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Results 401 - 450 of 1013
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Hiasa Go - - 2005
We describe three elderly patients with Brugada-type electrocardiographic abnormalities unmasked by a high plasma concentration of the Class IC antiarrhythmic drug pilsicainide, caused by renal dysfunction. The electrocardiograms showed right bundle branch block pattern and ST segment elevation in the precordial leads in patients 1 and 2, and a polymorphic ...
Scalvini S - - 2005
Palpitation is a common symptom that sometimes results from a substantial cardiac arrhythmia. We compared the diagnostic yield of trans-telephonic event monitors with those of Holter monitoring in patients with intermittent palpitations. In all, 310 patients were randomly assigned to receive an event recorder or 24-hour Holter monitoring. Event recorders ...
Grimm Wolfram - - 2005
This study examined the relation between heart rate variability (HRV) and baroreflex sensitivity (BRS) and subsequent major arrhythmic events (MAE), defined as sustained VT, VF or sudden death, in 263 patients with idiopathic dilated cardiomyopathy (IDC) in sinus rhythm. The predefined measure of HRV was the standard deviation of all ...
Madias John E - - 2005
Since research is concentrated to a large extent on patients with left bundle branch block, we aimed at evaluating the hypothesis that measurements of certain intervals and other characteristics of the ECG may change over time in patients with right bundle branch block (RBBB), and to design a model, which ...
Bilchick Kenneth - - 2004
The investigators sought to test whether certain long QT syndrome (LQTS) mutations are associated with increased repolarization lability and whether repolarization lability (quantified by the QT variability index [QTVI]) is increased in patients with LQTS compared with controls. In 32 genotyped patients with LQTS type 1 (LQT1), 32 genotyped patients ...
Viskin Sami - - 2004
OBJECTIVE: The purpose of this study was to determine if patients with idiopathic ventricular fibrillation (VF) have shorter QT intervals than comparable healthy controls. BACKGROUND: The upper limit of the normal QT is well defined. Less is known about the lower limit of the normal QT. Patients with the recently ...
Qin Jian Xin - - 2004
Real-time 3-dimensional echocardiography was performed in 10 patients with obstructive hypertrophic cardiomyopathy (HC) before and after myectomy and in 6 controls. The exact location of systolic anterior motion of the mitral leaflet was shown in all patients with HC with a predominant involvement of the medial portion in 4 patients ...
Pyne Clifford C - - 2004
The management of patients with acute coronary syndromes (ACS) is becoming more complicated. With the advent of new therapies and surgical techniques, the likelihood that patients will make a full recovery improves. Cardiovascular disease remains the leading cause of death for adults in the United States, and with continually increasing ...
Scaglia Fernando - - 2004
OBJECTIVES: The aim of this study was to elucidate the frequency of major clinical manifestations in children with mitochondrial disease and establish their clinical course, prognosis, and rates of survival depending on their clinical features. METHODS: We performed a retrospective review of the medical records of 400 patients who were ...
Kesek Milos - - 2004
There is a need for markers reflecting the increased risk in patients with conduction disturbances. Conduction disturbances presumably cause inhomogeneous repolarization that may create an arrhythmogenic substrate. In patients with normal conduction, parameters derived from principal components analysis (PCA) of the T wave contain prognostic information. The nondipolar PCA components ...
Nasir Khurram - - 2004
BACKGROUND: The purpose of this study was to systematically study diagnostic and prognostic electrocardiographic (ECG) characteristics of arrhythmogenic right ventricle dysplasia/cardiomyopathy (ARVD/C). METHODS AND RESULTS: The patient population included 50 patients with ARVD/C (27 males, 23 females; mean age 38+/-15 years). We also analyzed the ECG of 50 age- and ...
Takimoto Yoshiyuki - - 2004
BACKGROUND: Eating disorders are thought to be risk factors for cardiac sudden death secondary to arrhythmia. Results in previous studies on QT interval and QT dispersion, markers of fatal arrhythmia, have been inconsistent. METHODS: We prospectively examined 179 female eating disorder patients, being over 18 years old and diagnosed according ...
Shafik A - - 2004
Corpora cavernosa (CC) evoke electric waves that appear to be of diagnostic significance in evaluation of erectile dysfunction (ED). We investigated the hypothesis that electrocavernosography (ECG) exhibits different patterns in the various types of ED: neurogenic, vasculogenic, and psychogenic. Electrocavernosography was performed in the flaccid phase in 16 neurogenic, 28 ...
Chimenti Cristina - - 2004
Fabry disease (FD) has been recognized as the cause of left ventricular hypertrophy in 6% of men with late-onset hypertrophic cardiomyopathy (HCM). Although FD is considered a recessive X-linked disorder, affected women are increasingly reported. The aim of our study was to determine the prevalence of FD in female patients ...
Maule Simona - - 2004
BACKGROUND: QT interval prolongation increases the risk of ventricular arrhythmias and sudden death in diabetic autonomic neuropathy and ischemic heart disease. In end-stage renal disease (ESRD), the effects of hemodialysis on QT interval are diverse and the influence of autonomic neuropathy has yet to be clearly defined. METHODS: Sixty-nine ERSD ...
Yanagi Sadamitsu - - 2004
BACKGROUND: Sudden cardiac death commonly occurs in young patients with hypertrophic cardiomyopathy (HCM); however, their heart rate variability (HRV) and blood pressure (BP) response to daily life activities is not well known. METHODS AND RESULTS: HRV and ambulatory BP monitoring were performed in 20 patients (age range: 7-21 years) and ...
Senen Kubilay - - 2004
P-wave dispersion (PWD) has been reported to be associated with inhomogeneous and discontinuous propagation of sinus impulses. In the present study, we aimed to investigate PWD in patients with dilated cardiomyopathy. The study population consisted of 72 patients with dilated cardiomyopathy and 72 healthy control subjects. Left atrial diameter, left ...
Engel Gregory - - 2004
Among the most compelling challenges facing cardiologists today is identification of which patients are at highest risk for sudden death. Automatic implantable cardioverter-defibrillators are now indicated in many of these patients, yet the role of noninvasive risk stratification in classifying patients at high risk is not well defined. The purpose ...
Guideri F - - 2004
Rett syndrome is a severe neurological developmental disorder. In this syndrome, the high incidence of sudden death is correlated with an alteration of ventricular repolarization. The purpose of this study was to evaluate plasmatic levels of nerve growth factor (NGF) in Rett patients with prolonged corrected QT (QTc) interval in ...
Lev D - - 2004
To determine the clinical manifestations and interfamilial variability of patients diagnosed with a mitochondrial cardiomyopathy, we reviewed the charts of 14 patients with cardiomyopathy out of 59 patients with mitochondrial disorders who attended the mitochondrial disease clinic at Wolfson Medical Center from 1996 to 2001. All patients underwent a metabolic ...
Dhawan Sumeesh - - 2004
A 63-year-old male with a prior history of thrombotic thrombocytopenic purpura was admitted with sudden onset of syncope. He denied chest pain. His initial blood chemistries were consistent with acute relapse of thrombotic thrombocytopenic purpura as indicated by microangiopathic hemolytic anemia and thrombocytopenia. The patient had evidence of myocardial injury ...
Fiorina Paolo - - 2004
BACKGROUND: ECG identification of apical myocardial infarction (MI) is controversial and lacks of accuracy. Our aim was to investigate the sensitivity of different proposed ECG criteria in the presence of apical perfusion defects assessed with SPECT analysis. METHODS: One hundred twenty-four (98 M, 26 F) out of 1500 patients with ...
Akalin F - - 2004
AIM: Breath-holding spells are common in infancy and early childhood, and patients are frequently referred to paediatric cardiology clinics for exclusion of heart disease. Recent data reveal subsequent development of epilepsy and neurocardiogenic syncope. Autonomic dysregulation and increased vagal stimulation leading to cardiac arrest and cerebral ischaemia is considered as ...
Vashist Aseem - - 2004
BACKGROUND: Electrocardiographic (ECG) changes during adenosine myocardial perfusion imaging (MPI) correlate with severe coronary artery disease and the presence of collaterals. However, the significance of these changes during adenosine MPI in patients with left ventricular hypertrophy (LVH) on baseline electrocardiogram is less well understood. OBJECTIVE: To evaluate whether ECG changes ...
Viotti R J - - 2004
To establish the usefulness of echocardiography for the clinical classification of patients with Chagas disease and to determine the predictors of mortality and clinical events. 849 patients with chronic Chagas disease with a mean follow up of 9.9 years were studied. On admission, ECG, chest radiograph, and two dimensional echocardiogram ...
Dogan A - - 2004
We investigated prognostic importance of electrocardiographic (ECG) changes in ischaemic stroke patients without primary heart disease because of the limited evidence. This study consisted of 162 patients (92 male, age 64 +/- 14 years) with first ischaemic stroke presenting to hospital during 18 months. One-month mortality was analysed by means ...
Tentolouris Costas - - 2004
BACKGROUND: Proinflammatory cytokines such as tumor necrosis factor alpha (TNF-alpha) and interleukin-6 (IL-6) are important mediators of immune response, associated with endothelial dysfunction in patients with coronary artery disease (CAD) or heart failure. We compared endothelial function and levels of IL-6 and TNF-alpha between patients with ischemic heart failure, dilated ...
Banno Katsuhisa - - 2004
BACKGROUND: Sleep-disordered breathing may adversely affect heart function, and thereby contribute to the progression of heart failure. A study was undertaken in patients with idiopathic cardiomyopathy to document the characteristics of sleep-disordered breathing. METHODS AND RESULTS: Thirty-five patients with a diagnosis of idiopathic cardiomyopathy, comprising 20 patients with dilated cardiomyopathy ...
Fesmire Francis M - - 2004
BACKGROUND: Vectorcardiographic (VCG) measurements of ST-vector magnitude (VM) and QRS-vector difference (VD) have been demonstrated to be independent predictors of adverse outcome (AO) and acute myocardial infarction (AMI) in emergency department (ED) chest pain patients with absence of bundle branch block or left ventricular hypertrophy (LVH) on the initial 12-lead ...
Cuomo Sergio - - 2004
We sought to determine QT variability pattern in patients with hypertrophic cardiomyopathy (HCM) and its relationship with the risk of syncope. QT interval variability was assessed from 24-hour Holter monitoring in 10 HCM patients with history of syncope, 10 HCM patients without history of syncope, and 10 healthy subjects. QT ...
Ahn Joon - - 2004
The Brugadas have made a significant contribution to medicine. Their discovery of a new clinical syndrome and ECG abnormalities has created a great deal of interest and has opened Pandora's box. Here, we discuss some worrisome thoughts about the condition. We stress the need for improved diagnostic criteria and treatment ...
Deshmukh Pramod M - - 2004
Despite incessant tachycardia, not all patients develop tachycardia-mediated cardiomyopathy. The cardiac renin-angiotensin system may be involved in cardiac remodelling and fibrosis. The level of angiotension-converting enzyme (ACE) in the serum is associated with a 287 bp insertion (I)/deletion (D) polymorphism in intron 16 of the ACE gene. The DD genotype ...
Mahrholdt Heiko - - 2004
BACKGROUND: Myocarditis can occasionally lead to sudden death and may progress to dilated cardiomyopathy in up to 10% of patients. Because the initial onset is difficult to recognize clinically and the diagnostic tools available are unsatisfactory, new strategies to diagnose myocarditis are needed. METHODS AND RESULTS: Cardiovascular MR imaging (CMR) ...
Frassati Dominique - - 2004
OBJECTIVE: To confirm the hypothesis that psychotropic drugs, especially neuroleptics, lithium, and antidepressants, are implicated as a cause of unexpected sudden death in psychiatric patients because of their cardiotoxicity, especially when hidden cardiac lesions are present. METHOD: We performed a full pathological examination of 14 psychiatric patients who unexpectedly and ...
Di Pasquale Pietro - - 2004
INTRODUCTION: Patients with a negative troponin (TnT) result showed 1.4% mortality during a mean follow-up of 9-10 weeks. Mortality was greater in patients with an evidence of ischemic ECG changes and a negative TnT test (1.6-4.4%). Few studies have examined the efficacy of echocardiography (2DE) in patients with chest pain. ...
Hisamatsu Kenichi - - 2004
We attempted to determine the usefulness of body surface mapping (BSM) for differentiating patients with Brugada syndrome (BS) from patients with asymptomatic Brugada syndrome (ABS). Electrocardiograms (ECG) and BSM were recorded in 7 patients with BS and 35 patients with ABS. Following the administration of Ic antiarrhythmic drugs, BSM was ...
Steinbigler Peter - - 2004
Conventional methods using Holter ECG recordings for noninvasive risk stratification are limited in patients with idiopathic dilated cardiomyopathy (IDC) prone to ventricular fibrillation (VF) having atrial fibrillation (AF) or bundle branch block (BBB). We therefore investigated, whether spectral assessment of beat-to-beat alternations of repolarization is associated with VF in these ...
Fahim Maged Ramses - - 2004
Dilated Cardiomyopathy (DCM) is a disease of the myocardium and one of the leading causes of death in patients with heart diseases. We explored the role of increased Nitric oxide and TNF-alpha on the pathogenesis and progression of DCM. 25 patients with DCM, and 20 apparently healthy age and sex ...
Ozsarac Murat - - 2004
This is the first known case report of electrocardiographic (ECG) changes suggestive of coronary vasospasm following a centipede envenomation. A 60-year-old man presented to the emergency department (ED) 1 hour after being stung by a 12-cm centipede. He complained of right great toe pain that did not radiate to his ...
Ho Hee-Hwa - - 2004
BACKGROUND: Data on the phenotypical pattern and natural history of hypertrophic cardiomyopathy in Chinese patients are very limited. The purpose of this study was to describe the clinical characteristics of and long-term outcome in Chinese patients with hypertrophic cardiomyopathy. METHODS: We evaluated 118 Chinese patients (62 male) who were diagnosed ...
Noutsias Michel - - 2004
Chronic autoimmunity and viral persistence constitute prognostic factors for adverse outcome in dilated cardiomyopathy patients. Inflammatory cardiomyopathy is a specific cardiomyopathy entity diagnosed in approximately 50% of dilated cardiopmyopathy patients by immunohistological quantification of immunocompetent infiltrates and cell adhesion molecule abundance. Patients with autoimmune inflammatory cardiomyopathy benefit from immunosuppressive treatment ...
Punukollu Gopikrishna - - 2004
OBJECTIVE: The purpose of this study was to report a novel electrocardiographic (ECG) phenomenon in acute pulmonary embolism characterized by QT interval prolongation with global T-wave inversion. METHODS: Among a total of 140 study patients with a confirmed diagnosis of acute pulmonary embolism, patients who fulfilled the inclusion criteria for ...
Lotze Ulrich - - 2004
Aside from enteroviruses and other viruses, e.g., adenoviruses, which are known to be associated with idiopathic dilated cardiomyopathy (IDC), a cardiac tropism is also attributed to parvovirus B19 (PVB19). The purpose of the present study was to determine the prevalence of enterovirus, adenovirus and PVB19 genomes in the myocardium of ...
Opadijo O G - - 2003
Left ventricular hypertrophy (LVH) is considered an independent risk factor even in the absence of systemic hypertension. Electrocardiographic (ECG) LVH with repolarisation changes has been found in some countries to carry more coronary risk than LVH alone. How far this observation is true among adult Nigerians is not known. We ...
Topuzoglu Gamze - - 2003
Trace elements are known to have a key role in myocardial metabolism. The accumulation (cobalt, arsenic, copper) or deficiency (selenium, zinc) of trace elements may be responsible for idiopathic dilated cardiomyopathy. We investigated the trace element concentrations (Cu, Zn, Mg) in sera from patients with dilated cardiomyopathy by atomic absorption ...
Papadopoulos Christodoulos E - - 2003
BACKGROUND: Preinfarction angina (PA) consists a strong clinical correlate to ischemic preconditioning (PC) and seems to occur in a bimodal time course. The aim of the study is to evaluate the impact of both forms of PC on QTc value representing myocardial electric stability, in patients with a first NSTEMI. ...
Calò Leonardo - - 2003
The prognosis for patients with idiopathic dilated cardiomyopathy (DCM) has markedly improved during the last decade, mainly because of advancements in therapeutic strategies. However, sudden death still accounts for a significant part of the total mortality in patients with moderate disease. Recent primary prophylactic trials failed to demonstrate any benefit ...
Ho Yi-Lwun - - 2003
The relation between myocardial functional changes and the apoptosis-related proteins in patients with dilated cardiomyopathy (DCM) has not yet been reported. The purpose of this study was to assess this issue through the use of dobutamine stress echocardiography. A total of 81 segments of left ventricles (from 6 patients with ...
Klatsky Arthur L - - 2003
PURPOSE: We compared the characteristics and outcomes of patients with "early repolarization" electrocardiograms (ECGs) with those who had normal ECGs. METHODS: In 1983 to 1985, we collected photocopies of 2234 selected ECGs from 73088 patients undergoing health examinations. Excluding 153 ECGs with missing data or that were judged to be ...
Asad Navaid - - 2003
OBJECTIVE: To evaluate right atrial (RA) "strain" as reflected by changes in P-wave amplitude and vector in patients with COPD immediately before and immediately after beginning treatment of exacerbations. BACKGROUND: P-pulmonale (frequently temporary, reflecting acute RA strain) occurs under a variety of circumstances, including COPD. Emergency room (ED) ECGs in ...
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