RADIOFREQUENCY CURRENT CATHETER ABLATION FOR VENTRICULAR TACHYCARDIA

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概要

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• Radiofrequency current catheter ablation was attempted for 17 morphologies of ventricular tachycardia (VT) in 14 patients. Five patients had underlying heart disease. The site of VT origin was determined as the earliest site of ventricular activation, or by pacing within the area of slow conduction. In 15 VTs, ablation was performed during VT, and 12 VTs (80%) were terminated within an average of 5.4±4.2 seconds. After ablation, 14 VTs (14/17=82%) of 11 patients (11/14=79%) could not be induced by electrical stimulation. Radiofrequency ablation appeared to be more effective in VTs without underlying heart disease (91%), and in VTs originating from the right ventricle (100%). Successful ablation sites usually showed a normal local electrograms during VT. Ablation in the slow conduction area was attempted in 3 VTs, and 2 VTs became noninducible. The mean number of applications of radiofrequency current for each VT origin was 7.7±6.4 at 20-50 Watts. In 4 patients, application of radiofrequency current was required 10 or more times because of a possible large arrhythmogenic area, or because of reinduction of VT, even though VT was terminated by radiofrequency current. No major complication was observed except for complete right bundle branch block in 1 patient. In conclusion: (1) Radiofrequency catheter ablation was considered to be effective and safe, especially for VT without underlying heart disease or VT originating from the right ventricle. (2) Ablation during VT was considered to be useful for identifying the proper ablation site and to avoid creating an unnecessary lesion.

• 社団法人日本循環器学会の論文
• 1994-04-20

著者

• Shibata Akira

  Division Of Cardiology Niigata University Graduate School Of Medical And Dental

• Shibata A

  Division Of Cardiology Niigata University Graduate School Of Medical & Dental Sciences

• Aizawa Yoshifusa

  First Department of Internal Medicine, Niigata University School of Medicine

• Chinushi Masaomi

  First Department Of Internal Medicine Niigata University School Of Medicine

• Washizuka Takashi

  First Department of Internal Medicine, Division of Cardiology, Niigata University School of Medicine

• Washizuka Takashi

  First Department Of Internal Medicine Niigata University School Of Medicine

• Shibata Akira

  The First Department of Internal Medicine, Niigata University School of Medicine

• Shibata Akira

  First Department of Internal Medicine Niigata University School of Medicine

• Sato Akinori

  Department Of Molecular Pathogenesis Medical Research Institute Tokyo Medical And Dental University

• Shibata Akira

  The First Department Of Internal Medicine Niigata University School Of Medicine Tachikawa Hospital T

• Shibata Akira

  1st Department Of Internal Medicine Niigata University School Of Medicine

• Shibata Akira

  First Department Of Internal Medicine Niigata University Niigata Case Western Reserve University

• Takahashi Kazuyoshi

  First Department Of Internal Medicine Niigata University School Of Medicine

• Shibata Akira

  The First Department Of Internal Medicine Niigata University School Of Medicine

• KUSANO YORIKO

  First Department of Internal Medicine, Niigata University School of Medicine

• MIYAJIMA TAKEFUMI

  First Department of Internal Medicine, Niigata University School of Medicine

• NAITHO NAOKI

  First Department of Internal Medicine, Niigata University School of Medicine

• Naitoh Naoki

  First Department Of Internal Medicine Niigata University School Of Medicine

• Kusano Yoriko

  First Department Of Internal Medicine Niigata University School Of Medicine

• Miyajima Takefumi

  First Department Of Internal Medicine Niigata University School Of Medicine

• Aizawa Yoshifusa

  First Department Of Internal Medicine Niigata Universaity School Of Medicine

• Shibata Akira

  The 1st. Depertment Of Internal Medicine Niigata University School Of Medicine.

• WASHIZUKA Takashi

  First Department of Internal Medecine, Niigata University School of Medicine, Niigata, Japan.

• AIZAWA Yoshifusa

  First Department of Internal Medecine, Niigata University School of Medicine, Niigata, Japan.

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