Top ECG (EKG) heart rhythms you'll want to know for nursing school, nursing, and other healthcare professions. Here is a quick glance of the major heart ECG rhythms, along with a brief summary of each rhythm. These include normal sinus rhythm, sinus tachycardia, sinus bradycardia, atrial fibrillation, atrial flutter, ventricular fibrillation, ventricular tachycardia, Torsages de Pointes, first-degree heart block, second-degree heart block, third-degree heart block, asystole, and pulseless