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Horizontal and Longitudinal Dissociation of the A‐V Node During Atrial Tachycardia
Author(s) -
ROY DENIS,
WAXMAN HARVEY L.,
BUXTON ALFRED E.,
JOSEPHSON MARK E.
Publication year - 1983
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1983.tb05297.x
Subject(s) - medicine , cardiology , atrioventricular node , dissociation (chemistry) , tachycardia , ventricular rate , bundle of his , supraventricular tachycardia , electrical conduction system of the heart , electrocardiography , heart rate , chemistry , blood pressure
The co‐existence of horizontal and longitudinal dissociation of the atrioventricular (A‐V) node has not previously been reported. Analysis of ECG tracings from 4 patients with supra ventricular tachycardias showing an irregular ventricular rate suggest that such a mechanism was responsible for the irregular A‐V conduction pattern. His bundle recording was obtained in one patient and revealed the site of block to be located in the A‐V node. Multi‐level block and longitudinal dissociation of the A‐V node is probably not rare and should be included in the discussion of supraventricular arrhythmias displaying irregular ventricular rates.