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 ...
This ECG displays an accelerated idioventricular rhythm. This has a left bundle branch block pattern and is a good example of the AV dissociation that occurs. Now, look at the rhythm strip at the ...