General purpose of this lecture is to presentation on ECG Rhythm Interpretation. Here briefly focus on to recognize the normal rhythm of the heart “Normal Sinus Rhythm” and to recognize the 13 most common rhythm disturbances. Lecture also discuss on how to Analyze a Rhythm, normal Sinus Rhythm, heart Arrhythmias and advanced 12-Lead Interpretation. Finally explain on Normal Impulse Conduction and Pacemakers of the Heart. Under the Pacemakers of the Heart here is discuss on SA Node, AV Node and Ventricular cells, this helps when calculating the heart rate.