Final answer:
Treating ARVC and RVOT VT typically starts with antiarrhythmic drugs, beta-blockers or calcium channel blockers, and may include an EPS to evaluate the need for catheter ablation or ICD therapy, considering the role of the right heart structures and electrical conduction system.
Step-by-step explanation:
The first line for treating Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC) and Right Ventricular Outflow Tract (RVOT) Ventricular Tachycardia (VT) involves the use of antiarrhythmic drugs. Specific treatment can vary, but it often includes medications like beta-blockers and calcium channel blockers. In some cases, an electrophysiologic study (EPS) may be conducted to assess the need for catheter ablation or implantable cardioverter-defibrillator (ICD) therapy. Understanding how these treatments relate to the cardiac structures and functions involved, such as the right atrium, fossa ovalis, tricuspid valve, right ventricle, and the atrioventricular node, as well as the cardiac electrical conduction system including the atrioventricular bundle (Bundle of His), bundle branches, and Purkinje fibers, is crucial for managing ARVC and RVOT VT.