I I want to learn ECG from the basic to the core Interpretation of ecg Rhythm Rate Axis Small square ,big squares couting how and with what should we multipy Sinus rhythm Pq waves 1:1ratio Qrs complex narrow and wide Negative and positive deviation Leads placements, v6 where in right or left leg Sinoatrial node These are the few I know but I wanted to know from start to core So teach me
Create a comprehensive ECG study guide PDF I can reference