ST segment elevation induced by class IC antiarrhythmic agents: underlying electrophysiologic mechanisms and insights into drug-induced proarrhythmia.

abstract：INTRODUCTION:Pulmonary vein (PV) reconnection is frequent in patients showing atrial fibrillation (AF) recurrence after PV isolation (PVI). Its detection with cardiac magnetic resonance (CMR) may help predict outcome and guide redo procedures. We assessed the relationship between scar on CMR and PV reconnection after c...

journal_title：Journal of cardiovascular electrophysiology

authors： Jefairi NA,Camaioni C,Sridi S,Cheniti G,Takigawa M,Nivet H,Denis A,Derval N,Mathilde Merle,Laurent F,Montaudon M,Sacher F,Hocini M,Haissaguerre M,Jais P,Cochet H

更新日期：2019-05-01 00:00:00

abstract：INTRODUCTION:The aim of this study was to evaluate the efficacy and the impact on quality of life of a new ablative approach to the right atrium in patients with atrial fibrillation (AF). METHODS AND RESULTS:Seventy-four symptomatic patients with paroxysmal (n = 49) or permanent (n = 25) refractory AF underwent radiof...

journal_title：Journal of cardiovascular electrophysiology

authors： Calò L,Lamberti F,Loricchio ML,Castro A,Shpun S,Boggi A,Pandozi C,Santini M

更新日期：2004-01-01 00:00:00

abstract：BACKGROUND:Perforation during catheter procedures in either the atrium or ventricle is relatively uncommon, but potentially fatal if tamponade ensues. This study analyzes the occurrence and outcomes of cardiac perforation during catheter-based radiofrequency ablation procedures in the left atrium. METHODS:All patients...

journal_title：Journal of cardiovascular electrophysiology

authors： Bunch TJ,Asirvatham SJ,Friedman PA,Monahan KH,Munger TM,Rea RF,Sinak LJ,Packer DL

更新日期：2005-11-01 00:00:00

abstract：:A 14-year-old girl with a history of recurrent palpitations and documented wide QRS complex tachycardia was referred for electrophysiologic study and catheter ablation. ...

journal_title：Journal of cardiovascular electrophysiology

authors： Arias MA,Puchol A,Pachón M,Martín-Sierra C

更新日期：2019-07-01 00:00:00

abstract：INTRODUCTION:Longer observational time and adenosine challenge have proven to be able to detect pulmonary vein (PV) reconnections. The aim of this study was to assess incidence of spontaneous and adenosine-induced PV reconnection after ablation with second-generation cryoballoon (CB-Adv). METHODS AND RESULTS:Fifty con...

journal_title：Journal of cardiovascular electrophysiology

authors： Ciconte G,Chierchia GB,DE Asmundis C,Sieira J,Conte G,Juliá J,DI Giovanni G,Wauters K,Baltogiannis G,Saitoh Y,Mugnai G,Catanzariti D,Tondo C,Brugada P

更新日期：2014-08-01 00:00:00

abstract：INTRODUCTION:Many patients with atrial fibrillation (AF) receive amiodarone. Amiodarone-induced hyperthyroidism (AIH) may develop as a complication. We hypothesized that pulmonary vein (PV) isolation in patients with paroxysmal AF and history of AIH may yield a lower success rate. METHODS AND RESULTS:Among 704 patient...

journal_title：Journal of cardiovascular electrophysiology

authors： Mikhaylov EN,Orshanskaya VS,Lebedev AD,Szili-Torok T,Lebedev DS

更新日期：2013-08-01 00:00:00

abstract：INTRODUCTION:Rapid PV activity is critical in initiating and maintaining AF. The underlying substrate responsible for this remains uncertain. We sought to identify if patients with paroxysmal (PAF) and persistent atrial fibrillation (PeAF) have an abnormal substrate within the pulmonary veins (PVs). METHODS AND RESULT...

journal_title：Journal of cardiovascular electrophysiology

authors： Teh AW,Kistler PM,Lee G,Medi C,Heck PM,Spence S,Morton JB,Sanders P,Kalman JM

更新日期：2011-10-01 00:00:00

abstract：BACKGROUND:Hemodynamic instability hinders activation and entrainment mapping during ventricular tachycardia ablation. The Impella 2.5 microaxial flow device (MFD; Abiomed Inc., Danvers, MA, USA) is used to prevent hemodynamic instability during electrophysiologic study. However, electromagnetic interference (EMI) gene...

journal_title：Journal of cardiovascular electrophysiology

authors： Vaidya VR,Desimone CV,Madhavan M,Noheria A,Shahid M,Walters J,Ladewig DJ,Mikell SB,Johnson SB,Suddendorf SH,Asirvatham SJ

更新日期：2014-07-01 00:00:00

abstract：:A 64-year-old man with atrial tachycardia (AT) 3 years after a superior vena cava (SVC) isolation for atrial fibrillation underwent electrophysiologic testing. SVC mapping with a basket catheter revealed a more frequent activation in the SVC than in either of the atria during the AT and consequently the recovered cond...

journal_title：Journal of cardiovascular electrophysiology

authors： Yamada T,Murakami Y,Plumb VJ,Kay GN

更新日期：2006-11-01 00:00:00

abstract：INTRODUCTION:Cryothermal, HIFU, and laser catheter-based balloon technologies have been developed to simplify ablation for AF. Initial enthusiasm for their widespread use has been dampened by phrenic nerve (PN) injury. The interaction between PN and pulmonary vein (PV) geometry contributing to PN injury is unclear. ME...

journal_title：Journal of cardiovascular electrophysiology

authors： Okumura Y,Henz BD,Bunch TJ,Dalegrave C,Johnson SB,Packer DL

更新日期：2009-10-01 00:00:00

abstract：:A patient with congenital complete heart block underwent implantation of a dual-chamber pacemaker. He presented to the emergency room with fatigue and was found to be in atrial flutter. Device interrogation revealed undersensing of 5 mV flutter waves at a programmed sensitivity of 0.5 mV. Due to undersensing, mode swi...

journal_title：Journal of cardiovascular electrophysiology

authors： Kalahasty G,Kenigsberg DN,Wood MA,Ellenbogen KA

更新日期：2006-11-01 00:00:00

abstract：BACKGROUND:The purpose of this study was to assess how well acute procedural outcomes predict the clinical outcome of catheter ablation of premature ventricular complexes (PVCs). METHODS:A consecutive series of 50 patients (28 women, age: 51 ± 13 years) with frequent PVCs was referred for PVC ablation. Acute failure w...

journal_title：Journal of cardiovascular electrophysiology

authors： Baser K,Bas HD,Belardi D,Yokokawa M,Good E,Latchamsetty R,Morady F,Bogun F

更新日期：2014-06-01 00:00:00

abstract：:Left atrial tachycardias (ATs) most commonly occur after catheter or surgical ablation of atrial fibrillation and in patients with atrial myopathies. Pre-existing scar in the left atrium (LA) can result in complex circuits, sometimes with narrow channels that can be detected with high-resolution mapping. The most comm...

journal_title：Journal of cardiovascular electrophysiology

authors： Markowitz SM,Thomas G,Liu CF,Cheung JW,Ip JE,Lerman BB

更新日期：2019-12-01 00:00:00

abstract：INTRODUCTION:The current practice of percutaneous subxiphoid needle access to the "healthy" pericardial sac has significant limitations. We sought to examine the feasibility of a novel toolkit designed to improve this procedure. METHODS AND RESULTS:The toolkit included a pericardial access needle and a virtual imaging...

journal_title：Journal of cardiovascular electrophysiology

authors： Ludwig DR,Menon PG,Fill B,Gartner M,Schwartzman D

更新日期：2015-05-01 00:00:00

abstract：BACKGROUND:The presence of a single left superior vena cava in the absence of complex congenital heart disease is uncommon, and, in the absence of hemodynamic consequences, it would not be expected to result in cardiovascular signs or symptoms. Single case reports and our anecdotal experience suggested to us that this ...

journal_title：Journal of cardiovascular electrophysiology

authors： Ratnasamy C,Idriss SF,Carboni MP,Kanter RJ

更新日期：2009-02-01 00:00:00

abstract：BACKGROUND:Current transcatheter ablation of ventricular tachycardia (VT) techniques is limited in part by its invasive nature and superficial depth of ablation lesions. OBJECTIVES:This study was aimed at evaluating the feasibility of targeted ablation of cardiac tissues using high-intensity focused ultrasound (HIFU) ...

journal_title：Journal of cardiovascular electrophysiology

authors： Lü F,Huang W,Benditt DG

更新日期：2018-05-01 00:00:00

abstract：INTRODUCTION:This study investigated a hybrid approach to reduce the atrial defibrillation threshold (ADFT) by determining the effect of a single linear radiofrequency ablation (RFA) lesion on both the ADFT and activation patterns during atrial fibrillation (AF). METHODS AND RESULTS:In 18 open chest sheep (45 to 57 kg...

journal_title：Journal of cardiovascular electrophysiology

authors： White JB,Fotuhi PC,Pedoto RW,Chattipakorn N,Rogers JM,Ideker RE

更新日期：2001-04-01 00:00:00

abstract：:Dual chamber pacemakers have inbuilt advanced safety systems such as ventricular safety standby (crosstalk detection) to prevent ventricular oversensing resulting in inappropriate pacing inhibition. We describe a case where this safety mechanism does not reliably work and the management required to rectify the situati...

journal_title：Journal of cardiovascular electrophysiology

authors： Haldar SK,Steed B,Watkins S,Nair K

更新日期：2017-05-01 00:00:00

abstract：INTRODUCTION:Frequent premature ventricular complexes (PVCs) can lead to symptoms, such as cardiomyopathy and increased mortality. Beta-blockers are recommended as first-line therapy to reduce PVC burden; however, the response is unpredictable. The objective of this study is to determine whether PVC diurnal-variability...

journal_title：Journal of cardiovascular electrophysiology

authors： Hamon D,Swid MA,Rajendran PS,Liu A,Boyle NG,Shivkumar K,Bradfield JS

更新日期：2019-06-01 00:00:00

abstract：:Ablation procedures for atrial fibrillation have become an established and increasingly used option for managing patients with symptomatic arrhythmia. The anatomic structures relevant to the pathogenesis of atrial fibrillation and ablation procedures are varied and include the pulmonary veins, other thoracic veins, th...

journal_title：Journal of cardiovascular electrophysiology

authors： Macedo PG,Kapa S,Mears JA,Fratianni A,Asirvatham SJ

更新日期：2010-07-01 00:00:00

abstract：INTRODUCTION:Paroxysmal atrial fibrillation (AF) may be triggered by intermittent atrial tachycardia, and ultimately lead to persistent AF. However, the mechanisms by which intermittent atrial tachycardia promotes sustained AF are not well understood. METHODS AND RESULTS:Eight sheep were chronically implanted with 2 p...

journal_title：Journal of cardiovascular electrophysiology

authors： Monigatti-Tenkorang J,Jousset F,Pascale P,Vesin JM,Ruchat P,Fromer M,Narayan SM,Pruvot E

更新日期：2014-04-01 00:00:00

abstract：INTRODUCTION:As treatment options for ventricular tachycardia (VT) continue to evolve, the use of radiofrequency catheter ablation is rapidly expanding. However, in the presence of multiple morphologies of VT, achieving successful results may seem less likely. We report two patients with multiple morphologies of VT who...

journal_title：Journal of cardiovascular electrophysiology

authors： Underwood RD,Deshpande SS,Biehl M,Cowan M,Akhtar M,Jazayeri MR

更新日期：1995-11-01 00:00:00

abstract：INTRODUCTION:We present a novel contact fluorescence imaging (CFI) approach to monitor transmembrane potentials in monolayers of cultured neonatal rat ventricular cells. We apply CFI to demonstrate, for the first time, long-term recordings as well as electrical induction and termination of reentrant activity in this in...

journal_title：Journal of cardiovascular electrophysiology

authors： Entcheva E,Lu SN,Troppman RH,Sharma V,Tung L

更新日期：2000-06-01 00:00:00

abstract：:Ischemic preconditioning is a phenomenon whereby exposure of the myocardium to a brief episode of ischemia and reperfusion markedly reduces tissue necrosis induced by a subsequent prolonged ischemia. Therefore, it is hoped that elucidation of the mechanism of preconditioning will yield therapeutic strategies capable o...

journal_title：Journal of cardiovascular electrophysiology

authors： Baines CP,Cohen MV,Downey JM

更新日期：1999-05-01 00:00:00

abstract：:Atrial flutter is due to large single reentrant loops, typically oriented around the caval veins and a line of functional conduction block in between. These reentrant circuits can easily be terminated by properly timed extra beats colliding in the antidromic direction with the reentrant orthodromic wavefront and being...

journal_title：Journal of cardiovascular electrophysiology

authors： Schoels W,Becker R

更新日期：1998-08-01 00:00:00

abstract：INTRODUCTION:Complex fractionated atrial electrograms (CFAEs) are a substrate modification target in patients with atrial fibrillation (AF). However, whether CFAEs can be also arrhythmogenic grounds of atrial tachycardia (AT) presenting after AF ablation remains to be determined. We investigated the relationship betwee...

journal_title：Journal of cardiovascular electrophysiology

authors： Ban JE,Chen YL,Park HC,Lee HS,Lee DI,Choi JI,Lim HE,Park SW,Kim YH

更新日期：2014-02-01 00:00:00

abstract：BACKGROUND:Reentry utilizing cavotricuspid isthmus (CTI) is accepted as the mechanism underlying typical atrial flutter (AFLT). However, it is unclear how the right atrial (RA) posterior wall (PW) participates in AFLT circuit. We sought to investigate this by using noncontact electroanatomic mapping. METHODS:Fifteen p...

journal_title：Journal of cardiovascular electrophysiology

authors： Dixit S,Lavi N,Robinson M,Riley MP,Callans DJ,Marchlinski FE,Lin D

更新日期：2011-04-01 00:00:00

abstract：INTRODUCTION:It is the hypothesis of this article that the onset of fibrillation following a coronary artery occlusion is a direct consequence of the spatial inhomogeneity of chemical processes that occur following the occlusion. In particular, the localized increase of extracellular potassium and decrease of ATP avail...

journal_title：Journal of cardiovascular electrophysiology

authors： Keener JP

更新日期：2003-11-01 00:00:00

abstract：INTRODUCTION:Complex fractionated atrial electrograms (CFAE) may identify critical sites for perpetuation of atrial fibrillation (AF) and provide useful targets for ablation. Current assessment of CFAE is subjective; automated detection algorithms may improve reproducibility, but their utility in guiding ablation has n...

journal_title：Journal of cardiovascular electrophysiology

authors： Porter M,Spear W,Akar JG,Helms R,Brysiewicz N,Santucci P,Wilber DJ

更新日期：2008-06-01 00:00:00

abstract：INTRODUCTION:Epicardial catheter ablation is increasingly used to treat arrhythmias with an epicardial component. Nevertheless, percutaneous epicardial access remains associated with a significant risk of major complications. Developing a technology capable of confirming proper placement within the pericardial space co...

journal_title：Journal of cardiovascular electrophysiology

authors： Burkland DA,Ganapathy AV,John M,Greet BD,Saeed M,Rasekh A,Razavi M

更新日期：2017-12-01 00:00:00