Junctional Tachycardia With Exit Block: A Manifestation of Digitalis Intoxication-KH
Frank Yanowitz
Copyright 1996
The "ladder diagram" says it all: the atria are fibrillating; there is complete heart block in the AV junction; a junctional tachycardia focus is firing at about 130 bpm, but not all junctional impulses reach the ventricles due to 2nd degree exit block.