35,144 results match your criteria Catheter Ablation


P-wave vector magnitude predicts recurrence of atrial fibrillation after catheter ablation in patients with persistent atrial fibrillation.

Ann Noninvasive Electrocardiol 2019 Mar 21:e12646. Epub 2019 Mar 21.

Second Department of Internal Medicine, University of Toyama, Toyama, Japan.

Background: The predictive efficacies of parameters related to P-wave amplitude (PWA) for atrial fibrillation (AF) recurrence after catheter ablation are unclear.

Methods: We measured multiple PWA parameters using an automated system in 126 consecutive patients with persistent and long-standing persistent AF who underwent catheter ablation. The relationships between AF recurrence and various PWA parameters were examined, including the association with P-wave vector magnitude (calculated as the square root of the sum of lead II PWA squared, lead V6 PWA squared, and a one-half lead V2 PWA squared). Read More

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http://dx.doi.org/10.1111/anec.12646DOI Listing

Procedural Outcomes of Patients With Heart Failure Undergoing Catheter Ablation of Atrial Fibrillation.

Am J Ther 2019 Mar 8. Epub 2019 Mar 8.

Division of Cardiovascular Diseases, Section of Heart Failure and Transplant, University of Iowa Hospitals and Clinics, Iowa City, IA.

Background: Catheter ablation is being increasingly performed for rhythm control of atrial fibrillation (AF). Heart failure (HF) frequently coexists with AF because they share common risk factors.

Study Question: This study aims at identifying the characteristics and procedural outcomes of patients with HF undergoing catheter ablation of AF. Read More

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http://dx.doi.org/10.1097/MJT.0000000000000931DOI Listing
March 2019
1 Read

Pan-Asia United States PrEvention of Sudden Cardiac Death Catheter Ablation Trial (PAUSE-SCD): rationale and study design.

J Interv Card Electrophysiol 2019 Mar 19. Epub 2019 Mar 19.

Center for Arrhythmia Care, Pritzker School of Medicine, The University of Chicago Medicine, 5841 S. Maryland Ave. MC 6080, Chicago, IL, 60637, USA.

Background: The role of catheter ablation as an adjunct and alternative to ICD implantation is not known in patients at risk for recurrent ventricular tachycardia (VT) and sudden cardiac death (SCD) across Asia. Patients with nonischemic etiologies of cardiomyopathy, which are highly prevalent in Asia, have not been previously enrolled in randomized trials of VT ablation.

Objective: To evaluate whether preemptive catheter ablation in patients with monomorphic VT and an indication for ICD implantation results in improved clinical outcomes compared to ICD implantation with standard medical therapy alone. Read More

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http://dx.doi.org/10.1007/s10840-019-00535-wDOI Listing
March 2019
1 Read

Pulmonary vein-gap re-entrant atrial tachycardia following atrial fibrillation ablation: an electrophysiological insight with high-resolution mapping.

Europace 2019 Mar 19. Epub 2019 Mar 19.

Division of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, Nishishinbashi, Minato-ku, Tokyo, Japan.

Aims: The circuit of pulmonary vein-gap re-entrant atrial tachycardia (PV-gap RAT) after atrial fibrillation ablation is sometimes difficult to identify by conventional mapping. We analysed the detailed circuit and electrophysiological features of PV-gap RATs using a novel high-resolution mapping system.

Methods And Results: This multicentre study investigated 27 (7%) PV-gap RATs in 26 patients among 378 atrial tachycardias (ATs) mapped with Rhythmia™ system in 281 patients. Read More

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https://academic.oup.com/europace/advance-article/doi/10.109
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http://dx.doi.org/10.1093/europace/euz034DOI Listing
March 2019
1 Read

Transseptal puncture facilitated by "reverse tenting" using a left atrial ablation catheter.

HeartRhythm Case Rep 2019 Mar 15;5(3):159-162. Epub 2018 Dec 15.

Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland.

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http://dx.doi.org/10.1016/j.hrcr.2018.12.002DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6404362PMC

Left atrial appendage thrombus formation less than 24 hours after empirical cryoballoon-based left atrial appendage isolation: A serious warning.

HeartRhythm Case Rep 2019 Mar 30;5(3):124-127. Epub 2018 Nov 30.

Department of Cardiology, Angiology and Intensive Care Medicine, University Heart Center Lübeck, Medical Clinic II, Lübeck, Germany.

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http://dx.doi.org/10.1016/j.hrcr.2018.11.010DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6404379PMC

Catheter ablation versus surgery in patients with persistent atrial fibrillation.

Authors:
Harsha V Ganga

Int J Cardiol 2019 May;283:128

Department of Electrophysiology, Brown University, Providence, RI, USA. Electronic address:

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http://dx.doi.org/10.1016/j.ijcard.2018.12.081DOI Listing

Impact of low-voltage zones on the left atrial anterior wall on the reduction in the left atrial appendage flow velocity in persistent atrial fibrillation patients.

J Interv Card Electrophysiol 2019 Mar 18. Epub 2019 Mar 18.

Department of Cardiology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minami Koshigaya, Koshigaya, Saitama, 343-8555, Japan.

Background: The reduction in the left atrial appendage (LAA) flow velocity is related to the presence of emboli in atrial fibrillation (AF) patients. The LAA is located on the left superior side of the left atrial (LA) anterior wall, and we investigated the relationship between the reduction in the LAA flow velocity (LAAFV) and low voltage zones (LVZs < 0.5 mV) on the LA anterior wall. Read More

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http://dx.doi.org/10.1007/s10840-019-00532-zDOI Listing

Inadvertent transseptal puncture into the aortic root: the narrow edge between luck and catastrophe in interventional cardiology.

Europace 2019 Mar 18. Epub 2019 Mar 18.

Department of Cardiology, Asklepios Klinik St. Georg, Lohmühlenstr. 5, Hamburg, Germany.

Aims: Inadvertent puncture of the aortic root (AR) is a well-known complication of transseptal puncture (TSP). Strategies for handling of this potentially lethal complication have not been identified yet. In this study, we present typical anatomical locations and clinical management of aortic root puncture (ARP) due to TSP. Read More

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https://academic.oup.com/europace/advance-article/doi/10.109
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http://dx.doi.org/10.1093/europace/euz042DOI Listing
March 2019
1 Read

Anatomic Conformation of Renal Sympathetic Nerve Fibers in Living Human Tissues.

Sci Rep 2019 Mar 18;9(1):4831. Epub 2019 Mar 18.

Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea.

Renal denervation using radiofrequency catheter ablation is known to eliminate the renal sympathetic nerve and to lower blood pressure in patients with resistant hypertension. We sought to investigate the detailed anatomic conformation of the peri-renal arterial sympathetic nerve fibers with living human specimens. Peri-renal arterial tissue was harvested from patients undergoing elective radical or simple nephrectomy. Read More

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http://dx.doi.org/10.1038/s41598-019-41159-4DOI Listing

The rationale for isolation of the left atrial pulmonary venous component to control atrial fibrillation: a review article.

Heart Rhythm 2019 Mar 15. Epub 2019 Mar 15.

Cardiology Clinical Academic Group, St. George's University of London, United Kingdom.

Catheter ablation of persistent atrial fibrillation is an evolving field. In this review, we discuss the rationale for the isolation of the pulmonary venous component of the left atrium to control atrial fibrillation. The review describes the embryological origin of this component and makes the important distinction between the true posterior wall and the pulmonary venous component, which forms the dome of the left atrium. Read More

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http://dx.doi.org/10.1016/j.hrthm.2019.03.012DOI Listing

SPONTANEOUS AUTOMATICITY OF A RIGHT ATRIOFASCICULAR ACCESSORY PATHWAY.

J Cardiovasc Electrophysiol 2019 Mar 18. Epub 2019 Mar 18.

Arrhythmia Unit, Department of Cardiology, Hospital Virgen de la Salud, Toledo, Spain.

A 14-year-old girl was referred for electrophysiologic study and catheter ablation due to documented wide QRS complex tachycardia with left bundle branch block morphology. This article is protected by copyright. All rights reserved. Read More

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http://dx.doi.org/10.1111/jce.13914DOI Listing

Successful catheter ablation of a ventricular tachycardia by a radiofrequency application from the right atrium in a patient with a tetralogy of fallot.

Authors:
Takumi Yamada

J Cardiovasc Electrophysiol 2019 Mar 18. Epub 2019 Mar 18.

Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, AL, USA.

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http://dx.doi.org/10.1111/jce.13918DOI Listing

Radiofrequency ablation lesion assessment using optical coherence tomography - a proof-of-concept study.

J Cardiovasc Electrophysiol 2019 Mar 18. Epub 2019 Mar 18.

Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Switzerland.

Background: Radiofrequency catheter ablation (RFA) is an effective treatment for atrial fibrillation. However, ablation lesions are usually only assessed functionally. The immediate effect of RFA on the tissue is not directly visualized. Read More

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http://dx.doi.org/10.1111/jce.13917DOI Listing

Comparing phase and electrographic flow mapping for persistent atrial fibrillation.

Pacing Clin Electrophysiol 2019 Mar 18. Epub 2019 Mar 18.

Cardiovascular Medicine, Stanford University, Stanford, California, United States.

Background: Increasing number of methods are being used to map atrial fibrillation (AF), yet the sensitivity of identifying potential localized AF sources of these novel methods are unclear. Here we report a comparison of two approaches to map AF based upon (a) electrographic flow mapping and (b) phase mapping in a multicenter registry of patients in whom ablation terminated persistent AF.

Methods: 53 consecutive patients with persistent AF in whom ablation terminated AF in an international multicenter registry were enrolled. Read More

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http://dx.doi.org/10.1111/pace.13649DOI Listing

Comparison of electrogram waveforms between a multielectrode mapping catheter and a linear ablation catheter.

Pacing Clin Electrophysiol 2019 Mar 18. Epub 2019 Mar 18.

Kansai Rosai Hospital Cardiovascular Center, 3-1-69 Inabaso, Amagasaki, Hyogo, 660-8511, Japan.

Background: Smaller low-voltage areas (LVAs) obtained by multielectrode catheters were reported than those by linear ablation catheters. However, the underlying electrogram difference have not been elucidated. This study aimed to compare the two mapping catheters' measurements of electrogram waveforms and LVAs. Read More

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http://dx.doi.org/10.1111/pace.13644DOI Listing

Lesion Index Titration Using Contact-Force Technology Enables Safe and Effective Radiofrequency Lesion Creation at the Root of the Aorta and Pulmonary Artery.

Circ Arrhythm Electrophysiol 2019 Mar;12(3):e007080

Centro Nacional de Investigaciones Cardiovasculares, Carlos III (CNIC), Myocardial Pathophysiology Area (J.M.A.-A., J.G.Q., S.L.-C., J.J., D.F.-R.).

Background: Ablation of some myocardial substrates requires catheter-based radiofrequency delivery at the root of a great artery. We studied the safety and efficacy parameters associated with catheter-based radiofrequency delivery at the root of the aorta and pulmonary artery.

Methods: Thirty-six pigs underwent in-vivo catheter-based ablation under continuous contact-force and lesion index (power, contact-force, and time) monitoring during 60-s radiofrequency delivery with an open-irrigated tip catheter. Read More

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http://dx.doi.org/10.1161/CIRCEP.118.007080DOI Listing

From mitral valve prolapse to catheter ablation.

Eur Heart J 2019 Mar 16. Epub 2019 Mar 16.

Department of Cardiology, University Hospital of Angers, MitoVasc Institute, Mitolab Team, University of Angers, UMR CNRS 6015 - INSERM U1083, 4 rue Larrey, Angers Cedex 9, France.

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http://dx.doi.org/10.1093/eurheartj/ehz139DOI Listing

Iatrogenic Aortic Regurgitation after Radiofrequency Ablation of Idiopathic Ventricular Arrhythmias Originating from the Aortic Valvular Region.

Heart Rhythm 2019 Mar 13. Epub 2019 Mar 13.

Department of Cardiology, Faculty of Medicine, University of Tsukuba.

Background: Radiofrequency ablation at the aortic root has the potential risk of aortic regurgitation (AR).

Objective: This study investigated the incidence and clinical features of iatrogenic AR after catheter ablation of idiopathic ventricular arrhythmias (VAs) originating from the aortic root.

Methods: We studied 45 consecutive patients with idiopathic VAs originating from the aortic cusps (AC group; n=32) and papillary muscles (control group; n=13) who underwent ablation via a retrograde aortic approach and serial echocardiography before and within 24 hours after the ablation procedure. Read More

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http://dx.doi.org/10.1016/j.hrthm.2019.03.010DOI Listing

Mechanism, underlying substrate and predictors of atrial tachycardia following atrial fibrillation ablation using the second-generation cryoballoon.

J Cardiol 2019 Mar 13. Epub 2019 Mar 13.

University Heart Center Lübeck, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Luebeck, Germany. Electronic address:

Background: Data regarding atrial tachycardia (AT) following second-generation cryoballoon ablation (CBA) of atrial fibrillation (AF) are limited.

Aim: To describe the incidence, mechanisms, and clinical predictors of ATs following CBA.

Methods And Results: In this retrospective single-center study 238 patients undergoing CBA for treatment of paroxysmal (91/238; 38. Read More

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http://dx.doi.org/10.1016/j.jjcc.2019.02.006DOI Listing

Atrial fibrillation ablation in practice: assessing CABANA generalizability.

Eur Heart J 2019 Mar 15. Epub 2019 Mar 15.

Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, 200 1st St SW, Rochester, MN, USA.

Aims: The Catheter Ablation vs. Antiarrhythmic Drug Therapy for Atrial Fibrillation (CABANA) trial aimed to assess the impact of ablation on morbidity and mortality. This observational study was conducted in parallel to CABANA to assess trial generalizability. Read More

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http://dx.doi.org/10.1093/eurheartj/ehz085DOI Listing
March 2019
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Effect of Catheter Ablation vs Antiarrhythmic Drug Therapy on Mortality, Stroke, Bleeding, and Cardiac Arrest Among Patients With Atrial Fibrillation: The CABANA Randomized Clinical Trial.

JAMA 2019 Mar 15. Epub 2019 Mar 15.

Duke Clinical Research Institute, Duke University, Durham, North Carolina.

Importance: Catheter ablation is effective in restoring sinus rhythm in atrial fibrillation (AF), but its effects on long-term mortality and stroke risk are uncertain.

Objective: To determine whether catheter ablation is more effective than conventional medical therapy for improving outcomes in AF.

Design, Setting, And Participants: The Catheter Ablation vs Antiarrhythmic Drug Therapy for Atrial Fibrillation trial is an investigator-initiated, open-label, multicenter, randomized trial involving 126 centers in 10 countries. Read More

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http://dx.doi.org/10.1001/jama.2019.0693DOI Listing
March 2019
1 Read

Cardiac Catheter Ablation for Heart Rhythm Abnormalities.

JAMA 2019 03;321(11):1128

Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock.

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http://dx.doi.org/10.1001/jama.2018.9832DOI Listing

Effect of Catheter Ablation vs Antiarrhythmic Medication on Quality of Life in Patients With Atrial Fibrillation: The CAPTAF Randomized Clinical Trial.

JAMA 2019 03;321(11):1059-1068

Department of Medical Science and Cardiology, Uppsala University, Uppsala, Sweden.

Importance: Quality of life is not a standard primary outcome in ablation trials, even though symptoms drive the indication.

Objective: To assess quality of life with catheter ablation vs antiarrhythmic medication at 12 months in patients with atrial fibrillation.

Design, Setting, And Participants: Randomized clinical trial at 4 university hospitals in Sweden and 1 in Finland of 155 patients aged 30-70 years with more than 6 months of atrial fibrillation and treatment failure with 1 antiarrhythmic drug or β-blocker, with 4-year follow-up. Read More

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http://dx.doi.org/10.1001/jama.2019.0335DOI Listing
March 2019
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Catheter Ablation for Atrial Fibrillation: Lessons Learned From CABANA.

JAMA 2019 Mar 15. Epub 2019 Mar 15.

Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.

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http://dx.doi.org/10.1001/jama.2018.17478DOI Listing
March 2019
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Effect of Catheter Ablation vs Medical Therapy on Quality of Life Among Patients With Atrial Fibrillation: The CABANA Randomized Clinical Trial.

JAMA 2019 Mar 15. Epub 2019 Mar 15.

Mayo Clinic, Rochester, Minnesota.

Importance: Catheter ablation is more effective than drug therapy in restoring sinus rhythm in patients with atrial fibrillation (AF), but its incremental effect on long-term quality of life (QOL) is uncertain.

Objective: To determine whether catheter ablation is more beneficial than conventional drug therapy for improving QOL in patients with AF.

Design, Setting, And Participants: An open-label randomized clinical trial of catheter ablation vs drug therapy in 2204 symptomatic patients with AF older than 65 years or 65 years or younger with at least 1 risk factor for stroke. Read More

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http://dx.doi.org/10.1001/jama.2019.0692DOI Listing
March 2019
1 Read

Optimal cutoff value of bipolar low-voltage in electroanatomic voltage mapping during atrial fibrillation rhythm.

Pacing Clin Electrophysiol 2019 Mar 15. Epub 2019 Mar 15.

Department of Cardiology, Mitsubishi Kyoto Hospital.

Background: Electroanatomic voltage mapping (EAVM) of left atrium (LA) with multielectrodes is usually acquired during sinus rhythm (SR), and the feasibility of EAVM during atrial fibrillation (AF) rhythm is unclear.

Methods: We performed EAVM of LA during both SR and AF rhythm in 44 patients undergoing catheter ablation for AF and validated the optimal cutoff value of low-voltage area (LVA) during AF rhythm for detecting LVA defined as bipolar voltages ≤0.5mV during SR. Read More

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http://dx.doi.org/10.1111/pace.13661DOI Listing
March 2019
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MRI-detected brain lesions in AF patients without further stroke risk factors undergoing ablation - a retrospective analysis of prospective studies.

BMC Cardiovasc Disord 2019 Mar 12;19(1):58. Epub 2019 Mar 12.

Department of Neurology, Universitätsklinikum Würzburg, Josef-Schneider-Str. 11 97080, Würzburg, Germany.

Background: Atrial fibrillation (AF) without other stroke risk factors is assumed to have a low annual stroke risk comparable to patients without AF. Therefore, current clinical guidelines do not recommend oral anticoagulation for stroke prevention of AF in patients without stroke risk factors. We analyzed brain magnetic resonance imaging (MRI) imaging to estimate the rate of clinically inapparent ("silent") ischemic brain lesions in these patients. Read More

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http://dx.doi.org/10.1186/s12872-019-1035-1DOI Listing

Letter by Maesen et al Regarding Article, "Randomized Controlled Trial of Surgical Versus Catheter Ablation for Paroxysmal and Early Persistent Atrial Fibrillation".

Circ Arrhythm Electrophysiol 2019 Mar;12(3):e007088

Department of Cardiac Surgery, UZ Brussel, Belgium (M.L.M.).

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http://dx.doi.org/10.1161/CIRCEP.118.007088DOI Listing
March 2019
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Electrophysiological and Anatomical Correlates of Sites With Postpacing Intervals Shorter Than Tachycardia Cycle Length in Atypical Atrial Flutter.

Circ Arrhythm Electrophysiol 2019 Mar;12(3):e006955

Cardiology Division, University Hospitals of Geneva (N.J., D.C.S., P.B.D., M.N.).

Background Although entrainment mapping is an established approach to atypical atrial flutter ablation, postpacing intervals shorter than tachycardia cycle length (difference between postpacing interval and tachycardia cycle length [dPPI] <0 ms) remain of unknown significance. We sought to compare anatomic and electrophysiological properties of sites with dPPI <0, dPPI=0-30, and dPPI >30 ms. Methods We studied 24 noncavotricuspid isthmus-dependent macroreentrant atypical atrial flutter in 19 consecutive patients. Read More

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https://www.ahajournals.org/doi/10.1161/CIRCEP.118.006955
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http://dx.doi.org/10.1161/CIRCEP.118.006955DOI Listing
March 2019
4 Reads

Back to the Future.

Circ Arrhythm Electrophysiol 2019 Mar;12(3):e007258

The Heart and Vascular Institute of the University of Pittsburgh Medical Center, PA.

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http://dx.doi.org/10.1161/CIRCEP.119.007258DOI Listing
March 2019
1 Read

The safety of newly developed automatic temperature-controlled endobiliary radiofrequency ablation system for malignant biliary strictures: a prospective multicenter study.

J Gastroenterol Hepatol 2019 Mar 12. Epub 2019 Mar 12.

Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Korea.

Background And Aims: Catheter-based endobiliary radiofrequency ablation (RFA) is an endoscopic local treatment for patients with malignant biliary stricture (MBS). However, excessive heating of the bile duct by the current RFA system can induce serious complications. Recently, a new RFA system with automatic temperature control was developed. Read More

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http://doi.wiley.com/10.1111/jgh.14657
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http://dx.doi.org/10.1111/jgh.14657DOI Listing
March 2019
2 Reads

Impact of Renal Dysfunction on Left Atrial Low-Voltage Areas in Patients With Atrial Fibrillation.

Circ J 2019 Mar 9. Epub 2019 Mar 9.

Cardiovascular Center, Kansai Rosai Hospital.

Background: The presence of residual left atrial low-voltage areas (LVA) has been shown to be strongly associated with atrial fibrillation (AF) recurrence after pulmonary vein isolation. A preliminary study showed that concomitant chronic kidney disease (CKD) increased the rate of AF recurrence. The association between CKD and LVA, however, has not been elucidated. Read More

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http://dx.doi.org/10.1253/circj.CJ-18-1277DOI Listing
March 2019
1 Read

Effect of Extensive Ablation on Recurrence in Patients with Persistent Atrial Fibrillation Treated with Pulmonary Vein Isolation (EARNEST-PVI) trial: Design and rationale.

J Cardiol 2019 Mar 7. Epub 2019 Mar 7.

Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Osaka, Japan.

Background: Although extensive substrate modification in addition to pulmonary vein isolation (PVI) has been recommended in catheter ablation for persistent atrial fibrillation (AF), recent randomized controlled trials have not demonstrated efficacy of such additional ablations.

Methods And Study Design: The Osaka Cardiovascular Conference will conduct a multicenter, randomized, open-label trial aiming to examine whether PVI alone is non-inferior to PVI plus additional ablation such as linear ablation and/or complex fractionated atrial electrogram ablation in patients with persistent AF. The primary outcome is recurrence of AF documented by scheduled or symptom-driven electrocardiogram tests during a 1-year follow-up period after the index ablation. Read More

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http://dx.doi.org/10.1016/j.jjcc.2019.01.010DOI Listing

Successful catheter ablation of atrial fibrillation improves but not reverses the abnormalities of left atrial mechanics and energy loss.

Echocardiography 2019 Mar 9. Epub 2019 Mar 9.

The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China.

Background: Dissipative energy loss (EL), a new index to quantify the inefficient blood flow, has not been explored within left atrium (LA) in patients with atrial fibrillation (AF). We aimed to study the intra-atrial flow and mechanics in patients with AF before and after successful catheter ablation by evaluating EL and LA global longitudinal strain (LAS).

Methods: In our study, there were 53 patients undergoing catheter ablation for AF at baseline (AF group) and 33 age- and sex-matched controls. Read More

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http://dx.doi.org/10.1111/echo.14304DOI Listing
March 2019
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Clinical characteristics and rhythm outcome of catheter ablation of hemodynamically corrected valvular atrial fibrillation.

J Cardiol 2019 Mar 5. Epub 2019 Mar 5.

Yonsei University Health System, Seoul, Republic of Korea. Electronic address:

Background: Although the hemodynamic burden and structural substrate contribute to valvular atrial fibrillation (VAF) mechanisms, the role of catheter ablation has rarely been reported. We investigated the clinical characteristics, mapping findings, and long-term rhythm outcomes after catheter ablation of hemodynamically corrected VAF.

Methods: We compared 77 patients with VAF (46. Read More

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http://dx.doi.org/10.1016/j.jjcc.2018.10.014DOI Listing
March 2019
1 Read

Silent cerebral lesions and cognitive function after pulmonary vein isolation with an irrigated gold-tip catheter: REDUCE-TE Pilot study.

J Cardiovasc Electrophysiol 2019 Mar 7. Epub 2019 Mar 7.

Hôpitaux Universitaires de Genève, Geneva, Switzerland.

Introduction: Stroke is one of the most feared complications during catheter ablation of atrial fibrillation. While symptomatic thrombembolic events are rare, magnetic resonance imaging (MRI) may identify asymptomatic (i.e. Read More

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http://dx.doi.org/10.1111/jce.13902DOI Listing
March 2019
1 Read

A regular wide QRS complex tachycardia: What is the mechanism?

J Cardiovasc Electrophysiol 2019 Mar 7. Epub 2019 Mar 7.

Arrhythmia Unit, Department of Cardiology, Hospital Virgen de la Salud, Toledo, Spain.

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. Read More

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http://dx.doi.org/10.1111/jce.13905DOI Listing
March 2019
1 Read

Percutaneous left ventricular assist device support during ablation of ventricular tachycardia: A meta-analysis of current evidence.

J Cardiovasc Electrophysiol 2019 Mar 7. Epub 2019 Mar 7.

Department of Cardiology, UT Southwestern Medical Center, Dallas, Texas.

Introduction: Catheter ablation of ventricular tachycardia (VT) can be an effective therapy to reduce VT burden, but often it is limited by the potential for hemodynamic instability. Percutaneous left ventricular assist devices (pLVADs) have been used to maintain hemodynamic support during VT ablation but the evidence regarding its clinical impact has been inconclusive.

Methods And Results: We sought to assess the clinical impact of pLVAD when used in VT ablation by conducting a meta-analysis of the current evidence. Read More

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http://dx.doi.org/10.1111/jce.13907DOI Listing
March 2019
2 Reads

Relationship between Atrial Scar on Cardiac Magnetic Resonance and Pulmonary Vein Reconnection after Catheter Ablation for Paroxysmal Atrial Fibrillation.

J Cardiovasc Electrophysiol 2019 Mar 7. Epub 2019 Mar 7.

Department of Cardiovascular Imaging, , Hôpital Cardiologique du Haut-Lévêque, CHU de Bordeaux, Pessac, France.

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 catheter ablation for paroxysmal AF. Read More

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http://dx.doi.org/10.1111/jce.13908DOI Listing
March 2019
1 Read

The use of a high-resolution mapping system may facilitate standard clinical practice in VE and VT ablation.

J Interv Card Electrophysiol 2019 Mar 7. Epub 2019 Mar 7.

Department of Electrophysiology, University of Cologne, Kerpener Straße 62, 50937, Köln, Germany.

Background: First experiences using a 64-electrode mini-basket catheter (BC) paired with an automatic mapping system (Rhythmia™) for catheter ablation (CA) of ventricular ectopy (VE) and ventricular tachycardia (VT) have been reported.

Objectives: We aimed to evaluate (1) differences in ventricular access for the BC and (2) benefit of this technology in the setting of standard clinical practice.

Methods: Patients (pts) undergoing CA for VE or VT using the Intellamap Orion™ paired with the Rhythmia™ automated-mapping system were included in this study. Read More

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http://link.springer.com/10.1007/s10840-019-00530-1
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http://dx.doi.org/10.1007/s10840-019-00530-1DOI Listing
March 2019
2 Reads
1.552 Impact Factor

Catheter ablation in atrial fibrillation: is there a mortality benefit in patients with diabetes and heart failure?

Herz 2019 Mar 7. Epub 2019 Mar 7.

Division of Cardiology, Department of Medical Sciences, "Città della Salute e della Scienza" Hospital, University of Turin, Corso Bramante 88, 10126, Turin, Italy.

Atrial fibrillation (AF) is the most commonly sustained arrhythmia, and patients with diabetes mellitus (DM) exhibit an increased incidence of AF. Besides DM, heart failure (HF) shares pathophysiological links with AF, mainly related to the pathological remodeling of hearts affected by structural disease. As in a vicious circle, AF may contribute to HF worsening and increased mortality in patients with structural heart diseases, and the outcome may be further impaired when concomitant DM is present. Read More

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http://dx.doi.org/10.1007/s00059-019-4794-7DOI Listing
March 2019
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The impact of virtual arrhythmia clinics following catheter ablation for atrial fibrillation.

Eur Heart J Qual Care Clin Outcomes 2019 Mar 7. Epub 2019 Mar 7.

Department of Cardiology, Barts Heart Centre, St Bartholomew's Hospital, London.

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http://dx.doi.org/10.1093/ehjqcco/qcz011DOI Listing
March 2019
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Personalized virtual-heart technology for guiding the ablation of infarct-related ventricular tachycardia.

Nat Biomed Eng 2018 Oct 3;2(10):732-740. Epub 2018 Sep 3.

Institute for Computational Medicine and Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland, USA.

Ventricular tachycardia (VT), which can lead to sudden cardiac death, occurs frequently in patients with myocardial infarction. Catheter-based radiofrequency ablation of cardiac tissue has achieved only modest efficacy, owing to the inaccurate identification of ablation targets by current electrical mapping techniques, which can lead to extensive lesions and to a prolonged, poorly tolerated procedure. Here we show that personalized virtual-heart technology based on cardiac imaging and computational modelling can identify optimal infarct-related VT ablation targets in retrospective animal (5 swine) and human studies (21 patients) and in a prospective feasibility study (5 patients). Read More

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http://dx.doi.org/10.1038/s41551-018-0282-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6400313PMC
October 2018
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Delayed efficacy of radiofrequency catheter ablation on arrhythmias originating in the interventricular basal septum.

Clin Case Rep 2019 Feb 9;7(2):322-327. Epub 2019 Jan 9.

Department of Cardiovascular, Respiratory, Nephrology, Anaesthesiology and Geriatric Sciences of "Sapienza" University of Rome Rome Italy.

Delayed efficacy of radiofrequency energy can suppress ventricular arrhythmias after a failed ablation procedure. The implant of cardiac defibrillator for arrhythmia-induced cardiomyopathy should be procrastinated after a period of follow-up. Waiting for delayed efficacy is a reasonable choice to reduce the risk of complications associated with aggressive ablative approaches. Read More

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http://dx.doi.org/10.1002/ccr3.1883DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6389468PMC
February 2019
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