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Cardiovascular Medicine
Volume 21
Issue 11
10.4414/cvm.2018.00593
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Cardiovascular Medicine is published by MDPI from Volume 28 Issue 1 (2025). Previous articles were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence, and they are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Editores Medicorum Helveticorum (EMH).
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Case Report

Dual Tachycardia Involving the Cavotricuspid Isthmus and Eustachian Ridge

by
Ivan Zeljkovic
1,*,
Sven Knecht
1,2,
Antonio Madaffari
1,2,
Dominik Mannhart
1,2,
Sarah Burri
1,2,
Andrea Germann
1,2,
Christian Sticherling
1,2 and
Michael Kühne
1,2
1
Cardiology, University Hospital Basel, University of Basel, Basel, Switzerland
2
Cardiovascular Research Institute Basel, Basel, Switzerland
*
Author to whom correspondence should be addressed.
Cardiovasc. Med. 2018, 21(11), 296; https://doi.org/10.4414/cvm.2018.00593
Submission received: 14 August 2018 / Revised: 14 September 2018 / Accepted: 14 October 2018 / Published: 14 November 2018
Versions Notes

Abstract

The Eustachian ridge is ablated as part of the cavotricuspid isthmus (CTI) involved in typical atrial flutter (AFL) ablation, but is itself rarely an arrhythmogenic focus. We report a case of a patient with dual tachycardia involving the CTI area. During an electrophysiology study including ablation of the CTI, a second slightly irregular local tachycardia with potentials on the distal ablation catheter was noticed. After termination of AFL during the CTI ablation, the local tachycardia was persistently recorded at the Eustachian ridge, without affecting the atrial tissue or the stable sinus rhythm. Additional radiofrequency ablation in this area terminated the local tachycardia.
Keywords: atrial tachycardia; atrial flutter; cavotricuspid isthmus; persistent; Eustachian ridge atrial tachycardia; atrial flutter; cavotricuspid isthmus; persistent; Eustachian ridge

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MDPI and ACS Style

Zeljkovic, I.; Knecht, S.; Madaffari, A.; Mannhart, D.; Burri, S.; Germann, A.; Sticherling, C.; Kühne, M. Dual Tachycardia Involving the Cavotricuspid Isthmus and Eustachian Ridge. Cardiovasc. Med. 2018, 21, 296. https://doi.org/10.4414/cvm.2018.00593

AMA Style

Zeljkovic I, Knecht S, Madaffari A, Mannhart D, Burri S, Germann A, Sticherling C, Kühne M. Dual Tachycardia Involving the Cavotricuspid Isthmus and Eustachian Ridge. Cardiovascular Medicine. 2018; 21(11):296. https://doi.org/10.4414/cvm.2018.00593

Chicago/Turabian Style

Zeljkovic, Ivan, Sven Knecht, Antonio Madaffari, Dominik Mannhart, Sarah Burri, Andrea Germann, Christian Sticherling, and Michael Kühne. 2018. "Dual Tachycardia Involving the Cavotricuspid Isthmus and Eustachian Ridge" Cardiovascular Medicine 21, no. 11: 296. https://doi.org/10.4414/cvm.2018.00593

APA Style

Zeljkovic, I., Knecht, S., Madaffari, A., Mannhart, D., Burri, S., Germann, A., Sticherling, C., & Kühne, M. (2018). Dual Tachycardia Involving the Cavotricuspid Isthmus and Eustachian Ridge. Cardiovascular Medicine, 21(11), 296. https://doi.org/10.4414/cvm.2018.00593

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