43,719 results match your criteria ventricular fibrillation


Imaging assessment of the right atrium: anatomy and function.

Eur Heart J Cardiovasc Imaging 2022 Jan 25. Epub 2022 Jan 25.

Saint Antoine and Tenon Hospital, AP-HP, Pr Ariel Cohen, Sorbonne Université, INSERM, Unité de recherche sur les maladies cardiovasculaires, le métabolisme et la nutrition, ICAN, Paris F-75013, France.

The right atrium (RA) is the cardiac chamber that has been least well studied. Due to recent advances in interventional cardiology, the need for greater understanding of the RA anatomy and physiology has garnered significant attention. In this article, we review how a comprehensive assessment of RA dimensions and function using either echocardiography, cardiac computed tomography, and magnetic resonance imaging may be used as a first step towards a better understanding of RA pathophysiology. Read More

View Article and Full-Text PDF
January 2022

Successful Coil Embolization Using Percutaneous Cardiopulmonary Support in a Patient with Refractory Out-of-hospital Cardiac Arrest Caused by Aneurysmal Subarachnoid Hemorrhage.

NMC Case Rep J 2021 9;8(1):393-398. Epub 2021 Jul 9.

Department of Emergency and Critical Care Center, Sapporo City General Hospital, Sapporo, Hokkaido, Japan.

In recent years, extracorporeal cardiopulmonary resuscitation (ECPR) has been reported to be an effective alternative to conventional CPR for treating patients with reversible causes of cardiac arrest. Nevertheless, the definite indication for ECPR and also surgical interventions during ECPR treatment have not been established, especially in patients with out-of-hospital cardiac arrest (OHCA) caused by subarachnoid hemorrhage (SAH). We treated a comatose 50-year-old woman with refractory cardiac arrest due to aneurysmal SAH-induced takotsubo cardiomyopathy (TCM). Read More

View Article and Full-Text PDF

Cardiac oxidative stress: a potential tool for risk stratification in cardiac sarcoidosis.

Heart 2022 Jan 25. Epub 2022 Jan 25.

School of Medicine, The University of Adelaide, Adelaide, South Australia, Australia.

View Article and Full-Text PDF
January 2022

Identification of heart failure with preserved ejection fraction helps risk stratification for hypertrophic cardiomyopathy.

BMC Med 2022 Jan 26;20(1):21. Epub 2022 Jan 26.

State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 167, Beilishi Road, Xicheng District, 100037, Beijing, People's Republic of China.

Background: Heart failure with preserved ejection fraction (HFpEF) is the dominant form of heart failure (HF). We here aimed to investigate the characteristics and prognosis of HFpEF in patients with hypertrophic cardiomyopathy (HCM).

Methods: This was a prospective cohort study and patients with HCM with available NT-proBNP results were enrolled. Read More

View Article and Full-Text PDF
January 2022

Echocardiography-guided Cardiac Implantable Electronic Device Implantation to Reduce Device Related Tricuspid Regurgitation: A Prospective Controlled Study.

Isr Med Assoc J 2022 Jan;24(1):25-32

Electrophysiology and Pacing Unit, Department of Cardiology, Assuta Ashdod University Medical Center Ben Gurion University of the Negev, Beer Sheva, Israel.

Background: Endocardial leads of permanent pacemakers (PPM) and implantable defibrillators (ICD) across the tricuspid valve (TV) can lead to tricuspid regurgitation (TR) or can worsen existing TR with subsequent severe morbidity and mortality.

Objectives: To evaluate prospectively the efficacy of intraprocedural 2-dimentional-transthoracic echocardiography (2DTTE) in reducing/preventing lead-associated TR.

Methods: We conducted a prospective randomized controlled study comparing echocardiographic results in patients undergoing de-novo PPM/ICD implantation with intraprocedural echo-guided right ventricular (RV) lead placement (Group 1, n=56) versus non-echo guided implantation (Group 2, n=55). Read More

View Article and Full-Text PDF
January 2022

Left ventricular mass index-to-QRS-voltage ratio predicts outcomes in heart failure with preserved ejection fraction.

ESC Heart Fail 2022 Jan 25. Epub 2022 Jan 25.

Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.

Aims: Increased left ventricular mass index (LVMI) disproportionate to electrocardiographic QRS voltage has been reported to be associated with cardiac fibrosis and amyloid infiltration to myocardium. This study aimed to assess whether the LVMI-to-QRS-voltage ratio predicts clinical outcomes in heart failure with preserved ejection fraction (HFpEF).

Methods And Results: The Japanese Heart Failure Syndrome with Preserved Ejection Fraction (JASPER) registry is a nationwide, observational, and prospective registration of Japanese patients hospitalized with HFpEF (EF ≥ 50%). Read More

View Article and Full-Text PDF
January 2022

Survival and adverse events in patients with atrial fibrillation at left ventricular assist device implantation: an analysis of the European Registry for Patients with Mechanical Circulatory Support.

Eur J Cardiothorac Surg 2022 Jan 24. Epub 2022 Jan 24.

Department of Cardiology, Erasmus University Medical Center, Rotterdam, Netherlands.

Objectives: Atrial fibrillation (AF) is a risk factor for mortality and cerebrovascular accidents (CVAs) and is common in patients with heart failure. This study evaluated survival and adverse events in patients with a left ventricular assist device (LVAD) and a history of AF in the European Registry for Patients with Mechanical Circulatory Support.

Methods: Patients with a continuous-flow LVAD, AF or sinus rhythm (SR) and a follow-up were included. Read More

View Article and Full-Text PDF
January 2022

Electrocardiographic features and need for pacemaker in cardiac amyloidosis: Analysis of 58 cases.

Med Clin (Barc) 2022 Jan 21. Epub 2022 Jan 21.

Servicio de Cardiología, Hospital Universitario Reina Sofia, Córdoba, España; Instituto Maimónides de Investigación Biomédica de Córdoba, Universidad de Córdoba, Córdoba, España.

Aim: Amyloidosis is a disease in which amyloid fibrils can be deposited in different cardiac structures, and several electrocardiographic abnormalities can be produced by this phenomenon. The objective of this study was to describe the most common basal electrocardiographic alterations in patients diagnosed with cardiac amyloidosis (CA) and to determine if these abnormalities have an impact on the need of pacemaker.

Methods: This retrospective study included patients who had an established diagnosis of CA [light-chain cardiac amyloidosis (LA-CA) or transthyretin cardiac amyloidosis (TTR-CA)] between January 2013 and March 2021. Read More

View Article and Full-Text PDF
January 2022

Prognostic value of beta-blocker doses in patients with ventricular tachyarrhythmias.

Heart Vessels 2022 Jan 24. Epub 2022 Jan 24.

Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, Faculty of Medicine Mannheim, University Medical Centre Mannheim, Heidelberg University, Mannheim, Germany.

The study investigates the prognostic significance of beta-blocker (BB) dose in patients with ventricular tachyarrhythmias. Limited data regarding the prognostic impact of BB dose in ventricular tachyarrhythmias is available. A large retrospective registry was used including consecutive patients on BB treatment with episodes of ventricular tachycardia (VT) or fibrillation (VF) from 2002 to 2015. Read More

View Article and Full-Text PDF
January 2022

Nifekalant versus Amiodarone for Out-Of-Hospital Cardiac Arrest with Refractory Shockable Rhythms; a Post Hoc Analysis.

Arch Acad Emerg Med 2022 1;10(1):e6. Epub 2022 Jan 1.

Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-shimmachi, Suita, Osaka 564-8565, Japan.

Introduction: It is still unclear that which anti-arrhythmics are adequate for treating refractory dysrhythmia. This study aimed to compare amiodarone and nifekalant in management of out-of-hospital cardiac arrest cases with refractory shockable rhythm.

Methods: This was a post hoc analysis of cases registered in a nationwide, multicentre, prospective registry that includes 288 critical care medical centres in Japan. Read More

View Article and Full-Text PDF
January 2022

The Effects of Fish Oil on Cardiovascular Diseases: Systematical Evaluation and Recent Advance.

Front Cardiovasc Med 2021 5;8:802306. Epub 2022 Jan 5.

Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University (CQMU), Chongqing, China.

Fish oil is rich in unsaturated fatty acids, i.e., eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), both of which are widely distributed in the body such as heart and brain. Read More

View Article and Full-Text PDF
January 2022

Demographic, clinical, electrocardiographic and echocardiographic characteristics of patients hospitalized with COVID-19 and cardiac disease at a tertiary hospital, South Africa.

Cardiovasc Diagn Ther 2021 Dec;11(6):1228-1240

Division of Pulmonology, Department of Internal Medicine, Chris Hani Baragwanath Academic Hospital, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.

Background: Coronavirus associated disease 2019 (COVID-19) is associated with higher morbidity and mortality in patients with cardiovascular disease. There is a paucity of data regarding COVID-19 and cardiac disease from Africa. We aimed to describe the demographic, clinical, electrocardiographic and echocardiographic characteristics of patients with COVID-19 and cardiac disease at a tertiary hospital in South Africa. Read More

View Article and Full-Text PDF
December 2021

Role of Purkinje-Muscle Junction in Early Ventricular Fibrillation in a Porcine Model: Beyond the Trigger Concept.

Pacing Clin Electrophysiol 2022 Jan 24. Epub 2022 Jan 24.

The Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Toronto, Canada.

Background: The role of the Purkinje network in triggering ventricular fibrillation (VF) has been studied, however, its involvement after onset and in early maintenance of VF is controversial.

Aim: We studied the role of the Purkinje-muscle junctions (PMJ) on epicardial-endocardial activation gradients during early VF.

Methods: In a healthy, porcine, beating-heart Langendorff model [control, n = 5; ablation, n = 5], simultaneous epicardial-endocardial dominant frequent mapping was used (224 unipolar electrograms) to calculate activation rate gradients during the onset and early phase of VF. Read More

View Article and Full-Text PDF
January 2022

Regional Heterogeneity in Determinants of Atrial Matrix Remodeling and Association with Atrial Fibrillation Vulnerability Post-Myocardial Infarction.

Heart Rhythm 2022 Jan 20. Epub 2022 Jan 20.

Cell Biology & Anatomy, University of South Carolina School of Medicine, Columbia, SC; Columbia VA Health Care System, Columbia, SC. Electronic address:

Background: Left ventricular (LV) remodeling following a myocardial infarction (MI) is associated with new onset atrial fibrillation (AF). LV remodeling post-MI is characterized by regional changes in matrix metalloproteinases (MMPs) and tissue inhibitors of MMPs (TIMPs), causing extracellular matrix (ECM) remodeling.

Objective: This study tested the hypothesis that a shift in regional atrial MMP activity, MMP/TIMP expression, and ECM remodeling occurs post-MI, which cause increased vulnerability to AF. Read More

View Article and Full-Text PDF
January 2022

Hybrid-Pattern Recognition Modeling with Arrhythmia Signal Processing for Ubiquitous Health Management.

Sensors (Basel) 2022 Jan 17;22(2). Epub 2022 Jan 17.

Department and Institute of Health Service Administrations, China Medical University, Taichung 406040, Taiwan.

We established a web-based ubiquitous health management (UHM) system, "ECG4UHM", for processing ECG signals with AI-enabled models to recognize hybrid arrhythmia patterns, including atrial premature atrial complex (APC), atrial fibrillation (AFib), ventricular premature complex (VPC), and ventricular tachycardia (VT), versus normal sinus rhythm (NSR). The analytical model coupled machine learning methods, such as multiple layer perceptron (MLP), random forest (RF), support vector machine (SVM), and naive Bayes (NB), to process the hybrid patterns of four arrhythmia symptoms for AI computation. The data pre-processing used Hilbert-Huang transform (HHT) with empirical mode decomposition to calculate ECGs' intrinsic mode functions (IMFs). Read More

View Article and Full-Text PDF
January 2022

Intracoronary ergonovine testing among 505 consecutive Japanese patients with angina-like chest pain and unobstructed coronary artery disease.

Heart Vessels 2022 Jan 21. Epub 2022 Jan 21.

Department of Cardiology, Yawatahama City General Hospital, Yawatahama, Japan.

Intracoronary ergonovine (ER) testing is useful for the detection of epicardial spasm (ES) and coronary microvascular spasm (CMS). We retrospectively analyzed the incidence of ES and CMS in consecutive Japanese patients with unobstructed coronary artery disease. From January 1991 to February 2019, we performed intracoronary ER testing of 1196 patients. Read More

View Article and Full-Text PDF
January 2022

Prospective arrhythmia surveillance after a COVID-19 diagnosis.

Open Heart 2022 01;9(1)

Department of Medicine, University of California San Francisco, San Francisco, California, USA

Background: Cardiac arrhythmias have been observed among patients hospitalised with acute COVID-19 infection, and palpitations remain a common symptom among the much larger outpatient population of COVID-19 survivors in the convalescent stage of the disease.

Objective: To determine arrhythmia prevalence among outpatients after a COVID-19 diagnosis.

Methods: Adults with a positive COVID-19 test and without a history of arrhythmia were prospectively evaluated with 14-day ambulatory electrocardiographic monitoring. Read More

View Article and Full-Text PDF
January 2022

ST-Elevation Myocardial Infarction Outcomes: A United States Nationwide Emergency Departments Cohort Study.

J Emerg Med 2022 Jan 18. Epub 2022 Jan 18.

Division of Cardiology, Detroit Medical Center, Wayne State University, Detroit, Michigan.

Background: Literature regarding trends in incidence and mortality of ST-elevation myocardial infarction (STEMI) in emergency departments (EDs) is limited.

Objective: To study the trends of incidence and mortality of STEMI.

Methods: Using the National Emergency Department Sample database in the United States, we identified all ED encounters for patients presenting with STEMI using International Classification of Diseases codes. Read More

View Article and Full-Text PDF
January 2022

[Evaluation of the effectiveness of the chronic heart failure therapy using the device cardiac contractility modulation according to the new non-invasive method of the myocardium work analysis].

Kardiologiia 2021 Dec 31;61(12):31-40. Epub 2021 Dec 31.

National Medical Research Center of Cardiology, Moscow, Russia.

Aim      To analyze echocardiographic parameters that reflect left ventricular (LV) myocardial contractility, using a novel method for evaluation of myocardial performance in patients with chronic heart failure (CHF) and atrial fibrillation (AF) during heart contractility modulation (HCM).Material and methods  Standard echocardiographic parameters and indexes of myocardial strain and work were analyzed for 66 patients (52 men and 14 women; median age, 60 [54; 66] years). 36 patients had paroxysmal AF and 30 patients had permanent AF. Read More

View Article and Full-Text PDF
December 2021

Effects of Acupuncture on Cardiac Remodeling in Patients with Persistent Atrial Fibrillation: Results of a Randomized, Placebo-Controlled, Patient- and Assessor-Blinded Pilot Trial and Its Implications for Future Research.

Medicina (Kaunas) 2021 Dec 27;58(1). Epub 2021 Dec 27.

Division of Cardiology, Department of Internal Medicine, Kyung Hee University Hospital, Kyung Hee University, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.

In this study, we attempted to determine the effects of acupuncture on cardiac remodeling and atrial fibrillation (AF) recurrence rates in patients with AF after electrical cardioversion (EC). We randomly assigned 44 patients with persistent AF to an acupuncture group or a sham acupuncture group. An electroacupuncture treatment session was administered once weekly for 12 weeks at four acupuncture points (left PC5, PC6, ST36, and ST37). Read More

View Article and Full-Text PDF
December 2021

Atrial Functional Tricuspid Regurgitation as a Distinct Pathophysiological and Clinical Entity: No Idiopathic Tricuspid Regurgitation Anymore.

J Clin Med 2022 Jan 13;11(2). Epub 2022 Jan 13.

Department of Cardiology, Istituto Auxologico Italiano, IRCCS, 20145 Milan, Italy.

Functional tricuspid regurgitation (FTR) is a strong and independent predictor of patient morbidity and mortality if left untreated. The development of transcatheter procedures to either repair or replace the tricuspid valve (TV) has fueled the interest in the pathophysiology, severity assessment, and clinical consequences of FTR. FTR has been considered to be secondary to tricuspid annulus (TA) dilation and leaflet tethering, associated to right ventricular (RV) dilation and/or dysfunction (the "classical", ventricular form of FTR, V-FTR) for a long time. Read More

View Article and Full-Text PDF
January 2022

The Thromboembolic Predictability of CHADS-VASc Scores Using Different Echocardiographic Criteria for Congestive Heart Failure in Korean Patients with Nonvalvular Atrial Fibrillation.

J Clin Med 2022 Jan 7;11(2). Epub 2022 Jan 7.

Division of Cardiology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon 21565, Korea.

The association between congestive heart failure (CHF) of the CHADS-VASc scores and thromboembolic (TE) events in patients with atrial fibrillation (AF) is a topic of debate due to conflicting results. As the importance of diastolic impairment in the occurrence of TE events is increasingly recognized, it is crucial to evaluate the predictive power of CHADS-VASc scores with C criterion integrating diastolic parameters. We analyzed 4200 Korean nonvalvular AF patients (71 years of age, 59% men) to compare multiple echocardiographic definitions of CHF. Read More

View Article and Full-Text PDF
January 2022

Impact of tolvaptan on improvement of tricuspid regurgitation and right ventricular dimension in patients with right-sided heart failure.

Heart Vessels 2022 Jan 20. Epub 2022 Jan 20.

Department of Cardiology, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa, 259-1193, Japan.

Managing right-sided chronic heart failure (CHF) due to tricuspid regurgitation (TR) remains a clinical challenge. Tolvaptan (TLV), a vasopressin V2 receptor inhibitor, is effective in controlling decompensated HF. However, its effects on right-sided CHF caused by TR are unclear. Read More

View Article and Full-Text PDF
January 2022

Feasibility of using real-world data in the evaluation of cardiac ablation catheters: a test-case of the National Evaluation System for Health Technology Coordinating Center.

BMJ Surg Interv Health Technol 2021 9;3(1):e000089. Epub 2021 Dec 9.

Mercy Research, Chesterfield, Missouri, USA.

Objectives: To determine the feasibility of using real-world data to assess the safety and effectiveness of two cardiac ablation catheters for the treatment of persistent atrial fibrillation and ischaemic ventricular tachycardia.

Design: Retrospective cohort.

Setting: Three health systems in the USA. Read More

View Article and Full-Text PDF
December 2021

Ventricular fibrillation and sudden cardiac arrest in apical hypertrophic cardiomyopathy: Two case reports.

World J Clin Cases 2021 Dec;9(35):11102-11107

Department ofCardiology, Gachon University Gil Medical Center, Incheon 21556, South Korea.

Background: Apical hypertrophic cardiomyopathy (HCM) is considered to have a benign prognosis in terms of cardiovascular mortality. This serial case report aimed to raise awareness of ventricular fibrillation (VF) and sudden cardiac death (SCD) in apical HCM.

Case Summary: Here we describe two rare cases of apical HCM that presented with documented VF and sudden cardiac collapse. Read More

View Article and Full-Text PDF
December 2021

Arrhythmia Patterns in Patients on Ibrutinib.

Front Cardiovasc Med 2021 3;8:792310. Epub 2022 Jan 3.

Department of Medicine, Division of Cardiology, City of Hope National Cancer Center, Duarte, CA, United States.

Ibrutinib, a Bruton's tyrosine kinase inhibitor (TKI) used primarily in the treatment of hematologic malignancies, has been associated with increased incidence of atrial fibrillation (AF), with limited data on its association with other tachyarrhythmias. There are limited reports that comprehensively analyze atrial and ventricular arrhythmia (VA) burden in patients on ibrutinib. We hypothesized that long-term event monitors could reveal a high burden of atrial and VAs in patients on ibrutinib. Read More

View Article and Full-Text PDF
January 2022

Characterizing a Clinical Trial - Representative, Real-World Population with Heart Failure with Reduced Ejection Fraction.

Clin Epidemiol 2022 13;14:39-49. Epub 2022 Jan 13.

Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.

Purpose: Given known differences between real-world and clinical trial populations, we characterized demographics, clinical characteristics, and outcomes using real-world (RW) data for patients with heart failure with reduced ejection fraction (HFrEF), including those similar to subjects enrolled in an HFrEF clinical trial to better understand patient populations that could benefit from novel therapies.

Patients And Methods: Using Vanderbilt University Medical Center electronic health records (2006-2019), two RW cohorts of HFrEF patients were identified. The "Clinical Cohort" was based on a validated HFrEF algorithm and left ventricular ejection fraction (LVEF) ≤40%. Read More

View Article and Full-Text PDF
January 2022

Outcomes Associated With Cardiac Arrest in Patients in the Cardiac Intensive Care Unit With Cardiogenic Shock.

Am J Cardiol 2022 Jan 16. Epub 2022 Jan 16.

Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine; Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota. Electronic address:

Cardiac arrest (CA) is common and has been associated with adverse outcomes in patients with cardiogenic shock (CS). We sought to determine the prevalence, patient characteristics, and outcomes of CA in cardiovascular intensive care unit patients with CS. We queried cardiovascular intensive care unit admissions from 2007 to 2018 with an admission diagnosis of CS and compared patients with and without CA. Read More

View Article and Full-Text PDF
January 2022

[Efficacy and safety of non-vitamin K antagonist oral anticoagulants in patients with atrial fibrillation and hypertrophic cardiomyopathy].

Zhonghua Xin Xue Guan Bing Za Zhi 2022 Jan;50(1):62-67

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

To evaluate the efficacy and safety of non-vitamin K antagonist oral anticoagulants (NOAC) in patients with atrial fibrillation (AF) and hypertrophic cardiomyopathy (HCM). This study was a prospective cohort study. The data of this study were based on the Chinese Atrial Fibrillation Registry (CAFR) Study, which was a prospective, multicenter registry study. Read More

View Article and Full-Text PDF
January 2022

Ertugliflozin to Reduce Arrhythmic burden in ICD/CRT patients (ERASe-Trial) - a phase III Study.

Am Heart J 2022 Jan 16. Epub 2022 Jan 16.

Medical University of Graz, Department of Internal Medicine, Division of Cardiology, 8010 Graz, Austria.

Background And Aim: Sodium glucose cotransporter 2 (SGLT2) have proven profound positive effects in heart failure with reduced ejection fraction (HFrEF). These effects are independent from the presence of diabetes. Metabolic effects, anti-inflammatory, and anti-fibrotic properties are discussed as underlying mechanisms. Read More

View Article and Full-Text PDF
January 2022