Search Results
Results 601 - 650 of 1024
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Ahmad Sk Akhtar - - 2004
Although arsenic contamination of groundwater has been detected recently in the Terai region of Nepal, scarce data have been available regarding the possible health effects of the contamination. A study was carried out in two rural villages of Nawalparasi district, where the existence of arsenic contamination has been reported. Almost ...
Halperin Edward C - - 2004
Studies from Norway and Japan have found a higher incidence of medulloblastoma related to births that occur in the fall. The authors sought further evidence concerning this association. For 122 patients in a Duke University database and 90 patients from the Central Cancer Registry of North Carolina, the frequency distribution ...
Bansil Shalini - - 2004
Atrial fibrillation (AF) and paroxysmal AF (PAF) are common causes of stroke which may not be detected by a single electrocardiogram (EKG). We conducted a prospective study to determine if 48 hours of telemetry monitoring increased the rate of detection of AF in patients with acute stroke and thus identified ...
Agarwal S K - - 2004
Renal transplantation (RT) recipients are at a high risk of developing tuberculosis (TB) following transplantation. Effectiveness of isoniazid (INH) in preventing TB is well documented in immunocompetent as well as immunocompromised persons. There is paucity of data on role of INH prophylaxis in RT recipients. Thus, a prospective randomised trial ...
Ma Longle - - 2004
To study the relationship between the location of atrioventricular accessory pathways and occurrence of atrial fibrillation (AF) in patients with atrioventricular re-entrant tachycardia (AVRT). The clinical features and location of accessory pathways in patients with a history of AF were compared with those of patients with no history of AF. ...
Dai Youping - - 2004
In order to investigate the changes in the expression of extracellular signal-regulated kinase (ERK1/ERK2) and angiotensin-converting enzyme (ACE) in the patients with atrial fibrillation (AF), 52 patients with rheumatic heart diseases were examined. Nineteen patients had chronic persistent AF (AF > or = 6 months, CAF), 12 patients had paroxymal ...
Conway Dwayne S G - - 2003
To test the hypothesis that ethnic differences may exist in the epidemiology of atrial fibrillation (AF) and other cardiovascular conditions among patients admitted to the hospital with nonhemorrhagic stroke, we reviewed registry data over a 2-year period of 832 consecutive patients admitted with nonhemorrhagic stroke to our hospital, which serves ...
Young-Xu Yinong - - 2003
Atrial fibrillation (AF) is prevalent in the elderly, in patients with hypertension, and in patients with coronary artery disease (CAD). We hypothesized that statin therapy might be effective in preventing AF in patients with CAD and examined this hypothesis in a sample of patients with chronic stable CAD without AF, ...
Hertervig Eva - - 2003
OBJECTIVE: To delineate the electrophysiological properties of transseptal conduction from the left to the right atrium in patients with paroxysmal atrial fibrillation (AF). DESIGN AND RESULTS: Right atrial mapping using the electroanatomic mapping technique was performed at 111 +/- 16 sites in 16 patients with paroxysmal AF during pacing from ...
Lehto Mika - - 2003
BACKGROUND: Electrical cardioversion is effective in terminating even long standing atrial fibrillation (AF), but the relapse risk of AF is high. Data on long-term success of cardioversion in real life clinical practice are scant. METHODS: Restoration and maintenance of sinus rhythm as well as acceptance of permanent AF was studied ...
Poli Daniela - - 2003
Atrial fibrillation (AF) is a common arrhythmia that results in a high risk of cerebral and peripheral embolism. Factor V Leiden and factor II G20210A variant are two leading conditions for venous thrombosis. The aim of our study was to find out whether these two common prothrombotic mutations play a ...
Laurenius A - - 2003
BACKGROUND: Dietary induction of antisecretory factor (AF) can reduce diarrhoea in patients with inflammatory bowel disease. Patients with neuroendocrine tumours may suffer from diarrhoea with a prominent secretory component. We studied if AF-therapy could affect this type of diarrhoea. METHODS: Six patients with the midgut carcinoid syndrome and two with ...
van Walraven Carl - - 2003
There is an increased risk of stroke and other cardiovascular events in patients with atrial fibrillation (AF). Three meta-analyses of randomized clinical trials (RCTs) comparing oral anticoagulants (OAC) with aspirin (ASA) arrived at different conclusions regarding the relative efficacy of these agents to prevent ischemic stroke in AF patients. This ...
Opfermann U T - - 2003
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 for shortness ...
Lin Po Han - - 2003
Atrial fibrillation (AF) is the most common cause of arrhythmia and is an aging-related disease encountered in clinical practice. The electrophysiological remolding with Ca(2+) overloading and cellular structure changes were found in cardiomyocytes of AF patients. In previous studies, increased oxidative stress and oxidative damage was found in cardiomyocytes during ...
Wazni Oussama - - 2003
BACKGROUND: Atrial flutter (AFL) and atrial fibrillation (AF) frequently coexist in the same patient. Recently it has been demonstrated that the triggers for both AF and AFL may originate in the pulmonary veins (PVs). We hypothesized that in patients with both AF and typical AFL, pulmonary vein-left atrial junction (PV-LAJ) ...
Katritsis Demosthenes G - - 2003
Ninety patients who underwent cardioversion of persistent atrial fibrillation (AF) were randomized to bisoprolol 5 to 10 mg once daily or carvedilol 12.5 to 25 mg twice daily. Using intention-to-treat analysis, 23 patients (46%) in the bisoprolol group and 17 patients (32%) in the carvedilol group relapsed into AF during ...
Brembilla-Perrot Béatrice - - 2003
External cardioversion is used to stop VT or VF in emergency. Supraventricular tachyarrhythmias are sometimes noted after cardioversion in patients known to be previously in sinus rhythm. The purpose of the study was to evaluate the significance of supraventricular tachyarrhythmias induced by external cardioversion. The study population consisted of 22 ...
Padeletti Luigi - - 2003
INTRODUCTION: The combined role of atrial septal lead location and atrial pacing algorithms in the prevention of atrial tachyarrhythmias (AT/AF), including both atrial fibrillation and flutter, is unknown. We tested the hypothesis that atrial prevention pacing algorithms could decrease AT/AF frequency in patients with atrial septal leads, bradycardia, and paroxysmal ...
Thanvi B R - - 2003
BACKGROUND: Unsedated oesophagogastroduodenoscopy (OGD) is considered by most endoscopists to be a quick, safe, and well tolerated procedure. Older patients are said to tolerate it better than younger patients. However, patients' perception of the discomfort for the unsedated OGD has not been well studied. OBJECTIVE: This study was undertaken to ...
Sakurai Kenji - - 2003
STUDY OBJECTIVES: The prevalence of thromboembolism might be higher than previously recognized in patients with atrial flutter (AFL) based on findings of transesophageal echocardiography (TEE). To evaluate the potential prothrombotic state in patients with AFL, TEE findings and hemostatic markers were compared among patient groups with AFL, normal sinus rhythm ...
Turhan Hasan - - 2003
P-wave dispersion (PWD) is a new electrocardiographic marker that reflects discontinuous and inhomogeneous propagation of sinus impulses, which has been studied in some cardiac conditions as a useful predictor of paroxysmal atrial fibrillation (AF). The aim of the peresent study was to compare P-wave duration and PWD in patients < ...
Zackheim Herschel S - - 2003
BACKGROUND: Although an association of lymphomatoid papulosis (LyP) with mycosis fungoides (MF) is recognized, our understanding of this relation is limited. OBJECTIVE: We sought to document the clinical experience at the University of California, San Francisco, in 21 patients who had both LyP and MF and to do clonality studies ...
Freestone B - - 2003
BACKGROUND: There are established differences in cardiovascular disease in different racial groups. Worldwide, the literature regarding the clinical epidemiology of atrial fibrillation in non-white populations is scarce. OBJECTIVES: To document the prevalence of atrial fibrillation (AF) in the multiracial population of Malaysia, and to describe the clinical features and management ...
Bollmann Andreas - - 2003
INTRODUCTION: Frequency analysis of fibrillation (FAF) and time-frequency analysis (TFA) were developed recently in order to quantify atrial electrical remodeling in atrial fibrillation (AF) from the surface ECG. This article describes the experience with these two different frequency analysis techniques in consecutive AF patients and discusses possible applications in AF ...
Stambler Bruce S - - 2003
The Pacemaker Selection in the Elderly (PASE) trial was a prospective, multicenter, single blind, randomized comparison of single chamber, rate adaptive, ventricular pacing (VVIR) with dual chamber, rate adaptive pacing (DDDR) in 407 patients aged > or =65 years(mean 76 +/- 7 years, 60% male)with standard bradycardia indications for dual ...
Tada Hiroshi - - 2003
The purpose of this study was to clarify the change in the quality of life (QOL) and clinical outcomes following segmental pulmonary vein (PV) isolation for paroxysmal atrial fibrillation (AF) in 50 patients with drug-refractory, paroxysmal AF. The left superior, left inferior, and right superior PVs were targeted for isolation ...
Hassink Rutger J - - 2003
OBJECTIVES: We report an in-depth postmortem morphologic analysis of atrial myocardium in human pulmonary veins (PVs) from patients with and without atrial fibrillation (AF). BACKGROUND: Electrophysiologic studies established the critical role of PVs in the initiation of AF. To date, a paucity of data exists about PV morphology as an ...
Halperin Jonathan L - - 2003
BACKGROUND: Ximelagatran is a novel, oral direct thrombin inhibitor under investigation as an alternative to warfarin for prevention of thromboembolism in patients with nonvalvular atrial fibrillation (AF). Two long-term studies in patients with AF and at least one additional risk factor for stroke are underway to compare the safety and ...
Ramaswamy Karthik - - 2003
Atrial fibrillation (AF) is present in a significant number of patients with heart failure (HF) caused by left ventricular systolic dysfunction and is associated with increased morbidity and mortality. The deleterious interaction of AF and HF is mediated through a number of mechanisms including hemodynamic alterations and activation of the ...
Stabile Giuseppe - - 2003
BACKGROUND: Pulmonary veins (PVs) play a pivotal role in initiating and perpetuating atrial fibrillation (AF). We investigated if PV electrical isolation from the left atrium is required for curing AF. METHODS AND RESULT: Fifty-one patients with paroxysmal or persistent AF underwent circumferential radiofrequency ablation of PV ostia performed with an ...
Klippel Steffen S Department of Experimental Anaesthesiology, University Hospital Freiburg, Center for Clinical Research, Breisacher Str 66, 79106 Freiburg, - - 2003
To date, the diagnosis of polycythemia vera (PV) relies on clinical criteria. We have recently described the overexpression of a hematopoietic receptor, polycythemia rubra vera-1 (PRV-1), in patients with PV. Here, we report a quantitative reverse transcriptase-polymerase chain reaction (RT-PCR) assay for the measurement of PRV-1 mRNA levels. We have ...
Johnston Joseph A - - 2003
BACKGROUND: Despite demonstrated efficacy in stroke prevention, warfarin is underused in patients with atrial fibrillation (AF). Reasons for warfarin nonuse are unclear. METHODS: We conducted a retrospective cohort analysis using Ohio Medicaid administrative billing data to ascertain determinants of warfarin use for patients with new-onset nonvalvular AF. The database included ...
Ernst Sabine - - 2003
Pulmonary vein (PV) isolation by elimination of spike potentials has been reported to cure drug refractory atrial fibrillation. Because of the heterogenous morphology of the PVs, sequential electroanatomic reconstruction of the PVs was performed in 39 patients (group A), who underwent subsequent PV isolation by interruption of all conductive myocardial ...
Altunkeser Bülent B - - 2003
This study was planned to investigate the parameters detecting risk of developing atrial fibrillation (AF) in patients with sinus rhythm with structural heart disease. Forty-five patients with AF and 37 patients without AF but with structural heart disease (Group I) were included in this study. Thirty-eight patients (Group II) had ...
Ciçek Dilek - - 2003
BACKGROUND: Atrial fibrillation (AF) is a common complication of acute myocardial infarction (AMI) with a reported incidence of 7-18%. Recently, P-wave signal-averaged electrocardiogram (P-SAECG) has been used to assess the risk of paroxysmal AF attacks in some diseases. The aim of this study was to determine prospectively whether patients with ...
Sami Naveed - - 2003
Pemphigus vulgaris (PV) is an autoimmune mucocutaneous blistering disease. Recently, patients with mucosal involvement have been described to have autoantibodies to desmoglein 3 (dsg), while patients with mucocutaneous disease have autoantibodies to dsg 1 and dsg 3. The objective of this study was to prospectively analyze, over a 24-month period, ...
Cushman Jeremy T - - 2003
OBJECTIVES: As a result of increasing emergency department census and patient waiting times at the authors' institution, attending physician staffing was increased, followed by a change in resident shift schedule. A study was undertaken to ascertain any change in residents' exposure to patients during the times before and immediately following ...
Asher Craig R - - 2003
Over the past decade transesophageal echocardiography (TEE) has become an integral tool in the management of patients with AF. Thrombi can be readily detected and the function of the left atrium and left atrial appendage (LAA) can be easily assessed by this modality. With this knowledge, informed decisions regarding anticoagulation, ...
Dilaveris Polychronis E - - 2003
BACKGROUND: Atrial fibrillation (AF) is the most common arrhythmia encountered in clinical practice. Experimental and human mapping studies have demonstrated that perpetuation of AF is due to the presence of multiple reentrant wavelets with various sizes in the right and left atria. HYPOTHESIS: Atrial fibrillation may be induced by atrial ...
Endoh Yasuhiro - - 2003
The present study investigated both the clinical significance of atrial fibrillation (AF) before right atrial appendage (RAA) pacing and the influence of prolonged P wave on AF occurrence in RAA-paced patients with sick sinus syndrome (SSS). Fifty-seven patients (age 68+/-10 years; 19 men, 38 women) with SSS who underwent RAA ...
Fang Pihua - - 2003
PURPOSE: To evaluate and compare the effects of heart rate on conduction velocity in the cavotricuspid isthmus (CTI) and septum in patients with and without typical atrial flutter (AF) using electro-anatomic mapping (EAM) of the right atrium (RA). METHODS: Ten patients (age 53+/-10 yrs, 7M/3F) with AF and 13 patients ...
Portal I - - 2003
Low pretreatment viral load has consistently been shown to be an independent predictor of sustained response (SR) in patients with chronic hepatitis C infection. We assessed the efficacy of interferon (IFN) plus ribavirin vs IFN alone in low viraemic patients (<2 millions copies/mL) who had relapsed to a previous course ...
Schiffner Roman - - 2003
Clear proceedings in detection of malignant melanoma and monitoring of melanocytic nevi (MN) have been achieved by dermoscopy in recent years: sensitivity to 95% is possible for experts. Does patients' confidence in methods for detection of malignant melanoma most important for adherence in follow-up reflect this diagnostic power? A self-administered ...
Parsad D - - 2003
For effective treatment of vitiligo, it is as important to arrest the progression of the disease as it is to induce repigmentation. Recently, oxidative stress has been shown to play an important role in the pathogenesis of vitiligo. Ginkgo biloba extract has been shown to have antioxidant and immunomodulatory properties. ...
Delle Karth Georg - - 2003
OBJECTIVE: To assess the diurnal distribution of ventricular tachycardia (VT) and atrial fibrillation (AF) in critically ill patients. DESIGN AND SETTING: Prospective observational study (episode-based design) in an eight-bed medical/cardiological ICU at a university hospital that also admits postoperative patients. PATIENTS: 98 consecutive patients with AF ( n=55) or ventricular ...
Kato Ritsushi - - 2003
BACKGROUND: This study sought to define the technique and results of magnetic resonance imaging (MRI) of pulmonary vein (PV) anatomy before and after catheter ablation of atrial fibrillation (AF). METHODS AND RESULTS: Twenty-eight patients with AF underwent ablation. Patients underwent gadolinium-enhanced MRI before and 6 weeks after their procedures. A ...
Tükek Tufan - - 2003
We examined the possible effect of diurnal variability of heart rate on the development of arrhythmias in patients with chronic obstructive pulmonary disease (COPD). Forty-one COPD patients (M/F: 39/2, mean age: 59+/-8.5 years) and 32 (M/F: 27/5, mean age: 57+/-11 years) healthy controls were included. Twenty-four hour ECG recordings were ...
Akyürek Omer - - 2003
BACKGROUND: The relation between heart rate variability (HRV) and occurrence of atrial fibrillation (AF) in paroxysmal AF has been well studied, but there are controversial observations regarding the relation of HRV parameters to the recurrence of chronic AF after cardioversion. HYPOTHESIS: The present study compared HRV parameters of patients with ...
Baykan Merih - - 2003
BACKGROUND: P-wave dispersion (P dispersion), defined as the difference between the maximum and the minimum P-wave duration (P minimum), and maximum P-wave duration (P maximum) have been used to evaluate the discontinuous propagation of sinus impulse and the prolongation of atrial conduction time respectively. The aim of this study was ...
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