Search Results
Results 351 - 400 of 1013
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Vernooy Kevin - - 2006
The occurrence of metabolic acidosis, rhabdomyolysis, hyperkalemia, and sudden cardiac death after long-term, high-dose propofol infusion has been referred to as propofol infusion syndrome (PRIS). The purpose of this study was to explore the ECG abnormalities observed in a patient with PRIS in order to identify possible pathophysiologic mechanisms of ...
Kawaguchi Takashi - - 2006
The degree of ST-segment elevation and amplitude of J waves, which may change in patients with the Brugada-type electrocardiogram (ECG) over time, are influenced by autonomic nervous activity and the administration of antiarrhythmic drugs. In the present study, we evaluated whether the shape of ST-segment elevation in patients with a ...
Maramattom Boby V BV Department of Neurology and Division of Critical Care Neurology, Mayo Clinic College of Medicine, Rochester, MN 55905, - - 2006
To determine the Incidence of cardiac troponin T (cTnT) elevation, electrocardiographic (ECG) changes, and arrhythmias in supratentorial intracerebral hemorrhage (ICH) and their association with early mortality. Patients with supratentorial ICHs admitted to Mayo Clinic, Rochester, Minn, from March 1998 to October 2003 were studied. We excluded moribund patients with ICHs ...
Auer Johann - - 2006
The syndrome of "apical ballooning" consists of an acute onset of transient extensive akinesia of the apical portion of the left ventricle, without significant stenosis on the coronary angiogram, accompanied by chest symptoms, ECG changes, and a limited release of cardiac markers disproportionate to the extent of akinesia. So far, ...
Monteban-Kooistra Wilma E - - 2006
OBJECTIVE: The Brugada syndrome is a clinical and electrocardiographic familial entity, which may lead to sudden cardiac death. A Brugada pattern ECG may occasionally be caused by conditions such as an overdose of tricyclic antidepressants (TCA). Toxicity of TCA frequently results in the need for critical care support. We retrospectively ...
Facchini Mario - - 2006
BACKGROUND: QT prolongation and ventricular arrhythmia have been proposed as the mechanism for sudden death in anorexia nervosa. The prevalence and the cause of QT prolongation remain controversial. OBJECTIVES: 1) to evaluate ventricular repolarization in patients with anorexia; 2) to evaluate factors that may influence repolarization, with focus on electrolyte ...
Diercks Deborah B - - 2006
OBJECTIVE: To describe time to electrocardiogram (ECG) acquisition, identify factors associated with timely acquisition, and evaluate the influence of time to ECG on adverse clinical outcomes. METHODS: We measured the door-to-ECG time for emergency department patients enrolled in prospective chest pain registry. Clinical outcomes were defined as occurrence of myocardial ...
Takayama Hideo - - 2006
BACKGROUND: Hypertrophic cardiomyopathy (HCM) is thought to have a microvolt-level electrical disarrangement in the myocardium that leads to ventricular tachyarrhythmias and sudden cardiac death. Although signal-averaged electrocardiography (ECG) has been used to detect late potential as a parameter of electrical instability, its predictability is not high. The focus of the ...
Familoni O B OB Department of Medicine, Olabisi Onabanjo University Teaching Hospital, Sagamu, - - 2006
Cardiovascular complications and sudden cardiac death are common in patients with chronic kidney disease and those on haemodialysis. This is often associated with prolonged QT(c) and QT(c) dispersion intervals. Forty-two patients on haemodialysis were compared with 45 control subjects to study the effect of haemodialysis on these ECG parameters and ...
Apt W - - 2005
Eleven years after they had been given itraconazole or allopurinol for the treatment of chronic American trypanosomiasis, 109 adult patients were checked for electrocardiographic abnormalities and evidence of Trypanosoma cruzi infection. The parasitological investigations included xenodiagnosis, in which the faeces of Triatoma infestans that had fed on the patients were ...
Chau Elaine M C - - 2006
Fulminant myocarditis may be rapidly fatal with severe haemodynamic compromise in previously healthy patients. We reviewed our experience with eight cases of biopsy-proven fulminant myocarditis (seven cases with lymphocytic myocarditis and one with eosinophilic myocarditis). Immunosuppression was given in seven out of eight cases. Mechanical circulatory support was required in ...
Christensen D D - - 2005
Our recent experience indicates that patients with a hemodynamically significant atrial septal defect secundum (ASD2) do not necessarily present with classic physical and electrocardiographic (ECG) findings. The purpose of the study was to review the records of patients either receiving a catheter device or undergoing surgical repair for the closure ...
Cecchi Franco - - 2005
BACKGROUND: National registries are advocated as instrumental to the solution of rarity-related problems for patients with hypertrophic cardiomyopathy (HCM), including limited access to advanced treatment options. Thus, an Italian Registry for HCM was created to assess the clinical profile and the level of care nationwide of patients with HCM. METHODS: ...
Mackin Paul - - 2005
BACKGROUND: Antipsychotic drugs have been associated with prolongation of the QTc interval on the electrocardiogram, and QTc prolongation is, in turn, associated with an increased risk of cardiac arrhythmias and sudden death. Antipsychotic polypharmacy has been implicated in reduced survival, possibly secondary to cardiotoxic effects of antipsychotic medication. Abnormalities of ...
Bischiniotis Theodoros - - 2005
Although malignant melanoma has a great propensity (38-50%) for cardiac involvement, as indicated by autopsy findings, cardiac metastases are rarely identified ante-mortem. The aim of this study was to record abnormal electrocardiographic and echocardiographic findings in patients with malignant melanoma. One hundred and eighty-five consecutive patients (male/female, 99/86; mean age, ...
Maffei Pietro - - 2005
BACKGROUND: Sudden death and increased prevalence of ventricular arrhythmias have already been described in acromegaly. Although late potentials (LPs) have been proved to be a new technique in detecting patients at risk for ventricular tachyarrhythmias its use in acromegaly is still unknown. METHODS: We studied 70 acromegalic patients [32 males, ...
Biagini Elena - - 2005
OBJECTIVES: This study sought to investigate the incidence, risk factors, and prognosis of dilated-hypokinetic evolution in a large cohort of patients with hypertrophic cardiomyopathy (HCM) followed up at a cardiology center serving both the pediatric and the adult population. BACKGROUND: The available data on this evolution of HCM mainly regards ...
Haghjoo Majid - - 2005
Clinical and electrophysiologic characteristics of 20 patients (15 males; mean age, 42 +/- 9 years) with Brugada syndrome were studied. Electrocardiographic abnormalities (spontaneous in 6 and provoked in 14) were recognized in 5 symptomatic and 15 asymptomatic patients. Mean PR (188 +/- 18 vs. 184 +/- 24 ms) and QT ...
Kosutic J - - 2005
Heart involvement in patients with Friedreich ataxia (FRDA) is a condition marked by inevitable progressive deterioration, with premature death. There is currently no specific treatment for FRDA. Recently, a therapy with idebenone, a short-chain coenzyme Q10 analogue, was reported to reduce left ventricular mass by 20% in about half of ...
Raizada Veena - - 2005
BACKGROUND: Polymorphisms of renin-angiotensin system (RAS) genes in patients with end-stage renal disease (ESRD) on chronic hemodialysis may be associated with QTc interval prolongation, leading to fatal arrhythmias. The objective of this study was to determine (1) the prevalence of QTc prolongation in hemodialysis patients, and (2) the association of ...
Chow Clara Kayei - - 2005
BACKGROUND: Investigation for cardiac source of embolus (CSE) is one of the commonest referrals for transthoracic echocardiography (TTE) of hospital inpatients, but has a relatively low-diagnostic yield. We sort to investigate whether 12-lead ECG might be useful in screening patients to obviate the need for TTE, in a subset of ...
Viskin Sami - - 2006
As arrhythmias in the long QT syndrome (LQTS) are triggered by heart rate deceleration or acceleration, we speculated that the sudden bradycardia and subsequent tachycardia that follow adenosine injection would unravel QT changes of diagnostic value in patients with LQTS. Patients (18 LQTS and 20 controls) received intravenous adenosine during ...
Roche Frédéric - - 2005
BACKGROUND: QT rate dependence is one of the major properties of ventricular repolarization, with its circadian and autonomic modulations. The alteration of cardiac autonomic tone occurring in obstructive sleep apnea syndrome (OSAS) patients could explain the altered rate-dependent adaptation of the myocardial repolarization. Thus, we postulated that dynamic alterations in ...
Montgomery Julia V - - 2005
Twelve-lead electrocardiography, a traditional component in evaluations of patients with hypertrophic cardiomyopathy (HC), is often regarded as a marker for the magnitude of left ventricular (LV) hypertrophy, which in turn has been linked to sudden death risk. To determine whether electrocardiographic (ECG) patterns have clinical utility by accurately reflecting phenotypic ...
Wong Cheuk-Kit - - 2005
OBJECTIVES: The purpose of this research was to examine the prognostic value of ST-segment changes (concordant ST-segment elevation and/or precordial V1 to V3 ST-segment depression) during presumed-new left bundle branch block (LBBB) in patients receiving fibrinolytic therapy. BACKGROUND: These patients are often considered high-risk, but their outcome is not well-defined. ...
Madias John E - - 2005
BACKGROUND: Increase in the amplitude of electrocardiogram (ECG) QRS complexes has been observed in patients treated for heart failure (HF), but the underlying mechanism has not been delineated. Also, correlation of augmentation of the QRS potentials with loss of weight has been noted in patients recovering from anasarca of varying ...
Dulu Alina - - 2005
OBJECTIVE: To report the development of the Brugada electrocardiographic (ECG) pattern in the immediate postoperative setting. DESIGN: Case report. SETTING: Postanesthesia care unit at Memorial Sloan-Kettering Cancer Center. PATIENT: A 51-yr-old white male who developed new ST-segment elevation in leads V(1)-V(3) typical of the ECG changes of the Brugada syndrome ...
Wathen Joe E - - 2005
STUDY OBJECTIVE: We assess accuracy of ECG interpretation and indications for obtaining ECGs and develop a clinical classification system of ECG abnormalities. METHODS: Prospectively acquired ECG data on patients 0 to 21 years of age and presenting to our pediatric emergency department (ED) were obtained. Clinical indications were documented. The ...
Corrado Domenico - - 2005
BACKGROUND: Three-dimensional electroanatomic voltage mapping offers the potential to identify low-voltage areas that correspond to regions of right ventricular (RV) myocardial loss and fibrofatty replacement in patients with arrhythmogenic RV cardiomyopathy/dysplasia (ARVC/D). METHODS AND RESULTS: Thirty-one consecutive patients (22 men and 9 women; mean age, 30.8+/-7 years) who fulfilled the ...
Klingenheben Thomas - - 2005
INTRODUCTION: T-wave alternans has been shown to be linked to the genesis of ventricular tachyarrhythmias. Currently, only qualitative assessment of microvolt T-wave alternans (MTWA) is recommended in clinical practise. Whether quantitative assessment of MTWA yields complementary information is unknown. METHODS AND RESULTS: Noninvasive MTWA determination was performed in 204 consecutive ...
Nowinski Karolina - - 2005
BACKGROUND: Hypertrophic cardiomyopathy carries an increased risk for sudden cardiac death. While pacing therapy reduces the left ventricular outflow tract gradient and improves symptoms in a subgroup of hypertrophic obstructive cardiomyopathy (HOCM) patients, its electrophysiological consequences are unknown and were therefore assessed in this prospective study. METHODS AND RESULTS: Fifteen ...
Chugh Rashmi - - 2005
PURPOSE: The purpose of this trial was to assess the objective clinical response, toxicity, and time to progression of treatment with 9-Nitro-Camptothecin (9-NC) in patients with advanced chordoma, soft tissue sarcoma (STS), and gastrointestinal stromal tumor (GIST). PATIENTS AND METHODS: Patients with locally advanced and/or metastatic chordoma, STS, or GIST ...
Watanabe Hiroshi - - 2005
Quinidine, a class I antiarrhythmic agent with blocking property of transient outward current, is a possible candidate for the suppression of ventricular fibrillation in patients with Brugada syndrome; although there is a concern that its ability to these effects may be proarrhythmic. Therefore, we evaluated the effect of quinidine sulfate ...
Geibel A - - 2005
A number of ECG abnormalities can be observed in the acute phase of pulmonary embolism (PE). Their prognostic value has not yet been systematically studied in large patient populations. In 508 patients with acute major PE derived from a large prospective registry, the current authors assessed, on admission, the impact ...
Megevand Angelique - - 2005
In this study, patients with obstructive hypertrophic cardiomyopathy (HC) were treated with dual-chamber pacemaker therapy. Long-term follow-up analysis showed that dual-chamber pacemaker therapy in selected patients resulted in a significant reduction in symptoms and in the left ventricular outflow tract gradient, which was maintained up to 10 years after implantation. ...
Yasuda Kenji - - 2005
BACKGROUND: The aim of this study was to evaluate the clinical features of patients with congenital complete heart block (CCHB) who developed dilated cardiomyopathy (DCM) after pacemaker implantation (PMI) and to determine factors predicting DCM development. METHOD: A total of 15 patients were reviewed retrospectively. They were classified into two ...
Lazzeri Chiara - - 2005
BACKGROUND: Electrophysiological abnormalities underlying the increased arrhythmogenicity of left ventricular hypertrophy (LVH) are still under investigation. The aim of this study was to assess non-invasively the electrophysiologic alterations in two different types of LVH, METHODS: Multiparametric non-invasive ECG analysis (R-R interval, QRS and QT intervals, QT dispersion, T-wave complexity, activation-recovery ...
Ohwada Rina - - 2005
Ampulla cardiomyopathy is named after the echocardiographic abnormalities occurring in this condition, characterized by extensive akinesis (ballooning ) of the apical region with hypercontraction of the basal segment of the ventricle. We describe 3 young female anorexia nervosa patients showing evidence of this cardiac complication after hypoglycemia. One case was ...
Mörner Stellan - - 2005
In this study, we evaluate cardiac autonomic function in hypertrophic cardiomyopathy (HCM) by assessing heart rate variability (HRV), comparing a short-term laboratory method with an ambulatory (24-h) method, in patients with and without beta-blockade. Reduced HRV is a risk factor for adverse events in some cardiac diseases, but is not ...
Madias John E - - 2005
Increased ECG QRS duration (QRSd) in patients with dilated cardiomyopathy (DCM) or heart failure (HF) is a well-known phenomenon. The QRSd is not a static ECG measurement but shows fluctuations, and its recent inclusion among the parameters used in referring patients for implantable cardioverter/defibrillators (ICDs) or cardiac resynchronization therapy (CRT) ...
Ashwath Mahi Lakshmi - - 2005
Creutzfeldt-Jakob disease is a spongiform encephalopathy affecting 1 individual per million population per year. We report on a previously healthy 43-year-old patient who presented with the simultaneous onset of a movement disorder, encephalopathy, cognitive decline, and dilated cardiomyopathy, and was found to have spongiform encephalopathy on brain biopsy. Although her ...
Kytö Ville - - 2005
BACKGROUND: Although enteroviruses and adenoviruses are considered to be the leading causes of the usually mild clinical myocarditis, little is known about the etiology of severe or fatal myocarditis. METHODS: We collected all available clinical records and myocardial autopsy samples for patients who had myocarditis recorded as the underlying cause ...
Ralph-Edwards Anthony - - 2005
OBJECTIVE: In November 1998, our center began offering alcohol ablation as an alternative to surgical myectomy for patients with hypertrophic obstructive cardiomyopathy. Patients with concomitant lesions were referred for surgical intervention, and the others were offered either treatment option. We sought to review the early outcomes for both protocols. METHODS: ...
Roche Frédéric - - 2005
We postulated that dynamic alterations in QT interval adaptation could characterize patients with anorexia nervosa (AN) and could be restored after weight gain. To assess ventricular repolarization features, we evaluated the QT dynamicity along RR intervals from 24-hour electrocardiographic data of patients with AN before and after refeeding. Ten young ...
Garbor F. Matos
Percutaneous Transluminal Alcohol Septal Ablation (PTSA) of the hypertrophied septum for patients with Hypertrophic Obstructive Cardiomyopathy (HOCM) is an effective and safe endovascular non-surgical therapeutic intervention. We report a detailed analysis of Electrocardiographic (ECG) changes associated with PTSA immediately and a mean of 164 days after the procedure in 25 ...
1Ali Tame
It is known that in patients with ischemic heart disease, QT dispersion (QTd) predicts ventricular arrhythmia and sudden cardiac death and that major coronary risk factors such as smoking, diabetes mellitus, hypertension increase QTd. It is not clear whether, in coronary artery disease, QTd increases because of ischemia or co-existence ...
Mizumaki Koichi - - 2005
BACKGROUND: QT interval is influenced by preceding R-R intervals and autonomic nervous tone. Changes in QT intervals during vasovagal reflex might reflect autonomic modulation of ventricular repolarization; however, this issue has not been fully elucidated. This study aimed to evaluate dynamic response of QT interval to transient changes in R-R ...
Madias John E - - 2005
Patients with congestive heart failure (CHF) responding to diuresis reveal marked augmentation of the QRS complexes (AUG-QRS) in their electrocardiograms (ECGs). Recently, such change in the ECG has been observed in patients with anasarca (AN) of varying etiology commensurate with partial alleviation of the volume overload; similar ECG change has ...
Scalvini S - - 2005
We investigated a home-based intervention based on telecardiology in patients with chronic heart failure (CHF). Two hundred and thirty CHF patients, aged 59 years (SD 9), in stable condition and with optimized therapy were enrolled. The programme consisted of trans-telephonic follow-up and electrocardiogram (ECG) monitoring followed by visits from a ...
Navarcikova S - - 2005
OBJECTIVES: The aim of this study was to evaluate changes in QRST integral maps in patients with ARVC. BACKGROUND: Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a progressive disorder of predominantly right ventricle characterized with arrhythmic events possibly leading to sudden cardiac death. QRST integral maps reflect local disparities of ventricular ...
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