Multifocal atrial tachycardia (MAT) requires three different P wave morphologies in one ECG with a QRS complex rate of > 100. Wandering atrial pacemaker (WAP) requires three different P wave ...

Below is a normal 12-lead ECG tracing. The different parts of the ECG will be described in the following sections. A normal ECG contains waves, intervals, segments and one complex, as defined below.

These ECG voltage attenuations are of extracardiac mechanism, and impact the amplitude of QRS complexes, P-waves, and T-waves, occasionally resulting also in shortening of the QRS complex and QT ...

His mission is to find out what different types of wave there are and how they work. With Britain's best young surfers, Jon investigates sea waves. How does the wave travel towards the shore ...