The electrocardiogram is one of the most important diagnostic tools in acute medicine. In this course, we use straightforward language and graphics to explain in simple terms how the normal ECG readout is generated and presented. We then go on to explain how the ECG is used to diagnose diseases of the heart. As indicated in the links above, the course is divided into 5 sections; the normal ECG, Axis and Chambers, MI and ischemia, Arrhythmias and Miscellaneous. These sections should be studied in that order. Each of the 5 sections is further divided into a small number of videos. The videos in each section combine to form a single lecture and again should be viewed in the order indicated. At the end of each section there are a series of simple tests which are designed to consolidate the knowledge you will have acquired. These tests should be completed before moving on to the next section.