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Successful catheter ablation of postoperative atrial tachycardia with conduction disturbances: assessment by late-gadolinium enhancement magnetic resonance imaging and high-resolution electro-anatomical mapping
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  • Kazutaka Nakasone,
  • kunihiko kiuchi,
  • Mitsuru Takami,
  • Yu Izawa,
  • Koji Fukuzawa,
  • Ken-ichi Hirata
Kazutaka Nakasone
Kobe University Graduate School of Medicine
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kunihiko kiuchi
Kobe University Graduate School of Medicine
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Mitsuru Takami
Kobe University Graduate School of Medicine
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Yu Izawa
Kobe University Graduate School of Medicine
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Koji Fukuzawa
Kobe University Graduate School of Medicine
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Ken-ichi Hirata
Kobe University Graduate School of Medicine
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Abstract

Atrial tachycardia (AT) in the right atrium often occurs following open-heart surgery. Catheter ablation for these AT is challenging and can lead to unintended conduction block. We performed late-gadolinium enhancement magnetic resonance imaging (LGE-MRI) prior to catheter ablation and predicted wavefront propagation during SR as well as the slow conduction zone during tachycardia. LGE-MRI may assist predicting the conduction disturbance and reducing the risk of unexpected sinus exit block.