Because there can be multiple slow pathways it is possible for a PVC to activate the atria via retrograde conduction over a different slow pathway than the one used for the tachycardia.

When the conduction ratio transitioned from 2:1 to 1:1, the initial phase of the increased ventricular rate exhibited 3 widened QRS complexes, resulting from aberrant conduction during the rapid ...

Cardiac channelopathies, also known as primary electrical heart diseases, are inherited genetic abnormalities of cardiomyocyte electrical behavior. Notable for their absence of structural heart ...