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 061

ECG 061


Basic rhythm

Sinus rhythm, regular at 100 bpm.

P waves


PR interval

Short (100 ms).


Normal axis and duration. Q wave in I, aVL, V5 and V6; tall R wave predominant in the right precordial leads.

ST segment

Elevated in V2, V3.

T waves

Negative in V3.

QT interval



Short PR interval with small q wave.
Increased amplitude of R wave.


Typical ECG pattern for Duchenne muscular dystrophy.


The short PR interval, the tall R waves in the right precordial leads, the Q waves in I, aVL, V5 and V6 (not symptoms of necrosis) are typical of Duchenne muscular dystrophy.


Various cardiopathy


Reading level

3 / 3