Diagram: AV nodal reentrant tachycardia

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Title Diagram: AV nodal reentrant tachycardia
Creator Yanowitz, Frank G.
Contributor Frank G. Yanowitz, MD, Professor of Cardiology, University of Utah School of Medicine
Date 1997-01-01
Description The AV node often has dual pathways; in this diagram the alpha pathway is fast, but has a long refractory period; the beta pathway is conducts more slowly, but recovers faster.In sinus rhythm the faster alpha pathway is used and accounts for the normal PR interval. When a PAC occurs, however, the impulse may find the alpha pathway refractory, but able to traverse the beta pathway. When the premature impulse reaches the intersection of the two pathways, alpha may be recovered and allow retrograde activation of the atria; this may enable a reentrant tachycardia to develop, as illustrated in the diagram.
Subtype Image
Format image/png
Rights http://creativecommons.org/licenses/by-nc-sa/1.0/
Collection Knowledge Weavers ECG
ARK ark:/87278/s6fb82rq
Setname ehsl_heal
Date Created 2012-10-05
Date Modified 2012-12-10
ID 870159
Reference URL https://collections.lib.utah.edu/ark:/87278/s6fb82rq
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