10,309 results match your criteria Atrial Flutter


A broad complex tachycardia in a patient on flecainide.

Br J Cardiol 2021 14;28(3):34. Epub 2021 Jul 14.

Consultant Cardiologist Department of Cardiology, Medway Maritime Hospital, Windmill Road, Gillingham, Kent, ME7 5NY.

This is an interesting case of wide complex tachycardia in a patient on flecainide for paroxysmal atrial fibrillation. Diagnostic possibilities were discussed, actual diagnosis revealed, and explanation provided. Read More

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ECG changes in hospitalised patients with COVID-19 infection.

Br J Cardiol 2021 2;28(2):24. Epub 2021 Jun 2.

Consultant Cardiologist and Departmental Research Lead Birmingham City Hospital, SWBH NHS Trust, Dudley Road, Birmingham, B18 7QH.

The coronavirus disease 2019 (COVID-19) commonly involves the respiratory system but increasingly cardiovascular involvement is recognised. We assessed electrocardiogram (ECG) abnormalities in patients with COVID-19. We performed retrospective analysis of the hospital's COVID-19 database from April to May 2020. Read More

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DE-PNN: Differential Evolution-Based Feature Optimization with Probabilistic Neural Network for Imbalanced Arrhythmia Classification.

Sensors (Basel) 2022 Jun 12;22(12). Epub 2022 Jun 12.

BioComputing Lab., Institute for Bio-Engineering Application Technology, Department of Computer Science and Engineering, KOREATECH, Cheonan 31253, Korea.

In this research, a heartbeat classification method is presented based on evolutionary feature optimization using differential evolution (DE) and classification using a probabilistic neural network (PNN) to discriminate between normal and arrhythmic heartbeats. The proposed method follows four steps: (1) preprocessing, (2) heartbeat segmentation, (3) DE feature optimization, and (4) PNN classification. In this method, we have employed direct signal amplitude points constituting the heartbeat acquired from the ECG holter device with no secondary feature extraction step usually used in case of hand-crafted, frequency transformation or other features. Read More

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Procedural Feasibility and Long-Term Efficacy of Catheter Ablation of Atypical Atrial Flutters in a Wide Spectrum of Heart Diseases: An Updated Clinical Overview.

J Clin Med 2022 Jun 9;11(12). Epub 2022 Jun 9.

Department of Medicine and Surgery, University of Insubria, 21100 Varese, Italy.

Atypical atrial flutters (AAFL) are difficult-to-manage atrial arrhythmias, yet potentially amenable to effective radiofrequency catheter ablation (CA). However, data on CA feasibility are only sparingly reported in the literature in different clinical settings, such as AAFL related to surgical correction of congenital heart disease. The aim of this review was to provide an overview of the clinical settings in which AAFL may occur to help the cardiac electrophysiologist in the prediction of the tachycardia circuit location before CA. Read More

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Experience of Combined Procedure during Percutaneous LAA Closure.

J Clin Med 2022 Jun 8;11(12). Epub 2022 Jun 8.

Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec City, QC G1V 4G5, Canada.

Introduction: Percutaneous left atrial appendage closure (LAAC) is an alternative to oral anticoagulants (OAC) in patients with non-valvular atrial fibrillation (AF) and contraindication to long-term OAC. Combined strategy with percutaneous LAAC at the same time of other cardiac structural or electrophysiological procedures has emerged as an alternative to a staged strategy.

Aim: To describe our experience with combined LAAC procedures using Watchman™ devices. Read More

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Pulmonary Veins Morphometric Characteristics and Spatial Orientation Influence on Its Cryoballoon Isolation Results.

Diagnostics (Basel) 2022 May 26;12(6). Epub 2022 May 26.

Federal State Budgetary Institution 'Research Institute for Complex Issues of Cardiovascular Diseases', 6, Sosonoviy Blvd., 650002 Kemerovo, Russia.

The aim of this paper is to evaluate the effect of pulmonary vein (PV) morphometric characteristics and spatial orientation on the results of cryoballoon ablation (CBA).

Methods: A randomized, prospective, single-center controlled study was conducted, enrolling 230 patients with drug-refractory atrial fibrillation (AF). We compared procedural and long-term outcomes in patients who underwent their first procedure of pulmonary vein isolation (PVI) for AF with either radiofrequency ablation (RFA) ( = 108) or CBA ( = 122) and assessed their interaction with the different pattern of PV anatomy, morphometric characteristics, and spatial orientation. Read More

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Coronary Artery Bypass Grafting in Octogenarians-Risks, Outcomes, and Trends in 1283 Consecutive Patients.

Mayo Clin Proc 2022 Jun 7. Epub 2022 Jun 7.

Department of Cardiovascular Surgery, Rochester, MN. Electronic address:

Objective: To describe the risks, outcomes, and trends in patients older than 80 years undergoing coronary artery bypass grafting (CABG).

Methods: We retrospectively studied 1283 consecutive patients who were older than 80 years and underwent primary isolated CABG from January 1, 1993, to October 31, 2019, in our clinic. Kaplan-Meier survival probability and quartile estimates were used to analyze patients' survival. Read More

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Efficacy and Safety of a Combined Aerobic, Strength and Flexibility Exercise Training Program in Patients with Implantable Cardiac Devices.

J Cardiovasc Dev Dis 2022 Jun 6;9(6). Epub 2022 Jun 6.

Institute of Sports Medicine, Sport e Salute, 00197 Rome, Italy.

: The "FIDE Project" (Fitness Implantable DEvice) was organized by the Institute of Sports Medicine and Science and the World Society of Arrhythmias with the aim of demonstrating the usefulness of exercise training in improving functional capacity in patients with implantable cardiac devices. : Thirty sedentary patients were selected for the project (25 males and 5 females), with a mean age of 73 ± 5 years (range 44-94 years). Twenty-five were implanted with a Pacemaker (PM) and five with an Implantable Cardioverter Defibrillator (ICD). Read More

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Case report. Thrombus formation on left atrial appendage clip: surgical exclusion and anticoagulation do not obviate transesophageal echocardiography prior to cardioversion.

Eur Heart J Case Rep 2022 Jun 14;6(6):ytac160. Epub 2022 Apr 14.

Section of Cardiovascular Imaging, Department of Cardiovascular Medicine, Heart, Vascular, and Thoracic Institute, Cleveland Clinic, Cleveland, 9500 Euclid Avenue, Desk J1 44195 OH, USA.

Background: The cornerstone treatment for atrial fibrillation (Afib) is based on the prevention of cardioembolism with the use oral anticoagulants, which inherently increase the risk of bleeding. An alternative for these patients corresponds to left atrial appendage (LAA) exclusion/closure techniques such as .

Cases Summary: : Seventy-two-year-old female who presented with decompensated heart failure, non ST elevation myocardial infarct, and paroxysmal Afib. Read More

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Correlation between sinus rhythm deceleration zones and critical sites for localized reentrant atrial flutter: A retrospective multicenter analysis.

Heart Rhythm O2 2022 Jun 29;3(3):279-287. Epub 2022 Mar 29.

Banner Cardiovascular Center, The University of Arizona College of Medicine-Phoenix, Phoenix, Arizona.

Background: Atypical left atrial flutter (AFL) may be macroreentrant or spatially localized. The relationship between the critical isthmus (CI) for localized reentry with sinus rhythm (SR) conduction slowing has not been systematically examined.

Objective: To examine the correlation between CI sites for localized AFL (L-AFL) and deceleration zones (DZ) identified by isochronal late activation mapping (ILAM) during baseline rhythm. Read More

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Long-term outcome of patients with long-standing persistent atrial fibrillation undergoing ablation guided by a novel high-density panoramic mapping system: A propensity score matching study.

Heart Rhythm O2 2022 Jun 19;3(3):269-278. Epub 2022 Apr 19.

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

Background: Catheter ablation is a current therapeutic approach for atrial fibrillation (AF). However, its efficacy for long-standing persistent AF remains suboptimal.

Objective: The purpose of this study was to test the hypothesis that a panoramic mapping system (CARTOFINDER, Biosense Webster) can guide pulmonary vein (PV) isolation and additional potential AF drivers. Read More

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Impact of dronedarone on patients with atrial fibrillation and diabetes: A sub-analysis of the ATHENA and EURIDIS/ADONIS studies.

J Diabetes Complications 2022 Jun 8:108227. Epub 2022 Jun 8.

Lankenau Heart Institute, Lankenau Medical Center, Wynnewood, PA, United States of America. Electronic address:

Aim: This post hoc analysis evaluated efficacy and safety of dronedarone in atrial fibrillation (AF) and atrial flutter (AFL) patients with/without diabetes.

Methods: Patients were categorized according to baseline diabetes status. Time-to-event analyses were performed using Kaplan-Meier method. Read More

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Major adverse cardiovascular events after diagnosis of myocardial injury and types 1 and 2 myocardial infarction.

Eur Heart J Acute Cardiovasc Care 2022 Jun 18. Epub 2022 Jun 18.

Department of Cardiovascular Diseases, Mayo Clinic, 200 1st St SW, Rochester, MN, USA.

Aims: Limited US outcome data exist among patients with myocardial injury and types 1 and 2 myocardial infarction (MI) evaluated with high-sensitivity cardiac troponin (hs-cTn).

Methods And Results: This is an observational US cohort study of emergency department (ED) patients undergoing hs-cTnT measurement. Cases with ≥1 hs-cTnT increase >99th percentile were adjudicated following the Fourth Universal Definition of MI. Read More

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Longitudinal Risk of Death, Hospitalisations for Atrial Fibrillation and Cardiovascular Events Following Catheter Ablation of Atrial Fibrillation: A Cohort Study.

Eur Heart J Qual Care Clin Outcomes 2022 Jun 14. Epub 2022 Jun 14.

School of Clinical Medicine, Faculty of Medicine, The University of Queensland, Queensland, Australia.

Background: Population studies reporting contemporary long-term outcomes following catheter ablation of atrial fibrillation (AF) are sparse.

Objective: To evaluate long-term clinical outcomes following AF ablation and examine variation in outcomes by age, sex, and the presence of heart failure.

Methods And Results: We identified 30,601 unique patients (mean age 62. Read More

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Meta-analysis of cardiovascular outcome trials assessing the impact of glucagon-like peptide-1 receptor agonists on major cardiac arrhythmias.

Acta Cardiol 2022 Jun 14:1-6. Epub 2022 Jun 14.

Third Department of Cardiology, Ippokratio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.

Objective: Glucagon-like peptide-1 receptor agonists (GLP-1RAs), a group of novel antidiabetic agents, demonstrated beneficial cardiovascular effects in recent large, placebo-controlled randomised clinical trials (RCTs); their clear antiarrhythmic benefit has not been yet underlined. The purpose of the present meta-analysis is to clarify the impact of GLP-1RAs on different types of cardiac arrhythmias.

Methods: We searched PubMed from its inception up to 8 October 2020 for all available cardiovascular and renal outcome, placebo-controlled RCTs utilising GLP-1RAs versus placebo. Read More

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Ten Steps in Adoption of Emerging Procedural Techniques: An Experience With Ethanol Ablation of Vein of Marshall (VOM).

Cureus 2022 May 12;14(5):e24948. Epub 2022 May 12.

Cardiac Electrophysiology, Baylor Scott & White The Heart Hospital, Plano, USA.

Proceduralists must update their skill sets to provide patients with better care because of the addition of new and effective strategies post-training. For example, the current procedural strategy of pulmonary vein isolation for treating persistent atrial fibrillation (AF) is inadequate. However, the addition of ethanol ablation of the vein of Marshall (VOM), a relatively new procedural technique, can improve outcomes. Read More

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All that quivers is not real: recognising pseudo-atrial flutter.

Singapore Med J 2022 Apr;63(4):192-195

Department of Cardiology, National University Heart Centre Singapore, National University Health System, Singapore.

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Indications for ordering thyroid-stimulating hormone in noncritically ill adult inpatients-A Delphi consensus recommendation.

J Hosp Med 2022 Jun 13. Epub 2022 Jun 13.

Department of Medicine, McMaster University, Hamilton, Ontario, Canada.

Background: Thyroid-stimulating hormone (TSH) is ordered commonly among inpatients, but the possibility of nonthyroidal illness syndrome challenges interpretation.

Objective: Our objective was to obtain Canadian consensus on appropriate indications for ordering TSH in the first 48 h following presentation of a noncritically ill internal medicine patient.

Design, Setting And Participants: Canadian endocrinologists with inpatient expertise were invited via snowball sampling to an online 3-round Delphi study. Read More

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The effectiveness of SGLT2 inhibitor in the incidence of atrial fibrillation/atrial flutter in patients with type 2 diabetes mellitus/heart failure: a systematic review and meta-analysis.

J Thorac Dis 2022 May;14(5):1620-1637

Department of Cardiology, The Second Affiliated Hospital of Shanxi Medical University, Taiyuan, China.

Background: Type 2 diabetes mellitus (T2D) and heart failure (HF) are closely related to the increased risk of atrial fibrillation (AF)/atrial flutter (AFL). However, massive clinical studies have shown that sodium glucose cotransporter 2 inhibitor (SGLT2i) affects the occurrence of AF/AFL and its complications, but the promoting or inhibitory effect of SGLT2i on AF/AFL and its complications and the exact probability is not clear, meta-analysis can combine the existing research data to easily solve the clinical problems.

Methods: We performed a search in the registers of ClinicalTrials. Read More

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What should we do for atrial fibrillation patients that experience arrhythmia recurrence despite chronically isolated pulmonary veins?

J Cardiovasc Electrophysiol 2022 Jun 11. Epub 2022 Jun 11.

Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Hospital of The University of Pennsylvania, Philadelphia, Pennsylvania, USA.

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Outcomes of atrial fibrillation ablation in patients with or without silent pulmonary veins from prior ablation procedure.

J Cardiovasc Electrophysiol 2022 Jun 11. Epub 2022 Jun 11.

Section of Cardiac Pacing and Electrophysiology, Cleveland Clinic, Cleveland, Ohio, USA.

Introduction: Pulmonary venous (PV) electrical recovery underlies most arrhythmia recurrences after atrial fibrillation (AF) ablation. Little is known about procedural profiles and outcomes of patients with electrically silent PVs upon redo ablation for AF.

Methods: In a prospectively maintained registry, we enrolled 838 consecutive patients (2013-2016) undergoing redo ablation procedures. Read More

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Detection of the origin of atrial tachycardia by 3D electro-anatomical mapping and treatment by radiofrequency catheter ablation in horses.

J Vet Intern Med 2022 Jun 9. Epub 2022 Jun 9.

Equine Cardioteam Ghent University, Department of Large Animal Internal Medicine, Ghent University, Merelbeke, Belgium.

Background: Atrial tachycardia (AT) can be treated by medical or electrical cardioversion but the recurrence rate is high. Three-dimensional electro-anatomical mapping, recently described in horses, might be used to map AT to identify a focal source or reentry mechanism and to guide treatment by radiofrequency ablation.

Objectives: To describe the feasibility of 3D electro-anatomical mapping and radiofrequency catheter ablation to characterize and treat sustained AT in horses. Read More

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Sinus Node Dysfunction after Successful Atrial Flutter Ablation during Follow-Up: Clinical Characteristics and Predictors.

J Clin Med 2022 Jun 4;11(11). Epub 2022 Jun 4.

Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei 11217, Taiwan.

Identification of sinus node dysfunction (SND) before termination of persistent AFL by catheter ablation (CA) is challenging. This study aimed to investigate the characteristics and predictors of acute and delayed SND after AFL ablation. We retrospectively enrolled 221 patients undergoing CA of persistent AFL in a tertiary referral center. Read More

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Cardioversion of Post-Ablation Atrial Tachyarrhythmia with Ibutilide and Amiodarone: A Registry-Based Cohort Study.

Int J Environ Res Public Health 2022 May 28;19(11). Epub 2022 May 28.

Medical University of Vienna, Department of Emergency Medicine, Waehringer Guertel 18-20, 1090 Vienna, Austria.

Patients with recurrence of atrial tachyarrhythmia after catheter ablation for atrial fibrillation or atrial flutter constitute a rapidly growing cohort, but study-driven treatment recommendations are lacking. The present study aimed to compare the cardioversion success of ibutilide and amiodarone in patients with post-ablation atrial tachyarrhythmia. We included all episodes of post-ablation atrial tachyarrhythmia in patients treated with either intravenous ibutilide or amiodarone at an academic emergency department from 2010 to 2018. Read More

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Embolic stroke of undetermined source: beyond atrial fibrillation.

Neurologia (Engl Ed) 2022 Jun 27;37(5):362-370. Epub 2021 Apr 27.

Queen's University, Kingston, Ontario, Canada.

Introduction: Embolic stroke of undetermined source (ESUS) accounts for 25% of all cerebral infarcts; only 30% are associated with paroxysmal atrial fibrillation (AF). Various biochemical, electrocardiographic, and echocardiographic findings may suggest left atrial damage and increased risk of embolism in the absence of clinically documented AF or atrial flutter. In this review, we analyse the available evidence on atrial cardiopathy or atrial disease, its involvement in ESUS, and its identification through electrocardiographic, echocardiographic, and serum markers and its possible therapeutic implications. Read More

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Effect of Sodium-Glucose Co-transporter Protein 2 Inhibitors on Arrhythmia in Heart Failure Patients With or Without Type 2 Diabetes: A Meta-Analysis of Randomized Controlled Trials.

Front Cardiovasc Med 2022 18;9:902923. Epub 2022 May 18.

College of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China.

Aim: Arrhythmic events such as atrial fibrillation (AF) are tightly associated with an increased risk of heart failure (HF). Previous studies have shown inconsistent results regarding the association between sodium-glucose co-transporter 2 inhibitors (SGLT2i) and the risk of arrhythmia. The purpose of this study was to investigate the association of SGLT2i treatment with arrhythmia outcomes in clinical trials of patients with HF. Read More

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Corrigendum to 'Presumptive vagally-mediated atrial flutter in a dog' [J Vet Cardiol (2022) 39, 46-50].

J Vet Cardiol 2022 May 21;42:14. Epub 2022 May 21.

Division of Cardiology, Vetsuisse Faculty University of Zurich, Winterthurerstrasse 260, 8057, Zurich, Switzerland.

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The next heartbeat: Creating dynamic and histographic Poincaré plots for the assessment of cardiac rhythms.

J Vet Cardiol 2022 May 6;42:1-13. Epub 2022 May 6.

The Royal Veterinary College, University of London, London, England, UK.

The rhythm of the heart is not a stationary phenomenon, and therefore, incorporation of the dynamic Poincaré plot and tachogram provides additional diagnostic information to complement and expand waveform (P-QRST) analyses from the electrocardiogram. Although pattern assessment of the Poincaré plot and tachogram can provide an appraisal for normal and abnormal rhythms and serve as a potential means for machine-learned rhythm diagnoses, time-selected windows of beat-to-beat variability permit more detailed examination. As such, expanded criteria for rhythm diagnoses, identification of arrhythmic triggers, global appreciation of rhythm changes, and recognition of patterns that provoke mechanistic questions may be gleaned from the use of the methods reviewed in this report. Read More

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A multi-population phenome-wide association study of genetically-predicted height in the Million Veteran Program.

PLoS Genet 2022 06 2;18(6):e1010193. Epub 2022 Jun 2.

Veterans Affairs Palo Alto Health Care System, Palo Alto, California, United States of America.

Background: Height has been associated with many clinical traits but whether such associations are causal versus secondary to confounding remains unclear in many cases. To systematically examine this question, we performed a Mendelian Randomization-Phenome-wide association study (MR-PheWAS) using clinical and genetic data from a national healthcare system biobank.

Methods And Findings: Analyses were performed using data from the US Veterans Affairs (VA) Million Veteran Program in non-Hispanic White (EA, n = 222,300) and non-Hispanic Black (AA, n = 58,151) adults in the US. Read More

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The coherent module use for mapping of atypical atrial flutter.

Cardiol J 2022 ;29(3):525-526

3rd Department of Cardiology, Silesian Center for Heart Diseases, Zabrze, Zabrze, Poland.

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