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600 | Surgical closure of combined symptomatic patent foramen ovale and atrial septum aneurysm for prevention of recurrent cerebral emboli. | Patients with patent foramen ovale (PFO) have an undefined but certainly considerable risk of repeated cerebral ischemia due to paradoxical embolism. Especially, if a cerebrovascular event has already occurred and the combination with an atrial septum aneurysm (ASA) is present this risk increases tremendously. The aim ... |
601 | Closure of atrial septal defect in the adult. Cardiac remodeling is an early event. | Study aimed to describe the extent and the temporal profile of cardiac remodeling after atrial septal defect closure in the adult.</AbstractText>Prospective and longitudinal echocardiographic assessment of right and left heart size before and after (1 day-1 week/1/4/12 months) surgical or catheter-based atrial septal c... |
602 | Multiple appropriate and spurious defibrillator shocks in a patient with right ventricular cardiomyopathy. | An implantable cardioverter defibrillator (ICD) has been implanted in a 69-year-old patient with arrhythmogenic right ventricular cardiomyopathy (ARVC) for treatment of syncopal ventricular tachycardia (VT). Two types of ICD-related emergencies complicated the clinical course within 15 months. The first arrhythmic even... |
603 | Spironolactone and its main metabolite canrenoic acid block hKv1.5, Kv4.3 and Kv7.1 + minK channels. | Both spironolactone (SP) and its main metabolite, canrenoic acid (CA), prolong cardiac action potential duration and decrease the Kv11.1 (HERG) current. We examined the effects of SP and CA on cardiac hKv1.5, Kv4.3 and Kv7.1+minK channels that generate the human I(Kur), I(to1) and I(Ks), which contribute to the control... |
604 | Electrophysiological and haemodynamic effects of endothelin ETA and ETB receptors in normal and ischaemic working rabbit hearts. | The aims of this study were to determine if endothelin-1 (ET-1) under normal and ischaemic conditions exhibits a direct arrhythmogenic effect that is independent of its ability to cause coronary vasoconstriction, and to determine the contribution of the ET(A) and ET(B) receptor subtype. ET(A/B) (with ET-1) and ET(A) (E... |
605 | The frequency and pattern of cardiotoxicity observed with capecitabine used in conjunction with oxaliplatin in patients treated for advanced colorectal cancer (CRC). | We examined the cardiotoxicity in 153 patients treated with capecitabine and oxaliplatin in two prospective trials for advanced colorectal cancer. Ten patients (6.5%) developed cardiac events. One patient (0.7%) had sudden death, one patient developed cardiac failure with raised troponin I while another developed ventr... |
606 | Surgical intervention for advanced valvular heart disease in 227 cases. | Although the results of surgical treatment in cardiac valve disease continue to improve, the postoperative mortality rate and the rate of complications in patients with advanced valvular heart disease (AVHD) are still very high. We did this retrospective study to summarize the surgical experience of heart valve replace... |
607 | Long-term clinical outcome in patients with severe left ventricular dysfunction and an implantable cardioverter-defibrillator after ventricular tachyarrhythmias. | Left ventricular ejection fraction (LVEF) is accepted as an important prognostic marker in patients (pts) with implantable cardioverter-defibrillators (ICD). The impact of this therapeutic approach in the survival of pts with life-threatening arrhythmias and severe left ventricular dysfunction remains a matter of discu... |
608 | Deployment of left ventricular lead from the ipsilateral side of central vein obstruction. | Cardiac resynchronisation therapy improves symptoms and reduces mortality in patients with chronic heart failure. In patients with previously implanted devices, particularly automatic defibrillators, central venous stenoses provide a challenge to upgrading to resynchronisation devices. We present a patient with central... |
609 | Benign outcome in a long-term follow-up of patients with hypertrophic cardiomyopathy in Brazil. | Selected patients with hypertrophic cardiomyopathy (HCM) have 3% to 4% annual mortality as compared to only 0.5% to 1.5% in nonselected patients. Our aim was to evaluate survival and prognostic factors in HCM in patients in a tertiary care center.</AbstractText>From 1980 to 1997, 214 patients were prospectively studied... |
610 | The presence of contractile reserve has no predictive value for the evolution of left ventricular function following atrio-ventricular node ablation in patients with permanent atrial fibrillation. | Transcatheter ablation of the atrio-ventricular (AV) node followed by ventricular pacing has been shown to improve symptoms and quality of life (QOL) of patients with permanent atrial fibrillation (AF). In a considerable number of patients, cardiac function deteriorates after AV node ablation. We aimed to determine whe... |
611 | Clinical predictors of cardiac events in patients with isolated syncope and negative electrophysiologic study. | Patients with syncope or near syncope of unknown etiology represent a great challenge to cardiologists. An initial symptomatic episode triggers a series of diagnostic analysis which remain unsatisfactory when negative. More invasive tools such as electrophysiologic testing yield only partial answers to risk stratificat... |
612 | Left ventricular pacing through the anterior interventricular vein in a patient with mechanical tricuspid, aortic and mitral valves. | Transvenous endocardial pacemaker implantation is contraindicated in patients after mechanical tricuspid valve replacement. A 76-year-old woman who suffered from bradyarrhythmia was implanted with a left ventricular pacing lead through a transvenous coronary vein after aortic, mitral, and tricuspid valve replacements. ... |
613 | Atrioventricular valve procedures with repeat fontan operations: influence of valve pathology, ventricular function, and arrhythmias on outcome. | The purpose of this study is to analyze atrioventricular valve procedures when performed in association with repeat Fontan operations and to determine the influence of atrioventricular valvar pathology, ventricular function, and arrhythmias on outcome.</AbstractText>Between December 1994 and August 2004, 80 patients ha... |
614 | Patients, mean age 70 years, with automatic implantable cardioverter-defibrillators treated with dual-chamber rate responsive pacing (DDDR-70) have a higher mortality than patients with backup ventricular pacing (VVI-40) at 3.7-year follow-up. | One study showed in 506 patients with automatic implantable cardioverter-defibrillators (AICDs) that the mortality at 1-year follow-up was 6.5% with ventricular backup pacing at 40/minute (VVI-40) versus 10.1% in patients with dual-chamber rate responsive pacing at 70/minute (DDDR-70).</AbstractText>We performed a retr... |
615 | [Analysis of the frequency of cardiac arrhythmias and conduction disturbances from a health-care perspective]. | Over the last few years, our understanding of the mechanisms underlying cardiac arrhythmias has increased substantially. However, few data on their prevalence exist. Our objectives were to analyze the prevalence of cardiac arrhythmias and conduction disturbances in cardiology clinic outpatients and to determine the num... |
616 | Ischemic enterocolitis examined by colonoscopy and selective angiography. | To study the value of colonoscopy and selective angiography in diagnosing ischemic enterocolitis.</AbstractText>Among the 16 cases under study, 10 cases had hypertension and a history of coronary artery disease (one was hospitalized for sub-ventricular-wall infarction). The blood pressure of 10 of the 16 cases ranged f... |
617 | Myocardial perfusion/metabolism mismatch and ventricular arrhythmias in the chronic post infarction state. | Ventricular arrhythmias have been shown to originate in the myocardial peri-infarct region due to irregular heterotopic conduction. Hypoperfused but viable myocardium is often localised in those areas and may be involved in the pathogenesis of arrhythmias. We tested the hypothesis that these myocardial perfusion/metabo... |
618 | Tempol reduces reperfusion-induced arrhythmias in anaesthetized rats. | The generation of reactive oxygen species (ROS) contributes to reperfusion-induced arrhythmias. In the present study, the antiarrhythmic effects of tempol and tiron, two membrane-permeable radical scavengers, on reperfusion-induced arrhythmias in rats in vivo were investigated. The anaesthetized rats were subjected to ... |
619 | A review of carvedilol arrhythmia data in clinical trials. | beta-Blockers are currently being evaluated more intensively to define their role in clinical use as antiarrhythmic agents. beta-Adrenergic blockade has been studied in relation to atrial fibrillation, ventricular arrhythmias, and sudden death; however, it is apparent from a number of studies that not all beta-blockers... |
620 | Antiadrenergic therapy in the control of atrial fibrillation. | Atrial fibrillation (AF) in heart failure develops commonly in older individuals and its prevalence increases as heart failure severity progresses. Because of deteriorating hemodynamics, patients with heart failure are at increased risk for developing AF and, conversely, AF in heart failure patients is associated with ... |
621 | Beta-Adrenergic blockers as antiarrhythmic and antifibrillatory compounds: an overview. | Beta-Adrenergic blockers have a wide spectrum of action for controlling cardiac arrhythmias that is larger than initially thought. Data from the past several decades indicate that, as an antiarrhythmic class, beta-blockers remain among the very few pharmacologic agents that reduce the incidence of sudden cardiac death,... |
622 | Carvedilol mitigates adverse effects of epinephrine during cardiopulmonary resuscitation. | Earlier studies have implicated the adverse effects of beta- and alpha(1)-adrenergic receptors during cardiopulmonary resuscitation (CPR). Because carvedilol is both a nonselective beta- and alpha1-selective adrenergic receptor-blocking agent, we hypothesized that pretreatment with carvedilol would convert the actions ... |
623 | High-sensitivity C-reactive protein is predictive of successful cardioversion for atrial fibrillation and maintenance of sinus rhythm after conversion. | Cardioversion for atrial fibrillation (AF) is the most effective treatment for the restoration of sinus rhythm (SR). Recently, an elevated level of hs-CRP has been shown to be associated with AF burden, suggesting that inflammation increases the propensity for persistence of AF. We examined whether the level of high-se... |
624 | Providing automated external defibrillators to urban police officers in addition to a fire department rapid defibrillation program is not effective. | The aim of this study was to determine if providing automated external defibrillators (AEDs) to urban police officers would increase the proportion of patients with out-of-hospital cardiac arrest (OOH-CA) who were discharged alive from the hospital.</AbstractText>This prospective, controlled study was conducted in a ci... |
625 | Are transthoracic echocardiographic parameters associated with atrial fibrillation recurrence or stroke? Results from the Atrial Fibrillation Follow-Up Investigation of Rhythm Management (AFFIRM) study. | The purpose of this study was to evaluate the associations of transthoracic echocardiographic parameters with recurrent atrial fibrillation (AF) and/or stroke.</AbstractText>The Atrial Fibrillation Follow-up Investigation of Rhythm Management (AFFIRM) study, an evaluation of elderly patients with AF at risk for stroke,... |
626 | Phosphorylated heat shock protein 27 is involved in enhanced heart tolerance to ischemia in short-term type 1 diabetic rats. | To examine the tolerance of type 1 diabetic hearts to ischemia and reperfusion injury. Myocardial contents of 27-kDa and 70-kDa heat shock proteins (hsp) as well as phosphorylated hsp27 were also determined.</AbstractText>Hearts from hyperglycemic rats 3 weeks after streptozocin injection and age-matched normal rats we... |
627 | Volumetric cine CMR to quantify atrial structure and function in patients with atrial dysrhythmias. | To implement a cardiac magnetic resonance (CMR)-based protocol to define atrial structure and function in individuals with paroxysmal atrial fibrillation (PAF), heritable cardiac conduction and myocardial disease with atrial dysrhtyhmias (HCCMD), and healthy controls.</AbstractText>Fifteen controls, 20 PAF, and 12 HCCM... |
628 | Fish oil supplementation and risk of ventricular tachycardia and ventricular fibrillation in patients with implantable defibrillators: a randomized controlled trial. | Clinical studies of omega-3 polyunsaturated fatty acids (PUFAs) have shown a reduction in sudden cardiac death, suggesting that omega-3 PUFAs may have antiarrhythmic effects.</AbstractText>To determine whether omega-3 PUFAs have beneficial antiarrhythmic effects in patients with a history of sustained ventricular tachy... |
629 | Hypothermia improves defibrillation success and resuscitation outcomes from ventricular fibrillation. | Induced hypothermia is recommended to improve neurological outcomes in unconscious survivors of out-of-hospital ventricular fibrillation (VF) cardiac arrest. Patients resuscitated from a VF arrest are at risk of refibrillation, but there are few data on the effects of already existing hypothermia on defibrillation and ... |
630 | Thoracic spinal cord stimulation reduces the risk of ischemic ventricular arrhythmias in a postinfarction heart failure canine model. | Thoracic spinal cord stimulation (SCS) is a promising therapy in treating refractory angina. This study was designed to investigate SCS with regard to the risk of arrhythmias during myocardial ischemia and its cardiac electrophysiological effects.</AbstractText>We studied 22 dogs with healed anterior myocardial infarct... |
631 | Doppler estimation of left ventricular filling pressures in patients with mitral valve disease. | Conventional Doppler measurements have limitations in the prediction of left atrial pressure (LAP) in patients with mitral valve disease (MVD), given the confounding effect of valve area, left ventricular (LV) relaxation, and stiffness. However, the time interval between the onset of early diastolic mitral inflow veloc... |
632 | Very high survival among patients defibrillated at an early stage after in-hospital ventricular fibrillation on wards with and without monitoring facilities. | The association between the interval between collapse and defibrillation and outcome is well described in out of hospital cardiac arrest but not as well in in-hospital cardiac arrest. We report the outcome among patients who suffered an in-hospital cardiac arrest and were found in ventricular fibrillation (VF) with the... |
633 | Supraventricular tachycardia with a baseline ECG pattern of Brugada syndrome. | The typical arrhythmias found in patients with the Brugada syndrome is either ventricular fibrillation or polymorphic ventricular tachycardia. We report the case of a patient who presented with supraventricular tachycardia accompanied by ECG features of the Brugada syndrome (BrS) during both tachyarrhythmia and sinus r... |
634 | Cross-ventricular pacemaker-mediated tachycardia by myopotential induction during biventricular pacing. | Patients in permanent atrial fibrillation treated for heart failure and ventricular asynchrony can be implanted with conventional dual chamber pacemakers (DDD) pacemakers used in the biventricular mode. The left ventricular lead is connected to the atrial channel.</AbstractText>We report the case of a patient who devel... |
635 | Cerebral oxygenation during defibrillator threshold testing of implantable cardioverter defibrillators. | The induction of ventricular fibrillation (VF) during defibrillator threshold testing of implantable cardioverter defibrillators (ICD) provokes global cerebral hypoperfusion and impaired oxygen delivery. Limited data are available on the neurophysiological effects of defibrillator threshold testing. Near infrared spect... |
636 | Detection of the defibrillation threshold using the upper limit of vulnerability following defibrillator implantation. | This study was designed to test defibrillation threshold (DFT) with the least number of fibrillation inductions using upper limit of vulnerability (ULV) and to describe the most practical set of ICD during DFT following implantation.</AbstractText>Although the correlation between ULV and DFT has been well described, th... |
637 | The prevention of sudden cardiac death: the role of the automated external defibrillator. | Sudden death is usually the result of hemodynamically destabilizing ventricular tachycardia or ventricular fibrillation. Because the only definitive treatment for ventricular tachycardia/ventricular fibrillation is a direct current shock, and because that defibrillating shock must be given very quickly to be effective,... |
638 | Differential functional effects of two 5-HT4 receptor isoforms in adult cardiomyocytes. | Serotonin 5-HT4 receptors are present in human atrial myocytes and have been proposed to contribute to the generation of atrial fibrillation. However, 5-HT4 receptors have so far been only found in human and pig atria and are absent from the heart of small laboratory animals, such as rat, guinea pig, rabbit and frog, w... |
639 | Consequences of atrial electrical remodeling for the anti-arrhythmic action of class IC and class III drugs. | Atrial fibrillation (AF) induces electrical and ionic remodeling of the atria. We investigated whether AF-induced remodeling alters the electrophysiological and anti-fibrillatory effects of class I (flecainide) and class III (d-sotalol, ibutilide) anti-arrhythmic drugs.</AbstractText>In 9 goats, the effects of flecaini... |
640 | [Immediate cardioversion of atrial fibrillation and atrial flutter lasting less than 90 days by ibutilide versus propafenone: a multicenter study]. | To compare the efficacy and safety of ibutilide versus propafenone in immediate cardioversion of atrial fibrillation (AF) and atrial flutter (AFL) lasted less than 90 days.</AbstractText>212 consecutive patients suffering from AF or AFL all lasting less than 90 days that were diagnosed and treated in 5 medical centers ... |
641 | Electrocardiographic changes and myocarditis in trichinellosis: a retrospective study of 154 patients. | The frequencies of electrocardiographic (ECG) abnormalities and myocarditis were determined, retrospectively, among 154 cases of trichinellosis [101 males and 53 females, with a mean (S.D.) age of 35.60 (14.64) years] who were hospitalized at the University Hospital for Infectious Diseases in Zagreb, Croatia, over a 5-... |
642 | Therapy implications of transthoracic echocardiography in acute ischemic stroke patients. | Stroke is the third leading cause of death in most Western countries. Cardioembolism might be responsible for 15% to 20% of ischemic strokes. Although atrial fibrillation can be diagnosed by electrocardiography, the remaining causes of cardioembolic stroke are diagnosed by echocardiography. Recent recommendations on th... |
643 | Atrial fibrillation in KCNE1-null mice. | Although atrial fibrillation is the most common serious cardiac arrhythmia, the fundamental molecular pathways remain undefined. Mutations in KCNQ1, one component of a sympathetically activated cardiac potassium channel complex, cause familial atrial fibrillation, although the mechanisms in vivo are unknown. We show he... |
644 | Role of repolarization restitution in the development of coarse and fine atrial fibrillation in the isolated canine right atria. | Although the role of action potential duration restitution (APD-R) in the initiation and maintenance of ventricular fibrillation (VF) has been the subject of numerous investigations, its role in the generation of atrial fibrillation (AF) is less well studied. The cellular and ionic basis for coarse versus fine AF is no... |
645 | Atrial response to ventricular antitachycardia pacing discriminates mechanism of 1:1 atrioventricular tachycardia. | Inappropriate shocks from implantable cardioverter defibrillators (ICD) remain a significant clinical problem despite device discrimination algorithms. The atrial response to antitachycardia pacing (ATP) may determine the mechanism of 1:1 A:V tachycardia.</AbstractText>For this study we refer to sinus tachycardia, atri... |
646 | Outcomes after ventricular fibrillation out-of-hospital cardiac arrest: expanding the chain of survival. | Coronary heart disease is the most common cause of death in the United States, with ventricular fibrillation (VF) the most common initial rhythm when cardiac disease causes arrest. Survival after VF out-of-hospital cardiac arrest (OHCA) depends on a sequence of events called the chain of survival, which Includes rapid ... |
647 | [Brugada syndrome]. | Brugada syndrome is believed to be responsible for 4 to 12% of all sudden deaths and for 20% of deaths in patients with structurally normal hearts. As a distinct clinical entity with a high risk of sudden cardiac death it was first described in 1992. The syndrome characterized by ST segment elevation in right precoardi... |
648 | Optimized perioperative biventricular pacing in setting of right heart failure. | A 78-year-old female with prior atrioventricular junctional ablation for paroxysmal atrial fibrillation and implantation of DDDR pacemaker underwent repair of severe tricuspid insufficiency. Effects of biventricular pacing were tested with temporary wires at the conclusion of cardiopulmonary bypass.</AbstractText>An ul... |
649 | Cardiac resynchronisation therapy versus dual site right ventricular pacing in a patient with permanent pacemaker and congestive heart failure. | A 46-year-old male patient who had long-term right ventricular (RV) pacing for symptomatic complete heart block, initially by an epicardial, later with an endocardial pacing lead at the RV apex, developed congestive heart failure (CHF) and chronic atrial fibrillation 7 years following the pacemaker implantation and was... |
650 | Do we need pacemakers resistant to magnetic resonance imaging? | Manufacturers of pacemakers (PM) and of magnetic resonance imaging (MRI) devices state that MRI scanning of PM wearers is contraindicated. This paper tries to summarise which effects can interfere with PM, what can be hazardous, and how treatment of PM in MRI can be modified to guarantee compatibility.</AbstractText>Al... |
651 | n-3 Fatty acids and ventricular arrhythmias in patients with ischaemic heart disease and implantable cardioverter defibrillators. | To investigate the relationship between serum content of n-3 polyunsaturated fatty acids (PUFA) and the incidence of ventricular arrhythmias in patients with an implantable cardioverter defibrillator (ICD).</AbstractText>We included 98 patients with ischaemic heart disease and an ICD. The numbers of ventricular fibrill... |
652 | Comparing the global mRNA expression profile of human atrial and ventricular myocardium with high-density oligonucleotide arrays. | The knowledge of chamber-specific gene expression in human atrial and ventricular myocardium is essential for the understanding of myocardial function and the basis for the identification of putative therapeutic targets in the treatment of cardiac arrhythmia and heart failure. In this study the gene expression pattern ... |
653 | Cardioprotective effects of [5-(2-methyl-5-fluorophenyl)furan-2-ylcarbonyl]guanidine (KR-32568) in an anesthetized rat model of ischemia and reperfusion heart injury. | The effects of a novel sodium/hydrogen exchanger-1 (NHE-1) inhibitor, KR-32568, were studied in an anesthetized rat model of 30 min ischemia/2.5 h reperfusion heart injury. KR-32568 dose-dependently inhibited NHE-1-mediated rabbit platelet swelling induced by intracellular acidification. In our anesthetized rat model, ... |
654 | Implantation of an "extracardiac" internal cardioverter defibrillator in a 6-month-old infant. | In infants and small children, ICD implantation is a challenge due to technical limitations and a significant number of complications. This report describes ICD implantation in a 6-month-old infant (body weight 5.5 kg). A completely extracardiac defibrillation system was implanted using a transvenous lead subcutaneousl... |
655 | Shortness of breath, syncope, and cardiac arrest caused by systemic mastocytosis. | During a 3-month period, a 33-year-old man presented to the emergency department on 4 occasions with dyspnea, palpitations, and syncope. His initial presentation was accompanied by acute myocardial injury and ventricular fibrillation. An extensive evaluation spanned the 3 months and included echocardiography, cardiac c... |
656 | Demographic and temporal trends in out of hospital sudden cardiac death in Belfast. | To determine the epidemiology of out of hospital sudden cardiac death (OHSCD) in Belfast from 1 August 2003 to 31 July 2004.</AbstractText>Prospective examination of out of hospital cardiac arrests by using the Utstein style and necropsy reports. World Health Organization criteria were applied to determine the number o... |
657 | Clinical, pathological, and biochemical studies in a patient with propionic acidemia and fatal cardiomyopathy. | A patient diagnosed at 9 months with a milder form of propionic acidemia was functioning at a near normal intellectual level and a normal neurological level at age 8. After 2-week history of feeling "poorly" but functioning normally, she became acutely ill and succumbed to heart failure and ventricular fibrillation in ... |
658 | Influence of ventricular pacing on myocardial oxygen tension. | The influence of heart rate on cardiac output, oxygen consumption, and myocardial activity has been widely investigated. However, the influence of heart rate on myocardial oxygen tension (pO2) remains unclear. Since the introduction of flexible pO2 micro catheters to measure partial oxygen tension in a working muscle, ... |
659 | Assessment of left ventricular function by Doppler tissue imaging in patients with atrial fibrillation following acute myocardial infarction. | We studied tissue Doppler parameters in patients with atrial fibrillation following acute myocardial infarction, and their relation to P wave durations and P dispersion.</AbstractText>Echocardiographic examination was performed in 84 consecutive patients with first anterior acute myocardial infarction. In addition to o... |
660 | Effects of long-term beta-blocker therapy on P-wave duration and dispersion in patients with rheumatic mitral stenosis. | P-wave dispersion (PWD), has been defined as the difference between maximum and minimum P-wave duration. Prolonged P-wave duration and increased PWD have been reported to be related with increased risk for atrial fibrillation (AF). AF is the most common sustained arrhythmia encountered in patients with rheumatic mitral... |
661 | Effects of Na(+) and K(+) channel blockade on vulnerability to and termination of fibrillation in simulated normal cardiac tissue. | Na(+) and K(+) channel-blocking drugs have anti- and proarrhythmic effects. Their effects during fibrillation, however, remain poorly understood. We used computer simulation of a two-dimensional (2-D) structurally normal tissue model with phase I of the Luo-Rudy action potential model to study the effects of Na(+) and ... |
662 | On-pump/beating-heart myocardial protection for isolated or combined coronary artery bypass grafting in patients with severe left ventricle dysfunction: assessment of myocardial function and clinical outcome. | Myocardial protection in coronary artery bypass grafting (CABG) with severe left ventricular (LV) dysfunction is still a surgical dilemma. Preoperative myocardial infarction (MI) and postoperative low output syndrome are serious complications in cases of inadequate protection of the heart, which has limited myocardial ... |
663 | Prevention of atrial fibrillation with angiotensin-converting enzyme inhibitors and angiotensin receptor blockers: a meta-analysis. | This study was designed to identify all randomized clinical trial data evaluating angiotensin-converting enzyme inhibitors or angiotensin receptor blockers for the prevention of atrial fibrillation (AF), to estimate the magnitude of this effect and to identify patient subgroups most likely to benefit.</AbstractText>Ang... |
664 | Assessment of left ventricular systolic function in patients with chronic atrial fibrillation and dilated cardiomyopathy using the ratio of preceding to prepreceding R-R intervals. | The objective of this study was to determine the relation between left ventricular (LV) systolic function and the ratio of preceding (RR1) to prepreceding (RR2) R-R intervals in patients with chronic atrial fibrillation (AF) and dilated cardiomyopathy. LV systolic function (Emax) was examined using a conductance cathet... |
665 | Abnormalities on ECG and telemetry predict stroke outcome at 3 months. | ECG is a useful tool in monitoring vital functions in patients with acute stroke; however, fairly little evidence is available concerning the prevalence and the prognostic impact of ECG findings in patients with acute cerebral infarction and acute intracerebral haemorrhage (ICH).</AbstractText>This analysis was based o... |
666 | [Non-cardiac surgery for patients with arrhythmia]. | Arrhythmia is the most common perioperative cardiac complication during noncardiac surgery. Most perioperative arrhythmia is benign, but fatal arrhythmia can occur, requiring emergency care. Arrhythmia is divided into tachycardia and bradycardia. Both arrhythmias often result in cardiac failure. Ischemic heart disease ... |
667 | Interventional approach to reduce thromboembolic risk in patients with atrial fibrillation ineligible for oral anticoagulation. | The annual incidence of stroke in patients with nonrheumatic atrial fibrillation averages 5% per year and increases with age, left ventricular dysfunction, hypertension, diabetes or prior stroke. Since in nonrheumatic atrial fibrillation 91% of left atrial thrombi are located in the left atrial appendage, in patients i... |
668 | Crisis management during anaesthesia: cardiac arrest. | Cardiac arrest attributable to anaesthesia occurs at the rate of between 0.5 and 1 case per 10 000 cases, tends to have a different profile to that of cardiac arrest occurring elsewhere, and has an in-hospital mortality of 20%. However, as individual practitioners encounter cardiac arrest rarely, the rapidity with whic... |
669 | [The survey on radiofrequency catheter ablation in Chinese military hospitals]. | To analyze the cumulative data of radiofrequency catheter ablation (RFCA) in the treatment of tachyarrhythmias in Chinese military hospitals.</AbstractText>Chinese PLA Cardiology Association sponsored the registration and statistical analysis. RFCA results were registered from January 1, 1993 to December 30, 2000 and f... |
670 | [Sixty-four cases of percutaneous coronary angioplasty on saphenous vein bypass grafts]. | To evaluate the early clinical result of percutaneous transluminal coronary intervention (PCI) and stenting on saphenous vein grafts.</AbstractText>Percutaneous intervention was performed in 91 saphenous vein grafts in 64 patients. The data of clinical results during operation and hospitalization and that of other inte... |
671 | The treatment of cardiac causes of sudden death, syncope, and seizure. | The treatment for pediatric causes for sudden cardiac death can either be general and supportive or, in 2005, can be much more etiology specific. While antiarrhythmic therapy and activity restriction have been for years the mainstay of therapy, newer technologies such as radiofrequency ablation and automatic implantabl... |
672 | The Long QT and Brugada syndromes: causes of unexpected syncope and sudden cardiac death in children and young adults. | Inherited Long QT and Brugada syndromes cause syncope and sudden cardiac death due to ventricular tachyarrhythmias. Diagnosis may be difficult and the syncopal events are commonly misdiagnosed as neurally mediated (vaso-vagal) episodes or as "seizures". The details of the events (onset, offset, sequelae, precipitating ... |
673 | Clinical predictors of defibrillation threshold in patients with implantable cardioverter-defibrillators. | Safety of patients with malignant ventricular arrhythmias, treated with implantable cardioverter defibrillators (ICD), depends on the possibility of immediate and effective intracardiac defibrillation. It is especially important in those patients in whom there is a risk of increased defibrillation threshold (DFT) of ve... |
674 | Waveform analysis of ventricular fibrillation to predict defibrillation. | Ventricular fibrillation occurs during many cases of cardiac arrest and is treated with rescue shocks. Coarse ventricular fibrillation occurs earlier after the onset of cardiac arrest and is more likely to be converted to an organized rhythm with pulses by rescue shocks. Less organized or fine ventricular fibrillation ... |
675 | Agonal respirations during cardiac arrest. | This review examines the physiologic understanding and clinical implications of agonal respirations during cardiac arrest.</AbstractText>Agonal respirations originate from lower brainstem neurons as higher centers become increasingly hypoxic during cardiac arrest. No single layperson descriptor consistently identifies ... |
676 | Delaying shock for cardiopulmonary resuscitation: does it save lives? | Out-of-hospital cardiac arrest claims more than 450,000 lives annually in North America. Many communities have dedicated significant resources to provide rapid defibrillator response for patients in ventricular fibrillation. In spite of these efforts, mortality from out-of-hospital cardiac arrest has not improved signi... |
677 | Appropriate and inappropriate ventricular therapies, quality of life, and mortality among primary and secondary prevention implantable cardioverter defibrillator patients: results from the Pacing Fast VT REduces Shock ThErapies (PainFREE Rx II) trial. | Implantable cardioverter defibrillators (ICDs) reduce mortality in primary and secondary prevention. Quality of life, mortality, appropriate therapies for specific ventricular rhythms, and inappropriate therapies for supraventricular tachycardia (SVT) were compared among 582 patients (primary prevention=248; secondary ... |
678 | Ibutilide--recent molecular insights and accumulating evidence for use in atrial flutter and fibrillation. | Ibutilide is a 'pure' class III antiarrhythmic drug, used intravenously against atrial flutter and fibrillation. At a cellular level it exerts two main actions: induction of a persistent Na+ current sensitive to dihydropyridine Ca2+ channel blockers and potent inhibition of the cardiac rapid delayed rectifier K+ curren... |
679 | [An algorithm study on telecardiogram diagnosis based on multivariate autoregressive model and two-lead ECG signals]. | In view of the time delay caused by reconstruction of signals at remote sites, a direct classification method with high accuracy suitable for telediagnosis of electrocardiogram (ECG) signals is studied.</AbstractText>The data for analysis and classification was obtained from MIT-BIH database, including 300 samples each... |
680 | Epidermolysis bullosa simplex associated with muscular dystrophy and cardiac involvement. | We report a new clinical variant of epidermolysis bullosa simplex with muscular dystrophy (EBS-MD) that was associated with cardiac involvement. A 33-year-old patient had atrial fibrillation, pericardial effusion, and hypokinetic left ventricular cardiac walls. The muscle biopsy material revealed diffuse endomysial fib... |
681 | Heart failure. | Although heart failure is common, disabling, and deadly, there are now many effective treatments, at least for patients with low left-ventricular ejection fraction. For all, angiotensin-converting-enzyme inhibitors and beta blockers are the essential disease-modifying treatments, improving symptoms, reducing hospital a... |
682 | [The pulmonary toxicity of amiodarone: six-case report]. | To report the clinical features and the prognosis, the methods of diagnosis and treatment, and the early detection of the pulmonary toxicity induced by amiodarone.</AbstractText>The clinical course, the findings of X-ray and CT and the results of treatment were summarized and analyzed in six patients with amiodarone-in... |
683 | [The electrophysiological study and implantable cardioverter defibrillator therapy for the patients with Brugada syndrome]. | Clinical observation of electrophysiological study and implantable cardioverter defibrillator (ICD) therapy in patients with Brugada syndrome.</AbstractText>Ten patients (all male) with Brugada wave (spontaneous or propafenone test positive in ECG) underwent electrophysiological study (EPS). The mean age was (41 +/- 10... |
684 | [Combined cardiac resynchronization and implantable cardioversion defibrillation]. | To examine the efficacy and safety of implantation of the device with combined cardiac resynchronization therapy (CRT) and implantable cardioversion defibrillation (ICD) capabilities.</AbstractText>Eleven patients aged 48 - 80 (71.6 +/- 9.5) years, 7 male and 4 female, were included in the study. All patients had eithe... |
685 | [Percutaneous coronary intervention combined cardiac resynchronization therapy for refractory heart failure secondary to ischemic cardiomyopathy]. | To evaluate the efficacy and safety of percutaneous coronary intervention (PCI) combined cardiac resynchronization therapy (CRT) for refractory heart failure secondary to ischemic cardiomyopathy (ICM).</AbstractText>PCI and CRT were performed in 7 ICM patients confirmed by angiography with NYHA class IV, QRS duration &... |
686 | Reality of out of hospital cardiac arrest. | The high mortality rates associated with out of hospital cardiac arrest, particularly those occurring in the home, stress the need for early treatment in the form of publicly accessible external defibrillators. |
687 | Temporary left ventricular pacing improves haemodynamic performance in patients requiring epicardial pacing post cardiac surgery. | In the 1990s, sequential atrio-ventricular pacing demonstrated haemodynamic benefit relative to right ventricular pacing in patients with sinus rhythm requiring pacing post cardiopulmonary bypass. The benefit of biventricular pacing has been demonstrated in non-surgical patients with severe left ventricular dysfunction... |
688 | The perplexing complexity of cardiac arrhythmias: beyond electrical remodeling. | Cardiac arrhythmias continue to pose a major medical challenge and significant public health burden. Atrial fibrillation, the most prevalent arrhythmia, affects more than two million Americans annually and is associated with a twofold increase in mortality. In addition, more than 250,000 Americans each year suffer vent... |
689 | Glucose and insulin influences on heart and brain in cardiac surgery. | The elective global ischemia of on-pump coronary artery bypass surgery contributes to the incidence of postoperative mortality, complications, and use of resources. In addition to cardiopulmonary bypass and techniques for myocardial protection such as aortic cross clamp, ventricular fibrillation, and cardioplegia, the ... |
690 | Increased cortical cerebral blood flow with LUCAS; a new device for mechanical chest compressions compared to standard external compressions during experimental cardiopulmonary resuscitation. | LUCAS is a new device for mechanical compression and decompression of the chest during cardiopulmonary resuscitation (CPR). The aim of this study was to compare the efficacy of this new device with standard manual external chest compressions using cerebral cortical blood flow, cerebral oxygen extraction, and end-tidal ... |
691 | Details of the initial management of cardiac arrest occurring in the workplace in a French urban area. | Our goal was to evaluate the details and management of cardiac arrest (CA) occurring in the working environment.</AbstractText>We conducted a 10-year retrospective study based on the medical records of the Garches mobile intensive care unit. CA occurring in the workplace ("Inside W." group) was matched with two CA outs... |
692 | Evolution of a community-wide early defibrillation programme experience over 13 years using police/fire personnel and paramedics as responders. | In November 1990, a 2-year trial period was initiated in which police officers in the city of Rochester, Minnesota, were trained in the operation of automated external defibrillators (AEDs). Following the trial, the program was expanded as the city grew in population and area. In 1998 firefighters also were equipped wi... |
693 | International Resuscitation Network Registry: design, rationale and preliminary results. | There is a lack of high-quality information about the effectiveness of resuscitation interventions and international differences in structure, process and outcome after out-of-hospital cardiac arrest and cardiopulmonary resuscitation because data are not collected uniformly. An internet-based international registry cou... |
694 | [Magnetic resonance imaging in a patient with pacemaker]. | The patient is a 24-year-old female with a dual-chamber pacemaker, who had intracranial hypertension, progressive visual loss, and several inconclusive cranial tomographies. She underwent magnetic resonance imaging, even though that diagnostic method is absolutely contraindicated in patients with pacemakers. |
695 | Myocardial compliance was not altered after acute induction of atrial fibrillation in sheep. | Although left ventricular (LV) contractility in atrial fibrillation (Af) is known to change in a beat-to-beat fashion, little is known about the changes in LV compliance in Af.</AbstractText><AbstractText Label="MATERIAL/METHODS" NlmCategory="METHODS">We experimentally induced tachycardic Af (average heart rate - 154 b... |
696 | Angiotensin-converting enzyme inhibitor therapy inhibits the progression from paroxysmal atrial fibrillation to chronic atrial fibrillation. | Atrial fibrillation is a progressive disease, which in the paroxysmal form (PAF) becomes more frequent and finally becomes chronic (CAF). A retrospective analysis of patients with PAF was conducted to examine the hypothesis that angiotensin-converting enzyme inhibitors (ACEI) will prevent the progression to CAF.</Abstr... |
697 | Heart Failure with Preserved Systolic Function. | At least 30% of patients with congestive heart failure have preserved systolic function in the absence of significant valvular heart disease. These patients have diastolic dysfunction. Patients are frequently older and hypertensive. The rate of hospitalization in these patients is similar to that in patients with systo... |
698 | Is hypertension a prothrombotic state? | Hypertension is complicated by thrombosis-related events (such as myocardial infarction and stroke), and despite the high vascular pressures, these thrombotic occlusive events paradoxically occur more often than hemorrhagic episodes. The predisposition for thrombogenesis is increased in hypertension, which leads to cha... |
699 | Cardiac arrest in a soccer player: a unique case of anomalous coronary origin detected by 16-row multislice computed tomography coronary angiography. | Anomalous origin of the coronary arteries may be present in otherwise normal subjects without clinical significance, but can also be the cause of myocardial ischemia and sudden death in both adults and teenagers. In particular, the origin of the left main coronary artery or left anterior descending artery from the righ... |
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