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0 | The effect of amiodarone pretreatment on survival of mice with cocaine toxicity. | Cocaine is a common drug of abuse and use has been associated with ventricular dysrhythmias. Published guidelines suggest that amiodarone is the first line antidysrhythmic for ventricular tachycardia and fibrillation. However, the effects amiodarone in the setting of cocaine toxicity are unknown and unstudied. The purp... |
1 | Atenolol premedication in patients undergoing closed mitral commissurotomy. | Perioperative tachycardia is common in patients undergoing surgery. In patients with mitral valve stenosis, the tachycardia can precipitate congestive heart failure and pulmonary oedema. Efficacy of atenolol premedication (0.5 mg/kg) for haemodynamic stability was assessed in 37 patients undergoing closed mitral commis... |
2 | Comparison of the immediate post-operative outcome of two different myocardial protection strategies: antegrade-retrograde cold St Thomas blood cardioplegia versus intermittent cross-clamp fibrillation. | The objective of this study was to compare the immediate post-operative outcome of two myocardial protection strategies. Data of consecutive elective first time coronary artery bypass grafting (CABG) were analysed: Group A (n=671, antegrade-retrograde cold St Thomas blood cardioplegia) and Group B (n=783, intermittent ... |
3 | Combined mitral valve repair, LVOT myectomy and left atrial cryoablation therapy. | Asymmetric septal hypertrophy (ASH) is a common cause of left ventricular (LV) outflow tract obstruction. Mitral valve (MV) regurgitation is present in 30% of those patients as well as biatrial enlargement. Furthermore, paroxysmal or chronic atrial fibrillation (AF) occurs in up to 22%. Two male patients were admitted ... |
4 | A huge pseudoaneurysm of the left ventricle after simple gluing of an oozing-type postinfarction rupture. | Left ventricular free wall rupture is a major complication after myocardial infarction. Simple gluing for a rupture site, without a cardiopulmonary bypass, has been reported useful.</AbstractText>We experienced a left ventricular pseudoaneurysm, of 8 cm in size, emerging at a previous rupture site 1 year after gluing w... |
5 | Microwave ablation of atrial fibrillation in conjunction with treatment of early postoperative massive left atrial thrombosis. | Left atrial thrombosis is a rare complication of both atrial fibrillation and mitral valve surgery. A patient with a massive atrial thrombosis associated with symptoms of severe heart failure is presented. Restoration of rhythmical ventricular contraction and, ultimately, atrial contractility is of great benefit for pr... |
6 | Factors affecting survival after prehospital asystolic cardiac arrest in a Basic Life Support-Defibrillation system. | Previous studies have shown a low but meaningful survival rate in cases of prehospital cardiac arrest with an initial rhythm of asystole. There may be, however, an identifiable subgroup in which resuscitation efforts are futile. This study identified potential field criteria for predicting 100% nonsurvival when the pre... |
7 | Hypothermic modulation of anoxic brain injury in adult survivors of cardiac arrest: a review of the literature and an algorithm for emergency physicians. | Anoxic brain injury is a common outcome after cardiac arrest. Despite substantial research into the pathophysiology and management of this injury, a beneficial treatment modality has not been previously identified. Recent studies show that induced hypothermia reduces mortality and improves neurological outcomes in pati... |
8 | Development of optical mapping system with real-time feedback stimulation in the heart. | Recent studies showed that electrical stimuli in the excitable gaps during ventricular fibrillation (VF) are important for defibrillation requiring low electrical energy. We developed an optical mapping system that measures action potentials and controls the timings and sites of electrical stimulus to verify the effect... |
9 | Combined Bispectral and Bicoherency approach for Catastrophic Arrhythmia Classification. | Quantitative classification of cardiac arrhythmia is an important tool in ICU and CCU that enables on line monitoring of the cardiac activities. Among fatal arrhythmias are atrial fibraliation (AF), ventricular tachycardia (VT), and ventricular fibrillation that require special algorithms for detection and so for direc... |
10 | Dose reponse behavior in a physiologically accurate defibrillation model. | Termination of an episode of ventricular fibrillation by electric countershock is a probabilistic phenomenon. In a clinical or experimental setting, defibrillation exhibits dose-response behavior. We demonstrate for the first time that a physiologically and anatomically accurate model of defibrillation is able to simul... |
11 | Intravascular parasympathetic cardiac nerve stimulation prevents ventricular arrhythmias during acute myocardial ischemia. | Although previous animal studies clearly demonstrated antiarrhythmic effects of vagal stimulation during acute myocardial ischemia, highly invasive nature of vagal stimulation limited its clinical use. Recently, intravascular parasympathetic cardiac nerve stimulation (IPS) has emerged as a novel approach to the cardiac... |
12 | 3D Heart Simulation And Recognition Of Various Events. | This paper presents a new way to solve the inverse problem of electrocardiography in terms of heart model parameters. The developed event estimation and recognition method is based on an optimization system of heart model parameters. An ANN-based preliminary ECG analyzer system has been created to reduce the searching ... |
13 | Adaptive ventricular rate smoothing during atrial fibrillation: a pilot comparison study. | An adaptive ventricular rate smoothing (VRS) algorithm is developed to regularize the ventricular rate during atrial fibrillation (AF) by means of ventricular pacing (VP). Using a quantitative AF-VP model, we conduct pilot study to compare its performance with three other VRS algorithms. Simulations show that all VRS a... |
14 | The simultaneous multiple sites epicardial mapping of ventricular fibrillation. | Some recently researches have showed that cardiac electrical activities are chaotic during ventricular fibrillation (VF) [1]. It is very difficult to realize the originations and evolvements of these complex activities by used of non-simultaneous mapping techniques. Simultaneous multiple sites epicardial mapping is one... |
15 | Modeling magnetic catheters in external fields. | We develop a mechanical model for catheters and other interventional devices which are steered by externally applied magnetic fields. Each device contains a permanent magnet near its distal tip. The external magnetostatic field, whose direction and magnitude can be selectively varied, is applied to the vicinity of the ... |
16 | A new quantitative analysis technique for cardiac arrhythmia using bispectrum and bicoherency. | Ventricular tachyarrhythmias, in particular ventricular fibrillation (VF), are the primary arrhythmic events in the majority of patients suffering from sudden cardiac death. Attention has focused upon these articular rhythms as it is recognized that prompt therapy can lead to a successful outcome. There has been consid... |
17 | Analysis of relation between coronary perfusion pressure and the extracted parameters from a ventricular fibrillation ECG signal. | This work presents an alternative return of spontaneous circulation (ROSC) estimate using indirectly induced presumption that coronary perfusion pressure (CPP) correlates with the extracted parameter from the ventricular fibrillation (VF) ECG signal. In past studies, it is revealed that successful cardiopulmonary resus... |
18 | Asymmetry in dynamics of action potential duration transition between steady states: a simulation study. | Ventricular fibrillation (VF) contributes importantly to sudden cardiac death, however, exact mechanisms of VF remain elusive. Action potential duration (APD) restitution is widely used to predict dynamics of VF. Restitution of APD is a multi-modal phenomenon, with contributions from previous diastolic intervals (DI), ... |
19 | A three phase temporal model for cardiopulmonary resuscitation following cardiac arrest. | Data from a wide variety of studies suggests that survival from cardiac arrest is very much dependent on the implementation of therapeutic maneuvers in a sequence. Emphasis is on the time from the onset of cardiac arrest to the beginning of resuscitative maneuvers. For example, the optimal timing of defibrillation in a... |
20 | Vasopressin in shock states. | There is growing evidence that in end-stage shock or during cardiac arrest, inappropriately low endogenous vasopressin plasma levels may be responsible for pathologic vasodilatation, inadequate organ perfusion, and poor outcome. The purpose of this article is to review recent publications featuring arginine vasopressin... |
21 | Pacemakers, recent directions and developments. | Pacemaker and implantable cardiovertor defibrillator utilization is evolving rapidly. Expanding indications are reviewed.</AbstractText>Current pacemakers are smaller, more dependable, longer lasting and have rate-adaptive features. Implantable cardiovertor defibrillators use transvenous leads and have advanced pacing ... |
22 | [Advanced cardiac life support in the prehospital setting in the Reykjavik area 1991-1996.]. | Since 1982 an emergency ambulance manned by a physician and two emergency medical technicians has been operated in the Reykjavik area. The physicians have followed guidelines from the American Heart Association (AHA). Until 1986 the AHA guidelines had bicarbonate and in some instances calcium as first line treatment in... |
23 | Non-pharmacological treatment of atrial fibrillation. | In selected patients with atrial fibrillation and severe symptoms, non-pharmacological treatment may be an alternative or supplement to drug therapy. Atrioventricular nodal radiofrequency ablation (requires pacemaker implantation), or atrial pacing for sick sinus syndrome, are established treatment modalities. All othe... |
24 | Current concepts on ventricular fibrillation: a vicious circle of cardiomyocyte calcium overload in the initiation, maintenance, and termination of ventricular fibrillation. | Based on recent experimental studies, this review article introduces the novel concept that cardiomyocyte Ca2+ and ventricular fibrillation (VF) are mutually related, forming a self-maintaining vicious circle in the initiation, maintenance, and termination of VF. On the one hand, elevated myocyte Ca2+ can cause delayed... |
25 | The effects of right ventricular apical pacing on left ventricular function. Stimulation of the right ventricular apex: should it still be the gold standard? | Current pacing practice is undergoing continuous and substantial changes. Initially pacing had an exclusively palliative role, since it was reserved for patients developing complete heart block or severe symptomatic bradycardia. With the appearance of novel pacing indications such as pacing for heart failure and atrial... |
26 | May fever trigger ventricular fibrillation? | The clinical precipitants of ventricular fibrillation (VF) remain poorly understood. Clinical factors such as hypoxemia, acidosis or electrolyte imbalance, drug-related toxicity, autonomic nervous system disorders as well as viral myocarditis have been proposed to be associated with sudden cardiac death particularly in... |
27 | Ventricular tachycardia in the absence of structural heart disease. | In up to 10% of patients who present with ventricular tachycardia (VT), obvious structural heart disease is not identified. In such patients, causes of ventricular arrhythmia include right ventricular outflow tract (RVOT) VT, extrasystoles, idiopathic left ventricular tachycardia (ILVT), idiopathic propranolol-sensitiv... |
28 | Role of implantable cardioverter defibrillators in the treatment of hypertrophic cardiomyopathy. | Hypertrophic cardiomyopathy (HCM) is an important cardiovascular disease with sudden cardiac death as the most devastating presentation. Implantable cardioverter defibrillators (ICD) are the optimal therapy for prevention of sudden death from ventricular tachycardia or fibrillation of any cause. While there is no contr... |
29 | Electrophysiological mechanisms of ventricular fibrillation induction. | Ventricular fibrillation (VF) is known as a main responsible cause of sudden cardiac death which claims thousands of lives each year. Although the mechanism of VF induction has been investigated for over a century, its definite mechanism is still unclear. In the past few decades, the development of new advance technolo... |
30 | Arrhythmias after tetralogy of fallot repair. | Tetralogy of Fallot is the most common cyanotic congenital heart disease, with a good outcome after total surgical correction. In spite of a low perioperative mortality and a good quality of life, late sudden death remains a significant clinical problem, mainly related to episodes of sustained ventricular tachycardia a... |
31 | Atrial fibrillation and hyperthyroidism. | Atrial fibrillation occurs in 10 - 15% of patients with hyperthyroidism. Low serum thyrotropin concentration is an independent risk factor for atrial fibrillation. Thyroid hormone contributes to arrythmogenic activity by altering the electrophysiological characteristics of atrial myocytes by shortening the action poten... |
32 | The role of biphasic shocks for transthoracic cardioversion of atrial fibrillation. | The modern generation of transthoracic defibrillators now employ impedance compensated biphasic waveforms. These new devices are superior to those with monophasic waveforms and practice is currently switching to biphasic defibrillators for the treatment of both ventricular and atrial fibrillation. However, there is no ... |
33 | Effects of endocardial microwave energy ablation. | Until recently the treatment of atrial fibrillation (AF) consisted primarily of palliation, mostly in the form of pharmacological intervention. However because of recent advances in nonpharmacologic therapies, the current expectation of patients and referring physicians is that AF will be cured, rather than palliated. ... |
34 | Automatic mode switching in atrial fibrillation. | Automatic mode switching (AMS) algorithms were designed to prevent tracking of atrial tachyarrhythmias (ATA) or other rapidly occurring signals sensed by atrial channels, thereby reducing the adverse hemodynamic and symptomatic consequences of a rapid ventricular response. The inclusion of an AMS function in most dual ... |
35 | [Use of warfarin anticoagulation in patients with atrial fibrillation in Iceland.]. | Despite convincing evidence that warfarin anticoagulation reduces the risk of thromboembolism in patients with atrial fibrillation, recent data suggests that this therapy may be underutilized. Some patients are at higher risk than others and known risk factors for thromboembolism in nonvalvular atrial fibrillation incl... |
36 | Congenital short QT syndrome. A review. | Sudden cardiac death in individuals with structurally normal hearts accounts for approximately 20% of sudden cardiac death cases. Patients in this subgroup suffer from what has been named "electrical diseases" which are gradually coming into focus as inherited ion channelopathies, diseases of anchoring proteins or of i... |
37 | [Recurrent hemoptysis following thienopyridines and amiodarone administration. therapeutic dilemma]. | The authors describe a case of a 74-year-old man with advanced coronary heart disease in whom pulmonary hemorrhagic complications during therapy with ticlopidine and subsequently with clopidogrel and amiodarone were observed. Fever and massive hemoptysis following five days of ticlopidine treatment, before elective cor... |
38 | [Value of electrocardiographic treadmill test for rate control strategy in permanent atrial fibrillation]. | of our study was to determine the correlation between physical activity tolerance assesed by exercise tolerance test (ETT) and dynamics of change of echocardiographic parameters of left atrium (LA) and left ventricle (LV) in standard transtoracic echocardiography (TTE) in long-term follow up of patients with persistent... |
39 | Antiarrhythmic activity of taurhythman. | Antiarrhythmic properties of taurhythman were demonstrated on experimental models of ventricular (early occlusion and calcium chloride-induced) and atrioventricular (aconitine-induced) arrhythmias. The preparation reduced or prevented episodes of paroxysmal tachycardia and ventricular fibrillation, decreased the incide... |
40 | Effect of a new ultrashort betalytic agent on aconitine-induced arrhythmia. | The anti-arrhythmic effect was tested on the model of aconitine-induced arrhythmia. The experiment was performed in vivo with 31 male Wistar laboratory rats. Group A was first administered aconitine and, after the onset of the first sinus rhythm disorders, the 44Bu compound was administered. Group B was first administe... |
41 | Simulated interactions between a Class III antiarrhythmic drug and a figure 8 reentry. | Ventricular Fibrillation is responsible for a majority of sudden cardiac death, but little is known about how ventricular tachycardia (VT) degenerates into ventricular fibrillation. Several clinical studies focused only on preventing VT with a class III antiarrhythmic drug resulted in many deaths. Our simulations inves... |
42 | Does the abnormal signal-averaged electrocardiogram predict future appropriate therapy in patients with implantable cardioverter-defibrillators? | Several studies have documented the prognostic significance of the signal-averaged electrocardiogram (SAECG) both after myocardial infarction and nonischemic cardiomyopathy. However, whether the SAECG can identify patients with implantable cardioverter-defibrillator (ICD) who receive appropriate therapy has not been hi... |
43 | Potential dangers of the Valsalva maneuver and adenosine in paroxysmal supraventricular tachycardia--beware preexcitation. | Paroxysmal supraventricular tachycardia (PSVT) is a common clinical problem. Valsalva maneuver and adenosine are effective therapies for many patients with PSVT, although any conversion to an irregular or wide complex tachycardia should prompt consideration of a preexcitation syndrome. We report a case where the Valsal... |
44 | Cardiac arrhythmias: diagnosis and management. The tachycardias. | To review the diagnosis and management of cardiac arrhythmias in a two-part presentation.</AbstractText>Articles and published peer-review abstracts on tachycardias and bradycardias.</AbstractText>Normal cardiac rhythm originates from impulses generated within the sinus node. These impulses are conducted to the atriove... |
45 | Hypothermia does not improve outcome from traumatic brain injury. | Therapeutic hypothermia is a potentially dangerous treatment with a very narrow therapeutic index. It is of proven benefit in certain conditions, including post ventricular fibrillation cardiac arrest and intermediate severity neonatal asphyxia. It is of no benefit and may cause harm in other contexts, such as elective... |
46 | Hypothermia improves outcome from cardiac arrest. | Out-of-hospital cardiac arrest is common and patients who are initially resuscitated by ambulance officers and transported to hospital are usually admitted to the intensive care unit (ICU). In the past, the treatment in the ICU consisted of supportive care only, and most patients remained unconscious due to the severe ... |
47 | Automated external defibrillators on board merchant vessels? Preliminary report article for discussion. | Acute heart diseases are the most frequent causes for fatalities on merchant vessels. Presently there is no sufficient therapy available to treat ventricular fibrillation. The aim of this study was to test whether common automated external defibrillators [AED] may be appropriate for the use aboard merchant vessels.</Ab... |
48 | Implantable cardioverter defibrillatory implantation in a patient with persistent left superior vena cava and right superior vena cava atresia. | Persistence of a left superior vena cava has been observed in 0.3% of the general population as established by autopsy findings. In the adult population. it is an important anatomic finding if a left or right superior vena cava approach to the heart is considered for device implantation. We present a case with persiste... |
49 | [The network for the management of acute coronary syndromes in Milan: results of a four-year experience and perspectives of the prehospital and interhospital cardiological network]. | In patients with acute ST-elevation myocardial infarction (STEMI), in order to shorten the time to definitive treatment, it is essential to coordinate the intervention between the local healthcare system and the hospitals. In 1999, a Working Group for Prehospital Emergency in Cardiology was established in Milan, and a ... |
50 | The role of NO in ischemia/reperfusion injury in isolated rat heart. | Nitric oxide (NO) is an important regulator of myocardial function and vascular tone under physiological conditions. However, its role in the pathological situations, such as myocardial ischemia is not unequivocal, and both positive and negative effects have been demonstrated in different experimental settings includin... |
51 | [Juvenile haemochromatosis presenting as intractable congestive heart failure]. | Juvenile haemochromatosis is an autosomal, recessive inherited iron metabolism disorder. The rapid deterioration and malignant prognosis differentiate juvenile haemochromatosis from hereditary haemochromatosis. The authors summarize the history of a 25 year old man, who worked in Hungary as a guest worker living in Rom... |
52 | Cardiac gas embolism after central venous catheter removal. | Clinical images reporting intracardiac gas level are sparce and, to our knowledge, the presence of gas embolism into the coronary arteries has never been reported. We describe the case of a young man who experiences life-threatening gas embolism with the presence of gas bubbles into cardiac cavities and coronary arteri... |
53 | The antiarrhythmic effect of n-3 polyunsaturated fatty acids: modulation of cardiac ion channels as a potential mechanism. | Sudden cardiac death remains one of the most serious medical challenges in Western countries. Increasing evidence in recent years has demonstrated that the n-3 polyunsaturated fatty acids (PUFAs) can prevent fatal ventricular arrhythmias in experimental animals and probably in humans. Dietary supplement of fish oils or... |
54 | Membrane basis for fish oil effects on the heart: linking natural hibernators to prevention of human sudden cardiac death. | The concept that diet-induced changes in membrane lipids could modify heart function partly arose from observations that membrane composition and physical properties were closely associated with the capacity of the heart to respond appropriately to torpor and hibernation. Observations of natural hibernators further rev... |
55 | Epidemiology and stratification of risk for sudden cardiac death. | Sudden cardiac death (SCD) is a major cause of mortality in the United States. Approximately 65% of cases of SCD occur in patients with underlying acute or chronic ischemic heart disease. The incidence of SCD increases 2- to 4-fold in the presence of coronary disease and 6- to 10-fold in the presence of structural hear... |
56 | Successful management of air embolism-induced ventricular fibrillation in orthotopic liver transplantation. | Ventricular fibrillation (VF) although less common during noncardiac surgery often brings about severe complication as an aftermath. We report a case of VF which was highly suspected to be induced by air embolism at the moment when the surgeon was dissecting the collateral vessels of portal vein in liver transplantatio... |
57 | [Angiotensin-converting enzyme inhibition and cardiovascular prevention: more than twenty years of clinical success]. | Angiotensin-converting enzyme (ACE) inhibitors are widely used for the treatment of cardiovascular disease since they improve blood pressure control in patients with hypertension and prolong survival in patients with acute myocardial infarction, asymptomatic left ventricular dysfunction and congestive heart failure. Mo... |
58 | Transthoracic echocardiographic predictors of left atrial appendage thrombus. | Transesophageal echocardiography (TEE) is commonly performed to detect the presence of a left atrial appendage (LAA) thrombus in the setting of an embolic event or before an anticipated electrical cardioversion for atrial fibrillation. The predictive value of transthoracic echocardiographic (TTE) findings in these pati... |
59 | Effects of thrombolysis during out-of-hospital cardiopulmonary resuscitation. | In this post hoc analysis, we assessed effects of thrombolysis during out-of-hospital cardiopulmonary resuscitation. The original study was designed as a double-blinded, prospective, multicenter, randomized, controlled clinical trial. In this report, 1,219 patients were randomized, but 33 patients were excluded due to ... |
60 | Intake of tuna or other broiled or baked fish versus fried fish and cardiac structure, function, and hemodynamics. | Fish intake is associated with improved cardiovascular health, including a lower risk of arrhythmic death, atrial fibrillation, and heart failure. However, the physiologic effects that may produce these cardiovascular benefits are not well-established. We investigated the cross-sectional associations between a usual di... |
61 | [Evaluation and surveillance of patients with an implantable defibrillator]. | The implantable cardioverter-defibrillator became in some years the reference treatment of ventricular arrhythmias in association with heart disease. Recently, this technique showed its efficiency in primary prevention for patients at high risk of sudden death. The follow-up of patients with automatic defibrillator req... |
62 | [Arrhythmia and sport]. | Sports arrhythmia has gained wide attention with the mediatization of the death of famous sports stars. Sport strongly modifies the structure of the heart with the development of left ventricular hypertrophy which may be difficult to differentiate from that due to doping. Intense training modifies also the resting elec... |
63 | [Sick sinus syndrome]. | Sick sinus syndrome is an association of sinus node dysfunction with bradycardia, pauses, sino-atrial block, chronotropic insufficiency and atrial arrhythmias. The diagnosis is essentially clinical and electrocardiographic. Prolonged ECG recordings allow a better assessment of the severity of the condition whereas elec... |
64 | [Mapping and ablation of malignant ventricular arrhythmias]. | Endocavitary investigations showed that the ventricular extrasystoles originated in the common ventricular myocardium (pulmonary infundibulum) in only 9 cases whereas the majority arose from the Parkinje system either on the anterior wall of the right ventricle or in septal region of the left ventricle. The extrasystol... |
65 | [Primary anomalies of ventricular repolarisation]. | The duration of repolarisation is the main determinant of the refractory period and therefore plays a major electrophysiological role. Ventricular repolarisation can be influenced or modified by very many extrinsic factors responsible for so-called secondary changes or anomalies. On the contrary, primary anomalies of v... |
66 | Postoperative atrial fibrillation independently predicts prolongation of hospital stay after cardiac surgery. | Postoperative atrial fibrillation (AF) occurs in up to 50% of cardiac surgery patients and represents the most common postoperative arrhythmic complication. A reduction of the length of hospital stay is a desirable goal in preventive strategies of postoperative AF. The aim of the present investigation was to determine ... |
67 | Myocardial protection with insulin cardioplegia: who can really benefit? | The aim of the study was to evaluate the effects on myocardial protection of insulin-enriched warm blood cardioplegia (IWBC) in coronary artery bypass grafting (CABG) and in subgroups of patients with associated cardiac co-morbidities.</AbstractText>Between May 2000 and December 2002, 268 consecutive patients underwent... |
68 | Thoracic epidural anesthesia preserves myocardial function during intraoperative and postoperative period in coronary artery bypass grafting operation. | The purpose of this study was to investigate the effect of thoracic epidural anesthesia (TEA) in patients with poor ventricular function undergoing conventional coronary artery bypass graft surgery (CABG) during the intraoperative and the postoperative period.</AbstractText>Eighty patients (n = 80) undergoing elective ... |
69 | Etiology of cerebrovascular accidents in octogenarians. | Stroke is the third leading cause of death in the United States, after coronary heart disease and cancer. Many survivors are left with mental and physical impairment and require assistance with activities of daily living. Twenty-eight percent of patients with stroke are under 65 years of age. We analyzed retrospectivel... |
70 | [Cardiac resynchronization therapy: who is suitable? Who requires an additional ICD as a backup?]. | Cardiac resynchronization therapy (CRT) has significant positive effects on the quality of life, enables patients to cope more efficiently with cardiopulmonary stress and leads to a reduction of total mortality in patients suffering from congestive heart failure NYHA classes III and IV, reduced ventricular function and... |
71 | Progressive facilitation of antegrade conduction via an accessory pathway in a patient with Wolff-Parkinson-White syndrome and permanent atrial fibrillation. | The case of a 64-year-old man with Wolff-Parkinson-White syndrome and permanent atrial fibrillation (AF) is reported. The patient was admitted due to electrocardiographic feature of AF with rapid conduction over the left-sided accessory pathway. Administration of pirmenol effectively suppressed the ventricular response... |
72 | The Brugada syndrome--an update. | Brugada syndrome is characterized by ST-segment elevation in the right precordial leads (V1-V3) and an episode of ventricular fibrillation (VF) in the absence of structural heart disease. A number of reports from the world have unveiled the clinical, electrocardiographic, electrophysiologic and prognostic features of B... |
73 | Microvolt T-wave alternans and the risk of death or sustained ventricular arrhythmias in patients with left ventricular dysfunction. | This study hypothesized that microvolt T-wave alternans (MTWA) improves selection of patients for implantable cardioverter-defibrillator (ICD) prophylaxis, especially by identifying patients who are not likely to benefit.</AbstractText>Many patients with left ventricular dysfunction are now eligible for prophylactic IC... |
74 | Estimation of atrial fibrillatory wave from single-lead atrial fibrillation electrocardiograms using principal component analysis concepts. | A new method for the assessment of the atrial fibrillatory wave (AFW) from the ECG is presented. This methodology is suitable for signals registered from Holter systems, where the reduced number of leads is insufficient to exploit the spatial information of the ECG. The temporal dependence of the bio-electrical activit... |
75 | Massive cardiac thrombosis in a patient with Sheehan's syndrome. | Growth hormone deficiency (GHD) is a risk factor for increased cardiovascular disease, and it has been recently demonstrated that abnormalities in coagulation system might contribute to the increased cardiovascular morbidity and mortality. However, there is not enough data related to the major thrombotic events in GH-d... |
76 | [Comparative study of the antiarrhythmic activity of mu- and delta-opioid receptor agonists during acute cardiac ischemia and reperfusion models in rats]. | It has been established that pretreatment with the selective mu-opioid receptor (OR) agonist DALDA (0.1 mg/kg, i.v.) or the selective delta1-OR agonists DPDPE (0.09 mg/kg) and/or (-)-TAN-67 (0.08 mg/kg) has no effect on the incidence of ventricular arrhythmias induced by a 10-min coronary artery occlusion and a 10-min ... |
77 | Atrial fibrillation and recurrent ventricular fibrillation during hypokalemia in Brugada syndrome. | A 41-year-old man with Brugada syndrome (BS) and no previous episodes of aborted sudden death or syncope referred to local emergency room for an episode of symptomatic atrial fibrillation. Blood chemistry results showed hypokalemia (2.9 mEq/L). The other parameters were within the normal range. After few minutes, an ep... |
78 | Ventricular fibrillation in two cases with dilated cardiomyopathy and mechanical alternans. | Clinical implication of mechanical alternans is yet unclear. It may suggest the risk for sudden death in patients with chronic heart failure. Two cases with dilated cardiomyopathy showed mechanical alternans during diagnostic cardiac catheterization. They suddenly died due to ventricular fibrillation before the inducti... |
79 | Determinants of mortality in patients undergoing cardiac resynchronization therapy: baseline clinical, echocardiographic, and angioscintigraphic evaluation prior to resynchronization. | In dilated cardiomyopathy (DCM) patients (pts) with cardiac resynchronization therapy (CRT) for ventricular dyssynchrony, long-term predictors of mortality and morbidity remain poorly investigated.</AbstractText>We reviewed data of 102 pts, 68 +/- 10 years, NYHA Class II-IV (14 Class II, 67 Class III, 21 Class IV), who... |
80 | Determinants and effects of electrical stimulation of the inferior interatrial parasympathetic plexus during atrial fibrillation. | Catheter stimulation of the inferior interatrial ganglionated parasympathetic plexus decreases the ventricular rate during atrial fibrillation (AF) in humans. However, the relatively high stimulation voltages might prevent implementation of neurostimulation in chronic implantable devices. From myocardial electrostimula... |
81 | Mapping of atrial activation during sustained atrial fibrillation in dogs with rapid ventricular pacing induced heart failure: evidence for a role of driver regions. | Dogs with rapid ventricular pacing (RVP)-induced congestive heart failure (CHF) have inducible atrial tachycardia, flutter, and fibrillation (AF). We tested the hypothesis that rapid atrial activation in multiple regions and at different rates is responsible for sustained AF in this CHF model.</AbstractText>We studied ... |
82 | Atrial natriuretic peptide has dose-dependent, autonomically mediated effects on atrial refractoriness and repolarization in anesthetized dogs. | Atrial natriuretic peptide (ANP) may alter electrophysiological properties of the heart and possibly have a role in arrhythmogenesis. However, previous studies have yielded conflicting results and have not fully considered whether ANP's cardiac electrophysiological effects are mediated via direct actions and/or indirec... |
83 | Clinical predictors of noninducibility of sustained atrial fibrillation after pulmonary vein isolation. | Noninducibility of sustained atrial fibrillation (AF) after pulmonary vein isolation (PVI) has been shown to be associated with a better clinical outcome. We evaluated the role of clinical variables that could predict noninducibility of sustained AF after PVI.</AbstractText>Data were collected prospectively from 181 pa... |
84 | [Progress in diagnostic and management of cardiac arrhythmias]. | The era of catheter ablation for the treatment of arrhythmias began in 1981 when Dr Scheinman performed the first atrioventricular junction ablation using direct current shocks in a patient with drug refractory atrial fibrillation and an uncontrolled ventricular rate. With the progress of radiofrequency catheter ablati... |
85 | Atrial fibrillation as a cause of left ventricular dysfunction after cardiac transplantation. | We report 3 cases of late-onset atrial fibrillation several years after cardiac transplantation, each involving left ventricular systolic dysfunction in the absence of cardiac rejection or cardiac allograft vasculopathy. Although the etiology of late-onset atrial fibrillation in cardiac transplant recipients is not cle... |
86 | Prevalence, pathophysiology, and clinical significance of post-heart transplant atrial fibrillation and atrial flutter. | Atrial rhythm disturbances, in particular atrial fibrillation (AF) and flutter (AFL), are common in the denervated transplanted heart. However, there is a relative paucity of data in the prevalence, mechanism of arrhythmia, and long-term significance.</AbstractText>(1) Determine the prevalence of AF and AFL in heart tr... |
87 | Therapies for ventricular cardiac arrhythmias. | During recent years, engineers and physicists have become increasingly interested in studying the electrical activity of the heart. Despite the fact that the heart is a complex and highly nonlinear system, its electrical behavior can be studied using a variety of experimental and clinical techniques, and can be modeled... |
88 | [Relationship between efficacy of antiarrhythmic drug therapy and structural remodeling in patients with paroxysmal atrial fibrillation]. | To evaluate whether the response to antiarrhythmic drug therapy in patients with paroxysmal atrial fibrillation affects the development of structural remodeling in the left atrium and ventricle.</AbstractText>This study included 230 patients (158 men and 72 women, mean age 67 +/- 11 years) in whom antiarrhythmic drug t... |
89 | Declining case fatality rates for acute myocardial infarction in South Asian and white patients in the past 15 years. | To determine whether case fatality rates in South Asian (Bangladeshi, Indian and Pakistani) patients with acute myocardial infarction have shown similar declines to those reported for white patients during the past 15 years.</AbstractText>Cross-sectional, observational study.</AbstractText>Coronary care unit in east Lo... |
90 | Intracoronary infusion of Gd3+ into ischemic region does not suppress phase Ib ventricular arrhythmias after coronary occlusion in swine. | Increased mechanical tension in the ischemic region during acute coronary occlusion might favor the occurrence of phase Ib ventricular arrhythmias. We aimed to investigate whether intracoronary administration of Gd(3+), a stretch-activated channel blocker, into the ischemic zone reduces the incidence of these arrhythmi... |
91 | Endurance exercise training attenuates cardiac beta2-adrenoceptor responsiveness and prevents ventricular fibrillation in animals susceptible to sudden death. | Enhanced cardiac beta(2)-adrenoceptor (beta(2)-AR) responsiveness can increase susceptibility to ventricular fibrillation (VF). Exercise training can decrease cardiac sympathetic activity and could, thereby, reduce beta(2)-AR responsiveness and decrease the risk for VF. Therefore, dogs with healed myocardial infarction... |
92 | Elimination of late potentials by quinidine in a patient with Brugada syndrome. | The beneficial effects of quinidine on ST-segment elevation, inducible ventricular tachyarrhythmias, and episodes of ventricular tachyarrhythmia have been reported in Brugada syndrome. This is the first report describing quinidine-induced elimination of the late potential, which is considered one of the parameters for ... |
93 | The role of premature atrial contractions as the main triggers of postoperative atrial fibrillation. | To better understand the pathogenesis of postoperative atrial fibrillation (AF), the mode of onset of AF after coronary artery bypass grafting was analyzed with respect to the autonomic balance, the heart rate (HR), and the presence of arrhythmias preceding the onset of sustained AF.</AbstractText>Holter recordings of ... |
94 | Predictive value of ventricular arrhythmia inducibility for subsequent ventricular tachycardia or ventricular fibrillation in Multicenter Automatic Defibrillator Implantation Trial (MADIT) II patients. | In the Multicenter Automatic Defibrillator Implantation Trial (MADIT) II, implantable cardioverter-defibrillator (ICD)-randomized patients underwent electrophysiologic testing. Both inducible and noninducible patients received an ICD. We correlated inducibility with the occurrence of subsequent ventricular tachycardia ... |
95 | Genomics and cardiac arrhythmias. | Sudden cardiac death in patients younger than 35 years of age is primarily due to genetic causes. Familial hypertrophic cardiomyopathy accounting for 30% to 40% is associated with structural heart disease while the Brugada syndrome and the long QT syndrome (LQTS) are associated with normal cardiac function. This is a r... |
96 | Analysis of the outcomes of cardiopulmonary resuscitation in an emergency department. | The aim of this study is to analyse the factors affecting emergency department (ED) cardiopulmonary resuscitation (CPR) outcome.</AbstractText>A standard CPR protocol was performed in all patients and certain pre and postresuscitation parameters including age, sex, initial arrest rhythm, primary underlying disease, ini... |
97 | Predictors and outcome of cardiopulmonary resuscitation (CPR) calls in a large haemodialysis unit over a seven-year period. | Cardiac mortality is the leading cause of death in dialysis patients, with cardiac arrests being most frequent. Our purpose was to determine the epidemiology, predictors and outcomes of calls for cardiopulmonary resuscitation (CPR) occurring in our haemodialysis unit.</AbstractText>We reviewed retrospectively all calls... |
98 | Plasma levels of NT-pro-BNP in patients with atrial fibrillation before and after electrical cardioversion. | Plasma levels of brain natriuretic peptide (BNP) have been examined in studies on patients with persistent atrial fibrillation, both before and after electrical cardioversion. Studied patients often showed a comorbidity with congestive heart failure, which complicates interpretation of measured BNP values as a natriure... |
99 | [Protective effect of the pretreatment with Chuanxiong-phthalide A on the vascular endothelial cells impaired by the ischemia and reperfusion in isolated rats hearts]. | The aim of this study was to investigate the protective effect of Chuanxiong-pathalide A on the injury of endothelial cell induced by ischemia and reperfusion in isolated rat hearts.</AbstractText>The isolated rat hearts were perfused under constant pressure with Chuanxiong-pathalide A at the concentrations of 0.012 5 ... |
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