Bundle Branch Reentry Ventricular Tachycardia (BBRVT)

Patients with bundle branch reentry ventricular tachycardia (BBRVT) or interfascicular reentry, commonly associated with underlying structural heart diseases (such as dilated cardiomyopathy, coronary artery disease, valvular heart disease, muscular dystrophy, congenital heart disease, left ventricular noncompaction, endomyocardial fibrosis, right ventricular cardiomyopathy, or Chagas disease), left ventricular assist devices, or isolated His-Purkinje system conduction disturbances without structural heart disease.

Catheter ablation targeting the His-Purkinje system: right bundle branch (RBB) ablation as first-line therapy, or alternative strategies targeting the left bundle branch (LBB), left anterior/posterior fascicles, or the distal Purkinje network, alongside consideration of device therapy (permanent pacemaker, implantable cardioverter-defibrillator [ICD], or cardiac resynchronization therapy [CRT]).