BASICS OF ECG AND EVOLUTION OF MI IN ECG !!!

Here are  basics of how ECG is done with leads placement and the recording of various waves in an ECG  recording.

1.Lead placement 

2. Electrical activity of the heart

3. various waves in ECG

4. Changes in ECG with evolution of MI

Hope the images gave a GOOD OVERVIEW OF ECG. please ask questions in the comment box below.