Delineation of an intra-isthmus reentry circuit around the coronary sinus ostium using an ultrahigh-resolution mapping system

Indian Pacing Electrophysiol J. 2023 Jul-Aug;23(4):133-134. doi: 10.1016/j.ipej.2023.04.014. Epub 2023 Apr 12.

Authors

Takayuki Sekihara¹, Takafumi Oka², Kentaro Ozu², Yasushi Sakata²

Affiliations

¹ Department of Cardiology, Faculty of Medical Sciences, University of Osaka, Osaka, Japan. Electronic address: [email protected].
² Department of Cardiology, Faculty of Medical Sciences, University of Osaka, Osaka, Japan.

Abstract

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Intra-isthmus reentry is a variant of cavotricuspid isthmus-dependent atrial flutter.
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Intra-isthmus reentry circuit can involve the rotational activation around the coronary sinus ostium.
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Ultrahigh-resolution mapping can help delineate the complete intra-isthmus reentry circuit.

Keywords: Atrial flutter; Cavotricuspid isthmus; Intra-isthmus reentry; Ultrahigh-resolution mapping.