Tako-tsubo cardiomyopathy following transcatheter radiofrequency ablation of the atrioventricular node.
A 66-year-old woman with atrial fibrillation and hypertension developed tako-tsubo cardiomyopathy following acutely uneventful radiofrequency catheter ablation of the atrioventricular (AV) node. We speculate that the increase in sympathetic activity that accompanies AV node ablation contributed to the pathophysiological process, which involves increased catecholamines and/or apical adrenoreceptor density and responsiveness.
Electrophysiology Service, Montreal Heart Institute, 5000 Belanger Street E., Montreal, QC, Canada.
Wadi
W
Mawad
Peter G
PG
Guerra
Marc
M
Dubuc
Paul
P
Khairy
D000368:Aged; D001281:Atrial Fibrillation / Q000503:physiopathology / Q000601:surgery*; D001283:Atrioventricular Node / Q000503:physiopathology / Q000601:surgery*; D002395:Catecholamines / Q000378:metabolism; D017115:Catheter Ablation / Q000009:adverse effects*; D005260:Female; D006801:Humans; D011941:Receptors, Adrenergic / Q000378:metabolism; D013564:Sympathetic Nervous System / Q000502:physiology; D054549:Takotsubo Cardiomyopathy / Q000209:etiology* / Q000503:physiopathology
D002395:Catecholamines; D011941:Receptors, Adrenergic