In 1901, William Einthoven, the famous physiologist,  has invented the first electrocardiogram  (ECG) (see image) that enabled him to win The Nobel Prize in 1924. Since then, interpretation of the ECG trace and understanding its normal & abnormal pattern have been considered an efficient diagnostic tool for any physician with any specialty.

This is a presentation for the  1st year medical students. click the image and follow the link.