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Results 101 - 150 of 1024
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Han Seongwook - - 2010
Marshall bundles (MBs) are the muscle bundles within the ligament of Marshall. This trial sought to the electrophysiological characteristics of the MB and the anatomical connections between MB and left atrium (LA) in patients with persistent atrial fibrillation (AF). We enrolled 72 patients (male:female 59:13, age 59.9 +/- 9.4 years) ...
de Vos Cees B - - 2010
OBJECTIVES: We investigated clinical correlates of atrial fibrillation (AF) progression and evaluated the prognosis of patients demonstrating AF progression in a large population. BACKGROUND: Progression of paroxysmal AF to more sustained forms is frequently seen. However, not all patients will progress to persistent AF. METHODS: We included 1,219 patients with ...
Ntep-Gweth Marie - - 2010
AIMS: The purpose of this prospective study was to characterize the clinical profile of patients with atrial fibrillation (AF) in the urban population of a sub-Saharan African country and to assess how successfully current guidelines are applied in that context. METHODS AND RESULTS: This prospective study involved 10 cardiologists in ...
Miyamoto Koji - - 2010
AIMS: Complex fractionated atrial electrogram (CFAE) has been reported to relate to maintain atrial fibrillation (AF). The aims of this study were to investigate the relationship between CFAE and background conditions during sinus rhythm (SR). METHODS AND RESULTS: Electroanatomical mapping using an EnSite Array was performed in 20 patients (paroxysmal ...
Khuu Tam - - 2010
PURPOSE: An adjustment factor (AF) was developed and evaluated to determine the best method for estimating aminoglycoside clearance (CL(amino)) and creatinine clearance (CL(cr)) in underweight patients. METHODS: This study was a retrospective, multicenter, chart analysis of aminoglycoside pharmacokinetic data obtained between January 2000 and August 2006 at the University of ...
Pedrosa Rodrigo P - - 2010
BACKGROUND: Hypertrophic cardiomyopathy (HCM) is associated with arrhythmias and cardiovascular death. Left atrial enlargement and atrial fibrillation (AF) are considered markers for death due to heart failure in patients with HCM. Obstructive sleep apnea (OSA) is independently associated with heart remodeling and arrhythmias in other populations. We hypothesized that OSA ...
Wallace Thomas W - - 2010
Catheter-directed atrial fibrillation (AF) ablation is contraindicated among patients with left atrial appendage (LAA) thrombus. The prevalence of LAA thrombus among fully anticoagulated patients undergoing AF ablation is unknown. We retrospectively evaluated the prevalence of LAA thrombus among 192 consecutive patients undergoing AF ablation between July 2006 and January 2009. ...
Houben Richard P M - - 2010
This study introduces the use of wavelet decomposition of unipolar fibrillation electrograms for the automatic detection of local activation times during complex atrial fibrillation (AF). The purpose of this study was to evaluate this technique in patients with structural heart disease and longstanding persistent AF. In 46 patients undergoing cardiac ...
Modrego Javier - - 2010
The objective was to compare by proteomics the expression of proteins associated with the cytoskeleton, energetic metabolism, and cardiac cytoprotection between left atrial appendages (LAA) and right atrial appendages (RAA) obtained from patients with mitral valve disease both in sinus rhythm (SR, n = 6) and in permanent atrial fibrillation ...
Sanák Daniel - - 2010
Atrial fibrillation (AF) is considered a predictor for severe stroke and poor outcome. The aim was to evaluate whether AF is associated with poor outcome in acute ischemic stroke (IS) patients treated with intravenous thrombolysis (IVT). In a retrospective study, 157 consecutive IS patients (98 males, mean age 67.3 +/- ...
Potpara Tatjana - - 2010
BACKGROUND/AIM: Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia in general population. The aim of the study was to compare all-cause mortality and cardiovascular mortality in patients with lone and idiopathic AF to correspondent mortality in general population of Serbia. METHODS: A longitudinal observational study included the patients ...
Hanner Per - - 2010
CONCLUSION: Intake of antisecretory factor (AF)-inducing SPC-flakes significantly reduced vertigo in patients suffering from M?ni?re's disease (MD). The positive effect may be due to a modulation of the transport of water and ions in the endolymphatic space. OBJECTIVE: To evaluate the effects of a 3-month treatment period with SPC-flakes in ...
Knecht Sébastien - - 2010
The influence of the autonomic nervous system on the pathogenesis of complex fractionated atrial electrograms (CFAE) during atrial fibrillation (AF) is incompletely understood. This study evaluated the impact of pharmacological autonomic blockade on CFAE characteristics. Autonomic blockade was achieved with propanolol and atropine in 29 patients during AF. Three-dimensional maps ...
Berg Jenny - - 2010
PURPOSE: Although atrial fibrillation (AF) is associated with increased morbidity and mortality from heart failure, stroke and other thromboembolic complications, there are limited data on its health-related quality of life (HRQoL) effects. The objective was to analyse the factors determining utility in patients with all types of AF, both at ...
Qian Yongjun - - 2010
AIMS: The aim of this study was to determine the relationship between atrial structural remodelling and atrial fibrillation (AF) for different types of mitral valvular diseases (MVDs). METHODS AND RESULTS: Left atrial appendages tissue samples were obtained from 24 patients with MVDs undergoing mitral valve replacement surgery. Masson's trichrome staining ...
Kaatz S - - 2010
SUMMARY BACKGROUND: The extent to which chronic atrial fibrillation affects the risk of postoperative stroke is largely unknown. OBJECTIVES: We sought to determine the 30-day rate of stroke among patients with and without chronic AF who underwent 10 different types of surgery. PATIENTS/METHODS: The crude incidence of stroke was retrospectively ...
Rizos I - - 2010
The role of inflammation in maintenance of paroxysmal atrial fibrillation (PAF) in patients with hypertension and no other heart disease has not been fully elucidated yet. We investigated the association of various inflammatory markers with cardioversion and recurrence of PAF in patients with hypertension. We studied 75 patients (44 male, ...
Nam Gi-Byoung - - 2010
Atrial tachyarrhythmias (ATA) frequently develop during catheter ablation of atrial fibrillation (AF), but the mechanism of ATA during combined pulmonary vein isolation (PVI) and complex fractionated electrogram-guided ablation (CFEA) has not been reported. This study involved 105 patients with symptomatic, drug-refractory AF. After PVI, CFEA was performed in the left/right ...
Rizos T - - 2010
Atrial fibrillation (AF) is a frequent cause of stroke, but detecting paroxysmal AF (pAF) poses a challenge. We investigated whether continuous bedside ECG monitoring in a stroke unit detects pAF more sensitively than 24-hour Holter ECG, and tested whether examining RR interval dynamics on short-term ECG recordings using an automated ...
Christiansen Christine Benn - - 2010
IMPORTANCE OF THE FIELD: Dronedarone is developed for treatment of atrial fibrillation (AF) or flutter (AFL). It is a noniodinized amiodarone analogue and believed to be without the adverse effects of amiodarone. However, long-term adverse effects are not yet well investigated. AREAS COVERED IN THIS REVIEW: This is a review ...
Desai Harit V - - 2010
The authors investigated the use of warfarin at hospital discharge in 557 consecutive patients, mean age 76 years, with nonvalvular atrial fibrillation (AF) at a university hospital. Of 557 patients with AF, 116 (21%) had contraindications to warfarin. Of patients eligible for warfarin, warfarin was used in 8 of 30 ...
Eza-Nuñez P - - 2010
The objective of this study was to identify patients with otosclerosis and to characterize its clinical presentation among patients examined at our hospital with vertigo as the primary and most distressing symptom. Retrospective chart review. Tertiary medical center. This study involved 40 patients suffering from dizziness and diagnosed with otosclerosis. ...
Tang Min - - 2010
AIMS: Electrical isolation of the pulmonary veins (PVs) is the cornerstone of the ablative treatment of atrial fibrillation. Selective angiography of the PVs in standard fluoroscopic projections is often used for intraprocedural identification of PVs and their ostia. Variable spatial orientation and significant variability of PV anatomy are important limitations ...
Meierhenrich Rainer - - 2010
Since data regarding new-onset atrial fibrillation (AF) in septic shock patients are scarce, the purpose of the present study was to evaluate the incidence and prognostic impact of new-onset AF in this patient group. We prospectively studied all patients with new-onset AF and all patients suffering from septic shock in ...
Oi Hidekazu - - 2010
To identify factors leading to fatality of patients with amniotic fluid embolism (AFE). Patients who had fatal or nonfatal AFE were registered at the Hamamatsu University School of Medicine in the Department of Obstetrics and Gynecology from 1992 to 2006. Data collected included information about demographics and clinical characteristics. The ...
Sadanaga Tsuneaki - - 2010
Atrial fibrillation (AF) is associated with hemostatic abnormality and increased risk of thromboembolic events. The aim of the present study was to evaluate whether elevated D-dimer levels in combination with clinical risk factors can adequately predict subsequent thromboembolic events in patients with AF. This was a post hoc analysis of ...
Vukajlovic Dejan - - 2010
Remote surveillance is important for patients with atrial fibrillation (AF). Atrial signal recognition with conventional monitoring devices is difficult; remote AF detection is predominantly accomplished by R-R interval analysis. Twelve lead ECG (12L) displays atrial activity and remains the gold standard for AF diagnosis. CardioBip is a portable wireless patient-activated ...
Maegdefessel Lars - - 2010
Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia. The prevalence of AF increases sharply in old age (prevalence approximately 10% among persons 80 years of age and older). The expected risk for ischemic stroke is increased five-fold by the presence of AF, primarily as a result of cardiogenic ...
Lin Chin - - 2010
The prevalence and prognostic importance of CM occurring as a consequence of AF is poorly defined. This study investigated the incidence of CM in patients with AF, its clinical features and long-term outcomes. We demonstrated that CM is common in patients presenting acutely with newly diagnosed rapid AF, and carries ...
Bielecka-Dabrowa Agata - - 2010
The aim of the study was to assess the influence of co-existing atrial fibrillation (AF) on inflammatory condition factors, left ventricular function, clinical course and the efficacy of statin treatment of congestive heart failure in the course of dilated cardiomyopathy (DCM). In a prospective, randomized, open-label study, 69 patients with ...
Ziegler Paul D - - 2010
BACKGROUND AND PURPOSE: Evidence of atrial tachycardia/atrial fibrillation (AT/AF) is often sought in patients with ischemic stroke or transient ischemic attack. We studied patients with previous thromboembolic events (TE) who were implanted with devices capable of continuous arrhythmia monitoring to comprehensively quantify the incidence and duration of newly detected AT/AF. ...
Boll Stefanie - - 2010
BACKGROUND: Multielectrode catheters using duty-cycled radiofrequency (RF) have been developed to treat atrial fibrillation (AF). Many of these patients also have atrial flutter. Therefore, a linear multielectrode has been developed using the same RF energy. Objective: The concept and acute results of linear ablation using duty-cycled RF were tested in ...
Fiala Martin - - 2010
BACKGROUND: Left atrial (LA) endocardial voltage characteristics assessed during atrial fibrillation (AF) have not been previously compared in different AF types. This study was aimed at investigating the LA voltages and volumes in patients with paroxysmal and persistent AF. METHODS: LA electroanatomic voltage maps acquired during AF were compared between ...
Li Chen - - 2010
AIMS: The ratio of early transmitral flow velocity (E) to early diastolic mitral annular velocity (e') was applied as a non-invasive index to assess left ventricular filling pressure (LVFP). However, the reliability of E/e' was undermined in patients with atrial fibrillation (AF). Recently, a novel method entitled 'dual Doppler' was ...
Smit Marcelle D - - 2010
AIMS: The role of coronary artery disease (CAD) in atrial fibrillation (AF) is poorly investigated. This study investigated the value of myocardial perfusion single-photon emission computed tomography (SPECT) in the assessment of risk of CAD in patients with a history of AF. METHODS AND RESULTS: Out of consecutive patients without ...
Tuan Jiun - - 2010
AIMS: The mechanism of the action of flecainide in the termination of human atrial fibrillation (AF) is not fully understood. We studied the acute effects of flecainide on AF electrograms in the time and frequency domain to identify factors associated with AF termination. METHODS AND RESULTS: Patients who were still ...
Akutsu Yasushi - - 2010
PURPOSE: Neuronal system activity plays an important role for the prognosis of patients with atrial fibrillation (AF). Using (123)I metaiodobenzylguanidine ((123)I-MIBG) scintigraphy, we investigated whether a cardiac sympathetic nervous system (SNS) abnormality would be associated with an increased risk of vascular events in patients with paroxysmal AF. METHODS: (123)I-MIBG scintigraphy ...
Kimura Kazumi - - 2010
BACKGROUND AND PURPOSE: In acute stroke patients treated with intravenous tissue plasminogen activator (t-PA), early recanalization can improve patient outcome. Heart failure may result in reduction of brain perfusion, which limits the ability of the blood stream to wash out emboli. Brain natriuretic peptide (BNP) is used as a biological ...
Rosso Raphael - - 2010
INTRODUCTION: The prevalence of vagal and adrenergic atrial fibrillation (AF) and the success rate of pulmonary vein isolation (PVI) are not well defined. We investigated the prevalence of vagal and adrenergic AF and the ablation success rate of antral pulmonary vein isolation (APVI) in patients with these triggers compared with ...
Tang Ri-Bo - - 2009
This study sought to assess the impact of body mass index (BMI) on the risk of left atrial (LA)/left atrial appendage (LAA) thrombus in patients with atrial fibrillation (AF) before catheter ablation. From January 2007 to March 2008, 433 consecutive patients with nonvalvular AF were enrolled. Patients with valvular heart ...
Ananthapanyasut Wanwarat - - 2010
Chronic kidney disease (CKD) increases systemic inflammation, which is implicated in development and maintenance of atrial fibrillation (AF); therefore, we hypothesized that the prevalence of AF would be increased among nondialysis patients with CKD. This study also reports independent predictors of the presence of AF in this population. A retrospective, ...
Le Heuzey Jean-Yves - - 2010
The REgistry on Cardiac rhythm disORDers assessing the control of Atrial Fibrillation (RecordAF) is the first worldwide, 1-year observational, longitudinal study of the management of paroxysmal/persistent atrial fibrillation (AF) in recently diagnosed patients. The study was conducted at 532 sites in 21 countries across Europe, America, and Asia; recruitment was ...
Aizawa Yoshiyasu - - 2010
BACKGROUND: The J-RHYTHM (Japanese Rhythm Management Trial for Atrial Fibrillation) study demonstrated the benefit of rhythm-control compared with rate-control in Japanese patients with paroxysmal atrial fibrillation (AF), according to AF-specific quality of life scores. However, detailed information on prescribed antiarrhythmic agents remains unclear. METHODS AND RESULTS: Data for 419 patients ...
Anousheh Ramtin - - 2010
BACKGROUND: Successful mitral isthmus (MI) ablation may reduce recurrence of atrial fibrillation (AF) and macro-reentrant atrial tachycardia (AT) after pulmonary vein isolation (PVI) for AF. OBJECTIVE: To determine if achieving bidirectional MI conduction block (MIB) during circumferential pulmonary vein ablation (CPVA) plus left atrial linear ablation (LALA) affects development of ...
Singh Sheldon M - - 2009
INTRODUCTION: Sites of complex fractionated atrial electrograms (CFAE) with a short mean cycle length (MCL) and sites with a high dominant frequency (DF) have been advocated as targets for ablation in patients with persistent atrial fibrillation (AF). However, there are little data on the relationship between theses 2 markers. This ...
Park Jae Hyung - - 2009
BACKGROUND: Long-standing atrial fibrillation (AF) changes left atrial (LA) morphology, and the LA size is related to recurrence after radiofrequency catheter ablation (RFCA). We hypothesize that LA morphology, based on embryological origin, affects the outcome of RFCA. METHODS: We analyzed 3D computed tomographic (CT) images of LA in 70 patients ...
Scherr Daniel - - 2009
BACKGROUND: Cerebrovascular accident (CVA) is a serious complication of catheter ablation of atrial fibrillation (AF). The incidence and clinical predictors of periprocedural CVA in patients undergoing AF ablation are not fully understood. METHODS: This study included 721 cases (age 57 +/- 11 years; 23% female; 345 persistent AF) in 579 ...
Lo Li-Wei - - 2009
BACKGROUND: Nonpulmonary vein (PV) ectopy initiating atrial fibrillation (AF)/atrial tachycardia (AT) is not uncommon in patients with AF. The relationship of complex fractionated atrial electrograms (CFAEs) and non-PV ectopy initiating AF/AT has not been assessed. We aimed to characterize the CFAEs in the non-PV ectopy initiating AF/AT. METHODS: Twenty-three patients ...
Elvan Arif - - 2009
BACKGROUND: Localized sites of high frequency during atrial fibrillation (AF) are used as target sites to eliminate AF. Spectral analysis is used experimentally to determine these sites. The purpose of this study was to compare dominant frequencies (DF) with AF cycle length (AFCL) of unipolar and bipolar recordings. METHODS AND ...
Armaganijan Luciana - - 2009
Atrial fibrillation (AF) is the most commonly encountered arrhythmia in clinical practice and is associated with substantial morbidity and mortality. Its prevalence increases with age, affecting about 1% of patients aged <60 years and almost 10% of patients >80 years. AF is associated with a fivefold increasing risk of embolism ...
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