Endocardial noncontact activation mapping of idiopathic left ventricular tachycardia.
Idiopathic left ventricular tachycardia with a right bundle, left-axis deviation is thought to originate from posterior fascicles. Recently, there has been considerable interest in the anatomic and mechanistic basis of this arrhythmia. We report our experience with a 26-year-old man in whom new noncontact mapping technology was used to acquire detailed data from the left ventricle, identify the mid-diastolic potential and part of the ventricular tachycardia circuit, and perform successful ablation. This information helped define the physiologic aspects of this unique tachycardia.
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J
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University of Wisconsin Medical School-Milwaukee Clinical Campus, Electrophysiology Laboratories of St. Luke's and Sinai Samaritan Medical Centers, USA. rhenders@hrtcare.com
Bhatia
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Krum
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Akhtar
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M
D000328:Adult; D018780:Body Surface Potential Mapping / Q000295:instrumentation / Q000379:methods*; D002037:Bundle-Branch Block / Q000150:complications / Q000175:diagnosis*; D017115:Catheter Ablation; D003971:Diastole; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac / Q000379:methods*; D006801:Humans; D008297:Male; D017180:Tachycardia, Ventricular / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery; D016896:Treatment Outcome; D018487:Ventricular Dysfunction, Left / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery