Unnamed: 0 int64 0 2.34M | titles stringlengths 5 21.5M | abst stringlengths 1 21.5M |
|---|---|---|
10,700 | QT interval, general mortality and the role of echocardiographic parameters of left ventricular hypertrophy: Results from the prospective, population-based CARLA study. | There is convincing evidence of an association between the QT interval on electrocardiograms and general mortality. However, results are inconclusive regarding the extent to which this association depends on ventricular mass and size.</AbstractText>Data were obtained from the prospective, population-based CARLA study, ... |
10,701 | Transcutaneous carbon dioxide monitoring to avoid hypercapnia during complex catheter ablations: a feasibility study. | The aim of this study was to determine if transcutaneous CO(2) monitoring (TCO(2)) is feasible to avoid hypercapnia during complex catheter ablation. Cumulative analgesic and anxiolytic effects during complex catheter ablation can rarely provoke hypoventilation and respiratory complications. End tidal CO(2) monitors ha... |
10,702 | Atrial fibrillation in amyloidotic cardiomyopathy: prevalence, incidence, risk factors and prognostic role. | Although atrial fibrillation (AF) is a known complication of amyloidotic cardiomyopathy (AC), a precise pathophysiological and prognostic characterization is not available. We therefore aimed to assess prevalence, incidence, risk factors and prognostic significance of AF in light-chain (AL), hereditary transthyretin-re... |
10,703 | Eligibility for the Subcutaneous Implantable Cardioverter-Defibrillator in Patients With Hypertrophic Cardiomyopathy. | High-risk hypertrophic cardiomyopathy (HCM) patients benefit from the implantable cardioverter defibrillator (ICD). The subcutaneous ICD (S-ICD) may provide comparable protection while avoiding the shortcomings of transvenous (TV) leads. We assessed S-ICD eligibility according to surface ECG screening test in a cohort ... |
10,704 | Right ventricular cardiomyopathy meeting the arrhythmogenic right ventricular dysplasia revised criteria? Don't forget sarcoidosis! | A 53-year-old woman was referred for ventricular fibrillation with resuscitation. A CT-angiography showed signs of a right ventricular enlargement without obvious cause. A cardiac MRI demonstrated a dilated and hypokinetic right ventricle with extensive late gadolinium enhancement. Arrhythmogenic right ventricular dysp... |
10,705 | Intrathoracic pressure swings induced by simulated obstructive sleep apnoea promote arrhythmias in paroxysmal atrial fibrillation. | There is preliminary evidence for a link between obstructive sleep apnoea (OSA) and arrhythmias such as paroxysmal atrial fibrillation (PAF) and sudden cardiac death but underlying mechanisms remain largely unknown.</AbstractText>In this interventional crossover study, we evaluated whether intrathoracic pressure change... |
10,706 | Thyrotoxicosis: an under-recognised aetiology. | A 53-year-old woman presented for evaluation of dizziness, shortness of breath and chest pain. She was found to be in atrial fibrillation with rapid ventricular response that was determined to be caused by iodine-induced thyrotoxicosis (from a CT scan with intravenous contrast 2 months prior to presentation). Jo... |
10,707 | Pharmacotherapy for inherited arrhythmia syndromes: mechanistic basis, clinical trial evidence and practical application. | In the absence of structural heart disease, sudden cardiac death is frequently caused by inherited arrhythmia syndromes, such as long QT syndrome, Brugada syndrome and catecholaminergic polymorphic ventricular tachycardia. Managing these conditions often requires a combination of lifestyle modification, pharmacotherapy... |
10,708 | Influence of the previous use of β-blockers on the early clinical course of acute coronary syndromes. | Recent studies have recently questioned the current role of β-blockers in myocardial infarction. Our purpose is to analyze the influence of the previous use of β-blockers on the early course of patients admitted because of acute coronary syndrome (ACS). We analyzed the data of 37.359 patients included in th... |
10,709 | Low Circulating Levels of Growth Differentiation Factor-15 Before Coronary Artery Bypass Surgery May Predict Postoperative Atrial Fibrillation. | To assess the role of growth differentiation factor-15 (GDF-15) as a potential new predictor of postoperative atrial fibrillation (POAF) after off-pump (OFP) and on-pump (ONP) coronary artery bypass graft (CABG) surgery.</AbstractText>Prospective, single-center, observational study.</AbstractText>University teaching ho... |
10,710 | Utility of T-wave alternans during night time as a predictor for ventricular fibrillation in patients with Brugada syndrome. | The prognostic value of T-wave alternans (TWA) during the night time in patients with Brugada syndrome (Br-S) remains unknown. We assessed TWA for risk stratification using 24-h multichannel Holter electrocardiogram (24-M-ECG) in Br-S. We enrolled 129 patients with Br-S [grouped according to histories of ventricular fi... |
10,711 | Primary hypoparathyroidism presenting with heart failure and ventricular fibrillation. | A 24-year-old female presented with sudden heart failure and ventricular fibrillation. A complete work-up suggested the existence of primary hypoparathyroidism in an otherwise previously healthy young woman. Left ventricle enlargement was detected by echocardiography with an ejection fraction of 30%. Electrolyte disord... |
10,712 | Increased intraventricular pressures are as harmful as the electrophysiological substrate of heart failure in favoring sustained reentry in the swine heart. | Heart failure (HF) electrophysiological remodeling (HF-ER) often includes the effect of chronically increased intraventricular pressures (IVPs) and promotes ventricular tachycardia/ventricular fibrillation (VT/VF). In addition, acutely increased IVPs have been associated with a higher rate of VT/VF episodes in chronic ... |
10,713 | Correction. | In the article by Ristagno et al, “Amplitude Spectrum Area to Guide Defibrillation: A Validation on 1617 Patients With Ventricular Fibrillation,” which was published in the February 3, 2015 issue of the journal (Circulation. 2015;131:478–487. DOI: 10.1161/CIRCULATION AHA.114.010989), the authors wi... |
10,714 | Acute Renal Injury Induced by Hypersensitivity to Tolvaptan in an Elderly Patient with Congestive Heart Failure. | Tolvaptan (TLV) is a new vasopressin type 2 receptor antagonist effective in patients with heart failure (HF). We herein describe the case of an 84-year-old woman who developed acute renal injury induced by hypersensitivity to TLV. The patient had received an implanted pacemaker and was diagnosed with exacerbation of c... |
10,715 | Frequency characteristics and associations with the defibrillation threshold of ventricular fibrillation in patients with implantable cardioverter defibrillators. | The dominant frequency (DF) in frequency analyses is considered to represent the objective cycle length and complexity of activation under conditions of ventricular fibrillation (VF). However, knowledge regarding the mechanisms determining the DF in human VF is limited. We studied the characteristics of the DF of human... |
10,716 | Experimental Study of the Effects of EIPA, Losartan, and BQ-123 on Electrophysiological Changes Induced by Myocardial Stretch. | Mechanical response to myocardial stretch has been explained by various mechanisms, which include Na(+)/H(+) exchanger activation by autocrine-paracrine system activity. Drug-induced changes were analyzed to investigate the role of these mechanisms in the electrophysiological responses to acute myocardial stretch.</Abs... |
10,717 | Behavioral influences on cardiac arrhythmias. | Stress can trigger both ventricular and atrial arrhythmias, as evidenced by epidemiological, clinical, and laboratory studies, through its impact on autonomic activity. Chronic stress also increases vulnerability to arrhythmias. Novel therapies aimed at decreasing the psychological and physiological response to stress ... |
10,718 | Low left atrial appendage flow velocity predicts recurrence of atrial fibrillation after catheter ablation of persistent atrial fibrillation. | Recurrence after catheter ablation of persistent atrial fibrillation (AF) remains an unsolved issue. This study aimed to explore the association between the left atrial appendage peak flow velocity (LAAV) and AF recurrence after ablation in persistent AF patients.</AbstractText>Fifty-three consecutive patients who unde... |
10,719 | Full-Body MRI in Patients With an Implantable Cardioverter-Defibrillator: Primary Results of a Randomized Study. | Magnetic resonance imaging (MRI) of patients with conventional implantable cardioverter-defibrillators (ICD) is contraindicated.</AbstractText>This multicenter, randomized trial evaluated safety and efficacy of a novel ICD system specially designed for full-body MRI without restrictions on heart rate or pacing dependen... |
10,720 | Cardiac arrest: the changing incidence of ventricular fibrillation. | There are more than 300,000 out-of-hospital cardiac arrests (OHCA) in the USA annually, which can be grouped into those presenting with tachyarrhythmic (shockable) rhythms and those presenting with non-tachyarrhythmic rhythms. The incidence of tachyarrhythmic rhythms, which include ventricular fibrillation (VF) and pul... |
10,721 | Mitral valve repair for atrial functional mitral regurgitation in patients with chronic atrial fibrillation. | Atrial functional mitral regurgitation (MR) has been recently described in patients with chronic atrial fibrillation (AF). However, the results of surgical mitral valve (MV) repair for this type of MR have not been comprehensively reported. Our study aimed to address this deficiency.</AbstractText>We retrospectively st... |
10,722 | Antiarrhythmic Effect of Either Negative Modulation or Blockade of Small Conductance Ca2+-activated K+ Channels on Ventricular Fibrillation in Guinea Pig Langendorff-perfused Heart. | During recent years, small conductance Ca-activated K (SK) channels have been reported to play a role in cardiac electrophysiology. SK channels seem to be expressed in atria and ventricles, but from a functional perspective, atrial activity is predominant. A general notion seems to be that cardiac SK channels are predo... |
10,723 | Velocity quantification by electrocardiography-gated phase contrast magnetic resonance imaging in patients with cardiac arrhythmia: a simulation study based on real time transesophageal echocardiography data in atrial fibrillation. | To systematically investigate the impact of beat-to-beat variations on electrocardiography (ECG)-gated multibeat flow imaging with phase contrast (PC) magnetic resonance imaging (MRI) based on real time in vivo transesophageal echocardiography (TEE) data in patients with known arrhythmia.</AbstractText>Real-time 2-dime... |
10,724 | Preoperative Echocardiographic Parameters of Diastolic Dysfunction Did Not Provide a Predictive Value for Postoperative Atrial Fibrillation in Lung and Esophageal Cancer Surgery. | To evaluate the predictive value of preoperative transthoracic echocardiography in the development of postoperative atrial fibrillation after non-cardiac thoracic surgery.</AbstractText>This was a retrospective study.</AbstractText>Academic hospital.</AbstractText>A total of 703 adult patients with non-small cell lung ... |
10,725 | Amplitude-spectral area and chest compression release velocity independently predict hospital discharge and good neurological outcome in ventricular fibrillation out-of-hospital cardiac arrest. | In out-of-hospital cardiac arrest (OHCA) with ventricular fibrillation (VF) the frequency-based waveform characteristic, amplitude-spectral area (AMSA) is associated with hospital discharge and good neurological outcome, yet AMSA is also known to increase in response to chest compressions (CC). In addition to rate and ... |
10,726 | Functional (ischemic) mitral regurgitation in acute phase of myocardial infarction: Associated clinical factors and in-hospital outcomes. | Mitral regurgitation (MR) after myocardial infarction (MI) carries adverse prognosis. The objective of this study was to assess the impact of functional MR on adverse in-hospital outcomes in acute MI.</AbstractText>A total of 569 patients with first ever acute MI were divided into three groups: no MR, mild MR (regurgit... |
10,727 | Meta-analysis of the usefulness of Mitraclip in patients with functional mitral regurgitation. | Midterm outcomes for patients presenting with heart failure and functional mitral regurgitation (MR) treated with Mitraclip remain unclear. Pubmed, Medline, and Google Scholar were systematically searched for studies enrolling patients with severe-moderate MR who underwent Mitraclip implantation. All events after at le... |
10,728 | Genotype-dependent differences in age of manifestation and arrhythmia complications in short QT syndrome. | Short QT syndrome (SQTS) is a rare inheritable arrhythmia, associated with atrial and ventricular fibrillations, caused by mutations in six cardiac ion channel genes with high penetrance. However, genotype-specific clinical differences between SQTS patients remain to be elucidated.</AbstractText>We screened five unrela... |
10,729 | Management of ventricular arrhythmias in structural heart disease. | Ventricular arrhythmias (VA) are a source of significant morbidity and mortality in patients with structural heart disease (SHD). The advent of the implantable cardiac defibrillator (ICD) has had a positive effect on mortality, but the associated morbidity remains a significant problem. Modern treatment of VA has advan... |
10,730 | Spatially Discordant Alternans and Arrhythmias in Tachypacing-Induced Cardiac Myopathy in Transgenic LQT1 Rabbits: The Importance of IKs and Ca2+ Cycling. | Remodeling of cardiac repolarizing currents, such as the downregulation of slowly activating K+ channels (IKs), could underlie ventricular fibrillation (VF) in heart failure (HF). We evaluated the role of Iks remodeling in VF susceptibility using a tachypacing HF model of transgenic rabbits with Long QT Type 1 (LQT1) s... |
10,731 | Double Sequential Defibrillation for Refractory Ventricular Fibrillation: A Case Report. | A 40-year-old male struck his chest against a pole during a basketball game and had sudden out-of-hospital cardiac arrest. After bystander cardiopulmonary resuscitation, fire and emergency medical services personnel provided six defibrillation attempts prior to emergency department arrival. A 7th attempt in the emergen... |
10,732 | The relationship between repolarization parameters and serum electrolyte levels in patients with J wave syndromes. | Intravenous administration of magnesium (Mg(2+)) is effective for polymorphic ventricular tachycardia via homogenization of transmural ventricular repolarization. Mg(2+) likely plays some role in the heterogeneity of repolarization in J wave syndromes.</AbstractText>To investigate the relationship between the repolariz... |
10,733 | Incidence and Predictors of New-Onset Atrial Fibrillation in Septic Shock Patients in a Medical ICU: Data from 7-Day Holter ECG Monitoring. | We investigated incidence, risk factors for new-onset atrial fibrillation (NAF), and prognostic impact during septic shock in medical Intensive Care Unit (ICU) patients.</AbstractText>Prospective, observational study in a university hospital. Consecutive patients from 03/2011 to 05/2013 with septic shock were eligible.... |
10,734 | Predictors of long-term outcomes in patients with hypertrophic cardiomyopathy undergoing cardiopulmonary stress testing and echocardiography. | Patients with hypertrophic cardiomyopathy (HCM) have exercise intolerance due to left ventricular outflow tract (LVOT) obstruction, mitral regurgitation, and left ventricular dysfunction. We sought to study predictors of outcomes in HCM patients undergoing cardiopulmonary stress testing (CPT).</AbstractText>We studied ... |
10,735 | Impact of weight reduction on pericardial adipose tissue and cardiac structure in patients with atrial fibrillation. | Obesity and pericardial adipose tissue are independent risk factors for atrial fibrillation (AF) and adverse cardiac structural remodeling. The effect of weight reduction on pericardial adipose tissue and cardiac structure remains unknown.</AbstractText>We prospectively performed cardiac magnetic resonance imaging on 8... |
10,736 | Epicardial phrenic nerve displacement during catheter ablation of atrial and ventricular arrhythmias: procedural experience and outcomes. | Arrhythmia origin in close proximity to the phrenic nerve (PN) can hinder successful catheter ablation. We describe our approach with epicardial PN displacement in such instances.</AbstractText>PN displacement via percutaneous pericardial access was attempted in 13 patients (age 49±16 years, 9 females) with either... |
10,737 | Sudden cardiac death in CKD patients. | The risk of sudden cardiac death (SCD) is high in chronic kidney disease patients, and it increases with the progression of kidney function deterioration. The most common causes of SDC are the following: ventricular tachycardia, ventricular tachyarrhythmia, tachycardia torsade de pointes, sustained ventricular fibrilla... |
10,738 | The unexpected pitter patter: new-onset atrial fibrillation in pregnancy. | Background. Atrial fibrillation is a relatively uncommon but dangerous complication of pregnancy. Emergency physicians must know how to treat both stable and unstable tachycardias in late pregnancy. In this case, a 40-year-old female with a cerclage due to incompetent cervix and previous preterm deliveries presents in ... |
10,739 | Obesity and atrial fibrillation: A comprehensive review of the pathophysiological mechanisms and links. | Obesity is a worldwide health problem with epidemic proportions that has been associated with atrial fibrillation (AF). Even though the underlying pathophysiological mechanisms have not been completely elucidated, several experimental and clinical studies implicate obesity in the initiation and perpetuation of AF. Of n... |
10,740 | Characteristics of Left Atrial Deformation Parameters and Their Prognostic Impact in Patients with Pathological Left Ventricular Hypertrophy: Analysis by Speckle Tracking Echocardiography. | The pathological process of left ventricular (LV) hypertrophy is associated with left atrial (LA) remodeling. This study was aimed to evaluate the prognostic value of LA strain parameters in patients with pathological LV hypertrophy.</AbstractText>This study included 95 patients with hypertensive heart disease (HHD: n ... |
10,741 | Balancing the Risk of Bleeding and Stroke in Patients With Atrial Fibrillation After Percutaneous Coronary Intervention (from the AVIATOR Registry). | Patients with atrial fibrillation (AF) who underwent percutaneous coronary intervention (PCI) are at elevated risk for bleeding and thromboembolic ischemic events. Currently, guidelines on antithrombotic treatment for these patients are based on weak consensus. We describe patterns and determinants of antithrombotic pr... |
10,742 | Simultaneous fat and bone assessment in hospitalized heart failure patients using non-contrast-enhanced computed tomography. | Heart failure (HF) is associated with adverse metabolic influences and provokes fat loss as well as bone and muscle loss at the terminal stages. Pericardial fat is an ectopic fat depot that can potentially affect the myocardium, but the role of pericardial fat in HF is unclear. We sought to characterize pericardial fat... |
10,743 | Cardiac sodium channel blockade after an intentional ingestion of lacosamide, cyclobenzaprine, and levetiracetam: Case report. | Lacosamide treats partial seizures by enhancing slow inactivation of voltage-gated sodium channels. The described cardiac toxicity of lacosamide in the literature to date includes atrioventricular blockade (PR prolongation), atrial flutter, atrial fibrillation, sinus pauses, ventricular tachycardia and a single cardiac... |
10,744 | Ellagic acid improved arrhythmias induced by CaCL2 in the rat stress model. | In ventricular arrhythmias, due to their free radical scavenging action, antioxidant agents are usually used in the treatment of cardiovascular disease. Since stress is considered as risk factor for increased mortality by causing malignant arrhythmias, the study was designed to evaluate the cardioprotective effects of ... |
10,745 | Long-term outcomes after transcatheter aortic valve replacement in high-risk patients with severe aortic stenosis: the U.K. Transcatheter Aortic Valve Implantation Registry. | The U.K. Transcatheter Aortic Valve Implantation Registry reported 30-day and 1-year mortality rates of 7.1% and 21.4%, respectively, for patients who underwent transcatheter aortic valve replacement (TAVR) in the United Kingdom between 2007 and 2009. The study aim was to report long-term outcomes in this same cohort o... |
10,746 | Further evidence for the role of gap junctions in the delayed antiarrhythmic effect of cardiac pacing. | The objective of this study was to provide evidence that gap junctions are involved in the delayed antiarrhythmic effect of cardiac pacing. Twenty-four dogs were paced through the right ventricle (4 × 5 min, rate of 240 beats/min) 24 h prior to a 25 min occlusion of the left anterior descending coronary artery. So... |
10,747 | Ventricular rate during acute atrial fibrillation and outcome of electrical cardioversion: The FinCV Study. | The impact of ventricular rate (VR) on the outcome of electrical cardioversion (ECV) of acute atrial fibrillation (AF) is currently unknown. We aimed to determine the effect of VR during acute AF on the success of ECV, recurrence of AF, and occurrence of post-cardioversion complications in 30 days of follow-up.</Abstra... |
10,748 | Prognostication of post-cardiac arrest coma: early clinical and electroencephalographic predictors of outcome. | To determine the temporal evolution, clinical correlates, and prognostic significance of electroencephalographic (EEG) patterns in post-cardiac arrest comatose patients treated with hypothermia.</AbstractText>Prospective cohort study of consecutive post-anoxic patients receiving hypothermia and continuous EEG monitorin... |
10,749 | Two cases of cardiac sarcoidosis in pregnant women with supraventricular arrhythmia. | We present two cases of cardiac sarcoidosis whose first presentation was in pregnancy. All findings confirmed the diagnosis of sarcoidosis with cardiac involvement in both patients. The first patient, a 37-year-old, presented with dizziness and atrial fibrillation at 16 weeks' gestation. Echocardiography revealed thick... |
10,750 | [The Wearable Cardioverter-Defibrillator (WCD)]. | While the implantable cardioverter-defibrillator (ICD) has been proven to be the best choice for patients with long-term risk for sudden cardiac arrest/sudden cardiac death (SCA/SCD), the question is how to manage patients with only temporary risk, e.g., during the guidelines-recommended waiting period until the decisi... |
10,751 | Neuromuscular comorbidity, heart failure, and atrial fibrillation as prognostic factors in left ventricular hypertrabeculation/noncompaction.<Pagination><StartPage>906</StartPage><EndPage>911</EndPage><MedlinePgn>906-11</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1007/s00059-015-4310-7</ELocation... | A rat model of electrically-induced ventricular fibrillation followed by cardiac resuscitation using a closed chest technique that incorporates the basic components of cardiopulmonary resuscitation in humans is herein described. The model was developed in 1988 and has been used in approximately 70 peer-reviewed publica... |
10,752 | Effects of the Selective Stretch-Activated Channel Blocker GsMtx4 on Stretch-Induced Changes in Refractoriness in Isolated Rat Hearts and on Ventricular Premature Beats and Arrhythmias after Coronary Occlusion in Swine. | Mechanical factors may contribute to ischemic ventricular arrhythmias. GsMtx4 peptide, a selective stretch-activated channel blocker, inhibits stretch-induced atrial arrhythmias. We aimed to assess whether GsMtx4 protects against ventricular ectopy and arrhythmias following coronary occlusion in swine. First, the effec... |
10,753 | Cardiac magnetic resonance for prediction of arrhythmogenic areas. | Catheter ablation has been widely used to manage recurrent atrial and ventricular arrhythmias. It has been established that contrast-enhanced magnetic resonance can accurately characterize the myocardium. In this review, we summarize the role of cardiac magnetic resonance in identification of arrhythmogenic substrates,... |
10,754 | Managing cardiac arrest with refractory ventricular fibrillation in the emergency department: Conventional cardiopulmonary resuscitation versus extracorporeal cardiopulmonary resuscitation. | Refractory ventricular fibrillation, resistant to conventional cardiopulmonary resuscitation (CPR), is a life threatening rhythm encountered in the emergency department. Although previous reports suggest the use of extracorporeal CPR can improve the clinical outcomes in patients with prolonged cardiac arrest, the effec... |
10,755 | Femoral venous oxygen saturation obtained during CPR predicts successful resuscitation in a pig model. | Central venous oxygen saturation has been shown to reflect the adequacy of tissue oxygenation during cardiopulmonary resuscitation (CPR), thereby enabling the assessment of CPR quality and the prediction of restoration of spontaneous circulation (ROSC). The femoral vein can be easily accessed during CPR. We determined ... |
10,756 | Impact of Concomitant Tricuspid Annuloplasty on Tricuspid Regurgitation, Right Ventricular Function, and Pulmonary Artery Hypertension After Repair of Mitral Valve Prolapse. | For patients undergoing mitral valve (MV) repair, the indications for and results of concomitant tricuspid annuloplasty remain controversial.</AbstractText>This study was designed to compare a strategy of routine concomitant tricuspid annuloplasty for moderate tricuspid regurgitation (TR) or tricuspid annular dilation ... |
10,757 | Right ventricular hypertrophy is associated with cardiovascular events in hypertrophic cardiomyopathy: evidence from study with magnetic resonance imaging. | Although left ventricular (LV) morphology and function have been well studied in hypertrophic cardiomyopathy (HCM), few data exist regarding the right ventricle. Accordingly, we studied right ventricular (RV) morphology and function and their effect on cardiovascular events in HCM using cardiac magnetic resonance (CMR)... |
10,758 | Therapeutic hypothermia in patients with out-of-hospital arrest. | Therapeutic hypothermia (TH) is increasingly used in patients presenting with out-of-hospital cardiac arrest (OHCA). Such strategies derive from data that suggest TH may improve survival and attenuate adverse neurological outcomes associated with the cardiac arrest. Consequently, TH has been integrated into various gui... |
10,759 | Detection of left atrial thrombus by intracardiac echocardiography in patients undergoing ablation of atrial fibrillation. | The role of intracardiac echocardiography (ICE) to detect thrombus within left atrium (LA) before atrial fibrillation (AF) ablation despite a recent transesophageal echocardiogram (TEE) is not well defined. We examined the prevalence of LA/left atrial appendage (LAA) thrombus using ICE immediately prior to AF ablation ... |
10,760 | Secondary ventricular fibrillation or pulseless ventricular tachycardia during cardiac arrest and epinephrine dosing. | Development of ventricular fibrillation or pulseless ventricular tachycardia after an initial rhythm of pulseless electrical activity or asystole is associated with significantly increased cardiac arrest mortality.</AbstractText>To examine differences in epinephrine administration during cardiac arrest between patients... |
10,761 | Meta-Analysis on Risk Stratification of Asymptomatic Individuals With the Brugada Phenotype. | The prognosis of asymptomatic subjects remains the most controversial issue in Brugada syndrome (BS). A meta-analysis on the prognostic role of spontaneous type 1 electrocardiographic (ECG) pattern and programmed ventricular stimulation (PVS) in asymptomatic subjects with Brugada electrocardiogram was performed. Curren... |
10,762 | Pre-shock chest compression pause effects on termination of ventricular fibrillation/tachycardia and return of organized rhythm within mechanical and manual cardiopulmonary resuscitation. | Shorter manual chest compression pauses prior to defibrillation attempts is reported to improve the defibrillation success rate. Mechanical load-distributing band (LDB-) CPR enables shocks without compression pause. We studied pre-shock pause and termination of ventricular fibrillation/pulseless ventricular tachycardia... |
10,763 | Time course of appropriate implantable cardioverter-defibrillator therapy and implications for guideline-based driving restrictions. | American Heart Association/Heart Rhythm Society recommendations restrict driving in implantable cardioverter-defibrillator patients for 6 months after implant for secondary prevention or primary prevention with an appropriate therapy (antitachycardia pacing or shock) for ventricular arrhythmias (VA).</AbstractText>The ... |
10,764 | Brugada Syndrome: An Electrical Storm without Warning. | Brugada Syndrome (BrS) is an inherited channelopathy causing sodium channel dysfunction in cardiac myocyte. These patients are prone to develop Ventricular Fibrillation (VF) or polymorphic Ventricular Tachycardia (VT). Next to coronary artery disease and cardiomyopathies, BrS is an important cause of sudden cardiac dea... |
10,765 | Influence of baseline ejection fraction on the prognostic value of paravalvular leak after transcatheter aortic valve implantation. | Moderate or severe paravalvular leak (PVL ≥ moderate) after transcatheter aortic valve implantation (TAVI) is associated with poor outcomes. The aim of this study was to assess whether the baseline ejection fraction (EF) affects the impact of PVL on mortality after TAVI.</AbstractText>We analyzed 514 consecutive... |
10,766 | Sex Differences in Device Therapies for Ventricular Arrhythmias or Death in the Multicenter Automatic Defibrillator Implantation Trial With Cardiac Resynchronization Therapy (MADIT-CRT) Trial. | Studies suggest that women with ischemic heart disease are less likely to experience appropriate ICD therapies for ventricular arrhythmias (VT/VF). We evaluated the influence of sex on arrhythmic events or death in subjects enrolled in MADIT-CRT.</AbstractText>Arrhythmic event rates, defined as VT/VF treated with defib... |
10,767 | The number of prehospital defibrillation shocks and 1-month survival in patients with out-of-hospital cardiac arrest. | The relationship between the number of pre-hospital defibrillation shocks and treatment outcome in patients with out-of-hospital cardiac arrest (OHCA) presenting with ventricular fibrillation (VF) is unknown currently. We examined the association between the number of pre-hospitalization defibrillation shocks and 1-mon... |
10,768 | Extracorporeal membrane oxygenation after protracted ventricular fibrillation cardiac arrest: case report and discussion. | Extracorporeal membrane oxygenation (ECMO) is a method to provide temporary cardiac and respiratory support to critically ill patients. In recent years, the role of ECMO in emergency departments (EDs) for select adults has increased. We present the dramatic case of a 29-year-old man who was placed on venoarterial ECMO ... |
10,769 | Different Impacts of Time From Collapse to First Cardiopulmonary Resuscitation on Outcomes After Witnessed Out-of-Hospital Cardiac Arrest in Adults. | It is well known that cardiopulmonary resuscitation (CPR) should be attempted as early as possible after out-of-hospital cardiac arrest (OHCA). However, it is unclear about the impact of time to CPR on OHCA outcome by first documented rhythm (pulseless ventricular tachycardia/ventricular fibrillation [pVT/VF], pulseles... |
10,770 | ECG Patterns In Cardiac Resynchronization Therapy. | Cardiac resynchronization therapy is an established treatment modality in heart failure. Though non-response is a serious issue. To address this issue, a good understanding of the electrical activation during underlying intrinsic ventricular activation, biventricular as well as right- and left ventricular pacing is nee... |
10,771 | Conjoined Inferior Pulmonary Veins during Pulmonary Vein Isolation: Prevalence and Novel Approach for Pulmonary Vein Isolation with Cryoballoon. | Cardiac resynchronization therapy is an established treatment modality in heart failure. Though non-response is a serious issue. To address this issue, a good understanding of the electrical activation during left bundle branch block, biventricular, as well as right- and left ventricular pacing is needed. This way by i... |
10,772 | Optimizing CRT - Do We Need More Leads and Delivery Methods. | Cardiac resynchronization therapy (CRT) is an established therapeutic option in symptomatic heart failure with reduced ejection fraction and evidence of left ventricular (LV) conduction delay (QRS width ≥120 ms), especially when typical left bundle branch block is present. The rationale behind CRT is restoration... |
10,773 | How To Identify & Treat Epicardial Origin Of Outflow Tract Tachycardias. | The right ventricle outflow tract (RVOT) is the most common site of origin of idiopathic ventricular arrhythmias. The typical outflow tract arrhythmias pattern on ECG is an inferior axis deviation and left bundle branch block when originated on the RVOT and right bundle branch block morphology when originated on the le... |
10,774 | A Questionable Indication For ICD Extraction After Successful VT Ablation. | Sustained ventricular tachyarrhythmias represent a kind of complication shared by a number of clinical presentations of heart disease, sometimes leading to sudden cardiac death. Many efforts have been made in the fight against such a complication, mainly being represented by the implantable cardioverter defibrillator (... |
10,775 | [The automated external defibrillator in the resuscitation chain. The importance of the AED examined]. | The survival rate for those suffering an out-of-hospital cardiac arrest (OHCA) is improving slowly, with > 90% of the survivors being discharged from hospital with cognitive function intact. A recent analysis of the ARREST (AmsteRdam Resuscitation Study) group documented an increase in survival rates with favourable... |
10,776 | The Past, Present, and Potential Future of Sodium Channel Block as an Atrial Fibrillation Suppressing Strategy. | Despite major advances in arrhythmia therapy, atrial fibrillation (AF) remains a challenge. A significant limitation in AF management is the lack of safe and effective drugs to restore and/or maintain sinus rhythm. The rational design of a new generation of AF-selective Na(+) channel blockers (NCBs) is emerging as a pr... |
10,777 | Ventricular arrhythmia incidence in the rat is reduced by naloxone. | This study characterized the antiarrhythmic effects of the opioid receptor antagonist naloxone in rats subject to electrically induced and ischemic arrhythmias. Naloxone (2, 8 and 32 μmol/kg/min) was examined on heart rate, blood pressure, and the electrocardiogram (EKG) as well as for effectiveness against arrhy... |
10,778 | Long-term outcomes of catheter ablation of atrial fibrillation in dilated cardiomyopathy. | The long-term outcomes, efficacy and safety of catheter ablation in atrial fibrillation (AF) patients with dilated cardiomyopathy (DCM) have not been reported previously.</AbstractText>Forty nine patients with AF (59% longstanding persistent AF, LSP-AF) and DCM were enrolled. Circumferential pulmonary vein ablation (CP... |
10,779 | Rationale and design of a randomized, double-blind, event-driven, multicentre study comparing the efficacy and safety of oral rivaroxaban with placebo for reducing the risk of death, myocardial infarction or stroke in subjects with heart failure and significant coronary artery disease following an exacerbation of heart... | Thrombin is a critical element of crosstalk between pathways contributing to worsening of established heart failure (HF). The aim of this study is to explore the efficacy and safety of rivaroxaban 2.5 mg bid compared with placebo (with standard care) after an exacerbation of HF in patients with reduced ejection ... |
10,780 | Quantitative tissue-tracking cardiac magnetic resonance (CMR) of left atrial deformation and the risk of stroke in patients with atrial fibrillation. | Recent evidence suggests that left atrial (LA) dysfunction may be mechanistically contributing to cerebrovascular events in patients with atrial fibrillation (AF). We investigated the association between regional LA function and a prior history of stroke during sinus rhythm in patients referred for catheter ablation of... |
10,781 | Reduction in Inappropriate ICD Therapy in MADIT-RIT Patients Without History of Atrial Tachyarrhythmia. | There are limited data whether history of atrial tachyarrhythmia (AT) modifies the risk of inappropriate ICD therapy, or the efficacy of novel ICD programming to reduce inappropriate ICD therapy events.</AbstractText>In MADIT-RIT, we investigated the effects of novel ICD programming with high-rate cut-off VT zone "... |
10,782 | Gene therapy to treat cardiac arrhythmias. | Gene therapy to treat electrical dysfunction of the heart is an appealing strategy because of the limited therapeutic options available to manage the most-severe cardiac arrhythmias, such as ventricular tachycardia, ventricular fibrillation, and asystole. However, cardiac genetic manipulation is challenging, given the ... |
10,783 | Late gadolinium enhancement of cardiac magnetic resonance imaging indicates abnormalities of time-domain T-wave alternans in hypertrophic cardiomyopathy with ventricular tachycardia. | The presence of myocardial scar detected by late gadolinium enhancement (LGE) on cardiac magnetic resonance (CMR) imaging has been described as a good independent predictor of mortality in patients with hypertrophic cardiomyopathy (HCM). Time-domain T-wave alternans (TWA) is also a potential predictor of cardiac mortal... |
10,784 | Use of Anticoagulants and Antiplatelet Agents in Stable Outpatients with Coronary Artery Disease and Atrial Fibrillation. International CLARIFY Registry. | Few data are available regarding the use of antithrombotic strategies in coronary artery disease patients with atrial fibrillation (AF) in everyday practice. We sought to describe the prevalence of AF and its antithrombotic management in a contemporary population of patients with stable coronary artery disease.</Abstra... |
10,785 | Diltiazem vs. Metoprolol in the Management of Atrial Fibrillation or Flutter with Rapid Ventricular Rate in the Emergency Department. | Diltiazem (calcium channel blocker) and metoprolol (beta-blocker) are both commonly used to treat atrial fibrillation/flutter (AFF) in the emergency department (ED). However, there is considerable regional variability in emergency physician practice patterns and debate among physicians as to which agent is more effecti... |
10,786 | Predictive value of programmed ventricular stimulation after catheter ablation of post-infarction ventricular tachycardia. | A recent meta-analysis demonstrated a survival benefit in post-infarction patients whose ventricular tachycardia (VT) was rendered noninducible by catheter ablation. Furthermore, patients with noninducible VT had a lower VT recurrence rate than did patients whose VT remained inducible after ablation.</AbstractText>The ... |
10,787 | Dynamics of AV coupling during human atrial fibrillation: role of atrial rate. | The causal relationship between atrial and ventricular activities during human atrial fibrillation (AF) is poorly understood. This study analyzed the effects of an increase in atrial rate on the link between atrial and ventricular activities during AF. Atrial and ventricular time series were determined in 14 patients d... |
10,788 | Clinical characteristics, precipitating factors, management and outcome of patients with prior stroke hospitalised with heart failure: an observational report from the Middle East. | The purpose of this study is to report the prevalence, clinical characteristics, precipitating factors, management and outcome of patients with prior stroke hospitalised with acute heart failure (HF).</AbstractText>Retrospective analysis of prospectively collected data.</AbstractText>Data were derived from Gulf CARE (G... |
10,789 | Patient selection in heart failure with preserved ejection fraction clinical trials. | Recent clinical trials in patients with heart failure with preserved ejection fraction (HFpEF) have provided important insights into participant selection strategies. Historically, HFpEF trials have included patients with relatively preserved left ventricular ejection fraction ranging from 40% to 55% and a clinical his... |
10,790 | Safety and Efficacy of the Totally Subcutaneous Implantable Defibrillator: 2-Year Results From a Pooled Analysis of the IDE Study and EFFORTLESS Registry. | The entirely subcutaneous implantable cardioverter-defibrillator (S-ICD) is the first implantable defibrillator that avoids placing electrodes in or around the heart. Two large prospective studies (IDE [S-ICD System IDE Clinical Investigation] and EFFORTLESS [Boston Scientific Post Market S-ICD Registry]) have reported... |
10,791 | Brugada syndrome: clinical and genetic findings. | Brugada syndrome is a rare, inherited cardiac disease leading to ventricular fibrillation and sudden cardiac death in structurally normal hearts. Clinical diagnosis requires a Brugada type I electrocardiographic pattern in combination with other clinical features. The most effective approach to unmasking this diagnosti... |
10,792 | The relationship between tricuspid regurgitation severity and right atrial mechanics: a speckle tracking echocardiography study. | The aim at this study was to assess the influence of the tricuspid regurgitation volume (TRvol) in right atrium (RA) reservoir phase myocardial mechanics. We included 55 heart failure (HF) patients referred for transthoracic echocardiography during a 2-month period. 18 Had HF with a reduced ejection fraction (HFREF) an... |
10,793 | Comparison of the efficiency of Na+/Ca2+ exchanger or Na+/H+ exchanger inhibition and their combination in reducing coronary reperfusion-induced arrhythmias. | During ischaemia/reperfusion, the rise in [Na(+)](i), induced by simultaneous depression of the Na(+)/K(+)-ATPase and activation of the Na(+)/H(+) exchanger (NHE), shifts the Na(+)/Ca(2+) exchanger (NCX) into reverse transport mode, resulting in Ca(2+)(i)overload, which is a critical factor in enhancing the liability t... |
10,794 | Validation of a simple risk stratification tool for patients implanted with Cardiac Resynchronization Therapy: the VALID-CRT risk score. | Mortality after cardiac resynchronization therapy (CRT) is difficult to predict. We sought to design and validate a simple prognostic score for patients implanted with CRT, based on readily available clinical variables, including age, gender, left ventricular ejection fraction (LVEF), New York Heart Association (NYHA) ... |
10,795 | Intraarrest rhythms and rhythm conversion in asphyxial cardiac arrest. | The objective was to analyze the cardiac arrest rhythms presenting during asphyxial cardiac arrest (ACA).</AbstractText>Asphyxial cardiac arrest was induced in 30 Landrace large white piglets, aged 12 to 15 weeks and with a mean (±SD) weight of 20 (±2) kg. After the onset of cardiac arrest, the animals w... |
10,796 | Variations of heart rate variability parameters prior to the onset of ventricular tachyarrhythmia and sinus tachycardia in ICD patients. Results from the heart rate variability analysis with automated ICDs (HAWAI) registry. | The HAWAI registry evaluated the role of heart rate variability in predicting the occurrence of ventricular tachycardia and fibrillation (VT/VF) and sinus tachycardia in patients with an implantable cardioverter-defibrillator (45 patients with 155 RR recordings). A significant decrease of the mean value of all RR inter... |
10,797 | The relationship of QRS morphology with cardiac structure and function in patients with heart failure. | The relationship of QRS morphology with cardiac structure and function in patients with heart failure is uncertain.</AbstractText>Patients with a clinical diagnosis of heart failure and objective evidence of cardiac dysfunction [either a left ventricular ejection fraction (LVEF) <50 % or an amino-terminal pro-b... |
10,798 | Effects of antiarrhythmic peptide 10 on acute ventricular arrhythmia. | To observe the effects antiarrhythmic peptide 10 (AAP10) aon acute ventricular arrhythmia and the phosphorylation state of ischemic myocardium connexin.</AbstractText>Acute total ischemia and partial ischemia models were established by ceasing perfusion and ligating the left anterior descending coronary artery in SD ra... |
10,799 | The effects of serotonin on the electrophysiological properties of atrioventricular node during an experimental atrial fibrillation. | A few studies explored the atrioventricular (AV) nodal effects of 5-hydroxytyptamine (serotonin, 5-HT) during supraventricular tachyarrhythmia. The aims of the present study are to investigate (i) 5-HT effects on the rate-dependent electrophysiological functions of AV node during atrial fibrillation (AF) and (ii) the p... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.