Multiple forms of heart arrhythmias exist including atrial fibrillation, atrial tachycardia, supraventricular tachycardia (SVT) and ventricular tachycardia. This conditions may often be diagnosed with an ECG (electrical reading of the heart), 24 hour ECG (Holter monitor) or event recorder. Echocardiography and cardiac CT can sometimes help to diagnose the underlying cause …