Double Wenckebach phenomenon in atrioventricular node and His bundle. Electrophysiological demonstration in a case of atrial flutter.
AUTOR(ES)
Slama, R
RESUMO
In a case of atrial flutter with a 9:2 atrioventricular response, the only possible way to explain the conduction pattern was 3:1 block in the atrioventicular node (which is 3:2 Wenckebach sequence in the N zone and a 2:1 block at the junction of the node with the bundle of His) plus 3:2 Wenckebach sequence distal to the H deflection. The recording of the His bundle deflection confirmed this analysis.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=482530Documentos Relacionados
- Multilevel block in the atrioventricular node during atrial tachycardia and flutter alternating with Wenckebach phenomenon.
- Arterial blood supply of the atrioventricular node and main bundle.
- Electrophysiological features of complete AV block within the His bundle.
- Relation between atrioventricular pathways and ventricular response during atrial fibrillation and flutter.
- Disappearing His deflection. Electrophysiological evidence for conduction defect within the His bundle.