V-A block during atrioventricular nodal reentrant tachycardia: reentry confined to the AV node.
Retrograde block during atrioventricular (AV) nodal reentrant tachycardia is considered a rare phenomenon that can potentially occur in the AV node or in the atrium. A patient with slow-fast AV nodal reentrant tachycardia and transient VA block localized in the AV node is presented. Pharmacological and stimulation maneuvers identified the site of block in the AV node and not in the atrium. Thus, AV nodal reentry can be confined to the AV node.
Gonzalez
Mario D
MD
Division of Cardiovascular Medicine, Cardiovascular Section, Department of Medicine, University of Florida, P.O. Box 100277, Gainesville, Florida 32610-0277, USA. gonzamd@medicine.ufl.edu
Contreras
Leonardo
L
Cardona
Francisco
F
Klugewicz
Christopher
C
Erga
Knut S
KS
D000328:Adult; D001283:Atrioventricular Node / Q000503:physiopathology*; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006327:Heart Block / Q000503:physiopathology*; D006801:Humans; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000503:physiopathology*