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 176

ECG 176


Baseline rhythm

Broad complex tachycardia at 150 bpm.P-waves: visible and normal on the tracing on the left.PR interval: normal.QRS: normal when it follows a P-wave. Then broad at 160 ms. RBBB morphology. Positive concordance in the precordial leads.ST segment: depressed in the precordial leads.T-waves: negative from V1 to V6.QT interval: normal.


Fusion beat.
A-V dissociation.
Wide QRS tachycardia with Q wave > 40 ms.


Ventricular tachycardia


We see a single normal QRS complex which follows a P-wave. After this, there is a fusion beat and then a broad complex tachycardia with positive concordance in the precordial leads is initiated. There is also A-V dissociation. Finally, the morphology of the QRS complex in aVR is that of a ventricular tachycardia. All the elements needed to come to a diagnosis are present.




Reading level

1 / 3