30% of the QRS amplitude in V2 predicted an RVOT origin for idiopathic ventricular tachycardia with a positive predictive value of 95% and negative predictive value of 100%.
Why the study?
Does electrocardiographic pattern analysis predict the origin of idiopathic ventricular tachycardia and the success of right heart radiofrequency ablation in patients referred for ablation?
Population
25 consecutive patients referred for radiofrequency ablation of idiopathic ventricular tachycardia or…
Design
Cohort
Authors
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May aid ablation site selection in idiopathic VT; leaves open prospective validation before clinical adoption.
Observational (n=25)
Does electrocardiographic pattern analysis predict the origin of idiopathic ventricular tachycardia and the success of right heart radiofrequency ablation in patients referred for ablation?
Effect estimate: PPV 95%, NPV 100%
Simple ECG criteria, specifically an R wave amplitude ≤30% of the QRS amplitude in lead V2, can highly accurately predict an RVOT origin for idiopathic VT and a high likelihood of successful right-sided ablation.
Tanner et al. (2004) conducted an observational in Idiopathic ventricular tachycardia or severely symptomatic idiopathic ventricular premature contractions (n=25). ECG pattern analysis (R wave amplitude ≤30% of QRS amplitude in V2) was evaluated on RVOT origin of ventricular tachycardia (PPV 95%, NPV 100%). An R wave amplitude ≤30% of the QRS amplitude in V2 predicted an RVOT origin for idiopathic ventricular tachycardia with a positive predictive value of 95% and negative predictive value of 100%.
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