Putting a new spin on the sphere: Use of a spherical dual-energy lattice-tip system for accessory pathway mapping and ablation

Pulsed field ablation (PFA), a non-thermal energy source, ablates tissue using microsecond pulses of electric fields to destabilize cell membranes.1 Providing a favorable efficiency and safety profile, PFA is rapidly gaining traction in catheter ablation of atrial fibrillation (AF). The most common PFA system in clinical use is a multielectrode pentaspline catheter designed specifically to facilitate ‘single-shot’ pulmonary vein isolation (PVI).2 Although this system has been shown to improve safety and efficacy of AF ablation, reduce procedure times, and enhance lesion durability,2 its large footprint renders it suboptimal for achieving ablation of focal extra-PVI triggers and its electrode spacing is less well-suited for high-density mapping.