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Serizawa Naoki - - 2008
It was recognized that sleep-disordered breathing (SDB) is associated with cardiac arrhythmia and sudden cardiac death. However, it was unclear whether the presence of SDB increased the risk of life-threatening ventricular arrhythmia in patients with heart failure (HF) with an implantable cardioverter-defibrillator (ICD). Seventy-one patients with HF and an ICD ...
Rosianu S - - 2009
AIMS: Arrhythmias occurring late after repair of tetralogy of Fallot (ToF) are common. Due to the risk of sudden cardiac death, attention is focused towards ventricular tachycardias (VT). The aims of this study were to determine the clinical profile of patients with known benign and malignant arrhythmias and to assess ...
Kobza Richard - - 2008
BACKGROUND: Physicians who are caring for patients with implantable cardioverter-defibrillators (ICDs) are regularly confronted with questions concerning daily activities. This study evaluates the habits of ICD patients with respect to sports activities, stays at high-altitude, and driving patterns. METHODS: A survey was performed in 387 patients with ICDs who were ...
Kolettis Theofilos M - - 2008
INTRODUCTION: The benefit of implantable cardioverter defibrillator (ICD) therapy in patients with haemodynamically stable ventricular tachycardia (VT) is not well documented. METHODS: In this single-centre observational study, we examined the medical records of 53 patients (48 men, mean age 66 +/- 1 years) treated with an ICD. The patients were ...
Sacher Frédéric - - 2008
BACKGROUND: Evolving management of coronary artery disease, heart failure, and the use of implantable cardioverter-defibrillators impacts the characteristics of patients with recurrent ventricular tachycardia (VT). We investigated the substrate, procedure, and outcome evolution of all patients referred for VT ablation during the past 8 years. METHODS AND RESULTS: From 1999 ...
Rosso Raphael - - 2008
BACKGROUND: Many electrophysiologists recommend implantable cardioverter defibrillators for patients with Brugada syndrome who are cardiac arrest survivors or presumed at high risk of sudden death (patients with syncope or a familial history of sudden death or those with inducible ventricular fibrillation at electrophysiologic study). OBJECTIVES: To assess the efficacy and ...
Duru O Kenrik OK David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA. - - 2008
Although patients with diabetes may benefit from physical activity, few studies have examined sustained walking in this population. To examine the factors associated with sustained walking among managed care patients with diabetes. Longitudinal, observational cohort study with questionnaires administered 2.5 years apart. Five thousand nine hundred thirty-five patients with diabetes ...
Berul Charles I - - 2008
OBJECTIVES: We sought to determine the implications of implantable cardioverter-defibrillator (ICD) placement in children and patients with congenital heart disease (CHD). BACKGROUND: There is increasing frequency of ICD use in pediatric and CHD patients. Until recently, prospective registry enrollment of ICD patients was not available, and children and CHD patients ...
Witte Klaus K - - 2008
AIMS: Adults with repaired tetralogy of Fallot (TOF) are at risk of sudden cardiac death (SCD). ESC and AHA guidelines suggest the use of implantable cardioverter defibrillators (ICDs) to protect from this. Few data are available on the benefits of these devices in this population, and there are no randomized ...
Sandhu Roopinder K - - 2008
BACKGROUND: Microvolt T-wave alternans (MTWA) measured from the surface electrocardiogram (ECG) is a marker of sudden cardiac death (SCD). Recently, it has been suggested that intracardiac alternans (ICA) detected from the endocardium underlies MTWA and is a marker of electrical instability leading to ventricular arrhythmias. As such, ICA may be ...
Saumarez Richard C RC Department of Cardiology, Papworth Hospital, University of Cambridge, Cambridge CB23 3RE, - - 2008
Paced electrogram fractionation analysis (PEFA) has been assessed for the prediction of sudden cardiac death (SCD) in a large-scale, prospective study of patients with hypertrophic cardiomyopathy (HCM). We determined the positive predictive value (PPV) of PEFA in relation to other risk factors for SCD and outcomes in 179 patients with ...
Kobza Richard - - 2008
BACKGROUND: Left ventricular noncompaction (LVNC) is a rare, congenital cardiomyopathy and can be associated with heart failure, embolic events, arrhythmias, and sudden cardiac death. Implantation of implantable cardioverter-defibrillators in these patients is a treatment option, but data on long-term follow-up are limited. The aim of the study was to analyze ...
Dewilde Willem - - 2008
BACKGROUND: Arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) is associated with sudden death in the young and heart failure in the elderly. The purpose is to review 15 symptomatic ARVD/C cases and also to describe the use of MRI as a diagnostic tool. METHODS AND RESULTS: This retrospective analysis includes 15 patients ...
Maron Barry J - - 2008
Hypertrophic cardiomyopathy (HCM) is the most common cause of sudden cardiac death in young people, including trained athletes. The implantable cardioverter-defibrillator (ICD), although initially designed as a treatment for older patients with coronary artery disease, has more recently proved to be a safe and effective therapeutic intervention in young patients ...
Pierre Bertrand - - 2008
AIMS: The implantable loop recorder is a useful diagnostic tool in dealing with recurrent syncope in patients. We tested to determine the influence of cardiac conduction abnormalities that turn up on resting electrocardiogram (ECG) and the impact of underlying cardiac disease on developments during follow-up. METHODS AND RESULTS: Ninety-five consecutive ...
Yerra Lakshminarayan - - 2008
Four patients with arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) are described. Two patients presented with sustained ventricular tachycardia and two with cardiac arrest from which they were successfully resuscitated. All four patients had typical electrocardiographic and echocardiographic features and fulfilled the task force criteria for diagnosis of ARVD/C. All four patients ...
Frangini Patricia A - - 2008
INTRODUCTION: An insertable loop recorder (ILR) in patients with infrequent syncope or palpitations may be useful to decide management strategies, including clinical observation, medical therapy, pacemaker, or implantable cardioverter defibrillator (ICD). We sought to determine the diagnostic utility of the Reveal ILR (Medtronic, Inc., Minneapolis, MN, USA) in pediatric patients. ...
Velanovich Vic - - 2008
BACKGROUND: It has been difficult to correlate quality of life with physiologic parameters. This may be because of the multitude of factors that lead to a symptom. An example of a cause of fatigue, lassitude, and lack of vitality is anemia. This study explores whether a generic quality-of-life instrument's measure ...
Zecchin Massimo - - 2008
BACKGROUND: To evaluate the role of nonsustained ventricular tachycardias (NSVT) for the prediction of major ventricular arrhythmias (MVA) in patients with idiopathic dilated cardiomyopathy (DCM) after optimization of medical treatment. METHODS AND RESULTS: Three hundred nineteen consecutive DCM patients were evaluated after adequate stabilization on optimal angiotensin-converting enzyme (ACE) inhibitor ...
Krediet C T Paul - - 2008
Cough syncope typically occurs in middle aged and senior, muscularly built males with a history of chronic obstructive lung disease. Originally, cough syncope was thought to be a form of epilepsy and only in the 1940s it was recognized to be of syncopal nature. The circulatory pathophysiology is, however, still ...
Peters Stefan - - 2008
Provocable coved-type ST-segment elevation in right precordial leads is an observation in approximately 16% of patients with typical arrhythmogenic right ventricular cardiomyopathy (ARVC). The value of this observation should be analysed in a long-term follow-up of 17 patients identified by systematic ajmaline challenge. At first evaluation, one female had an ...
Knollmann Björn C - - 2008
Abnormalities in heart rhythm continue to cause high rates of illness and death. Better treatment could be provided by solving two main challenges: the early identification of patients who are at risk, and the characterization of molecular pathways that culminate in arrhythmias. By analysing mechanisms that increase susceptibility to arrhythmia ...
Downey Andrew W - - 2008
OBJECTIVE: To describe the characteristics and outcomes of patients receiving a medical emergency team (MET) review for the MET syndromes of acute change in conscious state or arrhythmia and to assess the effect of delayed MET activation on their outcomes. DESIGN: Retrospective analysis of medical records. SETTING: University teaching hospital. ...
Holmgren Christina - - 2008
BACKGROUND: The use of transcutaneous electrical nerve stimulation (TENS) for pain relief is increasing. At the same time the implantable cardioverter defibrillator (ICD) is a routine treatment for malignant tachyarrhythmias. Today patients often need devices for more than one condition, and consideration must be given to the interaction between them. ...
Anthony Ryan - - 2008
BACKGROUND: The availability of stored intracardiac electrograms from implantable defibrillators (ICDs) has facilitated the study of the mechanisms of ventricular tachyarrhythmia onset. This study aimed to determine the patterns of initiation of ventricular fibrillation (VF) in Multicenter Automatic Defibrillator Implantation Trial (MADIT) II patients along with associated electrocardiogram (ECG) parameters ...
Brembilla-Perrot Béatrice - - 2008
AIMS: Syncope in Wolff-Parkinson-White (WPW) syndrome may reveal an arrhythmic event or is not WPW syndrome related. The aim of the study is to evaluate the results of electrophysiological study in WPW syndrome according to the presence or not of syncope and the possible causes of syncope. METHODS AND RESULTS: ...
Sakata Takao - - 2008
AIMS: Multiple arrhythmia re-inductions were recently shown in His-Purkinje system (HPS) ventricular tachycardia (VT). We hypothesized that HPS VT was a frequent mechanism of repetitive or incessant VT and assessed diagnostic criteria to select patients likely to have HPS VT. METHODS AND RESULTS: Consecutive patients with clustering VT episodes (>3 ...
Fischer Lars - - 2008
BACKGROUND: The objective of this study was to analyze factors leading to explantation of totally implanted access ports (TIAPs) and to assess its occurrence and clinical relevance. METHODS: Of 438 patient consecutive patients with a port explantation, 385 were eligible for this retrospective cohort study. Reasons for explantation as well ...
Li Yi-gang - - 2008
BACKGROUND: Substrate modification guided by CARTO system has been introduced to facilitate linear ablation of ventricular tachycardia (VT) after myocardial infarction (MI). However, there is no commonly accepted standard approach available for drawing these ablation lines. Therefore, the aim of the present study was to practically refine this time consuming ...
Roggen Annique - - 2008
Few data exist on the incidence of spontaneously occurring ventricular tachycardia (VT) in an unselected pediatric population. The aim of this study was to define the incidence and outcomes of VT in a general pediatric population. A retrospective analysis was performed of all documented episodes of VT in children referred ...
Patel Anshul M - - 2008
Patients with methadone-induced long-QT syndrome may experience Torsades de Pointes (TDP) or aborted sudden death requiring the placement of implantable cardioverter-defibrillators (ICDs). Outcomes after ICD implantation in these patients are unknown. Eight patients presenting with methadone-induced long-QT syndrome and episodes of symptomatic TDP were followed after having undergone ICD implantation. ...
Schernthaner Christina - - 2008
BACKGROUND: Syncope is a complex clinical syndrome that may be challenging with respect to a definite diagnosis. The implantable loop recorder (ILR) is a useful tool to define but also to exclude an arrhythmic aetiology. AIM: To investigate the causes of recurrent syncope or near-syncope with respect to underlying arrhythmias ...
Sulfi Sreekumar - - 2008
AIMS: To determine the clinical utility of 24 hour Holter monitoring by measuring the frequency of candidate arrhythmias recorded during the investigation of palpitations and altered consciousness. METHODS: Of 9,729 Holter recordings, reports were available in 8,973 (92.2%) performed in the 7394 patients who comprise the study group. The mean ...
Budeus Marco - - 2008
MADIT II like patients have not been compared to patients without an electrophysiological study, patients in whom ventricular tachycardia or fibrillation were induced in an electrophysiological study (EPS) and patients without an inducibility in EPS in one study. The multicenter automatic defibrillator implantation trial (MADIT) II showed a benefit of ...
Dib Chadi - - 2008
We sought to determine the frequency and outcomes with symptomatic arrhythmia in patients with apical ballooning syndrome (ABS). A retrospective review of the Mayo Clinic Angiography database was conducted to identify patients who met the Mayo criteria for ABS. Patients with documented arrhythmias formed the study group, and 31 randomly ...
Hegazy Ranya A - - 2008
Syncope is defined as temporary loss of consciousness and postural tone resulting from an abrupt transient decrease in cerebral blood flow. The present work aimed at determining how diagnostic tests are used in the evaluation of pediatric syncope at a tertiary pediatric referral center and to report on the utility ...
Sreeram N - - 2008
BACKGROUND: Syncope and palpitations occur frequently in young patients. Noninvasive diagnostic testing may be inconclusive. AIM: To assess the diagnostic yield of implantable loop recorders in young patients. PATIENTS AND METHODS: Thirty-three young patients underwent implantation of a loop recorder for long-term monitoring of cardiac rhythm, to establish symptom-rhythm correlation. ...
Yao Shu-Yuan - - 2008
OBJECTIVES: This study was designed to explore the morphology changes in limb leads of ECGs after successful ablation of verapamil sensitive idiopathic left ventricular tachycardia (ILVT) and their correlation with tachycardia recurrence. METHODS: Between January 2001 and December 2006, 116 patients who underwent successful ablation of ILVT were included in ...
Kriebel Thomas - - 2007
OBJECTIVES: The goal of this work was to assess efficacy of radiofrequency (RF) ablation of fast ventricular tachycardia (VT) in patients after surgical repair of tetralogy of Fallot (TOF) guided by noncontact mapping. BACKGROUND: Ventricular tachycardias after repair of TOF are associated with significant morbidity and mortality. METHODS: Ten patients ...
Hoefman Emmy - - 2007
BACKGROUND: Palpitations and light-headedness are common symptoms that may be indicative of cardiac arrhythmias. Effective triage by the GP might prevent delayed treatment or inappropriate referrals. The aim of this study was to determine the capability of GPs to assess the presence of cardiac arrhythmias and which signs and symptoms ...
Golzio Pier Giorgio - - 2007
A female patient just over 20 years of age developed first grade atrioventricular block, and later atrial fibrillation. When she was 41 years old she was diagnosed with Emery-Dreifuss muscular dystrophy (EDMD). A VVIR pacemaker was implanted in 2002, replaced in 2003 with an ICD. Nine months later, during febrile ...
Pezawas T - - 2008
OBJECTIVE: To stratify mechanisms and predictors of unexplained syncope documented by an implantable loop recorder (ILR) in patients with and without structural heart disease (SHD). DESIGN AND SETTING: Prospective study in consecutive patients of a university cardiac centre. PATIENTS AND METHODS: An ILR was implanted in 70 patients (34 male/36 ...
De Ferrari Gaetano M - - 2007
AIMS: The present study assessed the role of programmed ventricular stimulation (PVS) in risk stratification of patients with ischaemic cardiomyopathy (ICM), candidates for implantable cardioverter-defibrillator (ICD). METHODS AND RESULTS: Consecutive patients with ICM and LVEF < or = 40% (n = 106, age 61 +/- 7 years, LVEF 27 +/- ...
Champagne Jean - - 2007
The Brugada syndrome (BS) is a clinical entity involving cardiac sodium channelopathy, typical electrocardiogram (ECG) changes and predisposition to ventricular arrhythmia. This syndrome is mainly recognized by specialized cardiologists and electrophysiologists. Data regarding BS largely come from multicentre registries or Asian countries. The present report describes the Quebec Heart Institute ...
Cardinalli-Neto Augusto - - 2007
BACKGROUND: Implantable Cardioverter Defibrillators (ICD) have sporadically been used in the treatment of either Sustained Ventricular Tachycardia (VT) or Ventricular Fibrillation (VF) in Chagas' disease patients. This study aimed at determining predictors of all-cause mortality for Chagas' disease patients receiving ICD therapy. METHODS AND RESULTS: Ninety consecutive patients were entered ...
Sacher Frédéric - - 2008
BACKGROUND: Radiofrequency catheter ablation for ventricular tachycardia (VT) may be unsuccessful when critical portions of the circuit cannot be interrupted with either endocardial or epicardial radiofrequency application. OBJECTIVE: We sought to investigate whether transcoronary ethanol ablation (TCEA) can be used as a therapy for patients with VT who have failed ...
Streitner Florian - - 2007
OBJECTIVE: We investigated the relationship between interleukin-6 (IL-6) and the risk of experiencing spontaneous ventricular tachyarrhythmia (VT/VF) in patients with an implantable cardioverter-defibrillator (ICD). BACKGROUND: Cytokine levels predict outcome in patients with advanced heart failure and are elevated in patients with coronary artery disease (CAD). Regarding heart rhythm disturbances, proinflammatory ...
Ohkubo Kimie - - 2007
BACKGROUND: The study examined the electrocardiographic and electrophysiologic characteristics in relation to programmed ventricular stimulation (PVS)-induced ventricular fibrillation (VF) in patients with Brugada syndrome. METHODS AND RESULTS: Thirty-four patients with a Brugada-type electrocardiogram (ECG) were enrolled. Twelve patients had a type 1 ECG, 12 had a type 2 ECG, and ...
Greenberg Scott L - - 2007
BACKGROUND: Patients with ischemic cardiomyopathy (ICM) who have monomorphic ventricular tachycardia (VT) induced by programmed ventricular stimulation (PVS) are at increased risk of sudden cardiac death (SCD). Among a primary prevention population, the prognostic significance of induced polymorphic ventricular arrhythmias is unknown. METHODS: A total of 105 consecutive patients who ...
Sharma Param P - - 2007
OBJECTIVES: We compared characteristics and mortality of patients from a community population meeting enrollment criteria of the second Multicenter Automatic Defibrillator Implantation Trial (MADIT II) to those of the MADIT II subjects. BACKGROUND: MADIT II showed that implantable cardioverter-defibrillators (ICDs) reduce mortality in patients with myocardial infarction (MI) and low ...
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