6,428 results match your criteria Journal of Cardiovascular Electrophysiology[Journal]


The Clinical Impact of the Left Atrial Posterior Wall Lesion Formation by the Cryoballoon Application for Persistent Atrial Fibrillation: Feasibility and Clinical Implications.

J Cardiovasc Electrophysiol 2019 Feb 14. Epub 2019 Feb 14.

Heart Center, Japan Red Cross Yokohama City Bay Hospital, Yokohama.

Introduction: The left atrial (LA) posterior wall (LAPW) has been targeted to improve clinical outcomes in patients with persistent atrial fibrillation (PersAF). This study aimed to investigate the feasibility, safety, and clinical implications of CB applications on the LAPW to accomplish electrical isolation (EI) of the LAPW with cryoballoon (CB).

Methods: A total of 100 patients (males: 84, mean age: 64±10 years) with PersAF were enrolled. Read More

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http://dx.doi.org/10.1111/jce.13879DOI Listing
February 2019
1 Read

Simultaneous occurrence of peri-mitral flutter using an epicardial connection and pulmonary vein trigger driving atrial fibrillation in the posterior wall of the left atrium.

J Cardiovasc Electrophysiol 2019 Feb 14. Epub 2019 Feb 14.

Clinica Montevergine, Mercogliano (AV), Italy.

It is not unusual to find areas of organized atrial activity in the left atrium during atrial fibrillation but when it happens these rhythms are mostly interrelated. Our report shows that extensive ablation can dissociate different portions of the same chamber to the point that simultaneous occurring atrial flutter and atrial fibrillation can be studied and terminated independently from each other This article is protected by copyright. All rights reserved. Read More

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http://dx.doi.org/10.1111/jce.13877DOI Listing
February 2019
1 Read

A left common pulmonary vein: Anatomical variant predicting good outcomes of repeat catheter ablation for atrial fibrillation.

J Cardiovasc Electrophysiol 2019 Feb 14. Epub 2019 Feb 14.

Department of Cardiology, Shaoxing People's Hospital, Zhejiang University School of Medicine, Shaoxing, China.

Introduction: A left common pulmonary vein (LCPV) is a common anatomical variant in atrial fibrillation (AF) patients. Whether an LCPV influences outcomes of repeated radiofrequency catheter ablation (RFCA) for AF has not been elucidated.

Methods: From a prospectively collected database, we enrolled 154 patients who received repeated RFCA for recurrent AF after the initial RFCA (56 ± 9 years, 72% paroxysmal AF, 32 patients with an LCPV, and 122 patients with typical left-sided pulmonary veins [PVs]). Read More

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http://dx.doi.org/10.1111/jce.13876DOI Listing
February 2019
1 Read

Does Cryomapping Warrant a Safety in the Subsequent Therapeutic Cryablation?

Authors:
Ken Okumura

J Cardiovasc Electrophysiol 2019 Feb 14. Epub 2019 Feb 14.

Division of Cardiology, Saiseikai Kumamoto Hospital Cardiovascular Center, Kumamoto, Japan.

Adenosine- or adenosine triphosphate (ATP)-sensitive atrial tachycardia originating from the vicinity of the atrioventricular (AV) node was first described by Iesaka et al. This article is protected by copyright. All rights reserved. Read More

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http://dx.doi.org/10.1111/jce.13878DOI Listing
February 2019

Low lead one ratio predicts clinical outcomes in left bundle branch block.

J Cardiovasc Electrophysiol 2019 Feb 10. Epub 2019 Feb 10.

Department of Health Services, University of Washington, Seattle, Washington.

Introduction: We evaluated the association between a novel electrocardiographic (ECG) marker of late, rightward electrocardiographic forces (termed the lead one ratio [LOR]), and left ventricular ejection fraction (LVEF), myocardial scar, and clinical outcomes in patients with left bundle branch block (LBBB).

Methods And Results: LOR was calculated in patients with LBBB from a derivation cohort (n = 240) and receiver operator characteristic curves identified optimal threshold values for predicting myocardial scar and LVEF less than 35%. An independent validation cohort of patients with LBBB (n = 196) was used to test the association of LOR with the myocardial scar, LVEF, and the likelihood of death, heart transplant or left ventricular assist device (LVAD) implantation. Read More

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http://dx.doi.org/10.1111/jce.13875DOI Listing
February 2019
1 Read

Coronary sinus occlusion after mitral isthmus linear ablation: Unrecognized silent complication after catheter ablation.

J Cardiovasc Electrophysiol 2019 Feb 8. Epub 2019 Feb 8.

Department of Cardiovascular Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan.

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http://dx.doi.org/10.1111/jce.13873DOI Listing
February 2019
1 Read

Successful transcoronary ethanol ablation of a ventricular tachycardia originating from the crux of the heart.

J Cardiovasc Electrophysiol 2019 Feb 8. Epub 2019 Feb 8.

Heart Center, Huntsville Hospital, Huntsville, Alabama.

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http://dx.doi.org/10.1111/jce.13874DOI Listing
February 2019
1 Read

An unusual form of pre-excitation.

J Cardiovasc Electrophysiol 2019 Feb 6. Epub 2019 Feb 6.

Department of Cardiology, Indira Gandhi Government Hospital, Puducherry, India.

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http://dx.doi.org/10.1111/jce.13871DOI Listing
February 2019
1 Read

Keeping a finger on the pulse of atrial fibrillation.

Authors:
Rod Passman

J Cardiovasc Electrophysiol 2019 Feb 6. Epub 2019 Feb 6.

Departments of Medicine and Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.

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http://dx.doi.org/10.1111/jce.13866DOI Listing
February 2019

Iterative navigation of multipole diagnostic catheters to locate repeating-pattern atrial fibrillation drivers.

J Cardiovasc Electrophysiol 2019 Feb 6. Epub 2019 Feb 6.

Computer and Electrical Engineering and Computer Science, Florida Atlantic University, Boca Raton, Florida.

Introduction: Targeting repeating-pattern atrial fibrillation (AF) sources (reentry or focal drivers) can help in patient-specific ablation therapy for AF; however, the development of reliable and accurate tools for locating such sources remains a major challenge. We describe iterative catheter navigation (ICAN) algorithm to locate AF drivers using a conventional circular Lasso catheter.

Methods And Results: At each step, the algorithm analyzes 10 bipolar electrograms recoded at a given catheter location and the history of previous catheter movements to determine if the source is inside the catheter loop. Read More

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http://dx.doi.org/10.1111/jce.13872DOI Listing
February 2019
2 Reads

Double trouble within the coronary sinus: What is the mechanism?

J Cardiovasc Electrophysiol 2019 Feb 6. Epub 2019 Feb 6.

Service de Cardiologie, Hôpital Privé Les Franciscaines, Nîmes, France.

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http://dx.doi.org/10.1111/jce.13870DOI Listing
February 2019
2 Reads

A novel octaray multielectrode catheter for high-resolution atrial mapping: Electrogram characterization and utility for mapping ablation gaps.

J Cardiovasc Electrophysiol 2019 Feb 5. Epub 2019 Feb 5.

Cardiovascular Division, Department of Medicine, Deaconess Medical Center, Harvard Medical School, Harvard-Thorndike Electrophysiology Institute, Boston, Massachusetts.

Introduction: Multielectrode mapping catheters improve the ability to map within the heterogeneous scar. A novel Octaray catheter with eight spines and 48 electrodes may further improve the speed and resolution of atrial mapping. The aims of this study were to (1) establish the Octaray's baseline mapping performance and electrogram (EGM) characteristics in healthy atria and to (2) determine its utility for identifying gaps in a swine model of atrial ablation lines. Read More

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http://dx.doi.org/10.1111/jce.13867DOI Listing
February 2019
2 Reads

Renal sympathetic denervation improves clinical outcomes in patients undergoing catheter ablation for atrial fibrillation and history of hypertension: A meta-analysis.

J Cardiovasc Electrophysiol 2019 Feb 5. Epub 2019 Feb 5.

Division of Cardiovascular diseases, Kansas City Heart Rhythm Institute, Kansas City, KS.

Background: Currently, there is limited data regarding the impact of adjunctive renal sympathetic denervation (RSDN) with pulmonary vein isolation (PVI) in hypertensive patients with atrial fibrillation (AF).

Methods: A comprehensive literature search for studies comparing RSDN + PVI vs PVI alone for AF and history of hypertension until 1 January 2019 was performed. The results were expressed as risk ratio (RR) for the categorical variables and mean difference (MD) for the continuous variables with 95% confidence intervals (CIs). Read More

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http://dx.doi.org/10.1111/jce.13868DOI Listing
February 2019
2 Reads

Recurrent ventricular tachycardia after catheter ablation in arrhythmogenic right ventricular cardiomyopathy: Scar progression or ineffective ablation?

J Cardiovasc Electrophysiol 2019 Feb 4. Epub 2019 Feb 4.

Division of Cardiovascular Medicine, Department of Medicine, University of Arizona College of Medicine, Tucson, Arizona.

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http://dx.doi.org/10.1111/jce.13861DOI Listing
February 2019
1 Read

Compound motor action potential guided 240 seconds plus bonus Freeze for safe and durable left atrial appendage isolation in patient with recurrent persistent atrial fibrillation: How to isolate the appendage with cryo-balloon (The CMAP guided ICE-B protocol).

Authors:
Pietro Turco

J Cardiovasc Electrophysiol 2019 Feb 2. Epub 2019 Feb 2.

Chief of Electrophysiology Laboratory, Cardiology Unit, Clinica Sancarlo, Paderno Dugnano, Milano, Italy.

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http://dx.doi.org/10.1111/jce.13852DOI Listing
February 2019

Characteristics of ventricular intracardiac electrograms of ventricular tachycardias originating from the epicardia in patients with an implantable cardioverter defibrillator.

J Cardiovasc Electrophysiol 2019 Feb 1. Epub 2019 Feb 1.

Department of Cardiology, Tokyo Medical and Dental, University, Tokyo, Japan.

Introduction: While characteristic waveforms of 12-lead electrocardiograms have been reported to predict the epicardial origin of ventricular tachycardia (VT), it has not been fully examined whether ventricular intracardiac electrograms (VEGMs) recorded from the implantable cardioverter defibrillator (ICD) via telemetry can determine the origin of VT or not. The aim of this study was to investigate the VEGM characteristics of VT originating from the epicardia.

Method And Results: Intracardiac VEGMs of the induced VTs, with detected sites of origin during the VT study, were recorded in 15 (23 VTs) of the 46 patients. Read More

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http://dx.doi.org/10.1111/jce.13854DOI Listing
February 2019

"As Needed" nonvitamin K antagonist oral anticoagulants for infrequent atrial fibrillation episodes following atrial fibrillation ablation guided by diligent pulse monitoring: A feasibility study.

J Cardiovasc Electrophysiol 2019 Feb 1. Epub 2019 Feb 1.

Department of Medicine, Electrophysiology Section, Cardiovascular Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania.

Introduction: After atrial fibrillation (AF) ablation, oral anticoagulation (OAC) is recommended if stroke risk as assessed by CHA DS -VASc score is high. However, patients without AF are often reluctant to take daily OAC. We describe outcome using as needed nonvitamin K antagonist (NOACs) guided by pulse monitoring to detect AF following successful ablation. Read More

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http://dx.doi.org/10.1111/jce.13859DOI Listing
February 2019
1 Read

Characteristics of recurrent ventricular tachyarrhythmia after catheter ablation in patients with arrhythmogenic right ventricular cardiomyopathy.

J Cardiovasc Electrophysiol 2019 Jan 30. Epub 2019 Jan 30.

Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.

Background: The reason for recurrence of ventricular arrhythmia (VA) after catheter ablation in patients with arrhythmogenic right ventricular cardiomyopathy (ARVC) is not clear.

Methods: In this study, 91 ARVC patients (age, 47 ± 13 years; 47 men) who underwent catheter ablation for drug-refractory ventricular arrhythmia (VA) were enrolled. The patients were categorized into single or multiple procedures (n = 28). Read More

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http://doi.wiley.com/10.1111/jce.13853
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http://dx.doi.org/10.1111/jce.13853DOI Listing
January 2019
3 Reads
2.958 Impact Factor

Demonstration of an extension of the ligament of Marshall to the left atrial posterior wall.

Authors:
Takumi Yamada

J Cardiovasc Electrophysiol 2019 Jan 30. Epub 2019 Jan 30.

Division of Cardiovascular Disease, University of Alabama, Birmingham, Alabama.

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http://dx.doi.org/10.1111/jce.13865DOI Listing
January 2019

Concurrent electrocardiographic repolarization abnormalities: What is the underlying channelopathy?

J Cardiovasc Electrophysiol 2019 Jan 30. Epub 2019 Jan 30.

Arrhythmia and EP Research Center, IRCCS Humanitas Research & University Hospital, Milan, Italy.

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http://dx.doi.org/10.1111/jce.13864DOI Listing
January 2019
2 Reads

Multiple ICD shocks in a patient with dilated cardiomyopathy: What is the mechanism?

J Cardiovasc Electrophysiol 2019 Jan 28. Epub 2019 Jan 28.

Department of Cardiology, Cardiac Electrophysiology Unit, University Hospital 12 de Octubre, Madrid, Spain.

We present the case of a 45-year-old male patient with dilated cardiomyopathy who suffers from multiple implantable cardioverter defibrillator (ICD) shocks. The analysis of the ICD tracing and the electrophysiological study allows to conclude that bundle branch re-entrant tachycardia is the most likely diagnosis, even in absence of conduction abnormalities in his basal electrocardiography. Read More

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http://dx.doi.org/10.1111/jce.13862DOI Listing
January 2019
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The relationship between the quantitative extent of late gadolinium enhancement and burden of nonsustained ventricular tachycardia in hypertrophic cardiomyopathy: A delayed contrast-enhanced magnetic resonance study.

J Cardiovasc Electrophysiol 2019 Jan 24. Epub 2019 Jan 24.

Division of Cardiology, Peter Munk Cardiac Centre, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada.

Objectives: To examine the relationship between late gadolinium enhancement (LGE) extent and nonsustained ventricular tachycardia (NSVT) characteristics in patients with hypertrophic cardiomyopathy (HCM).

Background: NSVT has been shown to be independently associated with sudden cardiac death (SCD) in HCM. Previous studies have found LGE on cardiac magnetic resonance (CMR) to be independently associated with NSVT. Read More

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http://doi.wiley.com/10.1111/jce.13855
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http://dx.doi.org/10.1111/jce.13855DOI Listing
January 2019
7 Reads

Electroporation of epicardial autonomic ganglia: Safety and efficacy in medium-term canine models.

J Cardiovasc Electrophysiol 2019 Jan 24. Epub 2019 Jan 24.

Division of Pediatric Cardiology, Academic Medical Center, Amsterdam, The Netherlands.

Background: Endocardial radiofrequency ablation of epicardial ganglionic plexus (GP) for atrial fibrillation (AF) is complicated by myocardial damage.

Objectives: We hypothesized that an epicardial approach with a novel nitinol catheter system capable of causing irreversible electroporation (IRE) with direct current (DC) could selectively and permanently destroy GP without collateral myocardial injury.

Methods: Acute studies and medium-term terminal studies (mean survival, 1137 days) were performed with seven dogs. Read More

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http://dx.doi.org/10.1111/jce.13860DOI Listing
January 2019

Synergy of pulmonary vein isolation and catheter renal denervation in atrial fibrillation complicated with uncontrolled hypertension: Mapping the renal sympathetic nerve and pulmonary vein (the pulmonary vein isolation plus renal denervation strategy)?

J Cardiovasc Electrophysiol 2019 Jan 24. Epub 2019 Jan 24.

Cardioangiologisches Centrum Bethanien (CCB) Frankfurt am Main, Frankfurt Academy For Arrhythmias (FAFA), Medizinische Klinik III, Agaplesion Markus Krankenhaus, Frankfurt, Germany.

Introduction: Disturbance of sympathetic and vagal nervous system participates in the pathogenesis of hypertension and atrial fibrillation (AF). Renal denervation (RDN) can modulate autonomic nervous activity and reduce blood pressure (BP) in hypertensive patients. We aimed to evaluate the effect of RDN combined with pulmonary vein isolation (PVI) in patients with AF and hypertension. Read More

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http://doi.wiley.com/10.1111/jce.13858
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http://dx.doi.org/10.1111/jce.13858DOI Listing
January 2019
5 Reads

Electrophysiological characteristics of the earliest activation site in idiopathic right ventricular outflow tract arrhythmias under mini-electrode mapping.

J Cardiovasc Electrophysiol 2019 Jan 24. Epub 2019 Jan 24.

Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, Key Laboratory on Assisted Circulation, Ministry of Health, Guangzhou, P.R. China.

Introduction: Right ventricular outflow tract ventricular arrhythmias (RVOT VAs) often originate in the voltage-transitional zone. The target electrogram could be compromised by the architecture of the roving catheter. Mini-electrodes could improve the mapping resolution, especially in low-voltage areas. Read More

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http://dx.doi.org/10.1111/jce.13856DOI Listing
January 2019
2 Reads
2.958 Impact Factor

Leadless pacemaker implant in patients with pre-existing infections: Results from the Micra postapproval registry.

J Cardiovasc Electrophysiol 2019 Jan 19. Epub 2019 Jan 19.

Division of Cardiology, Duke University Medical Center and Duke Clinical Research Institute, Durham, North Carolina.

Introduction: Leadless pacemakers may provide a safe and attractive pacing option to patients with cardiac implantable electronic device (CIED) infection. We describe the characteristics and outcomes of patients with a recent CIED infection undergoing Micra implant attempt.

Methods And Results: Patients with prior CIED infection and device explant with Micra implant within 30 days, were identified from the Micra post approval registry. Read More

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http://doi.wiley.com/10.1111/jce.13851
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http://dx.doi.org/10.1111/jce.13851DOI Listing
January 2019
9 Reads

Early repolarization and risk of lone atrial fibrillation.

J Cardiovasc Electrophysiol 2019 Jan 19. Epub 2019 Jan 19.

Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.

Introduction: Early repolarization syndrome is a recently proposed condition characterized by an early repolarization pattern in the electrocardiogram (ECG) and ventricular fibrillation in the absence of structural heart abnormalities. Although some studies have suggested that early repolarization is associated with frequency of atrial fibrillation, the association of early repolarization with atrial fibrillation is not well known.

Hypothesis: Early repolarization indicates the substrate for atrial fibrillation in addition to that for ventricular fibrillation. Read More

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http://doi.wiley.com/10.1111/jce.13848
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http://dx.doi.org/10.1111/jce.13848DOI Listing
January 2019
6 Reads

Atrial fibrosis in non-atrial fibrillation individuals and prediction of atrial fibrillation by use of late gadolinium enhancement magnetic resonance imaging.

J Cardiovasc Electrophysiol 2019 Jan 19. Epub 2019 Jan 19.

Comprehensive Arrhythmia Research & Management Center, Salt Lake City, Utah.

Introduction: Besides the traditional concept of atrial fibrillation (AF) perpetuating atrial structural remodeling, there is increasing evidence that atrial fibrosis might precede AF, highlighting the need for better characterization of the fibrotic substrate. We aimed to assess atrial fibrosis by use of late gadolinium enhancement magnetic resonance imaging (LGE-MRI) in non-AF individuals and to identify predisposing risk factors. A second aim was to establish a risk score for the prevalence of AF using atrial fibrosis in addition to established clinical variables. Read More

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http://doi.wiley.com/10.1111/jce.13846
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http://dx.doi.org/10.1111/jce.13846DOI Listing
January 2019
4 Reads

Pacing prescription for cardiac resynchronization therapy: When RV stimulation matters.

J Cardiovasc Electrophysiol 2019 Jan 19. Epub 2019 Jan 19.

Cardiac Bioelectricity Research and Training Center, Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio.

Background: Cardiac resynchronization therapy (CRT) aims to correct delayed left ventricle (LV) activation resulting from left bundle branch block (LBBB). The source of LV activation delay resides in the septum and/or anterior LV. LV pacing, timed with intrinsic right bundle branch (RBB) conduction, may restore "physiological" biventricular activation. Read More

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http://dx.doi.org/10.1111/jce.13850DOI Listing
January 2019

Effects of dofetilide and ranolazine on atrial fibrillatory rate in a horse model of acutely induced atrial fibrillation.

J Cardiovasc Electrophysiol 2019 Jan 19. Epub 2019 Jan 19.

Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Taastrup, Denmark.

Introduction: The atrial fibrillatory rate is a potential biomarker in the study of antiarrhythmic drug effects on atrial fibrillation (AF). The purpose of this study was to evaluate whether dose-dependent changes in the atrial fibrillatory rate can be monitored on surface electrocardiography (ECG) following treatment with dofetilide, ranolazine, and a combination of the two in an acute model of AF in horses.

Methods And Results: Eight horses were subjected to pacing-induced AF on 4 separate days. Read More

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http://dx.doi.org/10.1111/jce.13849DOI Listing
January 2019
1 Read

Catheter ablation of supraventricular tachycardia in patients with dextrocardia and situs inversus.

J Cardiovasc Electrophysiol 2019 Jan 19. Epub 2019 Jan 19.

Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany.

Background: Dextrocardia with situs inversus is a rare cardiac positional anomaly. Catheter ablation procedures performed in this set of patients have not been sufficiently reported.

Methods: A total of 10 patients with dextrocardia and situs inversus who received catheter ablation for supraventricular tachycardia (SVT) were included from a cohort of over 20 000 cases of catheter ablation for SVT in three centers from 2005 to 2016. Read More

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http://dx.doi.org/10.1111/jce.13847DOI Listing
January 2019
3 Reads

Ablation of ventricular arrhythmias with predominant monophasic "R" waves in precordial leads from the left sinus of Valsalva: Electrocardiographic and electrophysiologic characteristics.

J Cardiovasc Electrophysiol 2019 Jan 19. Epub 2019 Jan 19.

State Key Laboratory of Cardiovascular Disease, Arrhythmia Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.

Background: While the left sinus of Valsalva (LSV) is a frequent origin of ventricular arrhythmias (VAs). Uncommonly, VAs with right bundle branch block (RBBB) morphology may be successfully terminated from the LSV.

Objective: We aimed to investigate the electrocardiographic and electrophysiologic characteristics of VAs with RBBB which were successfully eliminated from the LSV. Read More

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http://dx.doi.org/10.1111/jce.13845DOI Listing
January 2019

Cryofreezing catheter ablation of adenosine triphosphate sensitive atrial tachycardia.

J Cardiovasc Electrophysiol 2019 Jan 17. Epub 2019 Jan 17.

Heart Center, Japan Red Cross Yokohama City Bay Hospital, Yokohama, Japan.

Introduction: Adenosine triphosphate (ATP) sensitive atrial tachycardia (AT) has been treated by radiofrequency catheter ablation. Cryofreezing energy has emerged as a novel energy source for catheter ablation. The aim of this study was to investigate the efficacy and safety of cryofreezing ablation for ATP-sensitive AT. Read More

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http://dx.doi.org/10.1111/jce.13844DOI Listing
January 2019
2 Reads

Thromboembolic events and need for anticoagulation therapy following left atrial appendage occlusion in patients with electrical isolation of the appendage.

J Cardiovasc Electrophysiol 2019 Jan 8. Epub 2019 Jan 8.

Department of Interventional Electrophysiology, Scripps Clinic, La Jolla, California.

Introduction: Electrical isolation of the left atrial appendage (LAA) is an important adjunctive ablation strategy in patients with nonparoxysmal atrial fibrillation (AF). Patients who have impaired LAA contractility following isolation may require long-term oral anticoagulant (OAC) therapy irrespective of their CHADS -VASc score. Percutaneous LAA occlusion (LAAO) is a potential alternative to life-long OAC therapy. Read More

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http://doi.wiley.com/10.1111/jce.13838
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http://dx.doi.org/10.1111/jce.13838DOI Listing
January 2019
1 Read

Erratum.

Authors:

J Cardiovasc Electrophysiol 2019 Jan 13;30(1):149. Epub 2018 Dec 13.

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http://dx.doi.org/10.1111/jce.13800DOI Listing
January 2019
1 Read

Cardiac resynchronization therapy reverses severe dyspnea associated with acceleration-dependent left bundle branch block in a patient with structurally normal heart.

J Cardiovasc Electrophysiol 2019 Jan 4. Epub 2019 Jan 4.

St Vincent Medical Group, St Vincent Hospital, Indianapolis, Indiana.

A 55-year-old woman presented with severe dyspnea during acceleration-dependent left bundle branch block (LBBB). Metoprolol initially ameliorated symptoms by preventing the heart rate at which LBBB occurred. Over time LBBB presented at slower heart rates and the patient developed recurrent dyspnea during an activity that correlated with the development of LBBB on event monitors and exercise stress testing. Read More

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http://doi.wiley.com/10.1111/jce.13840
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http://dx.doi.org/10.1111/jce.13840DOI Listing
January 2019
3 Reads

Exit sites on the epicardium rarely subtend critical diastolic path of ischemic VT on the endocardium: Implications for noninvasive ablation.

J Cardiovasc Electrophysiol 2019 Jan 6. Epub 2019 Jan 6.

Division of Cardiology, Peter Munk Cardiac Centre, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada.

Background: Noninvasive electrocardiographic mapping of ventricular tachycardia (VT) and ablation using stereotactic radiotherapy was recently reported. This strategy does not directly evaluate the critical diastolic components and assumes that the epicardial exit site of VT subtends closely over the endocardial mid-diastolic isthmus.

Objective: To determine if the epicardial exit site of VT spatially corresponds to the critical diastolic components of ischemic scar-related VT. Read More

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http://doi.wiley.com/10.1111/jce.13843
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http://dx.doi.org/10.1111/jce.13843DOI Listing
January 2019
11 Reads

The mechanisms of an unusual coronary sinus activation pattern in peri-mitral atrial tachycardia: Analysis with ultra-high resolution mapping.

J Cardiovasc Electrophysiol 2019 Jan 4. Epub 2019 Jan 4.

Department of Cardiovascular Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan.

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http://dx.doi.org/10.1111/jce.13839DOI Listing
January 2019
1 Read

Three-Dimensional Myocardial Scar Characterization from the Endocardium: Usefulness of Endocardial Unipolar Electroanatomic Mapping.

J Cardiovasc Electrophysiol 2019 Jan 4. Epub 2019 Jan 4.

Electrophysiology Section, Hospital of the University of Pennsylvania, Philadelphia, PA, U.S.A.

Epicardial ablation may be required to eliminate ventricular tachycardia (VT) in patients with underlying structural heart disease. The decision to gain epicardial access is frequently based on the suspicion of an epicardial origin for the VT and/or presence of an arrhythmogenic substrate. Epicardial pathology and VT is frequently present in patients with non-ischemic right and/or left cardiomyopathies even in the setting of modest or no endocardial bipolar voltage substrate. Read More

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http://dx.doi.org/10.1111/jce.13842DOI Listing
January 2019
1 Read
2.958 Impact Factor

Arrested development: Variations of pulmonary vein anatomy.

J Cardiovasc Electrophysiol 2019 Jan 4. Epub 2019 Jan 4.

Cardiac Electrophysiology, St. Vincent Medical Group, St. Vincent Hospital, Indianapolis, Indiana.

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http://dx.doi.org/10.1111/jce.13841DOI Listing
January 2019

Intracardiac vs transesophageal echocardiography for percutaneous left atrial appendage occlusion: A meta-analysis.

J Cardiovasc Electrophysiol 2018 Dec 26. Epub 2018 Dec 26.

Structural Heart and Valve Center, Center for Interventional Vascular Therapy, Division of Cardiology, Columbia University Medical Center, New York, New York.

Introduction: Percutaneous left atrial appendage closure (LAAC) is typically performed utilizing transesophageal echocardiography (TEE) and fluoroscopy. Intracardiac echocardiography (ICE) can be a suitable alternative to guide implantation. Given the limited data, we performed a meta-analysis of all studies that compared ICE vs TEE for percutaneous LAAC. Read More

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http://dx.doi.org/10.1111/jce.13820DOI Listing
December 2018
3 Reads
2.958 Impact Factor

Lead perforation extending beyond the pericardium: Can we treat it percutaneously? Poke, pause, pray, and perform.

J Cardiovasc Electrophysiol 2018 Dec 26. Epub 2018 Dec 26.

Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota.

Cardiac implantable electronic devices (CIED) are utilized in increasing number and in heterogeneous populations. With excellent training, checklists, and "muscle memory," the implantation procedure is generally very safe and efficient. Nevertheless, significant and potentially life-threatening complications can occur. Read More

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http://doi.wiley.com/10.1111/jce.13837
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http://dx.doi.org/10.1111/jce.13837DOI Listing
December 2018
1 Read

Excitation of murine cardiac myocytes by nanosecond pulsed electric field.

J Cardiovasc Electrophysiol 2018 Dec 24. Epub 2018 Dec 24.

Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, Virginia.

Introduction: Opening of voltage-gated sodium channels takes tens to hundreds of microseconds, and mechanisms of their opening by nanosecond pulsed electric field (nsPEF) stimuli remain elusive. This study was aimed at uncovering the mechanisms of how nsPEF elicits action potentials (APs) in cardiomyocytes.

Methods And Results: Fluorescent imaging of optical APs (FluoVolt) and Ca -transients (Fluo-4) was performed in enzymatically isolated murine ventricular cardiomyocytes stimulated by 200-nanosecond trapezoidal pulses. Read More

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http://doi.wiley.com/10.1111/jce.13834
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http://dx.doi.org/10.1111/jce.13834DOI Listing
December 2018
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Analysis of reported cases of left main coronary artery injury during catheter ablation: In search of a pattern.

J Cardiovasc Electrophysiol 2018 Dec 22. Epub 2018 Dec 22.

Department of Cardiology, St Vincent de Paul Hospital, Gdynia, Poland.

Introduction: Left main coronary artery (LMCA) injury is a rare but potentially fatal complication of catheter ablation. Due to LMCA large perfusion area, its occlusion is usually a dramatic event.

Methods And Results: Reports of LMCA injury complicating catheter ablations from 1987 to 2018 were searched in electronic databases. Read More

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http://dx.doi.org/10.1111/jce.13833DOI Listing
December 2018
3 Reads

Single-center experience of the FIRM technique to ablate paroxysmal and persistent atrial fibrillation.

J Cardiovasc Electrophysiol 2018 Dec 22. Epub 2018 Dec 22.

St Vincent Medical Group, St Vincent Hospital, Indianapolis, Indiana.

Introduction: Focal impulse and rotor modulation (FIRM)-guided ablation has had mixed results of published success, and most studies have had a follow-up for a year or less. We aimed to study a consecutive group of patients followed for at least 1.5 years, subgrouped into those with an initial FIRM ablation and those with a previous, failed ablation who now received a FIRM guided one, to evaluate for success in each group and factors that might affect success. Read More

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http://dx.doi.org/10.1111/jce.13832DOI Listing
December 2018
2 Reads

Ibutilide for the control of refractory ventricular tachycardia and ventricular fibrillation in patients with myocardial ischemia and hemodynamic instability.

J Cardiovasc Electrophysiol 2018 Dec 22. Epub 2018 Dec 22.

Penn State University Heart and Vascular Institute, Penn State University College of Medicine, The Milton S. Hershey Medical Center, Hershey, Pennsylvania.

Introduction: Recurrent ventricular tachycardia (VT) and ventricular fibrillation (VF) in patients with myocardial ischemia requiring hemodynamic support can be refractory to available antiarrhythmic agents and even to cardioversion and defibrillation. The purpose of this study was to report the effect of intravenous ibutilide in patients with a VT and/or VF storm in the presence of incomplete revascularization requiring hemodynamic support.

Methods And Results: Standard continuous telemetry and frequent 12-lead electrocardiograms were obtained to determine the effect of intravenous Ibutilide in these patients. Read More

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http://dx.doi.org/10.1111/jce.13835DOI Listing
December 2018
1 Read

Mechanisms and management of inappropriate therapy in subcutaneous implantable cardioverter defibrillators.

J Cardiovasc Electrophysiol 2018 Dec 21. Epub 2018 Dec 21.

Electrophysiology and Arrhythmia Service, Cardiology Division, Department of Medicine, Boston Medical Center, Boston, Massachusetts.

Subcutaneous implantable cardioverter defibrillators (S-ICDs) provide reliable defibrillation and have enhanced supraventricular tachycardia discrimination and fewer infection rates compared with traditional transvenous systems. However, inappropriate shocks remain a frequent problem. Herein, we review the various mechanisms of these inappropriate therapies, some of which are unique to S-ICDs, and propose an algorithm for preventing recurrences. Read More

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http://dx.doi.org/10.1111/jce.13831DOI Listing
December 2018
3 Reads

Catheter ablation versus surgical ablation combined with mitral valve surgery for nonparoxysmal atrial fibrillation in patients with moderate mitral regurgitation.

J Cardiovasc Electrophysiol 2018 Dec 21. Epub 2018 Dec 21.

Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China.

Objective: There are scarce comparative data on efficacy and procedural safety between radiofrequency catheter ablation (RFCA) and surgical ablation (SA) combined with mitral valve (MV) surgery for patients with nonparoxysmal atrial fibrillation (AF) and moderate mitral regurgitation (MR).

Methods And Results: This single-center, retrospective, and observational study enrolled 155 consecutive patients with nonparoxysmal AF and moderate MR, of which 98 underwent RFCA and 57 underwent SA combined with MV surgery. Circumferential pulmonary vein ablation, bidirectional block of lines, and disappearance of complex fractionated atrial electrograms were the endpoints of RFCA, while pulmonary vein isolation and left and right atrial incisions were performed in SA. Read More

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http://dx.doi.org/10.1111/jce.13821DOI Listing
December 2018
1 Read
2.958 Impact Factor

Marked T wave abnormality after accessory pathway ablation.

J Cardiovasc Electrophysiol 2018 Dec 21. Epub 2018 Dec 21.

Division of Cardiovascular Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio.

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http://dx.doi.org/10.1111/jce.13830DOI Listing
December 2018