<unk>  is a medical procedure by which an abnormally fast heart rate (tachycardia) or other cardiac arrhythmia is converted to a normal rhythm using electricity or drugs. Synchronized electrical<unk>  uses a therapeutic dose of electric current to the heart at a specific moment in the cardiac cycle, restoring the activity of the electrical conduction system of the heart. (Defibrillation uses a therapeutic dose of electric current to the heart at a random moment in the cardiac cycle, and is the most effective resuscitation measure for cardiac arrest associated with ventricular fibrillation and pulseless ventricular tachycardia.) Pharmacologic<unk> , also called chemical<unk> , uses antiarrhythmia medication instead of an electrical shock. 'Burn' mark remaining one day after DC electrical<unk>
Cardioversion
Defibrillation
Transcutaneous pacing
Transvenous pacing
Pericardial window
Implantable cardioverter-defibrillator
Extracorporeal cardiopulmonary resuscitation
Cardiopulmonary bypass