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8,800 | Aggressive management of acute myocardial infarction: successful outcome in an older patient with cardiogenic shock. | A 71-year-old man was referred to our emergency department presenting with acute inferior and right ventricular myocardial infarction with cardiogenic shock. He developed ventricular fibrillation 80 minutes after arrival. Immediate defibrillation, mechanical ventilatory support with oxygenation, and inotropic agents we... |
8,801 | A community based epidemiological and clinical study of hospitalization of patients with congestive heart failure in Northern Iwate, Japan. | Community based studies of congestive heart failure (HF) are lacking in the Japanese population.</AbstractText>To delineate the epidemiological and clinical features of advanced HF in the general Japanese population, hospitalized adult cases of HF in all hospitals within the Ninohe district were registered for 3 years.... |
8,802 | Porcine defibrillation thresholds with chopped biphasic truncated exponential waveforms. | Conventional biphasic truncated exponential (BTE) waveforms have been studied extensively but less is known about "chopping modulated" BTE shocks. Previous studies comparing chopped and unchopped waveforms have found conflicting results. This study compared the defibrillation thresholds (DFTs) of a variety of chopped a... |
8,803 | Do statins have an antiarrhythmic activity? | Sudden cardiac death, which is mainly associated with the presence of life-threatening ventricular arrhythmias, is a common 'killer' among patients with coronary artery disease. Moreover, atrial fibrillation is the most common arrhythmia encountered in the clinical practice. The beneficial effect of statins on cardiova... |
8,804 | Mitral regurgitation complicates postoperative outcome of noncardiac surgery. | Whether and how mitral regurgitation impacts perioperative outcome of noncardiac surgery remains unclear.</AbstractText>From November 1999 to August 2004, all patients undergoing noncardiac operations and ever examined by echocardiography within prior 12 months were screened. Those with moderate-severe or severe mitral... |
8,805 | Exercise capacity in atrial fibrillation: a substudy of the Sotalol-Amiodarone Atrial Fibrillation Efficacy Trial (SAFE-T). | Therapy for chronic atrial fibrillation (AF) focuses on rate versus rhythm control, but little is known about the effects of common therapeutic interventions on exercise tolerance in AF.</AbstractText>Six hundred fifty-five patients with chronic AF underwent maximal exercise testing at baseline and 8 weeks, 6 months, a... |
8,806 | Comparative study between DD-HMM and RBF in ventricular tachycardia and ventricular fibrillation recognition. | This paper deals with automatic recognition of cardiac arrhythmias that require immediate electrical defibrillation therapy (ventricular fibrillation and ventricular tachycardia), through ECG (electrocardiogram) samples. The DD-HMM (discrete density hidden Markov model) and RBF (radial basis function) neural network al... |
8,807 | Primary percutaneous coronary intervention and mild induced hypothermia in comatose survivors of ventricular fibrillation with ST-elevation acute myocardial infarction. | Primary percutaneous coronary intervention (PCI) is the preferred reperfusion strategy for ST-elevation acute myocardial infarction (STEMI). In comatose survivors of cardiac arrest, mild induced hypothermia (MIH) improves neurological recovery. In the present study, we investigated feasibility and safety of combining p... |
8,808 | Effects of the application of erythropoietin on cerebral recovery after cardiac arrest in rats. | After transient global cerebral ischaemia, selectively vulnerable areas of the brain show delayed neuronal degeneration. Recent data have demonstrated potent neuroprotective effects of the application of growth hormones like erythropoietin (EPO) after focal cerebral ischaemia. In order to assess possible effects of the... |
8,809 | Pulmonary venous flow assessed by Doppler echocardiography in the management of atrial fibrillation. | Pulmonary venous blood flow (PVF) visualized by Doppler echocardiography exhibits a pulsatile behavior, which is related to left atrial pressure and function, mitral valve function, and left ventricular compliance. In atrial fibrillation (AF), the disappearance of atrial reverse flow, a decrease in systolic flow with a... |
8,810 | Usefulness of the brain natriuretic peptide to atrial natriuretic peptide ratio in determining the severity of mitral regurgitation. | Atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) levels were characterized in subjects with mitral regurgitation (MR).</AbstractText>Sixty-two cases of moderate or severe chronic MR were studied. The blood levels of neurohormonal factors were stratified by the known MR prognostic factors of New York... |
8,811 | Continuous passive oxygen insufflation results in a similar outcome to positive pressure ventilation in a swine model of out-of-hospital ventricular fibrillation. | The deleterious effects of positive pressure ventilation may be prevented by substituting passive oxygen insufflation during advanced cardiac life support (ACLS) cardiopulmonary resuscitation (CPR).</AbstractText>We compared 24-h neurologically normal survival among three different ventilation scenarios for ACLS in a r... |
8,812 | Effects of a self-care program on the health-related quality of life of pacemaker patients: a nursing intervention study. | An experimental, multi-centre, randomized study with a nurse-led intervention was conducted with the aim of evaluating the effects on HRQoL of a 10-month self-care program for pacemaker patients. In the present study, there were no significant differences in HRQoL when comparisons were made between the experimental gro... |
8,813 | Cardiologic and neuromuscular co-morbidity influences mortality of patients with left ventricular hypertrabeculation/noncompaction: comparison with the Austrian general population. | Left ventricular hypertrabeculation/noncompaction (LVHT) is characterized by prominent trabeculations and intertrabecular recesses. LVHT patients suffer from heart failure, arrhythmias, chest pain and neuromuscular disorders (NMD). Data about long-term prognosis of LVHT are controversial. The aim of the study was to co... |
8,814 | Alimentary lipemia enhances procoagulatory effects of inflammation in patients with a history of acute myocardial infarction complicated by ventricular fibrillation. | Acute myocardial infarction, often occurring postprandially, can be complicated by ventricular fibrillation. The role of acute alimentary lipemia and inflammation in the occurrence of ventricular arrhythmias in acute myocardial infarction has not been described yet.</AbstractText>Before and 2 h after consumption of a d... |
8,815 | Incidence of early adverse events surrounding direct current cardioversion of persistent atrial fibrillation. A cohort study of practices. | To establish the incidence of early adverse events surrounding direct current (DC) cardioversion of persistent atrial fibrillation in an unselected patient cohort and to describe and analyse these complications.</AbstractText>Prospective study over a three-month period (February, March and April 2000). Outcome measures... |
8,816 | Brain natriuretic peptide detects cardiac abnormalities in mass screening. | Plasma brain natriuretic peptide (BNP) is elevated in asymptomatic patients with various cardiac abnormalities. We tested the hypothesis that measuring BNP is useful for detecting asymptomatic patients with cardiac abnormalities who are not identified by conventional health check-up programmes.</AbstractText>From 2001 ... |
8,817 | The worldwide social burden of atrial fibrillation: what should be done and where do we go? | Atrial fibrillation represents the most common arrhythmia in clinical practice and is associated with poor clinical outcome. Due to the aging of the population, the number of patients with atrial fibrillation will increase approximately 2.5-fold by the year 2050. Comparison studies between rhythm control and rate contr... |
8,818 | Comparison of ventricular arrhythmia burden, therapeutic interventions, and survival, in patients < 75 and patients >or= 75 years of age treated with implantable cardioverter defibrillators. | Implantable cardioverter defibrillators (ICD) reduce arrhythmic mortality in a wide range of patients with poor left ventricular (LV) function. However, whether ICD therapy is equally effective in younger and older patients remains uncertain. To address this question, we compared ICD-documented ventricular tachyarrhyth... |
8,819 | Antihypoxic, cardioprotective, and antifibrillation effects of a combined adaptogenic plant preparation. | The course of treatment with combined adaptogenic plant preparation Tonizid improved mouse survival under conditions of hypobaric hypoxia and reduced the necrotic zone/risk zone ratio during ischemia and reperfusion in rats under conditions of artificial ventilation. The test preparation decreased the size of the necro... |
8,820 | Abolition of reperfusion-induced arrhythmias in hearts from thiamine-deficient rats. | Extensive work has been done regarding the impact of thiamine deprivation on the nervous system. In cardiac tissue, chronic thiamine deficiency is described to cause changes in the myocardium that can be associated with arrhythmias. However, compared with the brain, very little is known about the effects of thiamine de... |
8,821 | Cardiac sympathetic nerve activity and ventricular fibrillation during acute myocardial infarction in a conscious sheep model. | The association between cardiac sympathetic nerve activity (CSNA) and ventricular fibrillation (VF) during acute myocardial infarction (MI) has not been assessed in conscious animal models. During the first 60 min post-MI, mean blood pressure (MBP), heart rate (HR), and CSNA were recorded continuously in 20 conscious s... |
8,822 | Optical mapping of Langendorff-perfused human hearts: establishing a model for the study of ventricular fibrillation in humans. | Our objective was to establish a novel model for the study of ventricular fibrillation (VF) in humans. We adopted the established techniques of optical mapping to human ventricles for the first time to determine whether human VF is the result of wave breaks and singularity point formation and is maintained by high-freq... |
8,823 | Estimation of the duration of ventricular fibrillation using ECG single feature analysis. | The duration of untreated ventricular fibrillation (VF) is of paramount importance for CPR success. Moreover, therapeutic interventions taking into account the interval between cardiac arrest onset and initiation of CPR improve outcome. This study was performed to investigate whether VF feature analysis could be used t... |
8,824 | Transient ventricular fibrillation and myosin heavy chain isoform profile. | The present paper deals with spontaneous ventricular defibrillation in mammals and the possibility to facilitate its occurrence. Clinical and experimental evidence suggest that in the majority of cases, ventricular fibrillation (VF) is permanent, requiring defibrillation by electric shock. However, a growing number of ... |
8,825 | Aborted sudden cardiac death revealing isolated noncompaction of the left ventricle in a patient with wolff-Parkinson-white syndrome. | Isolated noncompaction of the left ventricle (INLV) is a rare congenital disorder associated with multiple cardiac arrhythmias. We report a case of INLV revealed by ventricular fibrillation in a patient with Wolff-Parkinson-White syndrome. Because of the persistence of inducible ventricular arrhythmias after ablation o... |
8,826 | Mapping and ablation of trigger premature ventricular contractions in a case of electrical storm associated with ischemic cardiomyopathy. | We report a case of polymorphic ventricular tachycardia and ventricular fibrillation (PVT/VF) storm associated with ischemic cardiomyopathy (ICM). The electrocardiogram (ECG) monitor revealed frequent premature ventricular contractions (PVCs) initiated PVT/VF. Electroanatomic mapping revealed the plausible origins of P... |
8,827 | Selective myocardial isolation and ventricular fibrillation. | Few experimental studies have analyzed the effects of selective radiofrequency (RF) lesions upon ventricular fibrillation (VF). The RF-induced isolation of selected zones would make it possible to determine whether these zones are essential for existence of the arrhythmia.</AbstractText>In 31 Langendorff-perfused rabbi... |
8,828 | [Clinical application of brain hypothermia therapy for acute brain insults]. | Brain hypothermia therapy has been expected to lead to good neurological outcome in acute brain insults. There are a few positive results which have been proven by multicenter randomized clinical trials (RCT) in the cardiopulmonary arrest (CPA) in patients with ventricular fibrillation. Among these clinical trials, ear... |
8,829 | ALCAPA, a possible reason for mitral insufficiency and heart failure in young patients. | ALCAPA, anomalous origin of the left coronary artery from the pulmonary artery is a rare congenital disease. We have from 1990 to 2003 operated on seven patients in our clinic. The objective of this study was to describe our experience of treating the condition and to remind other doctors of it as a possible diagnosis.... |
8,830 | Effects of the association of dual-site dynamic atrial overdrive and atenolol in preventing recurrent atrial fibrillation. | Evaluate the effects of optimized atrial stimulation--OAS (dual-site atrial pacing, heart rate above the intrinsic rate, and specific functional algorithm), and the use of atenolol in preventing recurrent atrial fibrillation (AF). Primary endpoint: to quantify the rate of AF episodes. Secondary endpoints: assessment of... |
8,831 | Unusual etiology of acute lung injury in a patient with acute myocardial infarction. | The known etiology of acute lung injury (ALI) is immensely varied and includes severe burns and trauma. Electrical and multiple defibrillation shocks can cause cutaneous burns and blunt chest trauma. The literature contains no reference to the association between ALI and cutaneous burns or blunt chest trauma secondary ... |
8,832 | Gap junctional uncoupling plays a trigger role in the antiarrhythmic effect of ischaemic preconditioning. | The aim of this study was to determine whether uncoupling of gap junctions (GJ) prior to ischaemia would modify the antiarrhythmic effect of ischaemic preconditioning (PC) in a canine model of ischaemia/reperfusion.</AbstractText>Twenty control dogs, anaesthetised with chloralose and urethane, were thoracotomised and s... |
8,833 | Prevalence of markers of heart failure in patients with atrial fibrillation and the effects of ximelagatran compared to warfarin on the incidence of morbid and fatal events: a report from the SPORTIF III and V trials. | Patients with atrial fibrillation (AF) who also have heart failure have a worse outcome but the diagnosis of heart failure is often missed.</AbstractText>To compare the effects of warfarin and ximelagatran on morbidity and mortality in patients with AF with and without markers of heart failure.</AbstractText>Data for 7... |
8,834 | Retrograde flush following topical cooling is superior to preserve the non-heart-beating donor lung. | The use of non-heart-beating donors (NHBD) has been propagated as an alternative to overcome the scarcity of pulmonary grafts. Formation of microthrombi after circulatory arrest, however, is a major concern for the development of reperfusion injury. We looked at the effect and the best route of pulmonary flush followin... |
8,835 | Drug administration in animal studies of cardiac arrest does not reflect human clinical experience. | To date, there is no evidence showing a benefit from any advanced cardiac life support (ACLS) medication in out-of-hospital cardiac arrest (OOHCA), despite animal data to the contrary. One explanation may be a difference in the time to first drug administration. Our previous work has shown the mean time to first drug a... |
8,836 | Spiral-wave dynamics depend sensitively on inhomogeneities in mathematical models of ventricular tissue. | Every sixth death in industrialized countries occurs because of cardiac arrhythmias such as ventricular tachycardia (VT) and ventricular fibrillation (VF). There is growing consensus that VT is associated with an unbroken spiral wave of electrical activation on cardiac tissue but VF with broken waves, spiral turbulence... |
8,837 | Method for quantifiying conduction velocity during ventricular fibrillation. | Velocity of propagation of electrical excitation in the heart is important for the understanding of complex arrhythmias such as ventricular fibrillation (VF). In this paper, we present a method to estimate the conduction velocity of electrical activation wavefronts that are defined to be a particular isovalue of any sc... |
8,838 | Prevalence of Brugada sign in patients presenting with palpitation in southern Iran. | Brugada syndrome is a cardiac channel abnormality that is associated with a high risk of ventricular fibrillation and sudden cardiac death and characterized by an electrocardiographic pattern of right bundle branch block and transient or persistent ST-segment elevation in leads V1-V3. No data regarding the frequency of... |
8,839 | Cancellation of ventricular activity in the ECG: evaluation of novel and existing methods. | Due to the much higher amplitude of the electrical activity of the ventricles in the surface electrocardiogram (ECG), its cancellation is crucial for the analysis and characterization of atrial fibrillation. In this paper, two different methods are proposed for this cancellation. The first one is an average beat subtra... |
8,840 | Taser dart-to-heart distance that causes ventricular fibrillation in pigs. | Electromuscular incapacitating devices (EMDs), such as Tasers, deliver high current, short duration pulses that cause muscular contractions and temporarily incapacitate the human subject. Some reports suggest that EMDs can kill. To help answer the question, "Can the EMD directly cause ventricular fibrillation (VF)?", t... |
8,841 | BIPHASIC Trial: a randomized comparison of fixed lower versus escalating higher energy levels for defibrillation in out-of-hospital cardiac arrest. | There is little clear evidence as to the optimal energy levels for initial and subsequent shocks in biphasic waveform defibrillation. The present study compared fixed lower- and escalating higher-energy regimens for out-of-hospital cardiac arrest.</AbstractText>The Randomized Controlled Trial to Compare Fixed Versus Es... |
8,842 | [Arrhythmias and cardiac electrophysiology]. | In the past few months, numerous articles have been published on arrhythmias and cardiac electrophysiology. As in previous years, a substantial proportion of researchers have concentrated on atrial fibrillation, both on catheter ablation of chronic and paroxysmal atrial fibrillation and on the development of new approa... |
8,843 | [Coronary revascularization in patients with preoperative electrical storm]. | We report 5 cases who underwent surgical coronary revascularization for subacute myocardial ischemia with preoperative electrical storm. All patients showed severe left ventricular dysfunction. Mean ejection fraction was 24.4 +/- 7.6%. Three patients had already had implantable cardioverter-defibrillator (ICD) therapy.... |
8,844 | Acute pancreatitis and amiodarone: a case report. | Amiodarone, a class III antiarrhythmic drug, is one of the most effective drugs used in the treatment of ventricular and paroxysmal supraventricular tachyarrhythmia. Adverse effects of amiodarone including pulmonary toxicity, hepatotoxicity, aggravation of arrhythmia, and thyroid diseases are well understood. A 66-year... |
8,845 | Automatic implantable cardioverter defibrillator for the treatment of ventricular fibrillation following coronary artery spasm: a case report. | Coronary artery spasm is an infrequently recognized condition that causes Prinzmetal's angina and specific electrocardiographic changes. A 50-year-old man who suffered a spontaneously aborted acute inferior myocardial infarction is presented. He underwent cardiac catheterization, which initially showed a normal coronar... |
8,846 | Evaluation of chest barriers for protection against sudden death due to commotio cordis. | Blunt precordial blows triggering ventricular fibrillation (commotio cordis) represent a leading cause of sudden death in young athletes. Attention has focused on the primary prevention of these tragedies with chest barriers. The U.S. Commotio Cordis Registry was accessed to determine the likelihood of sudden death in ... |
8,847 | Major adverse cardiac events during endurance sports. | Major adverse cardiac events in endurance exercise are usually due to underlying and unsuspected heart disease. The investigators present an analysis of major adverse cardiac events that occurred during 2 consecutive annual long distance races (a 36-km beach cycling race and a 21-km half marathon) over the past 5 years... |
8,848 | Prognostic significance of exercise induced arrhythmias and echocardiographic variables in hypertrophic cardiomyopathy. | Hypertrophic cardiomyopathy (HC) often presents with exercise-induced symptoms, including arrhythmias and sudden death. The investigators prospectively studied whether exercise testing is associated with immediate complications and if stress-induced arrhythmias and echocardiographic variables are associated with long-t... |
8,849 | Relationship between sympathetic nerve sprouting and repolarization dispersion at peri-infarct zone after myocardial infarction. | Sympathetic nerve sprouting is thought to contribute to sudden cardiac death (SCD) in chronic myocardial infarction (MI). However, the mechanisms remain unclear. This study investigated the relationship between sympathetic nerve sprouting and repolarization dispersion at peri-infarct zones after MI. Thirty adult New Ze... |
8,850 | Mitral regurgitation: determinants of referral for cardiac surgery by Canadian cardiologists. | Advances in surgery permit for earlier intervention with improved outcomes for patients with mitral regurgitation (MR). Many patients still appear to be referred to surgery late in their course. Consensus guidelines were compared with the surgical referral practices for MR among Canadian cardiologists.</AbstractText>A ... |
8,851 | Effect of diltiazem and metoprolol on left atrial appendix functions in patients with nonvalvular chronic atrial fibrillation. | Thrombo-embolic events are the important cause of mortality and morbidity in patients with chronic atrial fibrillation (CAF). The origin of thromboembolism is often the left atrial appendix (LAA). Flow rate velocity (FRV) inside the LAA is the major determinant of thrombus formation. The aim of our study was to investi... |
8,852 | Interpretation of B-type natriuretic peptide in cardiac disease and other comorbid conditions. | B-Type natriuretic peptide (BNP) is elevated in states of increased ventricular wall stress. BNP is most commonly used to rule out congestive heart failure (CHF) in dyspneic patients. BNP levels are influenced by age, gender and, to a surprisingly large extent, by body mass index (BMI). In addition, it can be elevated ... |
8,853 | Brugada-like electrocardiographic pattern and ventricular fibrillation in a patient with primary hyperparathyroidism. | There are several causes for ST segment abnormalities in leads V1 to V3. Hypercalcaemia and Brugada syndrome are among them. Both are known to produce ventricular arrhythmia, albeit only rare cases have been reported with documented evidence of ventricular arrhythmias in association with a hypercalcaemic crisis but non... |
8,854 | [B-type natriuretic hormone--diagnostic and prognostic cardiovascular biomarker]. | Brain natriuretic hormone and N-terminal-probrain natriuretic hormone are equally important cardiovascular biomarkers. Moderately increased brain natriuretic hormone level is a reliable predictor of preclinical, asymptomatic left ventricular dysfunction. Low brain natriuretic hormone levels are extensively used to rule... |
8,855 | Electrophysiologic manifestations of ventricular tachyarrhythmias provoking appropriate defibrillator interventions in high-risk patients with hypertrophic cardiomyopathy. | Our objective was to determine features of ventricular tachyarrhythmias triggering appropriate implantable cardioverter-defibrillator (ICD) interventions in hypertrophic cardiomyopathy (HCM).</AbstractText>The study cohort was 68 high-risk HCM patients who received ICDs for primary sudden cardiac death prevention from ... |
8,856 | Detection of intramyocardial scroll waves using absorptive transillumination imaging. | Optical imaging using voltage-sensitive dyes has become an important tool for studying vortex-like electrical waves in the heart. Such waves, known as spiral or scroll waves, can spontaneously form in pathological ventricular myocardium, causing ventricular fibrillation and sudden death. Until recently, observations of... |
8,857 | Pravastatin inhibits arrhythmias induced by coronary artery ischemia in anesthetized rats. | We have reported that chronically administered pravastatin prevented coronary artery reperfusion-induced lethal ventricular fibrillation (VF) in anesthetized rats without lowering the serum cholesterol level. The present study was undertaken to evaluate whether pravastatin prevents ischemia-induced lethal VF, simultane... |
8,858 | Addendum to "Personal and Public Safety Issues Related to Arrhythmias That May Affect Consciousness: Implications for Regulation and Physician Recommendations. A medical/scientific statement from the American Heart Association and the North American Society of Pacing and Electrophysiology". Public safety issues in pati... | In 1996, the American Heart Association developed a scientific statement entitled "Personal and Public Safety Issues Related to Arrhythmias That May Affect Consciousness: Implications for Regulation and Physician Recommendations." Since then, multiple trials have established the role of implantable cardioverter-defibri... |
8,859 | Electrophysiologic characteristics of anger-triggered arrhythmias. | Anger can precipitate ventricular arrhythmias in patients with implantable cardioverter-defibrillators (ICDs). Determining electrophysiologic characteristics of anger-triggered arrhythmias may help elucidate the mechanisms that link emotion and arrhythmia.</AbstractText>We sought to compare the morphology and initiatio... |
8,860 | Do we need pharmacological therapy for atrial fibrillation in the ablation era? | Management of atrial fibrillation (AF) remains one of the most difficult problems of modern cardiology. Pharmacological antiarrhythmic therapy is used both for termination of episodes of AF and for prevention of AF recurrences. Recently, major trials have compared the strategy of maintenance of sinus rhythm, called rhy... |
8,861 | Obesity as a risk factor for sustained ventricular tachyarrhythmias in MADIT II patients. | Obesity, as defined by body mass index > or =30 kg/m(2), has been shown to be a risk factor for cardiovascular disease. However, data on the relationship between body mass index (BMI) and the risk of ventricular arrhythmias and sudden cardiac death are limited. The aim of this study was to evaluate the risk of ventr... |
8,862 | Atrial fibrillation and plasma troponin I elevation after cardiac surgery: relation to inflammation-associated parameters. | Recent studies have demonstrated correlation between inflammation to plasma troponin (cTnI) levels elevation and atrial fibrillation (AF) in noncardiac surgery settings. The goal of this prospective study was to examine the relation between inflammation associated parameters (IAPs) to post cardiac surgery cTnI elevatio... |
8,863 | Using the upper limit of vulnerability to assess defibrillation efficacy at implantation of ICDs. | The upper limit of vulnerability (ULV) is the weakest shock strength at or above which ventricular fibrillation (VF) is not induced when the shock is delivered during the vulnerable period. The ULV, a measurement made in regular rhythm, provides an estimate of the minimum shock strength required for reliable defibrilla... |
8,864 | Effect of programmed number of intervals to detect ventricular fibrillation on implantable cardioverter-defibrillator aborted and unnecessary shocks. | Detection of self-terminating arrhythmias by implantable cardioverter-defibrillators (ICDs) causes unnecessary battery depletion and unnecessary shocks. Our goal was to estimate the effect of the programmed number of intervals to detect (NID) ventricular fibrillation (VF) on ICD temporal episode rate, unnecessary shock... |
8,865 | Ineffectiveness of precordial thump for cardioversion of malignant ventricular tachyarrhythmias. | The Precordial Thump (PT) is commonly used for cardiopulmonary resuscitations both in and out of hospitals. However, the support for its efficiency relies mainly on sporadic cases. In this current prospective large study, we tested the effectiveness and safety of PT in a wide range of malignant ventricular tachyarrhyth... |
8,866 | Atrial, SA nodal, and AV nodal electrophysiology in standing horses: normal findings and electrophysiologic effects of quinidine and diltiazem. | Although atrial arrhythmias are clinically important in horses, atrial electrophysiology has been incompletely studied.</AbstractText>Standard electrophysiologic methods can be used to study drug effects in horses. Specifically, the effects of diltiazem on atrioventricular (AV) nodal conduction are rate-dependent and a... |
8,867 | Atrial fibrillation after non-cardiac surgery: P-wave characteristics and Holter monitoring in risk assessment. | We investigated the role of 12-lead ECG P-wave duration and dispersion and of Holter monitoring as predictors of post-thoracic surgery atrial fibrillation.</AbstractText>One hundred and five consecutive patients (88 males-17 females; age 60+/-9), undergoing thoracic surgery at National Cancer Institute between 2001 and... |
8,868 | Medical management of atrial fibrillation: future directions. | Atrial fibrillation is the most common arrhythmia that requires treatment, and although ablation is appropriate in many cases, anti-arrhythmic drug therapy remains the first and most appropriate therapy in most patients. Currently available antiarrhythmic drugs are limited by modest efficacy and significant toxicity. C... |
8,869 | Pacing therapy for prevention of atrial fibrillation. | The role of permanent pacing for the prevention of atrial fibrillation is reviewed. A moderate decrease in the incidence of acute and chronic atrial fibrillation has been seen with atrial pacing compared with ventricular pacing, especially in patients with sinus node dysfunction based on a meta-analysis of clinical tri... |
8,870 | Mapping and ablation of left atrial tachycardias occurring after atrial fibrillation ablation. | Regular left atrial tachycardias are a frequent complication of atrial fibrillation ablation procedures. The arrhythmia mechanism appears to be due to focal pulmonary vein reentry in patients who undergo only electrically guided pulmonary vein isolation. The most common site of origin is the septal and inferior aspect ... |
8,871 | Intracardiac atrial defibrillation. | Intravascular ventricular defibrillation and intravascular atrial defibrillation have many similarities. An important factor influencing the outcome of the shock is the potential gradient field created throughout the ventricles or the atria by the shock. A minimum potential gradient is required throughout the ventricle... |
8,872 | Isolated left ventricular noncompaction in association with rheumatic mitral stenosis. | Fifty year old man with a known case of chronic rheumatic heart disease with atrial fibrillation was presented with severe mitral stenosis. He was incidentally detected to have noncompaction of left ventricle on echocardiography and Doppler examination. He underwent successful percutaneous trans-luminal mitral commissu... |
8,873 | The role of gender and sex hormones in ischemic-reperfusion injury in isolated rat hearts. | To establish potential anti-ischemic effects of testosterone and estradiol on myocardium we used isolated rat hearts in accordance with Langendorff, exposed to 40 min of ischemia and reperfusion. Rats were pretreated for 10 days, males with testosterone and females with estradiol and injuries from those hearts were com... |
8,874 | Open source model for generating RR intervals in atrial fibrillation and beyond. | Realistic modeling of cardiac inter-beat (RR) intervals is highly desirable for basic research in cardiac electrophysiology, clinical management of heart diseases, and developing signal processing tools for ECG analysis.</AbstractText>We present an open source computer model that is capable to generate realistic time s... |
8,875 | Ventricular fibrillation frequency characteristics are altered in acute myocardial infarction. | Future automated external defibrillators are being designed to direct rescue efforts (chest compressions first vs. defibrillation) by inferring the duration of ventricular fibrillation based on its waveform characteristics such as frequency content. This approach assumes that the ventricular fibrillation waveform is an... |
8,876 | [Time-frequency analysis of ventricular fibrillation and the effects of amiodarone]. | This study is to quantify time-varying dominant frequencies in electrocardiogram (ECG) during the ventricular fibrillation (VF). Orthogonal ECG (sagittal, x; transverse, y; and longitudinal, z) and the transvenous two-leads defibrillation systems were set in 19 dogs. Time-frequency analysis was used to assess changes i... |
8,877 | Outcome of pharmacological rhythm control for new-onset persistent atrial fibrillation in patients with systolic heart failure: a comparison with patients with normal left ventricular function. | To compare outcome of a serial cardioversion strategy in atrial fibrillation (AF) patients with and without systolic heart failure (HF).</AbstractText>In patients with new-onset persistent AF and systolic HF [left ventricular ejection fraction (LVEF) <0.40] outcome of a serial electrical cardioversion (ECV) and seri... |
8,878 | Examination of research trends on patient factors in patients with implantable cardioverter defibrillators. | The implantable cardioverter defibrillator (ICD) is the most effective treatment available for terminating potentially life-threatening ventricular tachycardia and ventricular fibrillation and reducing the risk of mortality. Despite its established health benefits, ICD therapy is accompanied by a unique array of patien... |
8,879 | A phase II study of capecitabine and irinotecan in combination with concurrent pelvic radiotherapy (CapIri-RT) as neoadjuvant treatment of locally advanced rectal cancer. | We sought to evaluate the efficacy and safety data of a combination regimen using weekly irinotecan in combination with capecitabine and concurrent radiotherapy (CapIri-RT) as neoadjuvant treatment in rectal cancer in a phase-II trial. Patients with rectal cancer clinical stages T3/4 Nx or N+ were recruited to receive ... |
8,880 | Subclinical atherosclerosis and risk of atrial fibrillation: the rotterdam study. | Myocardial infarction is an important risk factor for atrial fibrillation, but the role of subclinical atherosclerosis is unknown. This longitudinal study evaluates whether atherosclerosis affects the risk of atrial fibrillation in persons without overt coronary disease.</AbstractText>This investigation was part of the... |
8,881 | Resuscitation from transfusion-associated hyperkalaemic ventricular fibrillation. | Evidence to guide resuscitation from transfusion-related hyperkalaemic ventricular fibrillation is sparse. This case report describes a 29 kg patient undergoing scoliosis surgery who developed hyperkalaemic ventricular tachycardia/fibrillation following the replacement of over two blood volumes with banked blood in 90 ... |
8,882 | Development of congestive heart failure in Japanese patients with atrial fibrillation. | Atrial fibrillation (AF) and congestive heart failure (CHF) are frequently coexistent, but their temporal relationship in Japanese patients is unclear.</AbstractText>248 AF patients (63.6+/-10.0 years old) without a history of CHF were enrolled for analysis of the development of CHF during the follow-up period of 49.7+... |
8,883 | Dose-response effect of flecainide in patients with symptomatic paroxysmal atrial fibrillation and/or flutter monitored with trans-telephonic electrocardiography: a multicenter, placebo-controlled, double-blind trial. | A double-blind, randomized, parallel-group, placebo-controlled trial was conducted in patients with paroxysmal atrial fibrillation or flutter (PAF/PAFL) experiencing 2 or more episodes of symptomatic PAF/PAFL during a 28-day observation period to determine the dose-response effect and safety of flecainide.</AbstractTex... |
8,884 | Blood pressure and estimated risk of stroke in the elderly population of Spain: the PREV-ICTUS study. | The objective of this study was to estimate the high blood pressure values and the 10-year risk of stroke in the Spanish general population aged 60 years or older using the Framingham scale.</AbstractText>This was a multicenter, population-based, cross-sectional study performed in Spanish primary care centers. A random... |
8,885 | Co-ordinated intra-abdominal and intra-thoracic pressures regulate cough assisted cardiac circulatory support. | Periodically case studies emerge that demonstrate voluntary and forced coughing in ventricular fibrillation or asystole can maintain consciousness for up to 100 s. Forced cough is effective in producing co-ordinated abdominal muscle contraction and increases in intra-abdominal and thoracic pressures. These co-ordinated... |
8,886 | Beneficial effects of carbon monoxide-releasing molecules on post-ischemic myocardial recovery. | There is increasing evidence corroborating a protective role of carbon monoxide releasing molecules (CORMs) in injured tissues. Carbon monoxide (CO) carriers have been recently developed as a pharmacological tool to simulate the effect of heme oxygenase-1-derived CO. The effects of CORM-3, a water-soluble CO releaser, ... |
8,887 | Causes of errors in the electrocardiographic diagnosis of atrial fibrillation by physicians. | The emphasis of most large studies has been placed on the treatment and prevention of atrial fibrillation (AF) and its complications. Little is known about the accuracy of physicians in the electrocardiographic (ECG) diagnosis of AF and the possible causes of the diagnostic errors.</AbstractText>Over a period of 10 mon... |
8,888 | Irregularity test for very short electrocardiogram (ECG) signals as a method for predicting a successful defibrillation in patients with ventricular fibrillation. | A significant proportion of patients with ventricular fibrillation (VF) can only be defibrillated after a period of chest compressions and ventilation before the defibrillation attempt. In these patients, unsuccessful defibrillations increase the duration of heart arrest and reduce the possibility of a successful resus... |
8,889 | Valsartan in the treatment of heart attack survivors. | Survivors of myocardial infarction (MI) are at high risk of disability and death. This is due to infarct-related complications such as heart failure, cardiac remodeling with progressive ventricular dilation, dysfunction, and hypertrophy, and arrhythmias including ventricular and atrial fibrillation. Angiotensin (Ang) I... |
8,890 | [Sudden cardiac death: epidemiology and modern therapy]. | Sudden Cardiac Death (SCD) has become an important public health challenge in the Western World. In Switzerland near 10,000 people suffer each year from SCD. The survival from SCD to hospital discharge is discouraging (near 5%). Large majority of events occur unexpectedly in the out-of-hospital environment and are not ... |
8,891 | Transvenous cardioverter-defibrillator implantation in a patient with tricuspid mechanical prosthesis. | A 64-year-old woman was referred to our center because of poorly tolerated ventricular tachycardia (VT) at 210 bpm due to an old myocardial infarction. The patient had been operated on at age of 20 for mitral valve commissurolysis, at age of 49 for ductal carcinoma, at age of 56 for mitral valve replacement, and at age... |
8,892 | Fatal inappropriate ICD shock. | Inappropriate implantable cardioverter defibrillator (ICD) therapy carries a low but relevant risk of ventricular proarrhythmia. In the present case, the extremely rare event of a fatal arrhythmia caused by inappropriate therapy is reported. Dislodgement of the ventricular lead to the level of the tricuspid annulus led... |
8,893 | Enterovirus-associated hemophagocytic syndrome in children with malignancy: report of three cases and review of the literature. | Enteroviruses can cause severe manifestations in children with malignancy. Infection-associated hemophagocytic syndrome (IAHS) due to enterovirus is a rare entity in children. Patients with malignancy and IAHS due to enterovirus were retrospectively evaluated at the University of Athens' Hematology-Oncology pediatric u... |
8,894 | The use of protamine after radiofrequency catheter ablation: a pilot study. | Evaluate the effect of administering intravenous protamine immediately post-radiofrequency catheter ablation (RFCA) on thrombotic and bleeding complications in heparinized patients.</AbstractText>Heparinized patients that had RFCA for atrial or ventricular arrhythmias at our institution between January 2001 and March 2... |
8,895 | Prognostic value of location and type of myocardial infarction in the setting of advanced left ventricular dysfunction. | Location (anterior) and type (Q wave) of myocardial infarction (MI) might be considered of prognostic significance when predicting mortality. However, there are limited data regarding the prognostic significance of type and location of MI in patients with severely depressed left ventricular function. In 1,221 patients ... |
8,896 | Different roles of nitric oxide synthase isoforms in cardiopulmonary resuscitation in pigs. | The purpose of the present study was to identify the roles of the three nitric oxide synthase (NOS) isoforms on whole body ischemia-reperfusion injury during cardiopulmonary resuscitation (CPR) with periodic acceleration (pGz) in pigs. Thirty-two anesthetized pigs (27.6+/-3.4 kg) were monitored for hemodynamics and sel... |
8,897 | Management of dofetilide overdose in a patient with known cocaine abuse. | Dofetilide, a class III antiarrhythmic agent, is prescribed for conversion to and maintenance of normal sinus rhythm in patients with persistent atrial fibrillation or atrial flutter. Most antiarrhythmics have significant toxicities such as torsade de pointes, and patients should be closely monitored while receiving an... |
8,898 | Improvement of quality of life after percutaneous balloon mitral valvulotomy in patients with mitral stenosis: does rhythm matter? | Limited data are available on the effect of percutaneous balloon mitral valvulotomy (PBMV) on quality of life (QoL) in patients with mitral stenosis (MS), and whether the effect is similar between patients in sinus rhythm (SR) and with atrial fibrillation (AF). The study aim was to determine the effect of PBMV on the Q... |
8,899 | Postoperative outcome after coronary artery bypass grafting in chronic obstructive pulmonary disease. | It is uncertain if the presence and severity of airflow obstruction in chronic obstructive pulmonary disease (COPD) is predictive of surgical morbidity and mortality after coronary artery bypass grafting (CABG).</AbstractText>Retrospective study of patients who underwent CABG between 1998 and 2003 in a university-affil... |
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