Reentrant tachycardia using two discrete atrioventricular nodes and a concealed atriofascicular pathway.
We describe a case of reentrant supraventricular tachycardia using two discrete atrioventricular (AV) nodes in the antegrade direction and a concealed atriofascicular pathway in the retrograde direction in a 21-year-old woman with superior-inferior ventricles and ventricular inversion. Using the Carto endocardial mapping system, two discrete AV nodes were identified as well as a separate decremental AV pathway located midway between the two nodes. Ablation of the separate pathway resulted in elimination of inducible tachycardia without loss of either AV node.
Dubin
A M
AM
Stanford University, Stanford, CA, USA. amdubin@leland.stanford.edu
Desai
K
K
Van Hare
G F
GF
D000328:Adult; D001283:Atrioventricular Node / Q000002:abnormalities* / Q000503:physiopathology; D018780:Body Surface Potential Mapping; D004562:Electrocardiography; D005260:Female; D006330:Heart Defects, Congenital / Q000175:diagnosis* / Q000503:physiopathology; D006352:Heart Ventricles / Q000002:abnormalities / Q000503:physiopathology; D006801:Humans; D012815:Signal Processing, Computer-Assisted; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000151:congenital* / Q000175:diagnosis / Q000503:physiopathology