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Abstract
A 23 year old woman, convalescing from a motorcycle accident, was noted to have a
complex arrhythmia. Short bursts of apparent ventricular tachycardia, sudden P-R delays,
and Mobitz I and Mobitz II block were observed as well as frequent Junctional premature
systoles. Careful analysis revealed that the rhythm disturbances were caused entirely
by manifest and concealed atrioventricular (A-V) Junctional extrasystoles. This case
meets the criteria for concealed Junctional extrasystoles producing “pseudo A-V block.”
Pertinent literature is reviewed, and the manifestations of variable antegrade and
retrograde conduction of A-V Junctional extrasystoles are discussed. Increased awareness
of this unusual rhythm disturbance can prevent unnecessary pacemaker therapy for apparent
A-V block.
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Article info
Publication history
Accepted:
September 18,
1976
Identification
Copyright
© 1977 Published by Elsevier Inc.
