1. Comparison of mapping criteria for hemodynamically tolerated, postinfarction ventricular tachycardia.
- Author
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Bogun F, Kim HM, Han J, Tamirissa K, Tschopp D, Reich S, Elmouchi D, Igic P, Lemola K, Good E, Oral H, Chugh A, Pelosi F, and Morady F
- Subjects
- Aged, Electrocardiography, Female, Humans, Male, Myocardial Infarction physiopathology, Predictive Value of Tests, ROC Curve, Sensitivity and Specificity, Tachycardia, Ventricular physiopathology, Catheter Ablation methods, Electrophysiologic Techniques, Cardiac, Tachycardia, Ventricular surgery
- Abstract
Background: Mapping criteria for hemodynamically tolerated, postinfarction ventricular tachycardia (VT) have been evaluated in only small series of patients., Objectives: The purpose of this study was to evaluate the utility of various mapping criteria for identifying a critical VT circuit isthmus in a post hoc analysis., Methods: Ninety VTs (cycle length 491 +/- 84 ms) were mapped in 48 patients with a prior myocardial infarction. The mapping catheter was positioned within a protected area of the reentrant circuit of the targeted VTs at 176 sites. All sites showed concealed entrainment. The predictive values of the following mapping criteria for a successful ablation site were compared: discrete isolated potential during VT, inability to dissociate the isolated potential from the VT, endocardial activation time >70 ms, matching electrogram-QRS and stimulus-QRS intervals, VT termination without global capture during pacing, stimulus-QRS/VT cycle length ratio
- Published
- 2006
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