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Europace Advance Access originally published online on May 16, 2007
Europace 2007 9(9):781-784; doi:10.1093/europace/eum085
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© The European Society of Cardiology 2007. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org

CATHETER ABLATION

Catheter ablation of premature ventricular contractions originating from the His bundle region

Keiichi Ashikaga1, Takeshi Tsuchiya2,*, Aya Nakashima3 and Kiyoshi Hayashida3

1 Awakigahara Hospital, Miyazaki, Japan; 2 Division of Cardiology, Hakuaikai Hospital, 4-3, Konya-ima machi, Kumamoto 860-0012, Japan; 3 Division of Cardiology, Saga Prefectural Hospital Kouseikan, Japan

We describe a 35-year-old man with idiopathic frequent premature ventricular contractions (PVCs) originating from the His-bundle region, where a low frequency ventricular potential was recorded in the bipolar recording and QR pattern in the unipolar recording. Electro-anatomical mapping revealed a confined low voltage zone (<1.2 mV) in the His-bundle region, and the activation spread out radially to the entire right ventricle. The PVCs were successfully abolished without any atrioventricular block by a step-wise incremental radiofrequency energy application to the His-bundle region. The patient has remained free from PVCs or any symptoms without medication during a 23 month follow-up period.

Key Words: Premature ventricular contractions, The His-bundle region, Electro-anatomical mapping, Radiofrequency catheter ablation

* Corresponding author. Tel: +81 96 325 2233; fax: +81 96 368 0414. E-mail address: tsuchiya{at}sl.kcn-tv.ne.jp

Manuscript submitted 23 August 2006. Accepted after revision 9 April 2007.


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