Document Detail

Stable and unstable ventricular tachycardias in patients with previous myocardial infarction: a clinically oriented strategy for catheter ablation.
MedLine Citation:
PMID:  17627109     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Catheter ablation of ventricular tachycardia (VT) after myocardial infarction (MI) can be complex and time-consuming. We only targeted the previously documented VTs and those with similar or longer cycle lengths. METHODS: 30 patients with VTs after MI were included in the study. Voltage mapping was performed using an electro-anatomic mapping system (CARTOT). Stable VTs were mapped during tachycardia and unstable VTs during sinus rhythm. RESULTS: Clinical VTs were stable in 16 (53%) and unstable in 14 (47%) patients, and ablation was successful in 11 (69%) and 9 patients (64%), respectively (p = 0.42). During follow-up (14 +/- 6 months), 4 patients (25%) treated for stable and 6 (43%) for unstable VTs had recurrences (p = 0.82); ablation was successful in none and 2 (33%) of them, respectively. Non-target VTs were inducible in 11 (55%) of 20 patients after successful ablation and non-inducible in 9 (45%). During follow-up, inducibility of non-target VTs did not predict recurrences (9 vs. 11%, p = 0.88). CONCLUSIONS: Catheter ablation of VTs after MI can be successfully performed. Acute success rates seem to be similar for stable and unstable VTs. VTs faster than those documented clinically exert a minor effect on VT recurrences during follow-up.
Rodolfo Ventura; Hanno U Klemm; Thomas Rostock; Boris Lutomsky; Tim Risius; Daniel Steven; Christian Weiss; Thomas Meinertz; Stephan Willems
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Publication Detail:
Type:  Clinical Trial; Journal Article     Date:  2007-07-10
Journal Detail:
Title:  Cardiology     Volume:  109     ISSN:  1421-9751     ISO Abbreviation:  Cardiology     Publication Date:  2008  
Date Detail:
Created Date:  2007-12-06     Completed Date:  2008-01-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1266406     Medline TA:  Cardiology     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  52-61     Citation Subset:  IM    
Copyright Information:
(c) 2007 S. Karger AG, Basel
Department of Cardiology, University Hospital Hamburg-Eppendorf, Hamburg, Germany.
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MeSH Terms
Catheter Ablation / adverse effects,  methods*
Electrophysiologic Techniques, Cardiac
Middle Aged
Prospective Studies
Tachycardia, Ventricular / diagnosis,  therapy*
Treatment Outcome

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