ECG analysis during CPR is focused on differentiating three major types of arrest rhythms:

a) Asystole, Bradycardia, Tachycardia
b) Ventricular Fibrillation, Pulseless Ventricular Tachycardia, Pulseless Electrical Activity
c) Atrial Fibrillation, Supraventricular Tachycardia, Atrial Flutter
d) Sinus Rhythm, Sinus Bradycardia, Sinus Tachycardia