Figure 2: Approach to Ventricular Tachycardia Ablation.

The approach to VT ablation depends on VT inducibility and haemodynamic stability. Although considerable overlap, patients with mappable VT undergo targeted substrate modification following entrainment-guided ablation. Patients with unmappable VT undergoing limited entrainment (if possible) prior to more extensive substrate ablation. Substrate ablation may be guided by pacemapping, channel assessment and location of late potentials. When possible the core of the VT substrate which houses the machinery for the VT circuit based on entrainment and substrate assessment will be isolated to achieve endpoint beyond non-inducibility.