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Visualization of persistent superior vena cava isolation by cryoballoon ablation
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  • Daisuke Ishigaki ,
  • Takanori Arimoto,
  • Daisuke Kutsuzawa,
  • Naoaki Hashimoto,
  • Ken Watanabe,
  • Masafumi Watanabe
Daisuke Ishigaki
Yamagata University School of Medicine
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Takanori Arimoto
Yamagata University School of Medicine
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Daisuke Kutsuzawa
Yamagata University School of Medicine
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Naoaki Hashimoto
Yamagata University School of Medicine
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Ken Watanabe
Yamagata University School of Medicine
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Masafumi Watanabe
Yamagata University School of Medicine
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Abstract

A 54-year-old man with paroxysmal atrial fibrillation underwent pulmonary vein (PV) isolation using a 28 mm second-generation cryoballoon catheter. Unexpected electrical superior vena cava (SVC) isolation during cryoballoon application to the right superior PV was observed in the first procedure. Thirteen-months after cryoballoon-based PV isolation, sustained SVC fibrillation was confirmed irrespective of sinus rhythm. Voltage mapping visualized a low voltage area around the SVC was consistent with that around the right superior PV. SVC isolation was obtained by cryoballoon application to the right superior PV and persisted for over a year.