Introduction
Ventricular tachycardia (VT) ablation strategies in patients with
structural heart disease (SHD) have significantly evolved during the
last years. Substrate ablation with complete elimination of the
potentially arrhythmogenic substrate has become a standard treatment in
this setting and has been related to better acute success rates and
reduction of VT recurrences during follow-up1-8. This
strategy is usually preferred for patients with hemodynamyic instability
during induced VT, advanced heart failure with poor hemodynamic
condition or non-inducible patients at the time of the procedure.
However, stand-alone substrate ablation has also been advocated as a
first ablation strategy even in the absence of these previous conditions
thus obviating the evaluation of baseline VT inducibility and the
potential utility of VT activation mapping9-13. We
sought to evaluate the role of baseline VT inducibility and the
influence of activation mapping on outcomes in patients with SHD
undergoing VT ablation.