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11,700 | Admittance to detect alterations in left ventricular stroke volume. | Implantable cardioverter-defibrillators monitor intracardiac electrograms (EGMs) to discriminate between ventricular and supraventricular tachycardias. The incidence of inappropriate shocks remains high because of misclassification of the tachycardia in an otherwise hemodynamically stable individual. Coupling EGMs with... |
11,701 | [Electrical storm: definition, prevalence, causes and prognostic implications]. | Electrical storm (ES) represents a state of cardiac electrical instability which manifests by multiple episodes of ventricular tachyarrhythmia (VT) within a short time. In patients with an implantable cardioverter-defibrillator (ICD), ES is best defined as ≥ 3 appropriate VT detections in 24 h, treated by antita... |
11,702 | Left Atrium: Still a Neglected Chamber? | It is widely recognized that an effective cardiovascular system is based upon both a good ventricular-vascular interplay and a good ventricular-atrial interaction in all the phases of cardiac cycle. Moreover, left atrial dysfunction has been identified to be contributory in several common cardiovascular conditions, suc... |
11,703 | Carotid baroreceptor stimulation prevents arrhythmias induced by acute myocardial infarction through autonomic modulation. | : Electrical carotid baroreceptor stimulation (CBS) has shown therapeutic potential for resistant hypertension and heart failure by resetting autonomic nervous system, but the impacts on arrhythmias remains unclear. This study evaluated the effects of CBS on ventricular electrophysiological properties in normal dog hea... |
11,704 | Atrial fibrillation and biomarkers of myocardial fibrosis in heart failure. | Alterations of collagen metabolism present in heart failure promote the fibrotic substrate for the development of atrial fibrillation (AF). Myocardial collagen I synthesis and degradation can be assessed indirectly by circulating biomarkers such as the carboxy terminal propeptide (PICP) and carboxy-terminal telopeptide... |
11,705 | Effects of adenosine monophosphate on induction of therapeutic hypothermia and neuronal damage after cardiopulmonary resuscitation in rats. | Animal studies and pathophysiological considerations suggest that therapeutic hypothermia after cardiopulmonary resuscitation is the more effective the earlier it is induced. Therefore this study is sought to examine whether pharmacological facilitated hypothermia by administration of 5'-adenosine monophosphate (AMP) i... |
11,706 | Resolution of left ventricular thrombus by rivaroxaban. | Intracardiac thrombus is a potentially life-threatening condition, with a high risk of embolic complications. Although vitamin K antagonists have been traditionally used for the treatment of intracardiac thrombus, they have relevant disadvantages that limit their use. Rivaroxaban is a once daily oral anticoagulant, cur... |
11,707 | Comparing 14-day adhesive patch with 24-h Holter monitoring. | Barrett PM, Komatireddy R, Haaser S et al. Comparison of 24-hour Holter monitoring with 14-day novel adhesive patch electrocardiographic monitoring. Am. J. Med. 127(1), 95.e11–95.e17 (2014). The investigation of cardiac arrhythmias in the outpatient ambulatory setting has traditionally been initiated with the Ho... |
11,708 | Clinical trials in patients with heart failure and preserved left ventricular ejection fraction. | There is no robust evidence that any treatment can modify the natural history of patients with heart failure and preserved left ventricular ejection fraction (HFpEF), although most agree that diuretics can control congestion and improve symptoms. HFpEF is often complicated by systemic and pulmonary hypertension, atrial... |
11,709 | Long-term prognostic value of major and minor ECG abnormalities in latent Keshan disease with suspect chronic Keshan disease. | This study aims to determine whether baseline electrocardiography (ECG) abnormalities, the appearance of new ECG abnormalities, or other clinical characteristics are associated with increased rates of progression to chronic Keshan disease (KD) among patients with latent KD.</AbstractText>Four hundred and fourteen new l... |
11,710 | [Liver rupture with hemoperitoneum as rare complication of cardiopulmonary resuscitation in young patient with acute myocardial infarction]. | Rupture of the liver is a rare but a very serious complication of cardiopulmonary resuscitation. The presented case report describes a young patient with acute myocardial infarction with ST segment elevation treated by primary PCI. Just during admission to the hospital she had ventricular fibrillation with prolonged re... |
11,711 | Electrical And Hemodynamic Evalution Of Ventricular And Supraventricular Tachycardias With An Implantable Dual-Chamber Pacemaker. | The discrimination between ventricular (VT) and supraventricular tachycardia (SVT) and the evaluation of their hemodynamic impact are essential issues in the arrhythmia management. A new pacing device features a tachycardia diagnostic system relying on simultaneous recording of the transvalvular impedance (TVI) and a s... |
11,712 | Treatment Or Cure Of Right Ventricular Outflow Tract Tachycardia. | Right ventricular outflow tract (RVOT) ventricular tachycardias (VT) occur in the absence of structural heart disease and are called idiopathic ventricular arrhythmias. These arrhythmias are thought to be produced by adenosine-sensitive, cyclic AMP mediated, triggered activity and are commonly observed in adolescents a... |
11,713 | Reperfusion-induced sustained ventricular tachycardia, leading to ventricular fibrillation, in chronically instrumented, intact, conscious mice. | Reperfusion-induced lethal ventricular arrhythmias are observed during relief of coronary artery spasm, with unstable angina, exercise-induced ischemia, and silent ischemia. Accordingly, significant efforts are underway to understand the mechanisms responsible for reperfusion-induced lethal arrhythmias and mice have be... |
11,714 | Gain-of-function mutation in TASK-4 channels and severe cardiac conduction disorder. | Analyzing a patient with progressive and severe cardiac conduction disorder combined with idiopathic ventricular fibrillation (IVF), we identified a splice site mutation in the sodium channel gene SCN5A. Due to the severe phenotype, we performed whole-exome sequencing (WES) and identified an additional mutation in the ... |
11,715 | Developing a novel comprehensive framework for the investigation of cellular and whole heart electrophysiology in the in situ human heart: historical perspectives, current progress and future prospects. | Understanding the mechanisms of fatal ventricular arrhythmias is of great importance. In view of the many electrophysiological differences that exist between animal species and humans, the acquisition of basic electrophysiological data in the intact human heart is essential to drive and complement experimental work in ... |
11,716 | Sex differences in cardiac electrophysiology and clinical arrhythmias: epidemiology, therapeutics, and mechanisms. | Sex differences in cardiac electrophysiological properties and arrhythmias are evident in epidemiologic and investigative studies as well as in daily patient care. At the supraventricular level, women are at increased risk of sick sinus syndrome and atrioventricular (AV) node re-entrant tachycardia, whereas men manifes... |
11,717 | Influence of steroid therapy on the incidence of pericarditis and atrial fibrillation after percutaneous epicardial mapping and ablation for ventricular tachycardia. | This study evaluates the influence of 3 therapeutic approaches on the incidence of pericarditis and atrial fibrillation (AF) after percutaneous epicardial mapping and ablation for ventricular tachycardia.</AbstractText>Eighty-five consecutive procedures (2006-2011) were retrospectively reviewed. After the first 17 proc... |
11,718 | Atrial fibrillation and heart failure: is atrial fibrillation a disease? | Atrial fibrillation in heart failure often occur together. The relationship between atrial fibrillation and heart failure has remained a subject of research. The main manifestation of the violation of hydrodynamics in heart failure is the increased end-diastolic pressure, which is transmitted through the intercommunica... |
11,719 | Spatial repolarization heterogeneity and survival in Chagas disease. | We investigated if cardiac spatial repolarization heterogeneity might be associated with an increased risk of death in patients with chronic Chagas disease.</AbstractText>Repolarization heterogeneity was assessed using the V-index, a recently introduced metric founded on a biophysical model of the ECG. This metric prov... |
11,720 | Effects of radiofrequency catheter ablation on left ventricular structure and function in patients with atrial fibrillation: a meta-analysis. | Radiofrequency catheter ablation (RFCA) is an effective therapy for atrial fibrillation (AF). This study was designed to investigate the effects of RFCA on left ventricular (LV) structure and function in AF patients.</AbstractText>A systematic literature search in MEDLINE, EMBASE, and Cochrane Central Register of Contr... |
11,721 | Safety of herbal medicine in treatment of weight loss. | Obesity is a common health problem in both developed and developing countries. There are many unconventional therapies, including herbal medicine, to treat this condition. Some people believe that herbal medicines are safe. This case and review is about adverse complication of treating obesity with some herbal medicine... |
11,722 | [Antiarrhythmic effect of TJ0711]. | To study the antiarrhythmic effect of the newly developed alpha/beta-blocker TJ0711, a variety of animal models of arrhythmia were induced by CaCl2, ouabain and ischemia/reperfusion. Glass microelectrode technique was used to observe action potentials of right ventricular papillary muscle of guinea pig. The onset time ... |
11,723 | Spiral-wave dynamics in ionically realistic mathematical models for human ventricular tissue: the effects of periodic deformation. | We carry out an extensive numerical study of the dynamics of spiral waves of electrical activation, in the presence of periodic deformation (PD) in two-dimensional simulation domains, in the biophysically realistic mathematical models of human ventricular tissue due to (a) ten-Tusscher and Panfilov (the TP06 model) and... |
11,724 | Complications of catheter ablation of ventricular tachycardia: a single-center experience. | Catheter ablation has become an established treatment modality for a broad spectrum of ventricular tachycardias (VTs). We analyzed incidence and predictors of major complications of VT ablation procedures in a high-volume expert center.</AbstractText>We evaluated 548 consecutive patients who underwent 722 ablation proc... |
11,725 | Acute anterior ST-elevation myocardial infarction and electrical storm secondary to nondominant right coronary artery occlusion. | A 42-year-old man emergently presented with chest pain and anterior ST elevation. Refractory ventricular arrhythmias and shock developed rapidly. A coronary angiogram revealed the acute occlusion of a nondominant right coronary artery. After percutaneous coronary intervention, the anterior ST elevation and ventricular ... |
11,726 | Extracorporeal membrane oxygenation for very high-risk transcatheter aortic valve implantation. | Transcatheter aortic valve implantation (TAVI) can cause profound haemodynamic perturbation in the peri-operative period. Veno-arterial extracorporeal membrane oxygenation (ECMO) can be used to provide cardiorespiratory support during this time, either prophylactically or emergently.</AbstractText>100 TAVI procedures w... |
11,727 | Selective late sodium current blockade with GS-458967 markedly reduces ischemia-induced atrial and ventricular repolarization alternans and ECG heterogeneity. | Ischemic heart disease is associated with dual risk for atrial and ventricular arrhythmias.</AbstractText>We examined whether selectively targeting late sodium channel current (INa) with GS-458967 (hereafter GS967) can reduce cardiac electrical instability and compared its effects to a clinically relevant dose of fleca... |
11,728 | The association between atrial fibrillation and sudden cardiac death: the relevance of heart failure. | The purpose of this study was to evaluate the role of congestive heart failure (CHF) in the association between atrial fibrillation (AF) and sudden cardiac death (SCD).</AbstractText>Recent studies have reported the possibility of an independent association between AF and SCD. We hypothesized that a history of CHF is a... |
11,729 | Is heart rate important for patients with heart failure in atrial fibrillation? | This study sought to investigate the relationship between resting ventricular rate and mortality in patients with chronic heart failure (CHF) and reduced left ventricular ejection fraction (LVEF) who were in sinus rhythm (SR) or atrial fibrillation (AF).</AbstractText>Slower heart rates are associated with better survi... |
11,730 | Cloning, functional characterization, and remodeling of K2P3.1 (TASK-1) potassium channels in a porcine model of atrial fibrillation and heart failure. | Effective treatment of atrial fibrillation (AF) remains an unmet need. Human K2P3.1 (TASK-1) K(+) channels display atrial-specific expression and may serve as novel antiarrhythmic targets. In rodents, inhibition of K2P3.1 causes prolongation of action potentials and QT intervals. We used a porcine model to further eluc... |
11,731 | Ryanodine receptor mutations presenting as idiopathic ventricular fibrillation: a report on two novel familial compound mutations, c.6224T>C and c.13781A>G, with the clinical presentation of idiopathic ventricular fibrillation. | Idiopathic ventricular fibrillation (IVF) is a rare genetically determined disease causing unexpected cardiac death in otherwise healthy individuals. This study identified two novel, functional heterozygous mutations in the ryanodine receptor 2 (RyR2) gene in a family with IVF. In the presented case all the patients re... |
11,732 | Surviving out-of-hospital cardiac arrest: just a matter of defibrillators? | Out-of-hospital sudden cardiac arrest (OHCA) is a leading cause of death all over the world. Although the outcome of OHCA resulting from 'nonshockable' rhythms (asystole and pulseless electrical activity) is poor regardless of resuscitation efforts, 'shockable' rhythms such as ventricular tachycardia or fibrillation ma... |
11,733 | Relationshi̇p between atrial fibrillation and coronary bypass surgery. | Atrial fibrillation (AF) is the most common arrhythmia seen after coronary artery surgery. The purpose this study was to determine incidence of AF that develops after coronary surgery and the factors affecting its development.</AbstractText>Four hundred and forty eight patients who had coronary bypass surgery between F... |
11,734 | Effect of left ventricular diastolic dysfunction on outcomes of atrial fibrillation ablation. | Left ventricular diastolic dysfunction (LVDD) is an important pathogenic factor for atrial fibrillation (AF). There are few data on the effect of LVDD on recurrence of AF after catheter ablation. A cohort of 124 patients (59.9 ± 11.7 years, 73.9% male, and 55% with paroxysmal AF) with recalcitrant AF and norm... |
11,735 | Feasibility study of electrocardiographic and respiratory gated, gadolinium enhanced magnetic resonance angiography of pulmonary veins and the impact of heart rate and rhythm on study quality. | We aimed to assess the feasibility of 3 dimensional (3D) respiratory and ECG gated, gadolinium enhanced magnetic resonance angiography (MRA) on a 3 Tesla (3 T) scanner for imaging pulmonary veins (PV) and left atrium (LA). The impact of heart rate (HR) and rhythm irregularity associated with atrial fibrillation (A... |
11,736 | Ventricular fibrillation triggered by PVCs from papillary muscles: clinical features and ablation. | Animal studies showed that papillary muscles can be sources of ventricular fibrillation (VF) in both the left and right ventricle, but this occurrence in humans has been described only in patients with ischemic heart disease.</AbstractText>To investigate the role of papillary muscle premature ventricular contractions (... |
11,737 | Increased prevalence of ECG markers for sudden cardiac arrest in refractory epilepsy. | People with epilepsy are at increased risk of sudden cardiac arrest (SCA) due to ECG-confirmed ventricular tachycardia/fibrillation, as seen in a community-based study. We aimed to determine whether ECG-risk markers of SCA are more prevalent in people with epilepsy.</AbstractText>In a cross-sectional, retrospective stu... |
11,738 | Hemodynamic directed CPR improves cerebral perfusion pressure and brain tissue oxygenation. | Advances in cardiopulmonary resuscitation (CPR) have focused on the generation and maintenance of adequate myocardial blood flow to optimize the return of spontaneous circulation and survival. Much of the morbidity associated with cardiac arrest survivors can be attributed to global brain hypoxic ischemic injury. The o... |
11,739 | Heart failure in younger patients: the Meta-analysis Global Group in Chronic Heart Failure (MAGGIC). | Our understanding of heart failure in younger patients is limited. The Meta-analysis Global Group in Chronic Heart Failure (MAGGIC) database, which consisted of 24 prospective observational studies and 7 randomized trials, was used to investigate the clinical characteristics, treatment, and outcomes of younger patients... |
11,740 | Pathophysiology, diagnosis, and treatment of mineralocorticoid disorders. | The renin-angiotensin-aldosterone system (RAAS) is a major regulator of blood pressure control, fluid, and electrolyte balance in humans. Chronic activation of mineralocorticoid production leads to dysregulation of the cardiovascular system and to hypertension. The key mineralocorticoid is aldosterone. Hyperaldosteroni... |
11,741 | Cardiovascular disease and thyroid function. | Thyroid function has a profound effect on the heart, and both all-cause and cardiovascular mortality rates are increased in hyperthyroidism. New-onset atrial fibrillation carries a prolonged risk for the development of hyperthyroidism, suggesting altered availability of thyroid hormones at the cellular level. Subclinic... |
11,742 | Epicardial ablation as a bailout in electrical storm? | Electrical storm (ES) is one of the most challenging clinical scenarios facing electrophysiologists, and in certain settings emergency ablation should be performed. The majority of ES occurs in patients with structural heart disease, predominantly coronary heart disease and nonischemic heart disease like right ventricu... |
11,743 | Atrial arrhythmias in the young: early onset atrial arrhythmias preceding a diagnosis of a primary muscular dystrophy. | The aetiology of atrial arrhythmias in the otherwise healthy and young is usually unrecognized. We hypothesized that rare cases of atrial arrhythmias in the young may represent the initial manifestation of a muscular dystrophy syndrome.</AbstractText>We describe the clinical characteristics, disease progression, result... |
11,744 | Impact of intra-aortic balloon pumping on hypotension and outcomes in acute right ventricular infarction. | This study investigated the immediate hemodynamic effects of intra-aortic balloon pump (IABP) support and clinical outcomes in patients with acute right ventricular infarction (RVI) complicated by hypotension.</AbstractText>IABP improves hypotension in patients with acute myocardial infarction and left ventricular shoc... |
11,745 | Supraventricular tachycardia due to blunt chest trauma in an adolescent. | Blunt chest trauma and its associated complications represent a rare cause of cardiac arrest in a healthy child, although an increasing number of these events have been reported. Victims are most often diagnosed in ventricular fibrillation or tachycardia. However, cardiac conduction abnormalities are also reported. In ... |
11,746 | Atrial fibrillation in patients undergoing liver transplantation-a single-center experience. | As the prevalence of atrial fibrillation rises with age and older patients increasingly receive transplants, the perioperative management of this common arrhythmia and its impact on outcomes in liver transplantation is of relevance.</AbstractText>Retrospective review of 757 recipients of liver transplantation from Janu... |
11,747 | Evolution of electrocardiographic abnormalities in association with neuromuscular disorders and survival in left ventricular hypertrabeculation/noncompaction. | Left ventricular hypertrabeculation/noncompaction (LVHT) is frequently associated with neuromuscular disorders (NMDs) and electrocardiographic (ECG) abnormalities. The prognostic relevance of newly developed ECG abnormalities in LVHT and its dependency on NMD is largely unknown. Aim of the following retrospective cohor... |
11,748 | Metabolic derangement and cardiac injury early after reperfusion following intermittent cross-clamp fibrillation in patients undergoing coronary artery bypass graft surgery using conventional or miniaturized cardiopulmonary bypass. | Myocardial ischemic stress and early reperfusion injury in patients undergoing coronary artery bypass grafting (CABG) operated on using intermittent cross-clamp fibrillation (ICCF) are not presently known. The role of mini-cardiopulmonary bypass (mCPB) versus conventional CPB (cCPB) during ICCF has not been investigate... |
11,749 | Magnetic resonance post-contrast T1 mapping in the human atrium: validation and impact on clinical outcome after catheter ablation for atrial fibrillation. | The impact of diffuse atrial fibrosis detected by T1 mapping on the clinical outcome after atrial fibrillation (AF) ablation is unknown.</AbstractText>This study aimed to validate and assess the impact of post-contrast cardiac magnetic resonance (CMR) imaging atrial T1 mapping on the clinical outcome after catheter abl... |
11,750 | New-onset atrial fibrillation predicts heart failure progression. | Atrial fibrillation and heart failure with reduced left ventricular ejection fraction have interrelated pathophysiologies. New-onset atrial fibrillation in heart failure patients has been associated with increased mortality, but has not been definitively related to clinical heart failure progression.</AbstractText>To t... |
11,751 | New-onset atrial fibrillation during acute coronary syndromes: predictors and prognosis. | New-onset atrial fibrillation (AF) frequently complicates myocardial infarction, with an incidence of 6-21%.</AbstractText>To assess the predictors and prognosis of new-onset AF during acute coronary syndromes (ACS).</AbstractText>We performed a retrospective observational cohort study including 902 consecutive patient... |
11,752 | Epicardial ablation for prevention of ventricular fibrillation in a patient with Brugada syndrome. | We present the case of a 60-year-old woman with Brugada syndrome, permanent type 1 electrocardiographic pattern, who had previously received an implantable cardioverter-defibrillator. She suffered frequent syncopal episodes and multiple appropriate shocks (around five per month) due to polymorphic ventricular tachycard... |
11,753 | [Atrial fibrillation and regular tachycardia in two young patients--are both treated with atrial fibrillation ablation?]. | Two young patients with documented episodes of symptomatic paroxysmal atrial fibrillation have been referred for pulmonary vein isolation. Both patients had a history of concomitant regular tachycardia. in both cases pulmonaryvein isolation has not been performed but in each patient a supraventricular tachycardia (righ... |
11,754 | Outflow tract premature ventricular depolarizations after atrial fibrillation ablation may reflect autonomic influences. | Autonomic modulation following catheter ablation of atrial fibrillation may promote the development of catecholamine-sensitive arrhythmias, such as outflow tract (OT) ventricular premature depolarizations (VPDs). The purpose of this study was to determine the incidence and prognostic significance of OT VPDs occurring i... |
11,755 | Inhibition of cardiac two-pore-domain K+ (K2P) channels--an emerging antiarrhythmic concept. | Effective and safe pharmacological management of cardiac arrhythmia still constitutes a major clinical challenge. Outward potassium currents mediated by two-pore-domain potassium (K2P) channels promote repolarization of excitable cells. In the heart, inhibition or genetic inactivation of K2P currents results in action ... |
11,756 | Clinical pacing post-conditioning during revascularization after AMI. | Intermittent dyssynchrony, induced by ventricular pacing, during early reperfusion reduces infarct size in pre-clinical studies. We evaluated cardioprotection by pacing post-conditioning (PPC) in ST-segment elevation myocardial infarction in a randomized, controlled, single-center, single-blinded, first-in-man study. P... |
11,757 | TNNI3K mutation in familial syndrome of conduction system disease, atrial tachyarrhythmia and dilated cardiomyopathy. | Locus mapping has uncovered diverse etiologies for familial atrial fibrillation (AF), dilated cardiomyopathy (DCM), and mixed cardiac phenotype syndromes, yet the molecular basis for these disorders remains idiopathic in most cases. Whole-exome sequencing (WES) provides a powerful new tool for familial disease gene dis... |
11,758 | Heart remodeling and ischemia-reperfusion arrhythmias linked to myocardial vitamin d receptors deficiency in obstructive nephropathy are reversed by paricalcitol. | Cardiovascular disease is often associated with chronic kidney disease and vice versa; myocardial vitamin D receptors (VDRs) are among the probable links between the 2 disorders. The vitamin D receptor activator paricalcitol protects against some renal and cardiovascular complications. However, the structural and elect... |
11,759 | Digoxin in patients with permanent atrial fibrillation: data from the RACE II study. | The Atrial Fibrillation Follow-up Investigation of Rhythm Management trial showed that digoxin was associated with increased mortality in patients with atrial fibrillation.</AbstractText>To assess the association of digoxin with cardiovascular (CV) morbidity and mortality in patients with permanent atrial fibrillation ... |
11,760 | Fibroblast growth factor-23 and incident atrial fibrillation: the Multi-Ethnic Study of Atherosclerosis (MESA) and the Cardiovascular Health Study (CHS). | Fibroblast growth factor-23 (FGF-23) is a hormone that promotes urinary phosphate excretion and regulates vitamin D metabolism. Circulating FGF-23 concentrations increase markedly in chronic kidney disease and are associated with increased risk of clinical cardiovascular events. FGF-23 may promote atrial fibrillation (... |
11,761 | Transoesophageal echocardiography for prediction of postoperative atrial fibrillation after isolated aortic valve replacement: two-dimensional speckle tracking for intraoperative assessment of left ventricular longitudinal strain. | Recent studies suggested association between impaired left ventricular long-axis function and arrhythmic events early after open heart surgery. This prospective study investigated the predictive value of a depressed intraoperative global longitudinal strain (GLS) for postoperative atrial fibrillation after isolated aor... |
11,762 | Left atrial appendage wall-motion velocity associates with recurrence of nonparoxysmal atrial fibrillation after catheter ablation. | Catheter ablation (CA) for nonparoxysmal atrial fibrillation (AF) is controversial due to its high recurrence rate. The aim of this study was to assess retrospectively the diagnostic value of preprocedural left atrial appendage (LAA) wall-motion velocity in predicting recurrence of AF within 1 year after CA. We hypothe... |
11,763 | [Reoperative cardiac surgery after previous coronary artery bypass grafting]. | Reoperative cardiac surgery after coronary artery bypass grafting( CABG) has been increasing. We reviewed 25 cases of reoperative cardiac surgery after CABG. Re-CABG was not included in this study. The patients consisted of 15 men and 10 women. The mean patient age was 74.4±6.3 years old. The reoperations were per... |
11,764 | Spinal cord stimulation for electrical storm refractory to conventional medical treatment: an emerging indication? | To observe the effect of thoracic spinal cord stimulation with dual octipolar epidural electrodes on episodes of ventricular tachycardia and ventricular fibrillation in a patient with nonischemic familial cardiomyopathy and severe electrical storm refractory to conventional medical treatment.</AbstractText>Following im... |
11,765 | Pretreatment with Assafoetida exerts dose-dependent dual effects on rat hearts. | Although many studies displayed the favorable effects of Assafoetida, some of them reported that high doses of Assafoetida could lead to harmful effects.</AbstractText>In this study, the effect of pretreatment with Assafoetida investigated on ischemic-reperfusion injury in isolated rat heart model.</AbstractText>Thirty... |
11,766 | Genotype-positive status in patients with hypertrophic cardiomyopathy is associated with higher rates of heart failure events. | The aim of the study was to clarify the relationship between genotype status and major cardiovascular outcomes in a large cohort of patients with hypertrophic cardiomyopathy.</AbstractText>Genetic testing was performed in 558 consecutive proband patients with hypertrophic cardiomyopathy. Baseline and follow-up (mean fo... |
11,767 | Triptan-induced torsades de pointes and ventricular fibrillation cardiac arrest: case report and review of the literature. | Migraine is a potentially debilitating neurologic disorder affecting approximately 12% of the United States population. Sumatriptan manufacturer-provided drug information states that life threatening arrhythmias, including ventricular tachycardia and ventricular fibrillation (VF), have been reported. A literature searc... |
11,768 | Intractable ventricular fibrillation: post ascending aortic dissection repair. | Ascending aortic dissection is a life threatening surgical emergency and carries high peri-operative mortality. Various biological adhesive materials are commonly used in such a surgery to enhance strengthening of separated layers of aortic wall. Despite of extensive use, embolization of the glue material remains a fea... |
11,769 | Incidence and predictors of atrial fibrillation and its impact on long-term survival in patients with supraventricular arrhythmias. | To determine the incidence and predictors of atrial fibrillation (AF) and its impact on survival in patients with other forms of supraventricular arrhythmias (SVAs) including atrial flutter (AFL), atrial tachycardia (AT), atrioventricular reentrant (AVRT), and AV nodal reentrant tachycardia (AVNRT). We hypothesized tha... |
11,770 | Electrophysiological effect of rotigaptide in rabbits with heart failure. | Rotigaptide is a new anti-arrhythmic peptide, which has recently been found to increase junctional conductance and prevent ischemia-induced ventricular tachycardia. In this study, we attempted to investigate the effects and mechanisms of rotigaptide on the vulnerability to ventricular arrhythmias in rabbits with heart ... |
11,771 | Does prior valve surgery change outcome in patients treated with cardiac resynchronization therapy? | Cardiac valve surgery (CVS) has been implicated as a potential barrier to optimal response after cardiac resynchronization therapy (CRT) though prospective data regarding outcome remains limited. We sought to determine CRT response in patients with a prior history of CVS.</AbstractText>We performed a retrospective anal... |
11,772 | Prevention of pacemaker-associated contact dermatitis by polytetrafluoroethylene sheet and conduit coating of the pacemaker system. | A 73-year-old female with sick sinus syndrome and atrial fibrillation was implanted with a ventricular demand inhibit pacemaker. She subsequently developed multiple episodes of skin irritation and necrosis. Skin patch testing revealed sensitivity to almost every component of the pacemaker system. The pacemaker was remo... |
11,773 | [Catheter ablation for the treatment of electrical storm: methods and outcome]. | Electrical storm imposes a negative effect on quality of life and increases patient mortality. Once antiarrhythmic drug therapy proves ineffective, catheter ablation becomes the therapy of choice. The preferred procedural endpoint following catheter ablation of ES is defined as lack of inducibility of any clinical or n... |
11,774 | [Electrical storm in the emergency room: clinical pathways]. | In patients with structural heart disease, occurrence of an electrical storm (ES) is associated with increased mortality acutely and during medium term follow-up. Depending on the underlying heart disease and baseline type of arrhythmia, different clinical pathways have to be followed to reach sustained freedom from ve... |
11,775 | Cardiovascular risk assessment before and after kidney transplantation. | Cardiovascular disease (CVD) is the leading cause of death in dialysis patients and the most common cause of death and allograft loss among kidney transplant recipients. End-stage renal disease (ESRD) is associated with an increased incidence and prevalence of a wide range of CVDs including coronary artery disease, str... |
11,776 | Breathless after bypass. | A 65-year-old normotensive, non-athletic man presented to the cardiology clinic with exertional dyspnoea and chest discomfort. Echocardiography revealed mild left ventricular hypertrophy with good systolic function but with regional wall motion abnormalities suggesting ischaemia. Coronary angiography showed significant... |
11,777 | Effectiveness of wearable defibrillators: systematic review and quality of evidence. | The objectives of this systematic literature review were to identify all published literature on wearable defibrillators, assess the wearable defibrillator's efficacy and effectiveness in general and among specific patient groups, including post-myocardial infarction, post coronary artery bypass grafting or percutaneou... |
11,778 | Risk stratification and treatment of brugada syndrome. | The Brugada syndrome (BS) is a hereditary disease characterized by typical electrocardiographic alterations (elevation of the ST segment in right precordial leads) that affects young individuals without structural heart disease, predisposing them to ventricular arrhythmias and sudden death (SD). Several genetic mutatio... |
11,779 | Transient repolarization alterations dominate the initial phase of an acute anterior infarction--a vectorcardiography study. | To study effects of ischemia-reperfusion on ventricular electrophysiology in humans by three-dimensional electrocardiography.</AbstractText>Fifty-seven patients with first-time acute anterior ST elevation myocardial infarction were monitored from admission and >24h after symptom onset with continuous vectorcardiogra... |
11,780 | The protective effect of heat shock protein 70 (Hsp70) in atrial fibrillation in various cardiomyopathy conditions. | Heat shock proteins (Hsp) protect myocardial cells from acute stress such as atrial fibrillation (AF) and also from the chronic stress. It is not understood that Hsp70 can prevent AF under cardiomyopathy (CM) conditions. Therefore, we hypothesized that Hsp70 might beneficially influence on the occurrence of AF in CM co... |
11,781 | Effects of renal sympathetic denervation on the atrial electrophysiology in dogs with pacing-induced heart failure. | Heart failure (HF) and atrial fibrillation (AF) are associated with sympathetic activation. Renal sympathetic denervation (RSD) can suppress AF vulnerability. The impact of RSD on atrial electrophysiology in experimental HF is unclear.</AbstractText>Twenty-two beagles were randomized into control, HF, and HF + RSD grou... |
11,782 | Recurrent right ventricular cardiac myxoma in a patient with Carney complex: a case report. | Carney complex is a multiple neoplasia syndrome involving cardiac, endocrine, neural and cutaneous tumors with a variety of pigmented skin lesions. It has an autosomal dominant mode of inheritance. Approximately 7% of cardiac myxomas are related to the Carney complex. Myxomas that occur as part of the Carney complex af... |
11,783 | A novel treatment strategy of new onset atrial fibrillation after cardiac surgery: an observational prospective study. | The aim of this prospective observational study was to evaluate the efficiency of a new escalating treatment strategy with vernakalant, flecainide and electrical cardioversion (EC) in patients with new onset atrial fibrillation (AF) after cardiac surgery.</AbstractText>24 patients with new onset AF after aortic valve s... |
11,784 | Bipolar radiofrequency ablation is useful for treating atrial fibrillation combined with heart valve diseases. | Atrial fibrillation (AF) is a common arrhymia, and it results in increased risk of thromboembolism and decreased cardiac function. In patients undergoing cardiac surgery, concomitant radiofrequency ablation to treat AF is effective in restoring sinus rhythm (SR). This study is an observational cohort study aimed to inv... |
11,785 | Transvenous atrial pacing from the superior vena cava stump after the hemi-fontan operation--a new approach. | The placement of a standard endocardial pacemaker system is challenging after a superior cavopulmonary connection (hemi-Fontan operation or Glenn shunt) as the continuity between the superior vena cava (SVC) and right atrium is divided. The standard transvenous approach for endocardial lead placement has therefore in g... |
11,786 | Whom should I refer in 2014 for cardiac resynchronization? | Heart failure continues to be a significant source of morbidity and mortality amongst Canadians. Many patients remain symptomatic despite guideline-directed medical therapy. For drug-refractory patients with dyssynchronous systolic heart failure, cardiac resynchronization therapy (CRT) has reliably reduced heart failur... |
11,787 | Low rate of cardiac events in first-degree relatives of diagnosis-negative young sudden unexplained death syndrome victims during follow-up. | Sudden unexplained death syndrome (SUDS) in young individuals often results from inherited cardiac disease. Accordingly, comprehensive examination in surviving first-degree relatives unmasks such disease in approximately 35% of the families. It is unknown whether individuals from diagnosis-negative families are at risk... |
11,788 | Novel technique for implantation of a cardioverter defibrillator in children. | An 8-year-old boy with hypertrophic nonobstructive cardiomyopathy with ventricular fibrillation underwent implantation of an implantable cardioverter defibrillator. The lead was inserted through a pursestring suture in the right atrial appendage, and the tip of coil was placed in the right ventricular apex under fluoro... |
11,789 | Sudden cardiac death in a dialysis patient: hyperkalemia reconsidered. | To many physicians, hyperkalemia is the first diagnosis ascribed to any patient with end-stage renal disease and abnormal electrocardiographic morphologies or dysrhythmias.</AbstractText>A 52-year-old man with end-stage renal disease presented in cardiac arrest. The patient was initially presumed to have hyperkalemia, ... |
11,790 | [Novel class III antiarrhythmic agent niferidile: review of experimental and clinical studies]. | This article reviews experimental and clinical studies of a novel antiarrhythmic agent niferidile. Niferidile, a class III antiarrhythmic agent, blocks potassium outward currents, prolongs repolarization and refractory periods predominantly in atria than in ventricles. Intravenous Niferidile was efficient for interrupt... |
11,791 | Clinical characteristics and long-term prognosis in patients with chronic heart failure and reduced ejection fraction in China. | Chronic heart failure with reduced ejection fraction (CHF-REF) remains a major public health problem with high morbidity and mortality, but the data on current treatment status and long-term prognosis in China were still missing.</AbstractText>Among prospectively recruited 2368 patients with CHF-REF in 10 hospitals, 21... |
11,792 | [Acquired long QT syndrome and cardiac arrest after general anesthesia. Case report and review of literature]. | A 30-year-old woman, with no medical history, is operated on for breast implants. In recovery room, an episode of torsade de pointes occurs, progressing to ventricular fibrillation. The ECG after cardiopulmonary resuscitation and conversion to a normal sinus rhythm shows a corrected QT interval prolongation, whereas it... |
11,793 | Noninducibility in postinfarction ventricular tachycardia as an end point for ventricular tachycardia ablation and its effects on outcomes: a meta-analysis. | Although ventricular tachycardia (VT) ablation is a widely used therapy for patients with VT, the ideal end points for this procedure are not well defined. We performed a meta-analysis of the published literature to assess the predictive value of noninducibility of postinfarction VT for long-term outcomes after VT abla... |
11,794 | Sleeping with the fishes: electromagnetic interference causing an inappropriate implantable cardioverter defibrillator shock. | A 60-year-old man with a cardiac defibrillator implanted due to previous ventricular fibrillation arrest and ischaemic cardiomyopathy received a shock while cleaning his fish pond. At the time, his immersed arm was close to a submersed water pump, but the patient was asymptomatic. As a result of the shock he lost consc... |
11,795 | Relation of chronic obstructive pulmonary disease to atrial and ventricular arrhythmias. | Chronic obstructive pulmonary disease (COPD) is associated with increased cardiovascular morbidity and mortality, yet the exact pathophysiological links remain unclear. Whether the presence and severity of COPD are associated with atrial or ventricular arrhythmias recorded on continuous electrocardiographic monitoring ... |
11,796 | Relation of smoking status to outcomes after cardiopulmonary resuscitation for in-hospital cardiac arrest. | In-hospital cardiac arrest (IHCA) is common and is associated with poor prognosis. Data on the effect of smoking on outcomes after IHCA are limited. We analyzed the Nationwide Inpatient Sample databases from 2003 to 2011 for all patients aged≥18 years who underwent cardiopulmonary resuscitation (CPR) for IHCA to... |
11,797 | Right heart dysfunction in heart failure with preserved ejection fraction. | Right heart function is not well characterized in patients with heart failure and preserved ejection fraction (HFpEF). The goal of this study was to examine the haemodynamic, clinical, and prognostic correlates of right ventricular dysfunction (RVD) in HFpEF.</AbstractText>Heart failure and preserved ejection fraction ... |
11,798 | Ranolazine effectively suppresses atrial fibrillation in the setting of heart failure. | There is a critical need for safer and more effective pharmacological management of atrial fibrillation (AF) in the setting of heart failure (HF).</AbstractText>This study investigates the electrophysiological, antiarrhythmic, and proarrhythmic effects of a clinically relevant concentration of ranolazine (5 μmol/... |
11,799 | Ventricular bigeminy after subcutaneous administration of apomorphine in a patient with refractory Parkinson's disease: a case report. | Apomorphine is a well established treatment for the management of sudden, unexpected and refractory levodopa-induced "off" states in fluctuating Parkinson's disease either as bolus injections or as continuous infusions. Incidents of atrial fibrillation associated with the administration of the drug have been reported i... |
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