Melanie Konstantinidou

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BACKGROUND Paroxysmal atrial fibrillation (AF) naturally progresses toward chronic AF at an estimated rate of 15% to 30% over a 1- to 3-year period. Pulmonary vein (PV) isolation is increasingly performed for the treatment of drug-refractory paroxysmal AF. The long-term data on clinical outcome after circumferential PV isolation are limited. METHODS AND(More)
AIMS Cryothermal energy (CTE) ablation via a balloon catheter (Arctic Front, Cryocath) represents a novel technology for pulmonary vein isolation (PVI). However, balloon-based PVI approaches are associated with phrenic nerve palsy (PNP). We investigated whether 'single big cryoballoon'-deployed CTE lesions can (i) achieve acute electrical PVI without left(More)
AIM To examine the secular trend for body height in schoolchildren in Northeast Attica, Greece. METHODS In 2005 we studied the growth of 4,131 Greek schoolchildren (2,054 boys) aged 5.5-12.6 years. The data were compared with those of a study performed in 1994/95. We also studied the growth of 236 immigrant schoolchildren (95 boys and 141 girls). (More)
INTRODUCTION Robotic navigation (RN) is a novel technology for pulmonary vein isolation (PVI). We investigated the incidence of thermal esophageal injury using RN with commonly used power settings in comparison to manual PVI procedures. methods: Thirty-nine patients underwent circumferential PVI using a 3.5-mm irrigated-tip-catheter. In the manual (n = 25)(More)
AIMS Manual mapping and ablation of right ventricular outflow tract (RVOT) tachycardia may be associated with cardiac perforation and complicated by mechanically induced ventricular extrasystoles (VESs). The aim of this study was to assess remote-controlled magnetic (RCM) mapping and ablation of RVOT ventricular tachycardia (VT)/VES utilizing a soft(More)
AIMS Recently, the novel endoscopic ablation system (EAS) was introduced and proved its potential for successful pulmonary vein isolation (PVI) in patients suffering from paroxysmal atrial fibrillation (PAF). The current study will investigate the impact of pulmonary vein (PV) anatomy assessed by pre-interventional cardiac magnetic resonance imaging (CMRI)(More)
BACKGROUND A persistent left superior vena cava (PLSVC) is an uncommon cardiac anomaly. OBJECTIVE The purpose of this study was to assess the complication rate and procedural outcome in patients with PLSVC who were referred for catheter ablation of atrial fibrillation (AF). METHODS Between September 2006 and February 2009, seven patients referred for(More)
BACKGROUND Lack of an irrigated-tip magnetic catheter has limited the role of remote-controlled magnetic navigation (Niobe II, Stereotaxis) for catheter ablation of atrial fibrillation (AF). METHODS AND RESULTS A novel 3.5-mm-tip irrigated magnetic catheter (group 1, Thermocool Navistar RMT, Biosense Webster) was used for 3D left atrial reconstruction(More)
BACKGROUND Pulmonary vein isolation (PVI) is an established treatment option for atrial fibrillation (AF). Recently the novel endoscopic ablation system (EAS) was introduced and proved potential for successful acute PVI. OBJECTIVE This study sought to investigate the 1-year follow-up results after EAS-based PVI. METHODS A total of 40 patients (20(More)
BACKGROUND Cryoballoon pulmonary vein isolation (PVI) currently requires a long cryoballoon application (CBA) time of 240 to 300 seconds, thus repeated ineffective CBA prolongs procedure duration. We hypothesized that cryoballoon temperature (CBT) may be used to discriminate between effective and ineffective CBA during freezing. OBJECTIVE This study(More)