40,612 results match your criteria Catheter Ablation


Post Procedural Peak Left Atrial Contraction Strain Predicts Recurrence of Arrhythmia after Catheter Ablation of Atrial Fibrillation.

Cardiovasc Ultrasound 2021 Jun 11;19(1):22. Epub 2021 Jun 11.

Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, MN, 55905, Rochester, USA.

Background: Left atrial (LA) function can be impaired by the atrial fibrillation (AF) ablation and might be associated with the risk of recurrence. We sought to determine whether the post-procedural changes in LA function impact the risk of recurrence following AF ablation.

Methods: We retrospectively reviewed patients who underwent AF ablation between 2009 and 2011 and underwent transthoracic echocardiography before ablation, 1-day and 3-month after ablation. Read More

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Empiric catheter ablation of premature ventricular contractions when there is a >20% burden in an asymptomatic patient with normal left ventricular size and function-An argument for a conservative, do-less approach.

Authors:
Kurt S Hoffmayer

Heart Rhythm O2 2021 Apr 26;2(2):210-214. Epub 2021 Feb 26.

Division of Cardiology, Section of Electrophysiology, University of California, San Diego, La Jolla, California.

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Empiric ablation of asymptomatic PVCs when there is greater than 20% burden but normal left ventricular function-An argument in support of catheter ablation.

Authors:
Frederick T Han

Heart Rhythm O2 2021 Apr 26;2(2):205-209. Epub 2021 Feb 26.

Section of Cardiac Electrophysiology University of California, San Diego Cardiovascular Institute, La Jolla, California.

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Catheter ablation via the left atrium for atrioventricular nodal reentrant tachycardia: A narrative review.

Authors:
Norman C Wang

Heart Rhythm O2 2021 Apr 29;2(2):187-200. Epub 2021 Jan 29.

Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.

Background: Since 1996, it has been recognized that catheter ablation for atrioventricular nodal reentrant tachycardia (AVNRT) may require an approach through the left atrium.

Objective: The purposes are to present a case report and to provide a comprehensive narrative review on this topic.

Methods: A literature review of all articles that provided detailed information on patients who underwent catheter ablation via the left atrium for AVNRT was performed. Read More

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What clinical trials of ablation for atrial fibrillation tell us - and what they do not.

Heart Rhythm O2 2021 Apr 16;2(2):174-186. Epub 2021 Feb 16.

Department of Medicine, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, New York.

Atrial fibrillation (AF) is the most prevalent cardiac arrhythmia in clinical practice. Radiofrequency and cryoballoon catheter ablation are therapeutic options in addition to antiarrhythmic drug therapy for the treatment of AF. Ablation is effective at reducing recurrent atrial arrhythmias and also in the reduction of AF burden. Read More

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Factors predictive for delayed enhancement in cardiac resonance imaging in patients undergoing catheter ablation of premature ventricular complexes.

Heart Rhythm O2 2021 Feb 12;2(1):64-72. Epub 2020 Nov 12.

Division of Cardiovascular Medicine and Radiology, University of Michigan, Ann Arbor, Michigan.

Background: Patients undergoing ablation of premature ventricular complexes (PVCs) can have cardiac scar. Risk factors for the presence of scar are not well defined.

Objectives: To determine the prevalence of scarring detected by delayed enhancement cardiac magnetic resonance imaging (DE-CMR) in patients undergoing ablation of PVCs, to create a risk score predictive of scar, and to explore correlations between the scoring system and long-term outcomes. Read More

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February 2021

Impact of catheter ablation in patients with atrial flutter and concurrent heart failure.

Heart Rhythm O2 2021 Feb 22;2(1):53-63. Epub 2020 Nov 22.

Harrington Heart and Vascular Institute/University Hospitals Cleveland Medical Center/Case Western Reserve University, Cleveland, Ohio.

Background: No studies assessed impact of atrial flutter (AFL) ablation on outcomes in patients with AFL and concurrent heart failure (HF).

Objectives: To assess the effect of AFL ablation on mortality and HF readmissions in patients with AFL and HF.

Methods: This retrospective cohort study identified 15,952 patients with AFL and HF from the 2016-17 Nationwide Readmissions Database. Read More

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February 2021

Catheter ablation and healthcare utilization and cost among patients with paroxysmal versus persistent atrial fibrillation.

Heart Rhythm O2 2021 Feb 15;2(1):28-36. Epub 2020 Dec 15.

Electrophysiology Section, Duke University Hospital & Duke Clinical Research Institute, Durham, North Carolina.

Background: Ablation reduces atrial fibrillation (AF) burden and improves health-related quality of life. The relationship between ablation, healthcare utilization, and AF type (paroxysmal AF [PAF] vs persistent AF [PsAF]) remains unclear.

Objective: To compare changes in AF-related healthcare utilization and costs from preablation to postablation among patients with PAF and PsAF. Read More

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February 2021

Atrioventricular junctional ablation: The good, the bad, the better.

Heart Rhythm O2 2020 Oct 25;1(4):311-314. Epub 2020 Jun 25.

Heart Rhythm Institute, Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.

Background: The management of patients with atrial fibrillation and an abnormally fast ventricular response has been through the use of pharmacologic agents. In those cases where rate control cannot be achieved pharmacologically, a standard approach has been atrioventricular (AV) junctional ablation and ventricular pacemaker implantation to achieve a stable ventricular rate. Long-term ventricular pacing has been shown to result in diminished ventricular function that can lead to heart failure. Read More

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October 2020

Secondary prevention of sudden cardiac death.

Heart Rhythm O2 2020 Oct 27;1(4):297-310. Epub 2020 Aug 27.

Division of General Internal Medicine, University of Washington, Seattle, Washington.

The prevention and treatment of sudden cardiac death (SCD) remains a significant public health challenge. For patients with a history of sudden death attributable to ventricular arrhythmia, implantable cardioverter-defibrillator (ICD) therapy is a mainstay of treatment, although these patients remain at high risk for recurrent ventricular arrhythmia and defibrillator therapies. In this review, we summarize landmark clinical trials evaluating the efficacy of ICD therapy in secondary prevention patients, review clinical outcomes including mode of death in survivors of SCD, and highlight the role for systematic diagnostic evaluation. Read More

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October 2020

Bipolar ablation's unique paradigm: Duration and power as respectively distinct primary determinants of transmurality and steam pop formation.

Heart Rhythm O2 2020 Oct 24;1(4):290-296. Epub 2020 Jun 24.

Department of Electrophysiology Clinical Research and Innovations, Texas Heart Institute, Houston, Texas.

Background: Bipolar radiofrequency (RF) ablation strategies are increasingly used, mainly to target deep myocardial reentrant circuits responsible for ventricular tachycardia that cannot be extinguished with traditional unipolar RF ablation. Because this strategy is novel, factors that affect lesion geometry and steam pop formation require further investigation.

Objective: To assess the effect of contact force, power, and time on the resulting lesion geometry and the risk of steam pop formation during bipolar RF ablation of thick myocardial tissue. Read More

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October 2020

Preventive versus deferred catheter ablation of myocardial infarct-associated ventricular tachycardia: A meta-analysis.

Heart Rhythm O2 2020 Oct 14;1(4):275-282. Epub 2020 Aug 14.

Division of Cardiology, Weill Cornell Medicine - New York Presbyterian Hospital, New York, New York.

Background: The optimal timing of catheter ablation for the treatment of ventricular tachycardia (VT) in patients with ischemic cardiomyopathy remains unclear. Studies examining the impact of early preventive ablation of VT on rates of implantable cardioverter-defibrillator (ICD) therapies and mortality have been limited by small sample size.

Objectives: To conduct a meta-analysis of randomized controlled trials (RCTs) comparing initial catheter ablation and ICD implantation (preventive ablation arm) vs ICD implantation alone (deferred ablation arm) in patients with ischemic cardiomyopathy and VT. Read More

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October 2020

Assessing the perforation site of cardiac tamponade during radiofrequency catheter ablation using gas analysis of pericardial effusion.

Heart Rhythm O2 2020 Oct 24;1(4):268-274. Epub 2020 Jun 24.

Department of Cardiovascular Medicine, Kyorin University Hospital, Tokyo, Japan.

Background: The incidence of pericardial effusion (PE) during radiofrequency catheter ablation (CA) for atrial fibrillation is approximately 1%. PE is a major complication during CA, but there has been limited literature about the perforation site responsible.

Objective: This study aimed to retrospectively investigate the characteristics of the procedure and the patients in whom PE developed during CA. Read More

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October 2020

Interatrial distance predicts the necessity of additional carina ablation to isolate the right-sided pulmonary veins.

Heart Rhythm O2 2020 Oct 25;1(4):259-267. Epub 2020 Aug 25.

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

Background: Ablation of the pulmonary vein (PV) carina is occasionally required for PV isolation (PVI). Marshall bundle and epicardial connections between the right-sided PV (RtPV) carina and right atrium (RA) may be one of the mechanisms that necessitates carina ablation.

Objective: We sought to clarify anatomical characteristics predictive of the necessity of carina ablation. Read More

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October 2020

Decreased anxiety after catheter ablation for paroxysmal atrial fibrillation is associated with augmented parasympathetic reactivity to stress.

Heart Rhythm O2 2020 Aug 10;1(3):189-199. Epub 2020 Jun 10.

Department of Psychiatry, Shizuoka Saiseikai General Hospital, Shizuoka, Japan.

Background: Psychological improvement after catheter ablation for atrial fibrillation (AF) has been reported, but its mechanism is unclear.

Objective: This study aimed to clarify the relationship between cardiac autonomic modification and psychological changes after catheter ablation for paroxysmal AF (PAF).

Methods: Thirty-five consecutive patients (60. Read More

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Catheter ablation of atrial fibrillation in patients with diabetes mellitus.

Heart Rhythm O2 2020 Aug 12;1(3):180-188. Epub 2020 May 12.

Duke Center for Atrial Fibrillation, Department of Medicine, Duke University Medical Center, Durham, North Carolina.

Background: Diabetes mellitus (DM) is an independent risk factor for atrial fibrillation (AF). Few studies have compared clinical outcomes after catheter ablation between patients with and those without DM.

Objective: The purpose of this study was to compare AF ablation outcomes in patients with and those without DM. Read More

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Risk of atrioesophageal fistula with cryoballoon ablation of atrial fibrillation.

Heart Rhythm O2 2020 Aug 28;1(3):173-179. Epub 2020 May 28.

Virginia Commonwealth University Medical Center, Richmond, Virginia.

Background: Although there are considerable data on the safety of cryoablation, data on the rare but severe complication of atrioesophageal fistula (AEF) following cryoballoon ablation are limited.

Objective: To report the global, user-reported incidence of AEF associated with cryoballoon ablation for the treatment of atrial fibrillation using Medtronic's complaint database.

Methods: User-reported cryoballoon ablation complications occurring between July 1, 2009, and March 31, 2019, were reviewed to identify cases of AEF. Read More

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Introducing a novel catheter-tissue contact feedback feature in robotic navigated catheter ablation: Utility, feasibility, and safety.

Heart Rhythm O2 2020 Jun 11;1(2):103-110. Epub 2020 May 11.

Department of Cardiology, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands.

Background: The quality of catheter-tissue contact is one of the most important determinants of catheter ablation (CA) success. The absence of catheter-tissue contact feedback has been regarded a major limitation of remote magnetic navigation (RMN)-guided CA. The e-Contact module (ECM) is a novel feature designed for RMN that measures the quality of catheter-tissue contact. Read More

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Spatial relationship between the pulmonary trunk and the left coronaries: Systematic risk assessment based on automated three-dimensional distance measurements.

Heart Rhythm O2 2020 Apr 27;1(1):14-20. Epub 2020 Apr 27.

Informatics for Life, Heidelberg, Germany.

Background: Catheter ablation of right ventricular outflow tract ventricular arrhythmias from above the pulmonary valve is being increasingly reported.

Objective: The purpose of this study was to systematically analyze the spatial relationship between the pulmonary trunk and the left coronaries.

Methods: Contrast-enhanced computed tomographic scans from 58 patients were analyzed. Read More

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A case of Wolff-Parkinson-White syndrome in which two-dimensional speckle-tracking echocardiography was useful for identifying the location of the accessory atrioventricular pathway.

Eur Heart J Case Rep 2021 Mar 4;5(3):ytab078. Epub 2021 Mar 4.

Division of Cardiology, Shimane University Faculty of Medicine, 89-1 Enya-cho, Izumo 693-8501, Japan.

Background: In Wolff-Parkinson-White (WPW) syndrome, accessory atrioventricular pathways (AP) result in abnormal pre-excitation around the atrioventricular annuli and produce a dyssynchronous contraction of cardiac chambers. Identification of the AP affects the outcome of catheter ablation.

Case Summary: We report a case of WPW syndrome and paroxysmal atrial fibrillation in a 65-year-old man. Read More

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Heart Rate Variability and Clinical Features as Predictors of Atrial Fibrillation Recurrence After Catheter Ablation: A Pilot Study.

Front Physiol 2021 25;12:672896. Epub 2021 May 25.

Department of Electronics, Information and Bioengineering, Politecnico di Milano, Milan, Italy.

Single-procedure catheter ablation success rate is as low as 52% in atrial fibrillation (AF) patients. This study evaluated the feasibility of using clinical data and heart rate variability (HRV) features extracted from an implantable cardiac monitor (ICM) to predict recurrences in patients prior to undergoing catheter ablation for AF. HRV-derived features were extracted from the 500 beats preceding the AF onset and from the first 2 min of the last AF episode recorded by an ICM of 74 patients (67% male; 57 ± 12 years; 26% non-paroxysmal AF; 57% AF recurrence) before undergoing their first AF catheter ablation. Read More

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Prevalence of Left Atrial Thrombus in Anticoagulated Patients With Atrial Fibrillation.

J Am Coll Cardiol 2021 Jun;77(23):2875-2886

Population Health Research Institute, Hamilton, Ontario, Canada; Hamilton Health Sciences Centre, Hamilton, Ontario, Canada; Department of Medicine, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada. Electronic address:

Background: The prevalence of left atrial (LA) thrombus in patients with atrial fibrillation (AF) or atrial flutter (AFL) on guideline-directed anticoagulation is not well known, yet this may inform transesophageal echocardiogram (TEE) use before cardioversion or catheter ablation.

Objectives: The purpose of this study was to quantify LA thrombus prevalence among patients with AF/AFL on guideline-directed anticoagulation and to identify high-risk subgroups.

Methods: EMBASE, MEDLINE, and CENTRAL were systematically searched from inception to July 2020 for studies reporting on LA thrombus prevalence among patients with AF/AFL undergoing TEE following at least 3 weeks of continuous therapeutic oral anticoagulation with vitamin K antagonists (VKAs) or direct oral anticoagulants (DOACs). Read More

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Significance of Contact Force on Esophageal Thermal Injury During Relative High-Power Short-Duration Ablation of Atrial Fibrillation.

Circ Arrhythm Electrophysiol 2021 Jun 11:CIRCEP121009897. Epub 2021 Jun 11.

Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan. (T.K., K.A., N.H., M.N., S.Y., T.Y., T.M., A.Y., Y.T.).

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Asian Conference on Tumor Ablation Guidelines for Adrenal Tumor Ablation.

Endocrinol Metab (Seoul) 2021 Jun 1. Epub 2021 Jun 1.

Department of Diagnostic Radiology, Tan Tock Seng Hospital, Singapore.

Thermal ablation is a good alternative treatment in patients who are unable to undergo adrenalectomy. Even though the Asian Conference on Tumor Ablation (ACTA) has been held for many years, adrenal ablation guidelines have not been established. No guidelines for adrenal ablation are established in American and European countries, either. Read More

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Short- and mid-term outcomes in percutaneous mitral valve replacement using balloon expandable valves.

Catheter Cardiovasc Interv 2021 Jun 9. Epub 2021 Jun 9.

Center for Structural Heart Disease, Henry Ford Health System, Detroit, Michigan, USA.

Background: Due to elevated surgical risk, transcatheter mitral valve replacement (TMVR) is used as an alternative for treating failed bioprosthetic valves, annuloplasty repairs and mitral annular calcification (MAC). We report the procedural and longitudinal outcomes for each subtype: Mitral valve-in-valve (MVIV), mitral valve-in-ring (MViR), and valve-in-MAC (ViMAC).

Methods: Consecutive patients undergoing TMVR from October 2013 to December 2019 were assessed. Read More

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Catheter ablation of supraventricular tachycardia in patients with and without structural heart disease: insights from the German ablation registry.

Clin Res Cardiol 2021 Jun 9. Epub 2021 Jun 9.

Department of Electrophysiology, University Heart Center Lübeck, Medical Clinic II, University Hospital Schleswig-Holstein, Ratzeburger Allee 160, 23538, Lübeck, Germany.

Aim: To compare patient characteristics, safety and efficacy of catheter ablation of supraventricular tachycardia (SVT) in patients with and without structural heart disease (SHD) enrolled in the German ablation registry.

Methods And Results: From January 2007 until January 2010, a total of 12,536 patients (37.2% with known SHD) were enrolled and followed for at least one year. Read More

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Atrial Fibrillation Ablation Using Vein of Marshall Ethanol Infusion.

Methodist Debakey Cardiovasc J 2021 Apr 25;17(1):52-55. Epub 2021 Mar 25.

Houston Methodist DeBakey Heart & Vascular Center, Houston Methodist Hospital, Houston, Texas.

Catheter ablation has become a cornerstone treatment for atrial fibrillation (AF). Pulmonary vein isolation is the accepted approach for paroxysmal AF ablation, but it is less effective for persistent AF. The vein of Marshall (VOM) is located in the epicardial left atrium and can be a source of AF triggers as well as a tract for autonomic nerves. Read More

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Surgery for Ventricular Tachycardia.

Authors:
Gerald M Lawrie

Methodist Debakey Cardiovasc J 2021 Apr 25;17(1):36-42. Epub 2021 Mar 25.

Houston Methodist DeBakey Heart & Vascular Center, Houston Methodist Hospital, Houston, Texas.

The treatment of drug-refractory chronic ventricular tachycardia (VT) has undergone a revolution over the last 50 years. We now have automatic implantable cardioverter defibrillator therapy with pace-terminating capabilities, and catheter ablation of VT has refined mapping and improved methods of lesion generation. Between 1980 and 1993, Houston Methodist Hospital became a leader in the diagnosis and surgical ablation of VT and other arrhythmias. Read More

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Surgical Cardiac Sympathetic Denervation for Ventricular Arrhythmias: A Systematic Review.

Methodist Debakey Cardiovasc J 2021 Apr 25;17(1):24-35. Epub 2021 Mar 25.

Houston Methodist Hospital, Houston, Texas.

Ventricular arrhythmias are potentially life-threatening disorders that are commonly treated with medications, catheter ablation and implantable cardioverter defibrillator (ICD). Adult patients who continue to be symptomatic, with frequent ventricular arrhythmia cardiac events or defibrillation from ICD despite medical treatment, are a challenging subgroup to manage. Surgical cardiac sympathetic denervation has emerged as a possible treatment option for people refractory to less invasive medical options. Read More

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Alcohol Ablation for Ventricular Tachycardia.

Methodist Debakey Cardiovasc J 2021 Apr 25;17(1):19-23. Epub 2021 Mar 25.

Houston Methodist Debakey Heart & Vascular Center, Houston Methodist Hospital, Houston, Texas.

Catheter-based radiofrequency (RF) ablation is an effective, well-established therapy for ventricular tachycardia (VT). However, a large number of patients still have recurrences, particularly those with substrates arising from intramural locations that are inaccessible through endo- or epicardial catheter approaches. Several unconventional ablation techniques have been proposed to treat RF-refractory VT, including transarterial coronary ethanol ablation and retrograde coronary venous ethanol ablation. Read More

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