38,121 results match your criteria Catheter Ablation


Complications after 100 sessions of cone-beam computed tomography-guided lung radiofrequency ablation: a single-center, retrospective experience.

Int J Hyperthermia 2020 ;37(1):763-771

Department of Cardiovascular and Thoracic Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.

To evaluate complications after consecutive 100 sessions of cone-beam computed tomography (CBCT)-guided radiofrequency ablation (RFA) of lung tumors A retrospective study was conducted from January 2016 and October 2018. All procedures were performed using a CBCT virtual navigation guidance system, combining three-dimentional CBCT, needle planning software, and real-time fluoroscopy. Complications were evaluated for each RFA session in 63 consecutive patients (31 male, 32 female; mean age 58. Read More

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http://dx.doi.org/10.1080/02656736.2020.1784472DOI Listing
January 2020

Electrocardiographic Localization of Ventricular Arrhythmias Successfully Ablated from the Distal Great Cardiac Vein.

J Cardiovasc Electrophysiol 2020 Jul 3. Epub 2020 Jul 3.

Northwell Health, Division of Electrophysiology, Manhasset, New York, USA.

Background: Idiopathic ventricular arrhythmias (IVA) from the left ventricular (LV) summit may be successfully ablated from the distal great cardiac vein (dGCV). Using a 12-lead electrocardiogram (ECG) to localize IVAs that can be ablated from the dGCV is valuable for ablation planning.

Objective: To determine if a "w" wave, a notch in the q wave in lead I, and other ECG features can identify IVAs that can be successfully ablated from the dGCV. Read More

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http://dx.doi.org/10.1111/jce.14650DOI Listing

Single-shot cryoablation of an epicardial inferoparaseptal accessory pathway: a case report.

Eur Heart J Case Rep 2020 Jun 17;4(3):1-6. Epub 2020 Apr 17.

Department of Heart Rhythm and Conduction Disorder, National Medical Research Center for Preventive Medicine, Petroverigskiy Lane 10-3, Moscow 101000, Russia.

Background: Catheter ablation (CA) of epicardial accessory pathways (APs) can be performed via the coronary sinus (CS) system. Variable CS anatomy with complications of former CA procedures inside the CS venous system may require using alternative CA approach and technology.

Case Summary: We report the case of a 23-year-old man with Wolff-Parkinson-White syndrome and history of aborted sudden cardiac death (SCD) and unsuccessful previous AP radiofrequency ablation (RFA). Read More

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http://dx.doi.org/10.1093/ehjcr/ytaa068DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7319811PMC

Postoperative supraventricular tachycardia and polymorphic ventricular tachycardia due to a novel SCN5A variant: a case report of a rare comorbidity that is difficult to diagnose.

BMC Cardiovasc Disord 2020 Jul 2;20(1):315. Epub 2020 Jul 2.

Center for Epidemiologic Research in Asia, Shiga University of Medical Science, Otsu, 520-2192, Japan.

Background: Loss-of-function mutations of human cardiac sodium channel gene SCN5A induce a wide range of arrhythmic disorders. Mutation carriers with co-existing conditions such as congenital heart diseases and histories of cardiac surgeries, could develop complex arrhythmic events that are difficult to diagnose.

Case Presentation: A 41-year-old Japanese male with a history of a surgical closure of an ASD presented impairment of consciousness by wide QRS tachycardia. Read More

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http://dx.doi.org/10.1186/s12872-020-01601-2DOI Listing

Association of Atrial Fibrillation Episode Duration With Arrhythmia Recurrence Following Ablation: A Secondary Analysis of a Randomized Clinical Trial.

JAMA Netw Open 2020 Jul 1;3(7):e208748. Epub 2020 Jul 1.

Montreal Heart Institute, Department of Medicine, Université de Montréal, Montréal, Quebec, Canada.

Importance: Contemporary guidelines recommend that atrial fibrillation (AF) be classified based on episode duration, with these categories forming the basis of therapeutic recommendations. While pragmatic, these classifications are not based on pathophysiologic processes and may not reflect clinical outcomes.

Objective: To evaluate the association of baseline AF episode duration with post-AF ablation arrhythmia outcomes. Read More

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http://dx.doi.org/10.1001/jamanetworkopen.2020.8748DOI Listing

Hot balloon vs. cryoballoon ablation for persistent atrial fibrillation: lesion area, efficacy, and safety.

J Cardiovasc Electrophysiol 2020 Jul 1. Epub 2020 Jul 1.

Department of Cardiology, Dokkyo Medical University Saitama Medical Center, Koshigaya, Japan.

Introduction: The clinical efficacy and safety of hot balloon ablation (HBA) for treatment of persistent AF (PerAF) remain unclear. We aimed to evaluate the clinical efficacy and safety of HBA vs. cryoballoon ablation (CBA) as treatment for PerAF. Read More

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http://dx.doi.org/10.1111/jce.14646DOI Listing

A novel local impedance algorithm to guide effective pulmonary vein isolation in AF patients: preliminary experience across different ablation sites from the CHARISMA Pilot Study.

J Cardiovasc Electrophysiol 2020 Jul 1. Epub 2020 Jul 1.

Clinica Montevergine, Mercogliano, AV, Italy.

Introduction: Recently, a novel technology able to measure local tissue impedance (LI) and tissue characteristics has been made available for clinical use. This analysis explores the relationships among LI and generator impedance (GI) parameters in atrial fibrillation (AF) patients. Characterization of LI among different ablation spots and procedural success were also evaluated. Read More

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http://dx.doi.org/10.1111/jce.14647DOI Listing

Impact of Renal Dysfunction on Left Atrial Structural Remodeling and Recurrence After Catheter Ablation for Atrial Fibrillation - A Propensity Score Matching Analysis.

Circ J 2020 Jul 1. Epub 2020 Jul 1.

Department of Cardiovascular Medicine, Saga University.

Background: Renal dysfunction coexists with other known risk factors of left atrial (LA) structural remodeling, expressed as low-voltage zones (LVZs), and the recurrence of atrial fibrillation (AF) after ablation. This study aimed to determine whether renal dysfunction had an independent effect on the presence of LVZs and recurrence after AF ablation, using propensity score (PS) matching analysis.Methods and Results:448 consecutive patients who underwent their initial AF ablation were enrolled. Read More

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http://dx.doi.org/10.1253/circj.CJ-20-0149DOI Listing

Basket catheter-guided ultra-high-density mapping of cardiac arrhythmias: a systematic review and meta-analysis.

Future Cardiol 2020 Jul 1. Epub 2020 Jul 1.

Department of Cardiology, cNEP, Cardiac Neuro- & Electrophysiology Research Group, University Heart & Vascular Center Hamburg, University Hospital Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany.

Ultra-high-density mapping (HDM) is increasingly used for guidance of catheter ablation in cardiac arrhythmias. While initial results are promising, a systematic evaluation of long-term outcome has not been performed so far. A systematic review and meta-analysis was conducted on studies investigating long-term outcome after Rhythmia HDM-guided atrial fibrillation (AF) or atrial tachycardia catheter ablation. Read More

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http://dx.doi.org/10.2217/fca-2020-0032DOI Listing

Re-definition of Blanking Period in Radiofrequency Catheter Ablation of Atrial Fibrillation in the Contact Force Era.

J Cardiovasc Electrophysiol 2020 Jun 30. Epub 2020 Jun 30.

Department of Cardiovascular Medicine, Nippon Medical School.

Introduction: Early recurrence (ER) of atrial fibrillation (AF) is defined as the recurrence of atrial tachyarrhythmias within 3 months after AF ablation, however, this definition is based on data from the era of radiofrequency catheter ablation (RFCA), without contact force (CF) technology. We investigated the significance of ER as a risk factor for late recurrence (LR) in paroxysmal AF (PAF) patients treated with CF and non-CF-guided ablation.

Methods And Results: We studied 395 patients with PAF who underwent RFCA. Read More

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http://dx.doi.org/10.1111/jce.14643DOI Listing

Supraventricular bigeminy originating from the mitral annulus: What is the mechanism?

J Cardiovasc Electrophysiol 2020 Jun 30. Epub 2020 Jun 30.

Division of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.

We present a case of a 67-year-old female with a previous history of a pulmonary vein isolation for paroxysmal atrial fibrillation who presented with supraventricular bigeminy with a constant coupling interval. The supraventricular bigeminy originated from the anterior mitral annulus with initial mapping suggestive of a focal mechanism. However detailed mapping using an ultra-high resolution mapping system (with manual shifting of the annotation window) revealed very low amplitude potentials connecting the previous sinus beat with continuous activation along the mitral annulus. Read More

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http://dx.doi.org/10.1111/jce.14645DOI Listing

[Radio frequency catheter ablation of arrhythmias with low dose X-ray guided by three-dimensional mapping system in 14 children].

Zhonghua Er Ke Za Zhi 2020 Jul;58(7):576-580

Department of Cardiology, Tianjin Children's Hospital, Tianjin 300074, China.

To assess the feasibility and efficacy of radiofrequency catheter ablation (RFCA) of arrhythmias with low dose X-ray in children guided by three-dimensional mapping system. Fourteen children with tachyarrhythmia who were transferred to Tianjin Medical University General Hospital after being hospitalized in Tianjin Children's Hospital and underwent RFCA from April 2017 to May 2018 were included.The results of intraoperative electrophysiological examination, intraoperative X-ray dosage,the immediate success rateand complications of RFCA,and the recurrence during the follow-up for at least 6 months were recorded. Read More

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http://dx.doi.org/10.3760/cma.j.cn112140-20191115-00727DOI Listing

A rare case of narrow QRS tachycardia with "hidden" concealed left-sided accessory pathway.

Herzschrittmacherther Elektrophysiol 2020 Jun 29. Epub 2020 Jun 29.

Department of Internal Medicine I, Sophien- and Hufeland-Hospital Weimar, Henry-van-de-Velde-Straße 2, 99425, Weimar, Germany.

A 54-year-old-woman with narrow QRS tachycardia (heart rate, 210 beats per minute) was admitted to the authors' hospital. Tachycardia terminated after administration of adenosine. The 12-lead electrocardiogram after conversion to sinus rhythm was unremarkable. Read More

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http://dx.doi.org/10.1007/s00399-020-00695-7DOI Listing

Paroxysmal atrial fibrillation with high vs. low arrhythmia burden: atrial remodelling and ablation outcome.

Europace 2020 Jun 29. Epub 2020 Jun 29.

Department of Cardiology, Sint-Jan Hospital, Ruddershove 10, 8000 Bruges, Belgium.

Aims: The relation between atrial tachyarrhythmia (ATA) burden in paroxysmal atrial fibrillation (AF), atrial remodelling, and efficacy of catheter ablation (CA) is unknown. We investigated whether high vs. low-burden paroxysmal AF patients have distinct clinical characteristics or electro-mechanical properties of the left atrium (LA) and whether burden impacts outcome of CA. Read More

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http://dx.doi.org/10.1093/europace/euaa071DOI Listing

Bipolar radiofrequency ablation for ventricular tachycardias originating from the interventricular septum: safety and efficacy in a pilot cohort study.

Heart Rhythm 2020 Jun 26. Epub 2020 Jun 26.

Department of Arrhythmology and Cardiac Electrophysiology, IRCCS San Raffaele Scientific Institute, Milan, Italy.

Background: Interest has grown in recent years for bipolar radiofrequency ablation (B-RFA). However, indications and outcome in patients with ventricular tachycardia (VT) are still to be defined.

Objective: To describe patient selection, safety and effectiveness of B-RFA, in a pilot cohort study of patients with nonischemic dilated cardiomyopathy (NIDCM) and drug-refractory VT. Read More

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http://dx.doi.org/10.1016/j.hrthm.2020.06.025DOI Listing
June 2020
5.076 Impact Factor

Detection of oesophageal course during left atrial catheter ablation.

Indian Pacing Electrophysiol J 2020 Jun 26. Epub 2020 Jun 26.

Department of Medicine, Cardiovascular Section, Saint Eugene Hospital, Rome, Italy.

Background: Oesophageal changes and injuries were recorded after atrial fibrillation(AF) ablation procedures. The reduction of power in the posterior left atrial(LA) wall(closest to the oesophagus) and the monitoring of temperature in the oesophagus(OE) reduced oesophageal injuries. The intracardiac-echocardiography(ICE) with a Cartosound module provides two-dimensional imaging (2D) to assess detailed cardiac anatomy and its relationship with the OE. Read More

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http://dx.doi.org/10.1016/j.ipej.2020.06.003DOI Listing

[Comparative efficacy and safety of enoxaparin followed by warfarin and rivaroxaban monotherapy in the treatment of venous thrombosis in patients after intracardiac catheter interventions].

Ter Arkh 2019 Sep 15;91(9):32-37. Epub 2019 Sep 15.

National Medical Research Center of Cardiology.

Aim: to compare two anticoagulant therapy (ACT) regimens in the treatment of venous thrombosis (VT) in patients after catheter interventions - electrophysiological studies (EFIs) and ablations: enoxaparin followed by warfarin, and rivaroxaban monotherapy.

Materials And Methods: The study included patients from 18 years and older with heart rhythm disorders and planned catheter ablation. When parietal venous thrombosis (VT) were detected at the femoral vein puncture site, all patients were randomly assigned to two treatment groups. Read More

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http://dx.doi.org/10.26442/00403660.2019.09.000282DOI Listing
September 2019

Atrial fibrillation in obesity: Weighing up the evidence for catheter ablation.

Clin Cardiol 2020 Jun 29. Epub 2020 Jun 29.

Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart and Chest Hospital, Liverpool, UK.

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http://dx.doi.org/10.1002/clc.23416DOI Listing

Pulmonary Cusp Positioning of a Right Ventricular Outflow Tract Ventricular Tachycardia in a Pediatric Patient Identified Using Intracardiac Echocardiography.

J Innov Card Rhythm Manag 2020 Jun 15;11(6):4118-4121. Epub 2020 Jun 15.

Children's Hospital of Orange County, Orange, CA, USA.

Ventricular premature beats originating from the right ventricular outflow tract can have myocardial extensions to the pulmonary valve and pulmonary artery. Treatment may consist of catheter ablation combined with the use of three-dimensional mapping to determine the exact location of ectopy. The location of ectopy relative to the pulmonary valve may be hard to ascertain. Read More

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http://dx.doi.org/10.19102/icrm.2020.110605DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7313626PMC

Acute and mid-term outcome of ethanol infusion of vein of Marshall for the treatment of perimitral flutter.

Europace 2020 Jun 29. Epub 2020 Jun 29.

Bordeaux University Hospital (CHU), Cardiac Electrophysiology and Cardiac Stimulation Team, CHU Bordeaux, IHU Lyric, Université de Bordeaux, Avenue de Magellan, 33604 Bordeaux, France.

Aims : We hypothesized that an epicardial approach using ethanol infusion in the vein of Marshall (EIVOM) may improve the result of ablation for perimitral flutter (PMF).

Methods And Results : We studied 103 consecutive patients with PMF undergoing high-resolution mapping. The first 71 were treated with radiofrequency (RF) ablation alone (RF-group), and the next 32 underwent EIVOM followed by RF on the endocardial and epicardial mitral isthmus (EIVOM/RF-group). Read More

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http://dx.doi.org/10.1093/europace/euaa137DOI Listing
June 2020
3.050 Impact Factor

Electrocardiographic characteristics of idiopathic ventricular arrhythmias based on anatomy.

Ann Noninvasive Electrocardiol 2020 Jun 27:e12782. Epub 2020 Jun 27.

Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.

Idiopathic ventricular arrhythmia (IVA) is a term used to describe a spectrum of ventricular arrhythmia without structural heart disease (SHD). IVAs contain premature ventricular contractions (PVCs), nonsustained monomorphic ventricular tachycardia (VT), and sustained VT. Electrocardiography is a fundamental and important tool to diagnose and localize IVAs. Read More

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http://dx.doi.org/10.1111/anec.12782DOI Listing

Review paper on WPW and athletes: Let sleeping dogs lie?

Clin Cardiol 2020 Jun 27. Epub 2020 Jun 27.

Cardiology Clinical Academic Group, St. George's University Hospitals NHS Foundation Trust, St. George's University of London, London, UK.

Accessory pathways are present in 1 in 300 young individuals. They are often asymptomatic and potentially lethal arrhythmias may be the first presentation. During long-term follow-up, up to 20% of asymptomatic individuals with pre-excitation go on to develop an arrhythmia and the absence of traditional clinical and electrophysiological high-risk markers does not guarantee the "safe" nature of an accessory pathway. Read More

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http://dx.doi.org/10.1002/clc.23399DOI Listing

Improved real-time recordings using the fourth-generation cryoballoon technology-detection of dual fascicle electrograms.

J Interv Card Electrophysiol 2020 Jun 26. Epub 2020 Jun 26.

Department of Cardiovascular Diseases, University of Zagreb School of Medicine, University Hospital Centre Zagreb, Kišpatićeva 12, 10000, Zagreb, Croatia.

Background: We aimed to analyze the rate of visualization of real-time (RT) recordings and dual fascicle electrograms in our first series of patients treated with the fourth-generation cryoballoon (CB) device.

Methods: All consecutive patients who underwent CB ablation using the fourth-generation technology were included in the analysis. In all procedures, we used a 28-mm CB placed via a single transseptal puncture guided by intracardiac ultrasound. Read More

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http://dx.doi.org/10.1007/s10840-020-00809-8DOI Listing
June 2020
1.552 Impact Factor

Cryoballoon Ablation of Pulmonary Veins for Persistent Atrial Fibrillation: Results From the Multicenter STOP Persistent AF Trial.

Heart Rhythm 2020 Jun 23. Epub 2020 Jun 23.

Johns Hopkins Medical Institutions, Baltimore, MD, USA. Electronic address:

Background: Pulmonary vein isolation (PVI) is the cornerstone of catheter ablation to treat patients with symptomatic drug-refractory atrial fibrillation (AF).

Objectives: To assess the safety and efficacy of PVI using the cryoballoon catheter to treat patients with persistent AF.

Methods: STOP Persistent AF (NCT03012841) was a prospective, multicenter, single-arm, FDA-regulated trial designed to evaluate the safety and efficacy of PVI-only cryoballoon ablation for drug-refractory persistent AF (continuous episodes < 6 months). Read More

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http://dx.doi.org/10.1016/j.hrthm.2020.06.020DOI Listing

Noninvasive electrocardiography monitoring for very early recurrence predicts long-term outcome in patients after atrial fibrillation ablation.

Ann Noninvasive Electrocardiol 2020 Jun 25:e12785. Epub 2020 Jun 25.

Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.

Background: Atrial fibrillation (AF) is the most common sustained arrhythmia, and catheter ablation has been shown to be a highly effective treatment for patients with symptomatic AF. Very early recurrence (VER) of AF within 7 days after catheter ablation is common, but the clinical significance of VER remains unclear. We have examined the usefulness of the noninvasive electrocardiography monitor for the detection of VER and the relationship between VER and late recurrence (LR). Read More

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http://dx.doi.org/10.1111/anec.12785DOI Listing

CHADS-VASc Score as a Predictor of New-Onset Atrial Fibrillation After Catheter Ablation of Typical Atrial Flutter.

Front Physiol 2020 10;11:558. Epub 2020 Jun 10.

Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, China.

Purpose: Cavotricuspid isthmus (CTI) ablation is an effective procedure for typical atrial flutter (AFL), but patients remain at an elevated risk for developing new atrial fibrillation (AF). Currently, there are limited data on the utility of CHADS-VASc score to predict new-onset AF after typical AFL ablation. In this study, we assessed whether the CHADS-VASc score is a useful predictor of new-onset AF after CTI ablation in typical AFL patients without a prior history of AF. Read More

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http://dx.doi.org/10.3389/fphys.2020.00558DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7298125PMC

Reporting AF Recurrence After Catheter Ablation: The Burden Is on Us to Get it Right.

J Am Coll Cardiol 2020 Jun;75(25):3119-3121

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

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http://dx.doi.org/10.1016/j.jacc.2020.04.066DOI Listing

Recurrence of Atrial Fibrillation After Catheter Ablation or Antiarrhythmic Drug Therapy in the CABANA Trial.

J Am Coll Cardiol 2020 Jun;75(25):3105-3118

Mayo Clinic, Rochester, Minnesota.

Background: The CABANA (Catheter Ablation Versus Antiarrhythmic Drug Therapy for Atrial Fibrillation) trial randomized 2,204 patients with atrial fibrillation (AF) to catheter ablation or drug therapy. Analysis by intention-to-treat showed a nonsignificant 14% relative reduction in the primary outcome of death, disabling stroke, serious bleeding, or cardiac arrest.

Objectives: The purpose of this study was to assess recurrence of AF in the CABANA trial. Read More

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http://dx.doi.org/10.1016/j.jacc.2020.04.065DOI Listing

Outcomes of Incident Atrial Fibrillation in Heart Failure with Preserved or Reduced Ejection Fraction: A Community-Based Study.

J Cardiovasc Electrophysiol 2020 Jun 25. Epub 2020 Jun 25.

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

Introduction: The best management strategy for patients with atrial fibrillation (AF) with heart failure (HF) and preserved left ventricular ejection fraction (HFpEF) is unknown.

Methods And Results: This cohort study was conducted in Olmsted County, Minnesota, with resources of the Rochester Epidemiology Project.Patients with incident AF occurring between 2000 and 2014 with prior or concurrent HF were included. Read More

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http://dx.doi.org/10.1111/jce.14632DOI Listing

Multipolar mapping with the high-density grid catheter compared with conventional point-by-point mapping to guide catheter ablation for focal arrhythmias.

J Cardiovasc Electrophysiol 2020 Jun 24. Epub 2020 Jun 24.

Clinical Electrophysiology Laboratory, The Baker Heart Research Institute, Melbourne, Australia.

Background: Multipolar catheters provide high-density mapping which may reduce the procedural duration and improve the success of catheter ablation (CA) for focal arrhythmias. The high-density grid (HDG) catheter is a 16 electrode mapping catheter with bipole recordings at orthogonal splines. The aim of this study is to compare the clinical and procedural features from a cohort who underwent CA for focal arrhythmias using multipolar mapping (MPM) with age and case-matched cohort using point-by-point (PbyP) mapping. Read More

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http://dx.doi.org/10.1111/jce.14636DOI Listing

Non-Pulmonary Vein Triggers in Non-Paroxysmal Atrial Fibrillation Ablation: Implications of Pathophysiology for Catheter Ablation.

J Cardiovasc Electrophysiol 2020 Jun 24. Epub 2020 Jun 24.

Texas Cardiac Arrhythmia Institute, St. David's Medical Center, Austin, TX, USA.

Rhythm control of persistent atrial fibrillation (AF) patients represents a challenge for the modern interventional cardiac electrophysiologist; as a matter of fact, there is still divergence regarding the best ablative approach to adopt in this population. Different investigational endpoints, variability of techniques and tools, significant technological evolution, and the lack of universally accepted pathophysiological models, engendered a considerable heterogeneity in terms of techniques and outcomes, so much that the treatment of persistent subtypes of AF commonly still relies mainly on pulmonary vein (PV) isolation. The purpose of the present review is to report the current experimental and clinical evidence supporting the importance of mapping and ablating non-PV triggers and describe our institutional approach for the ablation of non-paroxysmal AF. Read More

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http://dx.doi.org/10.1111/jce.14638DOI Listing

Atrial fibrillation ablation in heart failure patients: improved systolic function after cryoballoon pulmonary vein isolation.

ESC Heart Fail 2020 Jun 24. Epub 2020 Jun 24.

Medicine II, Ulm University Medical Center, Ulm, Germany.

Aims: Atrial fibrillation (AF) and heart failure (HF) are the most common cardiac diseases and often coexist leading to increased mortality and morbidity compared with AF patients without HF. As shown previously, AF ablation using radio frequency (RF) in HF patients leads to a reduction of AF burden, an increase of left ventricular ejection fraction (LVEF) and consequently to reduced hospitalization and mortality. Previous AF ablation studies on HF patients have been liberal about additional targets beyond pulmonary vein isolation (PVI). Read More

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http://dx.doi.org/10.1002/ehf2.12735DOI Listing

Additional Low-Voltage-Area Ablation in Patients With Paroxysmal Atrial Fibrillation: Results of the Randomized Controlled VOLCANO Trial.

J Am Heart Assoc 2020 Jun 24:e015927. Epub 2020 Jun 24.

Kansai Rosai Hospital Cardiovascular Center Hyogo Japan.

Background The efficacy of low-voltage-area (LVA) ablation has not been well determined. This study aimed to investigate the efficacy of LVA ablation in addition to pulmonary vein isolation on rhythm outcomes in patients with paroxysmal atrial fibrillation (AF). Methods and Results VOLCANO (Catheter Ablation Targeting Low-Voltage Areas After Pulmonary Vein Isolation in Paroxysmal Atrial Fibrillation Patients) trial included paroxysmal AF patients undergoing initial AF ablation. Read More

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http://dx.doi.org/10.1161/JAHA.120.015927DOI Listing

Catheter ablation of atrial fibrillation in cardiac amyloidosis.

Pacing Clin Electrophysiol 2020 Jun 23. Epub 2020 Jun 23.

Division of Electrophysiology, Duke University Medical Center, Durham, NC.

Background: Cardiac amyloidosis is a progressive infiltrative disease involving deposition of amyloid fibrils in the myocardium and cardiac conduction system that frequently manifests with heart failure (HF) and arrhythmias, most frequently atrial fibrillation (AF), atrial flutter (AFL), and atrial tachycardia (AT).

Methods: We performed an observational retrospective study of patients with a diagnosis of cardiac amyloid who underwent catheter ablation at our institution between January 1, 2011 and December 1, 2018. Patient demographics, procedural characteristics and outcomes were determined by manual chart review. Read More

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http://dx.doi.org/10.1111/pace.13992DOI Listing

Utilization and Complications of Catheter Ablation for Atrial Fibrillation in Patients With Hypertrophic Cardiomyopathy.

J Am Heart Assoc 2020 Jun 23:e015721. Epub 2020 Jun 23.

The Azrieli Faculty of Medicine in the Galilee Bar-Ilan University Safed Israel.

Background Atrial fibrillation (AF) is common and bears a major clinical impact in patients with hypertrophic cardiomyopathy (HCM). We aimed to investigate the use and real-world safety of catheter ablation for AF in patients with HCM. Methods and Results We drew data from the US National Inpatient Sample to identify cases of AF ablation in HCM patients between 2003 and 2015. Read More

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http://dx.doi.org/10.1161/JAHA.119.015721DOI Listing

Empirical slow pathway ablation in documented but noninducible PSVT.

Pacing Clin Electrophysiol 2020 Jun 22. Epub 2020 Jun 22.

Department of Electrophysiology, Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran.

Background: The empirical slow pathway ablation (ESPA) is often applied to a documented but non-inducible supraventricular tachycardias (SVTs) in the electrophysiology study (EPS). A clinical paroxysmal supraventricular tachycardia (PSVT) that cannot be induced renders the therapeutic endpoint of radiofrequency catheter ablation difficult. The data supporting ESPA in adult patients are limited. Read More

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http://dx.doi.org/10.1111/pace.13991DOI Listing

Challenges in catheter ablation of deep myocardial substrate for ventricular tachycardia.

J Interv Card Electrophysiol 2020 Jun 22. Epub 2020 Jun 22.

Department of Cardiology, Rigshospitalet, University Hospital, Copenhagen, Denmark.

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http://dx.doi.org/10.1007/s10840-020-00796-wDOI Listing

Direct Oral Anticoagulants in the Setting of Catheter Ablation of Atrial Fibrillation: State of art.

Curr Probl Cardiol 2020 May 22:100622. Epub 2020 May 22.

Atrial fibrillation (AF) represents the arrhythmia of greatest clinical impact and catheter ablation of AF (CAAF) has become the most effective strategy for rhythm control in selected patients. Therefore, appropriate anticoagulation strategies are of paramount importance for patients undergoing CAAF, especially those at high risk, such those with high CHA2DS2VASc scores. Optimal management of anticoagulation before, during, and after CAAF is crucial. Read More

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http://dx.doi.org/10.1016/j.cpcardiol.2020.100622DOI Listing

Ablation of atrioventricular-nodal-reentrant- tachycardia in a patient with left-sided superior vena cava and dilated coronary sinus.

J Postgrad Med 2020 Jun 19. Epub 2020 Jun 19.

Department of Cardiology, Jagjivan Ram Western Railway Hospital, Mumbai, Maharashtra, India.

Atrioventricular (AV)-nodal-reentrant-tachycardia is a rare association in a patient with persistent left-sided superior vena cava and dilated coronary sinus. There are a few inherent difficulties in ablation in this condition, viz., difficulty in localization of good site for ablation and difficulty in stabilization of the ablation catheter at the designated site, making it difficult to produce transmural lesions and increasing risk of producing AV block. Read More

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http://dx.doi.org/10.4103/jpgm.JPGM_626_19DOI Listing

Iatrogenic femoral vein pseudoaneurysm.

J Vasc Surg Cases Innov Tech 2020 Jun 8;6(2):285-287. Epub 2020 Apr 8.

Department of Surgery, Kawasaki Medical School General Medical Center, Kita-ku, Okayama City, Okayama, Japan.

Femoral vein pseudoaneurysm is a rare complication during percutaneous interventions. We report the case of a patient with common femoral vein pseudoaneurysm caused by unsuccessful manual compression. A 68-year-old woman underwent catheter ablation for atrial fibrillation at another institution. Read More

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http://dx.doi.org/10.1016/j.jvscit.2020.03.008DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7298338PMC

Catheter ablation of atrial fibrillation after pericardiectomy: multi-center experience in China.

Ann Transl Med 2020 May;8(9):580

Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China.

Background: To study the effectiveness and safety of atrial fibrillation (AF) catheter ablation after pericardiectomy.

Methods: Data of 24 consecutive AF patients after pericardiectomy underwent catheter ablation from five centers were collected and analyzed retrospectively. All patients were followed up at 1, 3, and 12 months after catheter ablation. Read More

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http://dx.doi.org/10.21037/atm.2020.04.49DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7290548PMC

A Huge Gastric Distention.

Gastroenterology 2020 Jun 18. Epub 2020 Jun 18.

Department of Gastroenterology, Gifu University School of Medicine, Gifu, Japan.

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http://dx.doi.org/10.1053/j.gastro.2020.06.028DOI Listing

[Atrial flutter in cardiology practice].

Pol Merkur Lekarski 2020 Jun;48(285):204-208

Department of Electrocardiology, the John Paul II Hospital, Kraków, Poland; Institute of Cardiology, Jagiellonian University Medical College, Kraków, Poland.

Atrial flutter (AFL) is one of the most common arrhythmias present in clinical practice, both for the GPs and cardiologist practice. After atrial fibrillation (AF) is second the most common supraventricular arrhythmia. This usually occurs along the cavo-tricuspid isthmus of the right atrium though atrial flutter can originate from the left atrium as well. Read More

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Treatment of benign thyroid nodules by radiofrequency thermal ablation

Orv Hetil 2020 07;161(27):1131-1136

Általános Orvostudományi Kar, Transzplantációs és Sebészeti Klinika,Semmelweis Egyetem, Budapest, Baross u. 23-25., 1082.

Introduction: Benign thyroid nodules are frequent findings in imaging studies, most of the time not requiring any intervention. Treatment is usually started when nodules increase in size, the patient becomes symptomatic or clinically relevant hyperthyroidism develops. Thermoablation is an effective alternative modality. Read More

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http://dx.doi.org/10.1556/650.2020.31726DOI Listing

The long-term outcomes and durability of the Cox-Maze IV procedure for atrial fibrillation.

J Thorac Cardiovasc Surg 2020 May 5. Epub 2020 May 5.

Division of Cardiothoracic Surgery, Department of Surgery, Washington University School of Medicine, Barnes-Jewish Hospital, St Louis, Mo. Electronic address:

Objective: Surgical ablation of atrial fibrillation (AF) is indicated both in patients with AF undergoing concomitant cardiac surgery and in those who have not responded to medical and/or catheter-based ablation therapy. This study examined our long-term outcomes following the Cox-Maze IV procedure (CMP-IV).

Methods: Between May 2003 and March 2018, 853 patients underwent either biatrial CMP-IV (n = 765) or a left-sided CMP-IV (n = 88) lesion set with complete isolation of the posterior left atrium. Read More

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http://dx.doi.org/10.1016/j.jtcvs.2020.04.100DOI Listing

Not so typical: The role of epicardial connections in typical flutter refractory to block across the cavotricuspid isthmus.

J Cardiovasc Electrophysiol 2020 Jun 20. Epub 2020 Jun 20.

Electrophysiology Section, Cardiovascular Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.

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http://dx.doi.org/10.1111/jce.14626DOI Listing

Electrophysiologic evidence of epicardial connections between low right atrium and remote right atrial region or coronary sinus musculature: relevance for catheter ablation of typical atrial flutter.

J Cardiovasc Electrophysiol 2020 Jun 20. Epub 2020 Jun 20.

Department of cardiology, Rouen University Hospital, Rouen, France.

Background: The coronary sinus (CS) is surrounded by a myocardial coat with extensive connections to the left and right atria that contributes to interatrial electrical connection. Whereas epicardial connections between CS musculature and the left atrium have largely been demonstrated, clinically relevant epicardial connections from the CS musculature toward the low right atrium (LRA) and epicardial connections between two regions of the right atrium remain questionable.

Methods: Five patients underwent electrophysiology (EP) study for typical atrial flutter (AFl) using either conventional multipolar catheters (4 patients) or 3D high-density mapping system (1 patient). Read More

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http://dx.doi.org/10.1111/jce.14627DOI Listing

Can Anticoagulation Be Stopped After Ablation of Atrial Fibrillation?

Curr Cardiol Rep 2020 Jun 19;22(8):58. Epub 2020 Jun 19.

Electrophysiology Section, Division of Cardiology, Hospital of the University of Pennsylvania, 9 Founders Pavilion, 3400 Spruce Street, Philadelphia, PA, 19104, USA.

Purpose Of Review: This review discusses the pros and cons of discontinuing oral anticoagulation therapy (OAT) after catheter ablation of atrial fibrillation (AF), and data from relevant studies, and summarizes the most recent Expert Consensus recommendations on the topic.

Recent Findings: Patients with AF are at risk of cerebrovascular embolic events (CVEs) including stroke and transient ischemic attacks. OAT can be effective in preventing CVEs, while catheter ablation is an effective treatment to eliminate AF. Read More

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http://dx.doi.org/10.1007/s11886-020-01313-1DOI Listing