Adenosine-sensitive atrial tachycardia originating from the para-Hisian
region with a slow conduction zone in the anteroseptal left atrium
Abstract
Adenosine-sensitive atrial tachycardias (ATs) originating from the
para-Hisian region have been reported, and their responsible mechanism
is considered to be reentry. As an alternative strategy to ablation at
the earliest activaton site (EAS) close to the atrioventricular node,
previous reports safely eliminated these ATs at the entrance of the SCZ,
indicated by a manifest entrainment-guided strategy, but no report has
successfully ablated those ATs using the same strategy in the left
atrium. We described a case of adenosine-sensitive AT originating from
the para-Hisian region that could be eliminated at a remote site from
the EAS indicated by the demonstration of manifest entrainment from the
anteroseptal LA.