After completing this course, you will be able to

  • Measure intervals and amplitudes on the ECG.
  • Diagnose right and left ventricular hyperthrophy, ST depression and T negativity, myocardial infarction, atrial hypertrophy and atrial enlargement.
  • Identify high degree AV block and different forms of blocks.
  • Evaluate the ST segment and ST elevation myocardial infarction.
  • Recognize electrolyte disturbances.

What our students think

Super!! I have no words! I am ashamed to say that this is the first explanation about the leads which I can fully understand without any need to refer to another source. Great work! I completed medical university many years ago but still had difficulties understanding the leads. I didn't have time to look properly into the topic and didn't have a good explanation source. The Yellow Belt section is a real treasure for those who don't have time for long educational activities, because it gives them a confidence within no time! It's amazing how this confidence is growing each day! Thank you for your great work, your team is bringing a real help to the medical society. You did it all. Thanks a lot.
Lola Rakhimdjanova, MD
Level 1

The ECG curve

This basic module breaks down the components of the ECG tracing so you can understand more advanced concepts of electrocardiography. The ABCs of ECGs.
1 Lesson (10m 32s)
Level 2


In this level you learn how to measure intervals and amplitudes on the ECG. No need to carry a ruler with you! Counting and some simple math is all you need.
1 Lesson (5m 35s)
Level 3

Interpretation of durations

In this module, you learn what it means when intervals and amplitudes are off. There are only a few concepts you need to understand.
1 Lesson (6m 50s)
Level 4

The precordial leads

This level introduces you to the precordial leads and which areas of the heart they depict. It will pay off later to drill down into these important basics now!
1 Lesson (14m 36s), 1 Quiz
Level 5

The precordial leads advanced

Here you learn several important pearls and pitfalls regarding the precordial leads. We also introduce you to the nuts and bolts of bundle branch block.
1 Lesson (8m 00s)
Level 6

Ventricular hypertrophy

The assessment of ventricular hypertrophy can seem complicated. After attending this module, you will be able to diagnose right and left ventricular hypertrophy like a pro.
1 Lesson (8m 36s)
Level 7

ST depression and T negativity

In this level, you get an easy-to-understand introduction to ST depression and T negativity. This module is so essential, even savvy ECGologists will find it useful!
1 Lesson (6m 59s)
Level 8

Introduction to myocardial infarction

Whatever your field of expertise might be, this module on diagnosing myocardial infarction is one you absolutely, positively don’t want to miss.
2 Lessons (20m 22s)
Level 9

Inferior wall myocardial infarction

Recognizing inferior wall myocardial infarction can be tricky. Here you learn what it takes to become great at it. Also, you’ll meet our cookbook: a step-by-step approach to evaluating any ECG.
1 Lesson (10m 02s)
Level 10

Mastering the ST segment

This module will turn you into an expert at evaluating the ST segment and ST elevation myocardial infarction. Becoming intimate with the ST segment will help you save lives!
1 Lesson (14m 43s)
Level 11

Cardiac axis, atrial hypertrophy, and low voltage

The evaluation of the cardiac axis is easier than it seems. But let’s be honest, the cardiac axis is not very useful in most cases. We’ll teach you when knowledge of the axis really makes a difference. Furthermore we’ll teach you how to diagnose atrial hypertrophy and atrial enlargement on the ECG...some underrated skills that can come in handy in certain situations.
2 Lessons (23m 12s)
Level 12


Certain electrolyte disturbances can be suspected just by looking at the ECG. In this module, we’ll teach you what to look for.
1 Lesson (9m 06s)
Level 13

Normal sinus rhythm

Up until this point, rhythmology has not been touched upon in the Yellow Belt. In this module, we’ll teach you the criteria of normal sinus rhythm.
1 Lesson (4m 20s)