Coronary venous mapping can identify intramural substrates and guide selective therapies like double-balloon-assisted ethanol ablation when conventional endocardial ablation fails.
Case Report
Coronary venous mapping and double-balloon-assisted ethanol ablation offer a viable therapeutic strategy for complex intramural ventricular arrhythmias when conventional endocardial ablation is unsuccessful.
Intramural ventricular arrhythmia with preferential conduction can be difficult to ablate because the breakout site from the conduction pathway may be remote from the true site of origin, leading to misleading electrocardiographic and endocardial mapping findings. Coronary venous mapping can identify intramural substrates and guide selective therapies, such as double-balloon-assisted ethanol ablation, when conventional endocardial ablation fails.
Maeda et al. (Sun,) conducted a case report in Intramural outflow tract ventricular arrhythmia. Coronary venous mapping and double-balloon-assisted ethanol ablation vs. Conventional endocardial ablation was evaluated. Coronary venous mapping can identify intramural substrates and guide selective therapies like double-balloon-assisted ethanol ablation when conventional endocardial ablation fails.