Search Results
Results 251 - 300 of 1021
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Anttonen Olli - - 2008
BACKGROUND: Short QT syndrome (SQTS) carries an increased risk for sudden cardiac death. However, only a short QT interval does not express the risk of ventricular arrhythmias. Thus, additional evaluation of the repolarization abnormality in SQTS patients is essential. In experimental models of SQTS, increased transmural dispersion of repolarization (TDR) ...
Lazar Jason M - - 2008
Central nervous system mediated cardiac injury is a field of growing interest pertaining to brain-heart interactions. Our group previously found higher QT dispersion, calculated as the difference between the maximum and minimum QT intervals on the admission ECG to be predictive of adverse outcomes in patients presenting with neurological events. ...
Groh William J - - 2008
BACKGROUND: Sudden death can occur as a consequence of cardiac-conduction abnormalities in the neuromuscular disease myotonic dystrophy type 1. The determinants of the risk of sudden death remain imprecise. METHODS: We assessed whether the electrocardiogram (ECG) was useful in predicting sudden death in 406 adult patients with genetically confirmed myotonic ...
Vaglio Joseph C JC - - 2008
BACKGROUND: The purpose of this article is to describe the demographic and clinical features of patients with hypertrophic cardiomyopathy (HCM) and latent obstruction, with an emphasis on identifying factors associated with disease progression and survival. The presence of a resting left ventricular outflow obstruction in patients with HCM has been ...
Lin Kathy B - - 2008
OBJECTIVES: T-wave abnormalities on electrocardiograms (ECGs) are common, but their ability to predict 30-day cardiovascular outcomes at the time of emergency department (ED) presentation is unknown. The authors determined the association between T-wave abnormalities on the presenting ECG and cardiovascular outcomes within 30 days of presentation in patients with potential ...
Olivotto Iacopo I Regional Referral Center for Myocardial Diseases, Azienda Ospedaliera-Universitaria Careggi and Università degli Studi, Florence, Italy. - - 2008
To determine the influence of a positive genetic test for hypertrophic cardiomyopathy (HCM) on clinical outcome. A cohort of 203 unrelated patients with HCM (mean +/- SD age, 50+/-18 years) was enrolled from January 1, 2002, through December 31, 2003. They were followed up for a mean +/- SD time ...
Hombach Vinzenz - - 2008
AIMS: The purpose of this study was to evaluate whether CMRI provides characteristic findings in patients with acute chest pain suffering from ST-elevation-myocardial infarction (STEMI), non-ST-elevation myocardial infarction (NSTEMI), acute myocarditis or Tako-tsubo cardiomyopathy. PATIENTS AND METHODS: 230 consecutive patients with acute chest pain underwent cardiac catheterization followed by CMRI ...
Shuja-ur-Rehman - - 2008
OBJECTIVE: To compare, the post Myocardial Infarction in-patient outcome of patients with early ST resolution to those without ST resolution on ECG, in a South Asian population. METHODS: This was a prospective study done at the Punjab Institute of Cardiology, Lahore. Consecutive patients of ST elevation myocardial infarction, who were ...
Scherr Daniel - - 2008
INTRODUCTION: Current ambulatory ECG monitoring systems are limited in their ability to diagnose patients with palpitations. The aim of this prospective study was to compare a new "leadless" ambulatory monitor with a standard event monitor in the evaluation of patients with palpitations. METHODS: Eighteen consecutive patients (11 female, 56 +/- ...
Kampmann Christoph - - 2008
AIM: Fabry disease (Fabry) is a rare X-linked disorder caused by a deficiency of the lysosomal enzyme alpha-galactosidase A. The progressive accumulation of the major substrate, globotriaosylceramide, leads to renal dysfunction and hypertrophic cardiomyopathy, which are reported to become apparent in the third decade. This study was performed to determine ...
Friedberg Mark Kevin - - 2008
We studied mechanical dyssynchrony and its association with clinical status in children with idiopathic dilated cardiomyopathy (IDC). The SD of QRS to peak systolic velocity interval by tissue Doppler was measured in 12 left ventricular segments, as a dyssynchrony index (DI), in each child with IDC during a 12-month period. ...
Brown Morgan L - - 2008
Hypertrophic cardiomyopathy (HCM) has a variable clinical presentation and penetrance. Many patients will have a benign course, but others will become symptomatic and develop left ventricular outflow tract obstruction. Echocardiograph remains the standard for diagnosis and assessment of obstruction, but gains are being made in the our understanding of the ...
Stead Latha G - - 2008
The authors compared the average electrocardiographic (ECG) intervals in a population of patients 80 years and older with published "normal" values. The medical records of patients who presented to the Mayo Clinic for health maintenance examinations and who had a routine ECG performed (N=702) were selected. Age; sex; rhythm; PR, ...
Clariá F - - 2008
In hypertrophic cardiomyopathy (HCM) patients there is an increased risk of premature death, which can occur with little or no warning. Furthermore, classification for sudden cardiac death on patients with HCM is very difficult. The aim of our study was to improve the prognostic value of heart rate variability (HRV) ...
Freeman Kalev - - 2008
OBJECTIVES: To assess the time to treatment for emergency department (ED) patients with critical hyperkalemia and to determine whether the timing of treatment was associated with clinical characteristics or electrocardiographic abnormalities. METHODS: The authors performed a retrospective chart review of ED patients with the laboratory diagnosis of hyperkalemia (potassium level ...
Semizel Evren - - 2008
OBJECTIVE: The aim of this case-controlled, cross-sectional study is to investigate the tendency towards arrhythmia using noninvasive arrhythmia markers (QT dispersion and heart rate variability) in children with Eisenmenger syndrome. METHODS: We studied 23 patients, whose pulmonary-to-systemic resistance ratio was calculated to be greater than 0.75, and who were diagnosed ...
Morishita Koichiro - - 2008
BACKGROUND: There have been few studies on degenerative changes of the cervical facet joint. This study was conducted to examine the image and clinical characteristics of patients with cervical facet hypertrophy and the significance of such characteristics. MATERIALS AND METHODS: The subjects were 215 patients with degenerative disease of the ...
Catheline Jean-Marc - - 2008
BACKGROUND: Morbidly obese patients have a high prevalence of known and unknown cardiopulmonary diseases. The aim of this study was to assess the value of cardiopulmonary tests routinely performed before bariatric surgery. METHODS: The population studied included 67 women and 10 men, aged 39 +/- 10 years, with a body ...
Brown Jason P - - 2008
Reducing door-to-balloon (D + B) time during primary percutaneous coronary intervention for patients with ST-segment elevation myocardial infarction (STEMI) reduces mortality. Prehospital 12-lead electrocadiography (ECG) with cardiac catheterization laboratory (CCL) activation may reduce D + B time. Paramedic-performed ECG was initiated in the city of San Diego in January 2005 ...
Gomes Carlos de Oliveira Cde - - 2008
Supernumerary tooth/teeth (ST) are a well recognized clinical phenomenon defined as teeth that are additional to the normal complement. The purpose of this report was to describe 3 patients who developed multiple sequential ST. All patients were boys between 8 and 12 years old without significant medical history. In 2 ...
Urge Ján - - 2008
During intravenous treatment with terlipressin for recurrent gastrointestinal (GI) bleeding, a 50-year-old male with no history of heart disease developed a newly prolonged QT interval and torsade de pointes. Risk factors present for acquired long QT syndrome were mineral dysbalance and a history of alcohol abuse with hepatic impairment. The ...
Joung Boyoung - - 2008
BACKGROUND: Magnetocardiography (MCG) is a new noninvasive modality for recording cardiac depolarization and repolarization and was used in the present study to evaluate abnormalities in patients with Brugada syndrome (BS). METHODS AND RESULTS: The MCG findings of 10 BS, 21 right bundle branch block (RBBB), and 34 normal patients were ...
Lesinskiene Sigita - - 2008
OBJECTIVE: Reports have suggested association between sudden death and QT prolongation in AN patients. Incidence and clinical consequences of cardiac abnormalities remain controversial. As the course of AN disease is long-lasting it remains unclear how often psychiatrists should send AN patients for somatic and especially cardiological investigation. The objective of ...
Nagajothi Nagapradeep - - 2008
A case of Takayasu arteritis (TA) presenting as postpartum cardiomyopathy in a puerperal 26-year-old Hispanic female patient is presented. TA is a large-vessel vasculitis affecting young to middle-aged women. TA can result in cardiomyopathy as a direct result of myocardial involvement. The patient had classical clinical and radiographic findings of ...
Kozdag Guliz - - 2008
Patients with dilated cardiomyopathy (DCM) may have a high incidence of clinically asymptomatic silent cerebral infarction (SCI). Prevalence of SCI and its risk factors may differ between ischemic and nonischemic DCM. The purpose of this study was to evaluate prevalence and related parameters of silent cerebral infarction in patients with ...
Gallagher Mark M - - 2008
BACKGROUND: The prevalence of the Brugada-type ECG and its natural history are still unclear. The recently proposed diagnostic criteria have not been systematically applied in a European general population. METHODS: We retrospectively analyzed ECGs and clinical data of 12,012 apparently healthy individuals who had undergone medical examination for occupational reasons. ...
Purim-Shem-Tov Yanina A - - 2007
INTRODUCTION: Screening for Acute Coronary Syndrome in chest pain patients can be initiated with a 12-lead electrocardiogram (ECG). Current American College of Cardiology/American Heart Association guidelines recommends getting an ECG performed and reviewed within 10 minutes of the time these patients present to the Emergency Department (ED). One innovative method ...
Xuan Tian-ming - - 2007
OBJECTIVE: To determine the risk of noncardiac surgery in patients with hypertrophic cardiomyopathy. METHODS: We reviewed the medical records of all patients who were diagnosed as hypertrophic cardiomyopathy at Peking Union Medical College Hospital from January 1998 to August 2006 and identified 24 patients who subsequently underwent noncardiac surgery. RESULTS: ...
Blum Johannes A - - 2007
OBJECTIVES: To estimate the frequency and evolution of heart involvement in human African trypanosomiasis (HAT) using electrocardiogram (ECG) findings; to describe these findings and to assess the frequency and clinical relevance of symptoms and signs before and after treatment. METHODS: In a prospective cohort study ECG findings, signs and symptoms ...
Cuculi Florim - - 2008
AIMS: Electrocardiographic (ECG) changes in patients with ascites are not well studied. The aim of this study was to evaluate ECG changes in patients with ascites. METHODS AND RESULTS: Prospective analysis of patients with ascites who were referred for paracentesis. Three ECGs were recorded before paracentesis. ECG 1 was a ...
Vijayaraghavan Ram - - 2008
AIMS: Previous analyses suggest only modest agreement between local site and core-laboratory (core-lab) electrocardiogram (ECG) interpretation in patients with acute coronary syndromes (ACSs); however, this has not been well examined outside of clinical trial populations. METHODS AND RESULTS: Patients (n = 5277 from 51 hospitals; 4916 with 1 year vital ...
Dimitrow Paweł P - - 2007
Impairment of endothelium-dependent coronary vasodilatation has been reported in hypertrophic cardiomyopathy (HCM). The aim of our study was to evaluate whether HCM patients have increased circulating blood markers of endothelial dysfunction. We compared 29 HCM patients with sinus rhythm, including 11 with the left ventricular outflow tract (LVOT) obstruction (gradient ...
Yoshida Tetsuro - - 2007
AIMS; Our study aims to investigate the pathophysiologic mechanism underlying tako-tsubo cardiomyopathy using F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET). Fifteen patients with tako-tsubo cardiomyopathy were enrolled in this study. Plasma catecholamines, cardiac troponin T (cTnT), and D-dimer were serially evaluated in all patients. Thallium-201 ((201)Tl) single-photon emission computed tomography ...
Benner John P - - 2007
STUDY OBJECTIVE: This study was conducted to assess the impact (diagnostic, therapeutic, and disposition) of the 12-lead electrocardiogram (ECG) on emergency department (ED) patient evaluation and management. METHODS: This project was a prospective study of a convenience sample of 304 ED patients undergoing ECG analysis during their evaluation in the ...
Hayashi Tamaki - - 2007
BACKGROUND: Idiopathic restrictive cardiomyopathy (RCM) is not a single disease and is rare. METHODS AND RESULTS: The clinical features and clinical course of 12 pediatric patients with RCM seen between 1978 and 2005 were retrospectively analyzed. The age at diagnosis ranged from 4 months to 12 years (median 4 years). ...
Faber L - - 2007
AIM: The aim of this study was to analyze hemodynamic and clinical outcome in a cohort of 312 patients who were followed up over a period of 12 months after alcohol septal ablation (PTSMA) for symptomatic hypertrophic obstructive cardiomyopathy (HOCM). METHODS AND RESULTS: PTSMA was intended in 337 patients with ...
Maden Orhan - - 2008
BACKGROUND: Although QRS-complex changes during ischemia have been described previously, their relation with no-reflow is not clear. PURPOSE: To evaluate relation of admission QRS duration with angiographic no-reflow, we studied 162 patients who underwent primary angioplasty. METHODS: Twelve-lead electrocardiogram with a paper speed of 50 mm/s was recorded on admission ...
Takagi Masahiko - - 2007
BACKGROUND: Neither the clinical characteristics nor risk stratification in Brugada syndrome have been clearly determined. We compared the clinical and ECG characteristics of symptomatic and asymptomatic patients with Brugada syndrome to identify new markers for high-risk patients. METHODS: A total of 188 consecutive individuals with Brugada syndrome (mean age 53 ...
Etheridge Susan P - - 2007
OBJECTIVES: We sought to assess the spectrum and outcome of young long QT syndrome (LQTS) patients, addressing treatment including device indications, risks, and benefits. BACKGROUND: Long QT syndrome has a phenotype ranging from asymptomatic electrocardiogram (ECG) abnormalities to sudden death. Treatments include beta-blockers and device implantation in high-risk individuals. Despite ...
Stübgen Joerg-Patrick - - 2008
Rigid spine syndrome (RSS) is a group of childhood-onset muscle disorders characterized by marked limitation of flexion of the spine. Various cardiac changes have been documented in case reports. This study reports on a cardiac evaluation of nine patients with the "vacuolar variant" of RSS. Noninvasive cardiac evaluation entailed creatine ...
Dervişoğlu Erkan - - 2007
OBJECTIVE: Cardiac arrhythmias commonly occur in hemodialysis patients. QT dispersion (QTd=QTmax-QTmin) reflects heterogeneity of cardiac repolarization, and increased QTd is known to predispose the heart to ventricular arrhythmias and sudden cardiac death. The aim of our study was to assess the association of iron stores, reflected by transferrin saturation (TSAT) ...
Ohmoto-Sekine Yuki - - 2007
Despite male predominance in the prevalence of hypertrophic cardiomyopathy (HCM), repeated diagnosis at our institute indicates a possible higher prevalence of deep Q waves with HCM in women. The current study examined gender similarities and differences in the prevalence of deep Q waves in HCM and in the morphologic and ...
Kuethe F - - 2007
BACKGROUND: Dilated cardiomyopathy (DCM) has been suggested to be a consequence of a prior viral infection leading to a chronic inflammatory and immunological reaction that leads to a structural and functional deterioration of the heart. Nevertheless, the results of present studies are conflicting, regarding the natural course of heart diseases ...
Loeb Henry S - - 2007
OBJECTIVE: To determine if T-wave normalization during exercise or dobutamine stress testing identified patients with myocardial ischemia as indicated by reversible perfusion defects. METHODS: Exercise or dobutamine stress tests with perfusion scintigraphy were performed in 1,173 patients with abnormal T-waves on their baseline electrocardiograms. The results of perfusion scintigraphy were ...
Elliott Perry - - 2007
Hypertrophic cardiomyopathy is a common genetically transmitted disease, defined clinically by the presence of left ventricular hypertrophy in the absence of loading conditions sufficient to cause the observed degree of hypertrophy. The disease has a heterogeneous clinical course, with many patients having few cardiovascular symptoms and others profound exercise limitation ...
Popović Z B - - 2008
BACKGROUND: Heart failure patients who are candidates for CRT frequently display longitudinal rotation (LR) - a swinging motion of the heart when imaged in a horizontal long-axis plane. OBJECTIVES: To identify the magnitude and predictors of LR in patients with ischaemic (ICM) and idiopathic dilated (DCM) cardiomyopathy, and to assess ...
Magrì Damiano - - 2007
BACKGROUND: Despite recent progress in iron chelation therapy, sudden cardiac death due to malignant ventricular arrhythmias remains a vexing, clinical problem in patients with beta-thalassemia major (TM). In this study we assessed whether the major indices of QT variability, emerging tools for risk stratification of sudden cardiac death, differ in ...
Melacini Paola - - 2008
BACKGROUND: Recurrent myocardial ischemia has been recognized as playing an important role in the pathophysiology of hypertrophic cardiomyopathy (HCM) and cardiovascular magnetic resonance (CMR), with or without gadolinium, is a promising method of evaluating fibrosis, edema and hypoperfusion. The aim of this study is to evaluate the interrelationship between late ...
Dimitrow Paweł Petkow - - 2008
AIM: To assess the extent of hyperenhancement in hypertrophic cardiomyopathy (HCM) patients with nonsustained ventricular tachycardia (NSVT) in comparison to patients without NSVT. DESIGN: In HCM patients, NSVT in Holter monitoring is a risk factor for sudden cardiac death; however, its positive predictive value is low. Varying risk of sudden ...
Dovgalyuk Jacqueline - - 2007
Syncope is a common and challenging presentation for the emergency physician. Various investigators have developed clinical risk score and clinical decision rules which are designed to identify the population at highest risk for adverse events. In each of these clinical decision tools, the electrocardiogram (ECG) is one of the key ...
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