Atrial tachycardia originating from the upper left atrial septum: Demonstration of transseptal interatrial conduction using the infolded atrial walls

Koji Kumagai, Fumio Suzuki, Kazutaka Aonuma, Hiroaki Shimokawa

研究成果: Article査読

2 被引用数 (Scopus)

抄録

We report a rare case of atrial tachycardia (AT) originating from the upper left atrial septum. Electroanatomic mapping of both atria demonstrated that the earliest atrial activation during AT occurred at the upper left atrial septum 26 msec before the onset of the P wave, followed by the mid-right atrial septum (10 msec before the onset of the P wave) and then the upper right atrial septum just adjacent to the left septal AT site (1 msec before the onset of the P wave), indicating detour pathway conduction from the upper left to the upper right atrium. Embryologically, it was suggested that the superior components of the secondary atrial septum are made by the infolded atrial walls and could develop a transseptal detour pathway involving the left-side atrial septal musculature, the superior rim of the oval fossa and the right-side atrial septal musculature. A single radiofrequency application targeting the upper left atrial septum successfully abolished the AT.

本文言語English
ページ(範囲)907-911
ページ数5
ジャーナルJournal of Cardiovascular Electrophysiology
17
8
DOI
出版ステータスPublished - 2006 8

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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