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 134

ECG 134


Basic rhythm

Regular wide QRS complex tachycardia at 200 bpm.

P waves

Presence of P waves dissociated from the QRS complexes, visible in II and aVF.


Normal axis. Conduction delay showing on the right.

T waves

Negative from V1 to V6.

QT interval



QS aspect.
Rigth bundle branch block morphology.
AV dissociation.
Wide QRS complexes tachycardia.


Ventricular tachycardia.


The QRS axis and morphology in the precordial leads (increasing Q wave from V1 to V6, Q wave only in V5 and V6), as well as the A-V dissociation allow a definite diagnosis of ventricular tachycardia.


Wide QRS complex tachycardia


Reading level

2 / 3