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Case Reports
. 2024 Feb 18;10(5):317-320.
doi: 10.1016/j.hrcr.2024.02.007. eCollection 2024 May.

Atrial fibrillation ablation with evidence of electrical conduction through the left atrial band: A case report

Daiki Yamashita  1 , Satoshi Fujita  1 , Yoshihiko Kagawa  1 , Kaoru Dohi  1
Affiliations
Case Reports

Atrial fibrillation ablation with evidence of electrical conduction through the left atrial band: A case report

Daiki Yamashita et al. HeartRhythm Case Rep. .
No abstract available

Keywords: Atrial fibrillation; Catheter ablation; Electrical conduction; Intracardiac echocardiography; Left atrial band.

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Conflict of interest statement

We have no conflicts of interest to disclosure concerning this report.

Figures

Figure 1
Figure 1
Preoperative cardiac computed tomography (CT) reveals a left atrial band adhering from the atrial septum to the posterior wall of the left atrium (A: axial section; B: inner view). A SoundStar intracardiac echocardiography (ICE) catheter (Biosense Webster, Diamond Bar, CA) was used to merge the left atrium and left atrial band before the transseptal puncture (C: ICE; D: CT merge). RIPV = right inferior pulmonary vein; RSPV = right superior pulmonary vein.
Figure 2
Figure 2
A: The ablation catheter is contacted with the central part of the left atrial band under the intracardiac echocardiography (ICE) catheter and contact force guide, and local potentials are confirmed. B: Pulmonary vein and posterior wall isolation was performed, although residual local potentials were observed in a part of the middle of the posterior wall, and the bidirectional block was not completed in the voltage map.
Figure 3
Figure 3
The activation map shows a centrifugal pattern with the atrial septum, the contralateral attachment end of the left atrial band, as the earliest atrial activation site (EAAS), suggesting incomplete pulmonary vein and posterior wall isolation by electrical conduction through the left atrial band (A: posteroanterior view; B: right anterior oblique view). C: When the voltage mapping was performed after focal ablation for the left atrial septum, the local potentials in the posterior wall disappeared, confirming the completion of the bidirectional block, and pulmonary vein and posterior wall isolation was completed.
See this image and copyright information in PMC

References

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