17,841 results match your criteria Atrial Tachycardia

Prospective blinded evaluation of smartphone-based ECG for differentiation of supraventricular tachycardia from inappropriate sinus tachycardia.

Clin Res Cardiol 2021 May 7. Epub 2021 May 7.

Department of Cardiology II-Electrophysiology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149, Muenster, Germany.

Introduction: Supraventricular tachycardias (SVT) are often difficult to document due to their intermittent, short-lasting nature. Smartphone-based one-lead ECG monitors (sECG) were initially developed for the diagnosis of atrial fibrillation. No data have been published regarding their potential role in differentiating inappropiate sinus tachycardia (IST) from regular SVT. Read More

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Heart failure and atrial fibrillation: tachycardia-mediated acute decompensation.

ESC Heart Fail 2021 May 6. Epub 2021 May 6.

Cardiovascular Center, Division of Cardiology, Seoul National University Bundang Hospital, Gumiro 166, Bundang, Seongnam, Republic of Korea.

Aims: Tachycardia is a reversible event that may cause hemodynamic decompensation but may not necessarily cause direct damages to the myocardium. To evaluate the clinical outcomes of patients with heart failure (HF) and atrial fibrillation (AF), whose acute decompensation was tachycardia mediated.

Methods And Results: The Korean Acute Heart Failure registry was a prospective registry that consecutively enrolled 5625 patients with acute HF. Read More

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The Utility of a Novel Mapping Algorithm Utilizing Vectors and Global Pattern of Propagation for Scar-Related Atrial Tachycardias.

J Cardiovasc Electrophysiol 2021 May 5. Epub 2021 May 5.

Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH.

Background: Activation maps of scar-related atrial tachycardias (AT) can be challenging to interpret due to difficulty in inaccurate annotation of electrograms, and an arbitrarily predefined mapping window. A novel mapping software integrating vector data and applying an algorithmic solution taking into consideration global activation pattern has been recently described (Coherent™, Biosense Webster "Investigational").

Objective: We aimed to assess the investigational algorithm to determine the mechanism of AT compared with the standard algorithm. Read More

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Re-Interpreting Complex Atrial Tachycardia Maps Using Global Atrial Vectors.

J Cardiovasc Electrophysiol 2021 May 5. Epub 2021 May 5.

Cardiovascular Institute, Stanford University, Stanford, CA, USA.

The mapping and ablation of Atrial Tachycardias (AT) can be challenging, particularly in patients with prior ablation or structural atrial disease. This article is protected by copyright. All rights reserved. Read More

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Sipuleucel-T associated inflammatory cardiomyopathy: a case report and observations from a large pharmacovigilance database.

ESC Heart Fail 2021 May 2. Epub 2021 May 2.

Department of Pharmacology, Regional Pharmacovigilance Centre, Pitié-Salpêtrière Hospital, Sorbonne Université, INSERM CIC-1901, AP-HP, Paris, France.

Aims: The major cardiovascular (CV) adverse effects observed with sipuleucel-T from large multi-institutional clinical trials included thromboembolic events, myocardial infarction, and congestive heart failure in up to 0.3% of patients with CV risk factors. The incidence, outcomes, and mechanisms in real-world clinical settings of these CV adverse effects to date have not been fully elucidated. Read More

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A Case of Atrial Flutter Masking Acute Pericarditis.

Cureus 2021 Mar 29;13(3):e14168. Epub 2021 Mar 29.

Cardiology, University of South Florida Morsani College of Medicine, Tampa, USA.

Atrial flutter (AFL) is a macro-reentrant tachycardia that can be provoked by numerous factors, including acute pericarditis. We present a case of new-onset AFL masking acute pericarditis in a man with multiple comorbid conditions, including hypertension, chronic kidney disease, and obstructive sleep apnea. After a failed attempt of rate control, the patient underwent successful cardioversion, which revealed electrocardiographic findings consistent with acute pericarditis. Read More

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Fractionation Mapping of the Ganglionated Plexi for Cardioneuroablation.

J Innov Card Rhythm Manag 2021 Apr 15;12(4):4473-4476. Epub 2021 Apr 15.

Division of Cardiology, Medical University of South Carolina, Charleston, SC, USA.

Cardioneuroablation (CNA) is an emerging technique used to treat patients with vasovagal syncope (VVS). We herein describe a case of CNA targeting the atrial ganglionated plexi (GPs) based upon anatomical landmarks and fractionated electrogram (EGM) localization in a 20-year-old healthy female who presented to our center with malignant VVS and symptomatic sinus pauses, the longest of which measured 10 seconds. She underwent acutely successful CNA with a demonstration of vagal response noted following ablation of the left-sided GPs, and tachycardia was noted with right-sided GP ablation. Read More

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Effect of Pre-procedural Pharmacological Cardioversion on Pulmonary Vein Isolation in Patients with Persistent Atrial Fibrillation.

Heart Rhythm 2021 Apr 28. Epub 2021 Apr 28.

Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama, Okayama 700-8558, Japan.

Background: The optimal strategy for catheter ablation of persistent atrial fibrillation (PeAF) remains unknown. A pre-procedural additive treatment for patients undergoing pulmonary vein isolation (PVI) alone should be investigated to optimize the catheter ablation.

Objective: To determine whether pharmacological cardioversion with a fixed low-dose anti-arrhythmic drug (AAD) before ablation could stratify the long-term outcome of a PVI-alone strategy. Read More

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Efficacy and safety of ethanol infusion into the vein of Marshall for mitral isthmus ablation.

J Cardiovasc Electrophysiol 2021 Apr 29. Epub 2021 Apr 29.

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

Introduction: Chemical ablation by retrograde infusion of ethanol into the vein of Marshall (VOM-EI) can facilitate the achievement of mitral isthmus block. This study sought to describe the efficacy and safety of this technique.

Methods And Results: Twenty-two consecutive patients (14 males, median age 71 years) with attempted VOM-EI for mitral isthmus ablation were included in the study. Read More

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Mapping and Ablation of Post-AF Atrial Tachycardias.

Aman Chugh

J Cardiovasc Electrophysiol 2021 Apr 29. Epub 2021 Apr 29.

Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, MI.

Atrial tachycardias (AT) are commonly encountered in patients undergoing catheter ablation of persistent atrial fibrillation (AF). Unlike typical atrial flutter that can be readily recognized and ablated, these post-AF tachycardias can arise from a wide variety of locations and involve a multiplicity of mechanisms. Apart from diagnostic challenges, radiofrequency ablation to eliminate the tachycardias may require multiple approaches. Read More

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Home Management of Heart Failure and Arrhythmias in Patients with Cardiac Devices during Pandemic.

J Clin Med 2021 Apr 11;10(8). Epub 2021 Apr 11.

Department of Biomedicine and Prevention, Tor Vergata University, 00133 Rome, Italy.

Background: The in-hospital management of patients with cardiac implantable electronic devices (CIEDs) changed early in the COVID-19 pandemic. Routine in-hospital controls of CIEDs were converted into remote home monitoring (HM). The aim of our study was to investigate the impact of the lockdown period on CIEDs patients and its influence on in-hospital admissions through the analysis of HM data. Read More

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Flecainide How and When: A Practical Guide in Supraventricular Arrhythmias.

J Clin Med 2021 Apr 2;10(7). Epub 2021 Apr 2.

CardioArrhythmology Center, 00161 Rome, Italy.

Transcatheter ablation was increasingly and successfully used to treat symptomatic drug refractory patients affected by supraventricular arrhythmias. Antiarrhythmic drug treatment still plays a major role in patient management, alone or combined with non-pharmacological therapies. Flecainide is an IC antiarrhythmic drug approved in 1984 from the Food and Drug Administration for the suppression of sustained ventricular tachycardia and later for acute cardioversion of atrial fibrillation and for sinus rhythm maintenance. Read More

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Parameter variations in personalized electrophysiological models of human heart ventricles.

PLoS One 2021 28;16(4):e0249062. Epub 2021 Apr 28.

Institute of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg, Russia.

The objectives of this study were to evaluate the accuracy of personalized numerical simulations of the electrical activity in human ventricles by comparing simulated electrocardiograms (ECGs) with real patients' ECGs and analyzing the sensitivity of the model output to variations in the model parameters. We used standard 12-lead ECGs and up to 224 unipolar body-surface ECGs to record three patients with cardiac resynchronization therapy devices and three patients with focal ventricular tachycardia. Patient-tailored geometrical models of the ventricles, atria, large vessels, liver, and spine were created using computed tomography data. Read More

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Epicardial ablation of recurrent left atrial macroreentrant tachycardia from Bachmann's bundle region after endocardial ablation.

Pacing Clin Electrophysiol 2021 Apr 28. Epub 2021 Apr 28.

Hacettepe University, Faculty of Medicine, Department of Cardiology, Ankara, Turkey.

Bachmann's bundle is a common site of possible epicardial connection in addition to coronary sinus, Marshall ligament and septopulmonary bundle. Hereby, we presented the image of epicardial ablation for recurrent perimitral macroreentry after endocardial ablation. Endocardial mapping revealed discontinuous activation pattern. Read More

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The Diagnostic Yield of Routine Electrocardiography in Hypertension and Implications for Care in a Southwestern Nigerian Practice.

Int J Gen Med 2021 20;14:1421-1427. Epub 2021 Apr 20.

Department of Internal Medicine, University of Medical Sciences, Ondo, Ondo State, Nigeria.

Background: Nigeria, like other developing nations, has an increasing burden of hypertension. Electrocardiography is an integral part of the diagnostic work-up for the newly diagnosed hypertensive subjects. The aim of this study was to determine the diagnostic yield of electrocardiography in hypertensive patients of a southwestern Nigerian hospital. Read More

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Significant abnormal glycemic variability increased the risk for arrhythmias in elderly type 2 diabetic patients.

BMC Endocr Disord 2021 Apr 27;21(1):83. Epub 2021 Apr 27.

Department of General Medicine, Qilu Hospital of Shandong University, No.107, Wen Hua Xi Road, Jinan, Shandong, China.

Background: Little is known about whether the influence of glycemic variability on arrhythmia is related to age in type 2 diabetes mellitus (T2DM). Therefore, we aimed to compare the association between glycemic variability and arrhythmia in middle-aged and elderly T2DM patients.

Methods: A total of 107 patients were divided into two groups: elderly diabetes mellitus group (EDM, n = 73) and middle-aged diabetes mellitus group (MDM, n = 34). Read More

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Varying physiologic ventricular resynchronization with changes in atrial rhythm in a patient with a right-sided accessory pathway and right bundle branch block.

J Electrocardiol 2021 Apr 21;66:122-124. Epub 2021 Apr 21.

Department of Cardiac Pacing and Electrophysiology, IHU Liryc, Electrophysiology and Heart Modeling Institute, Univ. Bordeaux, Bordeaux University Hospital (CHU), 33600 Pessac- Bordeaux, France.

We describe varying physiologic ventricular resynchronization owing to differences in atrial rhythm in a patient with the right-sided accessory pathway and pre-existing right bundle branch block. Read More

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Cardiac arrhythmias in patients with COVID-19: Lessons from 2300 telemetric monitoring days on the intensive care unit.

J Electrocardiol 2021 Apr 16;66:102-107. Epub 2021 Apr 16.

DZHK (German Center of Cardiovascular Research), partner site Berlin, Germany; Department of Internal Medicine and Cardiology, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin, Germany.

Background: Patients with COVID-19 seem to be prone to the development of arrhythmias. The objective of this trial was to determine the characteristics, clinical significance and therapeutic consequences of these arrhythmias in COVID-19 patients requiring intensive care unit (ICU) treatment.

Methods And Results: A total of 113 consecutive patients (mean age 64. Read More

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Severe Myocardial Infarction Caused by Excessive Cannabis Consumption.

Cureus 2021 Apr 23;13(4):e14643. Epub 2021 Apr 23.

Cardiology, Mohammed I University/Mohammed VI University Hospital/Epidemiological Laboratory of Clinical Research and Public Health, Oujda, MAR.

The cardiovascular effects of cannabis are not well known. Cannabis use has been shown to cause arrhythmia, including ventricular tachycardia, sudden death, and increase in the risk of myocardial infarction (MI). We report a 62-year-old woman with chronic cannabis abuse inducing MI complicated by cardiogenic shock, chronic dilated cardiomyopathy, and atrial fibrillation. Read More

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Extreme Weight Loss and Psychosis as Presenting Signs of Thyrotoxicosis.

Cureus 2021 Mar 22;13(3):e14045. Epub 2021 Mar 22.

Internal Medicine, Unity Health, Searcy, USA.

Thyroid storm is an acute, life-threatening syndrome due to an exacerbation of thyrotoxicosis, which is when you have an excess of thyroid hormone in the body. Thyroid storm can be precipitated by infections, surgery, or untreated thyrotoxicosis. Multisystem involvement is often seen. Read More

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A Computational Study of the Effects of Tachycardia-Induced Remodeling on Calcium Wave Propagation in Rabbit Atrial Myocytes.

Front Physiol 2021 9;12:651428. Epub 2021 Apr 9.

Simula Research Laboratory, Computational Physiology Department, Lysaker, Norway.

In atrial cardiomyocytes without a well-developed T-tubule system, calcium diffuses from the periphery toward the center creating a centripetal wave pattern. During atrial fibrillation, rapid activation of atrial myocytes induces complex remodeling in diffusion properties that result in failure of calcium to propagate in a fully regenerative manner toward the center; a phenomenon termed "calcium silencing." This has been observed in rabbit atrial myocytes after exposure to prolonged rapid pacing. Read More

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Mutations Are Associated With Benign Epilepsy of Childhood With Centrotemporal Spikes With or Without Arrhythmia.

Front Neurosci 2021 7;15:629610. Epub 2021 Apr 7.

Institute of Neuroscience and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China.

encodes ryanodine receptor 2 protein (RYR-2) that is mainly located on endoplasmic reticulum membrane and regulates intracellular calcium concentration. The RYR-2 protein is ubiquitously distributed and highly expressed in the heart and brain. Previous studies have identified the mutations in the etiology of arrhythmogenic right ventricular dysplasia 2 and catecholaminergic polymorphic ventricular tachycardia. Read More

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Supraventricular arrhythmia in mitral valve prolapse : Predictive value of P-wave dispersion and atrial conduction time.

Herz 2021 Apr 21. Epub 2021 Apr 21.

Emergency Medicine Department, SBU Kanuni Sultan Suleyman Training and Research Hospita, Istanbul, Turkey.

Background: The incidence of supraventricular arrhythmia (SVA) is high in patients with mitral valve prolapse (MVP). The purpose of our study was to determine the role of parameters showing atrial conduction heterogeneity such as P‑wave dispersion (PWD) and atrial electromechanical delay (AEMD) in predicting the development of SVA in MVP patients.

Methods: A total of 76 patients with MVP (56 female, 20 male) were included in the study. Read More

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Highlights and comments on EHRA/HRS/APHRS/LAHRS expert consensus on risk assessment in cardiac arrhythmias: use the right tool for the right outcome.

J Interv Card Electrophysiol 2021 Apr 19. Epub 2021 Apr 19.

Department of Electrocardiology, National Institute of Cardiology "Ignacio Chavez", Mexico City, Mexico.

Patients with heart disease, or at high risk of developing a cardiac condition, usually undergo risk assessment by primary care physicians, internal medicine doctors, or cardiologists. There are several methods that can be used for this risk assessment, and their applicability differs with respect to availability, complexity, and usefulness in different geographic populations. This document focuses on some of the many relevant clinical topics recently presented in the "Expert Consensus on Risk Assessment in Cardiac Arrhythmias: Use the Right Tool for the Right Outcome," which include statements based on the best available evidence. Read More

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Idarucizumab for dabigatran reversal in cardiac tamponade complicating percutaneous intervention in ST elevation myocardial infarction.

Postepy Kardiol Interwencyjnej 2021 Mar 27;17(1):129-130. Epub 2021 Mar 27.

3 Department of Cardiology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, Silesian Center for Heart Disease in Zabrze, Poland.

An 83-year-old man with a history of permanent atrial fibrillation (AF) anticoagulated by dabigatran 150 b.i.d. Read More

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Genetic Complexity of Sinoatrial Node Dysfunction.

Front Genet 2021 1;12:654925. Epub 2021 Apr 1.

Frick Center for Heart Failure and Arrhythmia Research, The Ohio State University Wexner Medical Center, Columbus, OH, United States.

The pacemaker cells of the cardiac sinoatrial node (SAN) are essential for normal cardiac automaticity. Dysfunction in cardiac pacemaking results in human sinoatrial node dysfunction (SND). SND more generally occurs in the elderly population and is associated with impaired pacemaker function causing abnormal heart rhythm. Read More

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ECG-Based Indices to Characterize Persistent Atrial Fibrillation Before and During Stepwise Catheter Ablation.

Front Physiol 2021 30;12:654053. Epub 2021 Mar 30.

Service of Cardiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.

Consistently successful patient outcomes following catheter ablation (CA) for treatment of persistent atrial fibrillation (pers-AF) remain elusive. We propose an electrocardiogram (ECG) analysis designed to (1) refine selection of patients most likely to benefit from ablation, and (2) examine the temporal evolution of AF organization indices that could act as clinical indicators of ongoing ablation effectiveness and completeness. Twelve-lead ECG was continuously recorded in 40 patients (61 ± 8 years) during stepwise CA (step-CA) procedures for treatment of pers-AF (sustained duration 19 ± 11 months). Read More

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Cardioneuroablation for cardioinhibitory vasovagal syncope.

J Cardiovasc Electrophysiol 2021 Apr 14. Epub 2021 Apr 14.

Division of Cardiology, Medical University of South Carolina, Charleston, South Carolina, USA.

Background: Cardioneuroablation (CNA) is an emerging technique being used to treat patients with cardioinhibitory vasovagal syncope (VVS). We describe a case of CNA in targeting atrial ganglionated plexi (GP) based upon anatomical landmarks and fractionated electrogram (EGM) localization in a patient with cardioinhibitory syncope.

Case Presentation: A 20-year-old healthy female presented with malignant VVS and symptomatic sinus pauses, with the longest detected at 10 s. Read More

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A prospective evaluation of the impact of individual RF applications for slow pathway ablation for AVNRT: Markers of acute success.

J Cardiovasc Electrophysiol 2021 Apr 14. Epub 2021 Apr 14.

Department of Cardiology, The Baker Heart & Diabetes Institute, Melbourne, Australia.

Background: Catheter ablation is highly effective for atrioventricular nodal re-entrant tachycardia (AVNRT). Generally junctional rhythm (JR) is an accepted requirement for successful ablation however there is a lack of detailed prospective studies to determine the characteristics of JR and the impact on slow pathway conduction.

Methods: Multicentre prospective observational study evaluating the impact of individual radiofrequency (RF) applications in typical AVNRT (slow/fast). Read More

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