ECG Directory

Welcome to this interactive ECG course.

Although it is one of the oldest paraclinic exams, dating back to the late 19th century, the ECG is still of crucial clinical use. This examination often still poses problems of interpretation to the medical practitioner.

This course aims to help the student, the practicing physician and even the trained cardiologist to improve his knowledge in electrocardiography. It consists of 250 traces of varying complexity with a description of each one by experts. This allows the reader to compare his analysis with that of the experts. In addition, the areas of interest of the ECG can be activated to be clearly highlighted.

We hope that these plots will be useful to readers and will improve their knowledge.

The ECGs are available sorted by keywords and categories.

ECG 073

ECG 073


Basic rhythm

Sinus rhythm at 95 bpm.

P waves


PR interval



Micropotentials in all parts of the trace. Delayed R wave progression.

ST segment, T waves

Widespread non-specific changes in the terminal phase.

QT interval



No R wave progression.


Pericardial effusion.


The differential diagnosis for micropotentials consists principally of pericardial effusion, severe chronic pulmonary obstructive disease, infiltrative cardiomyopathy, morbid obesity, pectus excavatum and myxoedema. The pericardial effusion must be relatively significant in order to reduce the amplitude of the QRS complex.


Various cardiopathy


Reading level

1 / 3