The Aronis Lab develops and refines catheter-based, surgical, and computational strategies to treat the most complex arrhythmias in patients with congenital and acquired structural heart disease—hearts whose distorted anatomy, surgical scar, and limited vascular access place them beyond the reach of conventional electrophysiology. Our mission is to make ablation and device therapy in these patients safer, more durable, and individualized, and to generate the outcomes evidence this historically understudied population has lacked. The lab integrates clinical research, procedural innovation, advanced imaging, and computational modeling, and works closely with the Johns Hopkins adult congenital heart disease, cardiac surgery, cardiac anesthesiology, and biomedical engineering teams.