A Study to Evaluate the Effect of Vagus Nerve Stimulation in Patients Undergoing VT Ablation

Exclusion Criteria

• •Active ongoing cardiac ischemia as assessed by: ECG, cardiac enzymes, symptoms, coronary angiography with evidence of significant epicardial coronary stenosis (\>70%), or stress testing. (Note: positive troponin assay due to Internal Cardiac Defibrillator (ICD) shocks is not an exclusion criterion).
• •Status post orthotopic heart transplantation
• •Women who are pregnant (as evidenced by pregnancy test if pre-menopausal).
• •Unable or unwilling to comply with protocol requirements.
• •Known channelopathy such as long QT syndrome, Brugada syndrome, and catecholaminergic polymorphic VT.
• •Known peripheral neuropathy or history of autonomic dysfunction due to non-cardiac causes.
• •New York Heart Association Class IV heart failure or use of current vasopressor medications
• •Incessant VT
• •Persistent atrial fibrillation
• •Frequent premature atrial or ventricular contractions
• •Inability to give informed consent.