Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing
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J Interv Card Electrophysiol · Oct 2004
Comparison of presystolic purkinje and late diastolic potentials for selection of ablation site in idiopathic verapamil sensitive left ventricular tachycardia.
Idiopathic verapamil-sensitive left ventricular tachycardia (ILVT) is the most common form of idiopathic left ventricular tachycardia (VT). Different methods have been proposed for ablation of ILVT. ⋯ Compared to DP alone, earliest PP (with or without concomitant DP) might be superior for selection of target site of RF ablation in patients with ILVT.
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J Interv Card Electrophysiol · Aug 2004
Comparative StudyDynamic substrate mapping and ablation of ventricular tachycardias in right ventricular dysplasia.
Ablation of ventricular tachycardias in arrhythmogenic right ventricular dysplasia (ARVD-VTs) still remains a clinical challenge. We reported the value of abnormal electrophysiological substrate mapping for guiding ablation of ARVD-VTs using a non-contact mapping system. ⋯ Defining the abnormal anatomical VT substrates is useful for understanding the mechanisms of ARVD-VTs and determining an ablation strategy. Linear ablation across a critical isthmus or between the early activation and the exit point can effectively cure these arrhythmias.
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J Interv Card Electrophysiol · Dec 2003
Randomized Controlled Trial Multicenter Study Comparative Study Clinical TrialPrevention of sustained ventricular tachyarrhythmias in patients with implantable cardioverter-defibrillators-the PREVENT study.
In patients with implantable cardioverter-defibrillators (ICDs), 25 to 45% of tachyarrhythmia episodes were initiated by short-long-short RR intervals. ⋯ 'Rate smoothing' significantly reduced sustained ventricular tachyarrhythmias in ICD patients. There is a relevant superiority of the treatment during the early six months of follow-up.
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J Interv Card Electrophysiol · Feb 2003
Comparative StudySuccessful implantation of cardiac defibrillators without induction of ventricular fibrillation using upper limit of vulnerability testing.
Conventionally, the implantable cardioverter-defibrillator (ICD) is tested at implantation by measurement of defibrillation threshold (DFT), which involves repeated induction of ventricular fibrillation (VF). We report our data on successful ICD implantation without VF induction using a modified upper limit of vulnerability (ULV) testing method, compared to standard DFT testing. ⋯ Successful ICD implantation can be safely performed with no or fewer episodes of VF induction using a modified ULV testing method.
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J Interv Card Electrophysiol · Dec 2002
Recurrent atrial flutter and atrial fibrillation after catheter ablation of the cavotricuspid isthmus: a very long-term follow-up of 333 patients.
Radiofrequency catheter ablation of the cavotricuspid isthmus is an effective therapy for typical atrial flutter (AFL), however, the long-term recurrence of AFL and early or late occurrence of atrial fibrillation (AF) are not well defined. This study investigated the long-term (up to 68 months) outcome of patients with typical AFL after catheter ablation of the cavotricuspid isthmus. ⋯ Linear ablation of the cavotricuspid isthmus is an effective therapy with low recurrence rate for patients with typical AFL. However, one-third patients had early or late occurrence of AF.