| Importance of initiation pattern of polymorphic ventricular tachycardia in patients with implantable cardioverter defibrillators. | |
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MedLine Citation:
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PMID: 16441717 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Stored intracardiac electrograms (ICEGs) are helpful in understanding the initiation mechanisms of sustained ventricular arrhythmias and in determining the appropriateness of the therapy delivered by implantable cardioverter defibrillators (ICDs). AIM: We investigated the initiation pattern of sustained polymorphic ventricular tachycardia (PVT) and the features of the therapy delivered by ICDs. METHODS: Sixty-six patients (mean age of 67 +/- 8 years) with 97 stored ICEGs showing PVT were evaluated. Cardiovascular diagnosis included coronary artery disease in 72.7% of the patients. The average left ventricular ejection fraction was 33+/-6%. RESULTS: Nonsudden onset episodes were more common than sudden onset episodes (63 episodes, 65% vs 34 episodes, 35%, P < 0.001). More PVT episodes were required multiple shock delivery if they had nonsudden onset initiation (28.6% vs 23.6%, P < 0.01). The mean shock energy delivered for arrhythmia termination was higher in PVT with nonsudden onset (20 +/- 4 vs 14 +/- 5 J, P < 0.01). CONCLUSIONS: The stored ICEGs demonstrate that PVT is most often preceded by ventricular ectopy. To be reverted, nonsudden onset episodes require higher levels of shock energy and more frequently multiple shock achievements than sudden onset episodes. |
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Authors:
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Bulent Gorenek; Gulmira Kudaiberdieva; Alparslan Birdane; Yuksel Cavusoglu; Omer Goktekin; Ahmet Unalir; Necmi Ata; Bilgin Timuralp |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Pacing and clinical electrophysiology : PACE Volume: 29 ISSN: 0147-8389 ISO Abbreviation: Pacing Clin Electrophysiol Publication Date: 2006 Jan |
Date Detail:
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Created Date: 2006-01-30 Completed Date: 2006-07-13 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7803944 Medline TA: Pacing Clin Electrophysiol Country: United States |
Other Details:
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Languages: eng Pagination: 48-52 Citation Subset: IM |
Affiliation:
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Cardiology Department, Eskisehir Osmangazi University, Eskisehir, Turkey. bulent@gorenek.com |
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Analysis of Variance Chi-Square Distribution Defibrillators, Implantable* Electrocardiography Female Humans Male Tachycardia, Ventricular / physiopathology*, therapy* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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