Open AccessAdenosine‐Sensitive Focal Reentrant Atrial Tachycardia Originating From the Mitral Annulus‐Aorta Junction
Author(s) -
Morishima Itsuro,
Sone Takahito,
Tsuboi Hideyuki,
Mukawa Hiroaki,
Uesugi Michitaka
Publication year - 2008
Publication title -
journal of arrhythmia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 21
eISSN - 1883-2148
pISSN - 1880-4276
DOI - 10.1016/s1880-4276(08)80030-0
Subject(s) - medicine , reentry , adenosine , cardiology , tachycardia , mitral annulus , atrial tachycardia , aorta , atrial fibrillation , catheter ablation , diastole , blood pressure
Adenosine‐sensitive reentrant atrial tachycardia (AT) has been recognized to originate from the confined area of either the right or left atiroventricular nodal regions. We describe a case with adenosine‐sensitive focal AT which was successfully ablated at the uncommon focus located at the mitral annulus‐aorta junction. The mode of AT initiation during the atrial extrastimulus suggested as the mechanism tachycardia reentry; AT was terminated by a bolus of 2 mg of adenosine 5’‐triphosphate. These electrophysiological features are possibly associated with a substrate involved in the mitral annulus‐aorta junction with node‐like properties that is responsive to adenosine.