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BACKGROUND As the population ages, recurrent ventricular tachycardia (VT) is increasingly encountered in elderly patients with ischemic heart disease. Radiofrequency catheter ablation is useful for reducing VT therapy in patients with an implantable defibrillator. The utility of radiofrequency catheter ablation in the elderly is not well defined. (More)
Atrial fibrillation (AF) and heart failure (HF) are common and interrelated conditions, each promoting the other, and both associated with increased mortality. HF leads to structural and electrical atrial remodeling, thus creating the basis for the development and perpetuation of AF; and AF may lead to hemodynamic deterioration and the development of(More)
OBJECTIVES The aim of this study was to perform a systematic evaluation of safety and midterm complications after epicardial ventricular tachycardia (VT) ablation. BACKGROUND Epicardial VT ablation is increasingly performed, but there is limited information about its safety and midterm complications. METHODS All patients undergoing VT ablation at 3(More)
BACKGROUND Currently, only anecdotal information exists on the presentation and outcome of coronary arterial injury after ablation procedures. METHODS AND RESULTS Four patients who sustained coronary artery injury of a cohort of patients undergoing 4655 consecutive ablation procedures (0.09%) are described. The patients' mean age was 45+/-11 years, and(More)
AIMS The aims of the study were (i) to assess the characteristics of patients selected for atrial fibrillation (AF) ablation as first-line therapy, (ii) to identify current clinical criteria for such a strategy, and (iii) to analyse the outcome compared with patients who had failure of antiarrhythmic drug (AAD) therapy prior to ablation. METHODS AND(More)
BACKGROUND Patients may develop dual-loop re-entrant atrial arrhythmias late after open-heart surgery, and mapping and catheter ablation remain challenging despite computer-assisted mapping techniques. OBJECTIVES The purpose of the study was to demonstrate the prevalence and characteristics of dual-loop re-entrant arrhythmias, and to define the optimal(More)
BACKGROUND Steam pops are a risk of irrigated radiofrequency catheter ablation (RFA) and may cause cardiac perforation. Data to guide radiofrequency (RF) energy titration to avoid steam pops are limited. OBJECTIVE This study sought to assess the frequency and consequence of audible pops and to determine the feasibility of using the magnitude of impedance(More)
OBJECTIVE Prolonged ECG monitoring is standard for atrial fibrillation (AF) screening. This study investigated whether 7-day event triggered (tECG) ECG recording is equivalent to 7-day continuous Holter (cECG) ECG recording for AF screening. DESIGN Both a cECG (Lifecard CF) and a tECG (R.Test Evolution 3) were simultaneously worn for 7 days by patients(More)
INTRODUCTION Risk stratification for patients with suspected Brugada syndrome (BS) remains difficult. Implantation of cardioverter-defibrillators (ICDs) in high-risk patients provides continuous long-term arrhythmia protection. METHODS Data of 33 consecutive patients undergoing ICD implantation after BS evaluation between 1995 and 2008 were reviewed. (More)
UNLABELLED VT Ablation in Apical Hypertrophic Cardiomyopathy.  INTRODUCTION Monomorphic ventricular tachycardia (VT) is uncommon in apical hypertrophic cardiomyopathy (HCM). The purpose of this study was to define the substrate and role of catheter ablation for VT in apical HCM. METHODS Four patients with apical HCM and frequent, drug refractory VT(More)