Key result
Ablation guided by noncoronary aortic sinus entrainment successfully treats 1 case of adenosine-sensitive AT.
Case Report (n=1)
This case demonstrates that adenosine-sensitive atrial tachycardia originating from the para-Hisian region can be safely ablated at the entrance of the slow conduction zone using a manifest entrainment-guided strategy from the noncoronary aortic sinus.
May support entrainment-guided ablation from noncoronary sinus in para-Hisian adenosine-sensitive AT; hypothesis-generating from single case, needs prospective validation.
Adenosine-sensitive atrial tachycardias (ATs) originating from the atrioventricular (AV) node vicinity have been reported, and the mechanism responsible is considered to be reentry.1 Previous reports have demonstrated manifest entrainment from the right atrium (RA)2–4 or mitral annulus (MA)4,5 during these ATs, and most of them could be ablated safely at the entrance of the slow conduction zone (SCZ), indicated by a manifest entrainment-guided strategy.2,3 We describe a case of adenosine-sensitive AT originating from the para-Hisian region that could be ablated at the entrance of the SCZ, indicated by the demonstration of manifest entrainment from the noncoronary aortic sinus (NCS).
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Sakai et al. (2020) conducted a case report in Adenosine-sensitive atrial tachycardia (n=1). Ablation at the entrance of the slow conduction zone was evaluated. Ablation at the entrance of the slow conduction zone, guided by manifest entrainment from the noncoronary aortic sinus, successfully treated 1 case of adenosine-sensitive atrial tachycardia.
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