Unusual locations for adenosine-sensitive accessory atrioventricular pathways with decremental conduction.
BACKGROUND
Accessory AV pathways with decremental conduction are uncommon and, in particular, are thought not to occur at the anterior portion of the mitral annulus.


RESULTS
This report describes successful catheter ablation in three patients with accessory AV pathways that were adenosine sensitive and showed decremental conduction properties. The pathways were located at the anteroseptal, anteroparaseptal, and anterolateral aspects of the mitral annulus.


CONCLUSIONS
Accessory pathways with decremental conduction do occur anywhere around the mitral annulus, even in the area of fibrous continuity between the aortic leaflet of the mitral valve and the aortic valve itself.
Frey
B
B
Department of Cardiology, University of Vienna, Wien, Austria.
Kreiner
G
G
Berger
R
R
Gössinger
H D
HD
D000241:Adenosine; D000328:Adult; D000889:Anti-Arrhythmia Agents; D002036:Bundle of His / Q000187:drug effects* / Q000503:physiopathology; D017115:Catheter Ablation; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007262:Infusions, Intravenous; D008297:Male; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery
D000889:Anti-Arrhythmia Agents; D000241:Adenosine