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Pleomorphic ventricular tachycardia originating from Purkinje fiber network of left anterior fascicle

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Title: Pleomorphic ventricular tachycardia originating from Purkinje fiber network of left anterior fascicle
Authors: Yokoshiki, Hisashi Browse this author
Mitsuyama, Hirofumi Browse this author
Watanabe, Masaya Browse this author
Sakurai, Masayuki Browse this author
Tsutsui, Hiroyuki Browse this author
Keywords: Pleomorphic ventricular tachycardia
Polymorphic ventricular tachycardia
Diastolic potential
Delayed potential
Left anterior fascicle
Purkinje fiber network
Radiofrequency ablation
Issue Date: Sep-2010
Publisher: Elsevier
Journal Title: Journal of Electrocardiology
Volume: 43
Issue: 5
Start Page: 452
End Page: 458
Publisher DOI: 10.1016/j.jelectrocard.2009.12.007
PMID: 20092827
Abstract: A 55-year old woman with recurrent syncope and palpitation experienced polymorphic ventricular tachycardia (VT) and more than three monomorphic VTs with a right bundle branch block configuration, either inferior-, middle-, and superior-axis. During the pleomorphic VT, the diastolic potential (dp) was recorded at the antero-lateral left ventricle. Changes in the QRS morphology were associated with the time between dp and onset of QRS complex (dp-V interval), and prolongation of dp-V interval terminated the VT. In addition, the delayed potentials were seen during sinus rhythm around this area. Delivery of radiofrequency current targeting the delayed potentials abolished all the VTs. Different exits from relatively large area of slow conduction in the left anterior fascicle might have produced the pleomorphic VTs.
Type: article (author version)
Appears in Collections:北海道大学病院 (Hokkaido University Hospital) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 横式 尚司

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