The image below shows the typical findings of a left bundle branch block in the precordial ECG leads. Note: If the QRS duration is 100 to 119 ms with criteria 2, 3 and 4 of the above, an ...

However, unlike in the presence of a left bundle branch block, myocardial ischemia and infarction can easily be detected on ECG when a RBBB is present. Below is an ECG displaying a right bundle ...

The ECG findings presented as normal in athletes were established by an international ... prolonged S wave upstroke and/or premature ventricular beats with a left bundle branch block (LBBB) morphology ...