Digitalis Intoxication: Junctional Tachycardia With and Without Exit Block-KH
Frank Yanowitz
Copyright 1996
In 'A' the rhythm is junctional tachycardia with RBBB. In 'B' there is 2nd degree exit block with a 3:2 conduction ratio; i.e., every 3rd junctional impulse fails to reach the ventricles... at least for the first two groupings on 1.4sec.