Life threatening arrhythmias are those arrhythmias which arise from the lower chambers of the heart. Dr. Aparna Jaswal, Cardiologist, Fortis Escorts Heart Institute will talk about these life threatening arrhythmias. She talks about ventricular tachychardia when associated with structural heart disease or ventricular fibrillation can be life threatening. Ventricular arrhythmias are potentially life threatening and needs immediate treatment in ICU with the electrolyte correction and external defibrillator.