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 192

ECG 192


Baseline rhythm

Sinus, regular at 85 bpm.P-waves: normal.PR interval: normal (140 ms).QRS: broadened (110 ms); upstroke at the beginning of the QRS with ∂ wave, clearly seen in the precordial leads and in V1 and V2. Axis -10 degrees.ST segment: normal.QT interval: normal.


∂ waves nicely visibles.
No Q waves.


Wolff-Parkinson-White syndrome with an accessory pathway probably located in the left postero-lateral region.


The presence of the short PQ with ∂ wave is typical of the WPW syndrome. The axis of the ∂ wave is compatible with a left-sided accessory pathway, most likely a postero-lateral one. If the patient is symptomatic, ablation of the accessory pathway is recommended because there is a risk of developing atrial fibrillation with a fast ventricular response which could result in syncopal episodes. The possible arrhythmias which these patients develop are narrow or broad complex A-V reentrant tachycardias and atrial fibrillation.




Reading level

1 / 3