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 207

ECG 207


Baseline rhythm

Sinus, regular at 75 bpm.P-waves: prolonged duration at 160 ms.PR interval: prolonged (240 ms).QRS: not broadened (100 ms); Q-wave in V2, poor progression of the R-wave in the precordial leads, left axis deviation (-35º).ST segment: isoelectric.T-waves: normal.QT interval: prolonged (490 ms).


Old anterior myocardial infarction.
Left axis deviation and prolonged PR interval.
Prolonged QT interval.


First degree A-V block, left axis deviation with left anterior hemiblock, sequelae of antero-septal infarct, left atrial dilatation and prolonged QT.


The P-wave is pathological and its morphology in I, II and V1 is compatible with left atrial dilatation. The PR interval is prolonged which corresponds to first degree A-V block. The Q-wave in V2 and the poor progression of the R-wave in the precordial leads are the consequence of an old antero-septal infarct. The QT is prolonged in the context of amiodarone treatment.


Ischemia and myocardial infarction


Reading level

1 / 3