Electrophysiological and mathematical characteristics of the escape rhythm during complete AV block

Academic Article

Abstract

  • AUTHORS' SYNOPSIS: During complete AV block produced by selective administration of physostigmine into the AV node artery of the dog, there is a stable escape rhythm which has properties of automaticity (rather than re-entry) and which has narrow QRS complexes similar to those during sinus rhythm. No other stable escape rhythm occurred. This rhythm (AVJ-2) had a rate which bore a constant mathematical relation to that of control sinus rhythm (AVJ-2 :SR = 2:9) and also to the rate of the escape AV junctional rhythm (AVJ-1) which emerges during selective suppression of the sinus node without AV block (AVJ-2:AVJ-1 = 1:3).
  • Published In

    Digital Object Identifier (doi)

    Author List

  • Urthaler F; Katholi CR; Macy J; James TN
  • Start Page

  • 173
  • End Page

  • 186
  • Volume

  • 8
  • Issue

  • 2