Atrioventricular Node Anatomy and Physiology: What Have We Learned from Catheter Ablation?

  • F. Gaita
  • R. Riccardi
  • F. Lamberti
  • M. Scaglione
  • L. Garberoglio
  • M. Alciati
Conference paper


Atrioventricular (AV) nodal reentrant tachycardia (AVNRT) is the most frequent form of supraventricular tachycardia. Its electrophysiologic mechanism has been known for many years. In 1913 Mines (1) first performed experiments on the AV connections of the heart and explained the mechanism of this arrhythmia as follows:

“A slight difference in the rate of recovery of two divisions of the AV connexion might determine that an extrasystole of the ventricle, provoked by a stimulus applied to the ventricle shortly after activity of the AV connexion, should spread up to the auricle by that part of the AV connexion having the quicker recovery process and not by the other part. In such a case, when the auricle became excited by this impulse, the other portion of the AV connexion would be ready to take up the transmission again back to the ventricle. Provided the transmission in each direction was slow, the chamber at either end would be ready to respond and thus the condition once established would tend to continue.”


Catheter Ablation Versus Node Slow Pathway Reentrant Tachycardia Versus Block 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Italia, Milano 1996

Authors and Affiliations

  • F. Gaita
    • 1
  • R. Riccardi
    • 1
  • F. Lamberti
    • 1
  • M. Scaglione
    • 1
  • L. Garberoglio
    • 1
  • M. Alciati
    • 1
  1. 1.Divisione di CardiologiaOspedale Civile di AstiItaly

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