International Heart Journal

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Volume 61 (2020) Issue 1 Pages 174-177

Successful Ablation of Atrial Tachycardia Originating from Inside the Single Atrium and Conduit After a Fontan Operation

Hitoshi Mori, Naokata Sumitomo, Shota Muraji, Tomohiko Imamura, Noriyuki Iwashita, Toshiki Kobayashi

An 18-year-old male who had a past medical history of an intracardiac total cavopulmonary connection (TCPC) operation was referred to our hospital for radiofrequency catheter ablation (RFCA) of supraventricular tachycardia (SVT). Two types of SVTs were induced, and 3-dimensional (3D) maps were created using an ultra-high-density 3-dimensional mapping system (Rhythmia). The earliest atrial activation site (EAAS) of SVT1 was at the superior part of the conduit, and the EAAS of SVT2 was at the inferior part of the single atrium (SA). The SVTs were terminated by energy deliveries to the EAAS from the conduit in SVT1 and from inside the single atrium in SVT2. Detailed maps of the SVTs were important to understand the mechanisms of the SVTs. The Rhythmia system was useful for the detailed mapping of complex arrhythmias. The use of Rhythmia in patients after a TCPC is difficult, because puncturing the TCPC conduit and proceeding and manipulating the Orion catheter via a narrow puncture hole are difficult. We were the first to succeed in ablating two atrial tachycardias (ATs) originating from the inside and outside of the conduit after a TCPC operation by using an ultra-high-density 3-dimensional mapping system.

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2020 Volume 61 Issue 2

Factors Associated with a Large Decline in Renal Function or Progression to Renal Insufficiency in Hospitalized Atrial Fibrillation Patients with Early-Stage CKD Lili Hu, Qinmei Xiong, Zhiqing Chen, Linghua Fu, Jinzhu Hu, Qi Chen, Weiping Tu, Chengyun Xu, Gaosi Xu, Juxiang Li, Kui Hong
Impacts of Skeletonized Bilateral Internal Mammary Artery Bypass Grafting on the Risk of Deep Sternal Wound Infection Qiang Ji, Yun Zhao, Huan Liu, Ye Yang, YuLin Wang, WenJun Ding, LiMin Xia, Lai Wei, ChunSheng Wang
Percutaneous Catheter Thrombus Aspiration of Right Renal Infarction Caused by Left Ventricular Thrombi due to Takotsubo Cardiomyopathy Risa Kishikawa, Takahiro Tanaka, Masaki Hashimoto, Kei Honda, Yasutoshi Omori, Akiko Ishihara, Yoshiro Kamoi
Blood Coagulation Status during Cryofreezing Ablation and Effects of the Direct Anticoagulants Dabigatran and Edoxaban Kaoru Okishige, Tatsuhiko Hirao, Atsushi Oda, Takatoshi Shigeta, Rena A. Nakamura, Hiroshi Yoshida, Shinichi Tachibana, Yasuteru Yamauchi, Tetsuo Sasano, Kenzo Hirao

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