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 060

ECG 060


Basic rhythm

Sinus rhythm, regular at 75 bpm.

P waves


PR interval



Normal axis and duration. Q wave in II, III, aVF, QS pattern in all precordial leads.

ST segment

Slight elevation from V1 to V3.

T waves

Flattened in the peripheral leads, negative in V5 and V6.

QT interval



Q waves from V1 to V6.
Q waves in II,III and aVF.


Previous anterolateral and inferior myocardial infarction from an unknown date.


The ST segment elevation observed at the acute phase of the myocardial infarction can persist for several weeks or even months after the coronary event. However, after a few months, it must be interpreted as a sign of dyskinesia or ventricular aneurysm (very probable in this case, considering the extent of the infarction).


Ischemia and myocardial infarction


Reading level

1 / 3