Functional Substrate-Only Guided VT Ablation

In this arm, invasive maps will be constructed by annotating the latest deflection and peak frequency during voltage mapping of stable intrinsic rhythm to localize areas of slow conduction. Annotated algorithms are cleared by the FDA. No VT will be purposefully induced in this experimental arm.

Conventional invasive scar (voltage) and electrical VT (entrainment, activation, pace) mapping will be used to guide VT ablation. Functional substrate mapping will not be used in this arm. VT will be induced using standard protocols.