Radiofrequency catheter ablation of left ventricular outflow tract tachycardia from the coronary cusp: A new approach to the tachycardia focus

Eimei Shimoike, Yasushi Ohnishi, Norihiro Ueda, Toru Maruyama, Yoshikazu Kaji

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    66 Citations (Scopus)

    Abstract

    Introduction: Idiopathic ventricular tachycardia (VT) originating from the left ventricular outflow tract (LVOT) is rare. Previously reported were two cases of LVOT tachycardia which were treated with radiofrequency (RF) catheter ablation through endocardial aortomitral continuity. We report here a case of a repetitive LVOT tachycardia in which the QRS morphology during VT exhibited an atypical left bundle branch block and inferior axis. Pace mapping revealed that the origin of this VT was very close to the left sinus of Valsalva. Transcoronary cusp RF catheter ablation abolished the VT in this patient and is a new approach for the treatment of this kind of VT. The application of this approach to the other types of VT has yet to be determined.

    Original languageEnglish
    Pages (from-to)1005-1009
    Number of pages5
    JournalJournal of Cardiovascular Electrophysiology
    Volume10
    Issue number7
    DOIs
    Publication statusPublished - 1999

    All Science Journal Classification (ASJC) codes

    • Cardiology and Cardiovascular Medicine
    • Physiology (medical)

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