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 164

ECG 164


Baseline rhythm

Sinus, regular at 100 bpm.P-waves: normal.PR interval: normal.QRS : normal axis. Tall R-waves from V3 to V6. Deep S-waves in V2.ST segment: normal.T-waves: negative from V4 to V6.QT interval: normal.


Tall R-waves. Negatives T waves.


Left ventricular hypertrophy predominant in the precordial leads. Typical tracing of hypertrophic cardiomyopathy.


The amplitudes of the R-waves from V3 to V6 together with the tall R-waves in V2 suggest left ventricular hypertrophy. The negative T-waves in the left precordial leads go with this type of hypertrophy. There are no signs of ventricular hypertrophy in the peripheral leads. All these features are typically encountered in hypertrophic cardiomyopathy.




Reading level

1 / 3