Search Results
Results 201 - 250 of 1024
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Chen Mien-Cheng - - 2009
OBJECTIVE: The aim of this study was to examine the serum oxidative stress in patients with severe mitral regurgitation. DESIGN AND METHODS: This study analyzed serum oxidative stress index in patients with severe mitral regurgitation [persistent atrial fibrillation (AF) or sinus rhythm], paroxysmal lone AF patients and healthy subjects. RESULTS: ...
Cevik Cihan - - 2009
BACKGROUND AND AIM OF THE STUDY: Severe mitral regurgitation (MR) reduces left atrial thrombus formation in patients with mitral stenosis (MS) and atrial fibrillation (AF). Plasma D-dimer levels represent a biochemical marker for fibrinolytic activity in prothrombotic states. The prothrombotic burden in patients with mitral valve disease and/or AF was ...
Ma Xiaojing - - 2009
BACKGROUND: Patients with essential hypertension had a higher recurrence rate of atrial fibrillation (AF) than patients without hypertension. This study evaluated the role of various parameters for predicting recurrence after conversion of AF in patients with essential hypertension. METHODS: We retrospectively analyzed 136 patients with essential hypertension and a known ...
Ezekowitz Michael D - - 2009
Vitamin K antagonists (VKAs) are effective for stroke prevention in patients with atrial fibrillation (AF) but are difficult to use. Dabigatran etexilate is a prodrug that is rapidly converted to the active direct thrombin inhibitor dabigatran. It is administered in a fixed dose without laboratory monitoring and is being compared ...
Telmesani Laila M - - 2009
Nasal polyposis is a common problem in the eastern province of Saudi Arabia. Since allergic fungal sinusitis (AFS) can present with unilateral or bilateral nasal polyps, it is important to be aware of the prevalence of AFS in patients with nasal polyps. The medical records of 91 patients with nasal ...
Nault Isabelle - - 2009
PURPOSE: We postulated that amplitude of fibrillatory (F)-wave in patients with persistent AF would correlate with clinical characteristics and outcome in patients undergoing catheter ablation for AF. METHOD: Maximal and mean amplitude of F-waves were measured in V1 and lead II in 90 patients prior to ablation for persistent AF. ...
Böhm Michael - - 2009
AIMS: To investigate the relationship between microalbuminuria (MAU) and atrial fibrillation (AF) and to further evaluate whether the heart rate dependency of MAU in patients without AF is maintained in patients with a history of AF. METHODS AND RESULTS: The International Survey Evaluating Microalbuminuria Routinely by Cardiologists in patients with ...
Stiles Martin K - - 2009
OBJECTIVES: The purpose of this study was to determine whether patients with paroxysmal "lone" atrial fibrillation (AF) have an abnormal atrial substrate. BACKGROUND: While "AF begets AF," prompt termination to prevent electrical remodeling does not prevent disease progression. METHODS: Twenty-five patients with paroxysmal lone AF, without arrhythmia in the week ...
Ruby Rubinder S - - 2009
BACKGROUND: Real-time esophageal imaging is critical in avoiding esophageal injury. However, the safety of esophageal imaging with barium has not been specifically explored. METHODS: Three hundred seventy consecutive patients underwent left atrial (LA) ablation of atrial fibrillation (AF) under conscious sedation. One hundred eighty-five patients (50%) underwent the ablation procedure ...
Efremidis Michalis - - 2009
BACKGROUND: Limited data are available on the predictors of atrial fibrillation (AF) recurrence in patients with chronic AF. OBJECTIVES: To evaluate potential clinical, echocardiographic and electrophysiological predictors of AF recurrence, after internal cardioversion for long-lasting AF. METHODS: A total of 99 consecutive patients (63 men and 36 women, mean age ...
Ahmed Humera - - 2009
BACKGROUND: Cryoenergy is being increasingly used for atrial fibrillation (AF) ablation, but the thermal effect of cryoenergy on the esophagus remains undefined. OBJECTIVE: This study examines the esophageal effects of cryoenergy used during AF ablation. METHODS: Catheter ablation was performed using a cryoballoon catheter in 67 AF patients (Cryoballoon group), ...
Vizzardi Enrico - - 2009
Atrial fibrillation (AF) is often associated, more or less indirectly, with an inflammatory acute or chronic process. So it is probable that the inflammation could contribute to the genesis and the perpetuation of this dysrhythmia. Phlogistic test indexes in patients (pts) with AF will be positive and have prognostic significance ...
Shimano Masayuki - - 2009
BACKGROUND: Oxidative stress is associated with atrial fibrillation (AF). However, little is known about the relationship between serum markers of oxidation and electrical activity in patients with AF. OBJECTIVE: The purpose of this study was to investigate the possible association between serum markers of reactive oxidative metabolism and atrial remodeling ...
Lin Yenn-Jiang - - 2009
BACKGROUND: There is a paucity of data regarding the mechanism of maintaining atrial fibrillation (AF) after pulmonary vein isolation (PVI) in patients with AF. The aim of this study was to examine the impact of circumferential PVI on the left atrial (LA) substrate characteristics. METHODS AND RESULTS: Seventy-two AF patients ...
Wongcharoen Wanwarang - - 2009
Atrial fibrillation (AF) and heart failure are the two modern epidemics of cardiovascular disease. They are commonly encountered together and either condition predisposes to the other. Patients with both AF and heart failure carry a poor prognosis; therefore, the management of this group of patients should be addressed aggressively. In ...
Trullas-Vila Joan-Carles - - 2009
OBJECTIVE: To analyse incidence of hemorrhagic and thrombotic events in a series of ambulatory patients receiving acenocoumarol in a rural area of Spain (1997-2007). RESULTS: Out of 1,544 patients, 1,086 are receiving acenocoumarol at present (2% of our region's population). The total follow-up was 5,462 patients-years. Median age was 74 ...
Uretsky Seth - - 2009
AIMS: A transthoracic echocardiographic (TTE) parameter that would stratify atrial fibrillation (AF) risk would be useful. Tissue Doppler imaging can quantify left atrial appendage contraction velocity (LAA A(M)). METHODS AND RESULTS: We studied 141 patients referred for transoesophageal echocardiogram (TEE); 48 were in AF. We obtained TEE and TTE LAA ...
Nucifora Gaetano - - 2009
BACKGROUND: Although atrial fibrillation (AF) has been linked to underlying coronary artery disease (CAD), data supporting this association have been based on ECG and clinical history for the definition of CAD rather than direct visualization of atherosclerosis. METHODS AND RESULTS: The prevalence of CAD among patients with paroxysmal or persistent ...
Floria Mariana - - 2009
PURPOSE: Assessment of volume in relation with left atrial (LA) shape alteration before and after PV isolation. METHODS: We compared trapezoidal modification of LA using echocardiography with the ellipsoid formula (EEL: ) and CT, with both ellipsoid (CTEL: ) and truncated cone formulas (CTTR: ), in 40 patients, before and ...
Nguyen Bich Lien - - 2009
There is a lack of understanding of the substrate for microreentrant circuits and triggered activity of the pulmonary vein (PV) muscle sleeves and atria in patients with atrial fibrillation (AF). This study sought to examine the histological substrate of patients with chronic AF. We stained 23 biopsies taken from the ...
Henriksson Karin M - - 2010
This study examined all-cause mortality in stroke patients with and without documented atrial fibrillation (AF), and the impact of CHADS(2) score. A cohort of 105,074 patients, 31,821 (30.3%) with and 73,253 (69.7%) without documented AF, was studied. These patients were registered in the Swedish Stroke Registry during the years 2001-2005. ...
Dini Frank Lloyd - - 2010
BACKGROUND: Survival of patients with systolic heart failure (HF) may be influenced by the presence of chronic atrial fibrillation (AF) and circulating concentrations of B-type natriuretic peptides. In this study, we sought to assess the prognostic value of chronic AF in comparison to those of amino-terminal pro-brain natriuretic peptide (NT-proBNP) ...
Henriksson, Karin
OBJECTIVE: This study examined all-cause mortality in stroke patients with and without documented atrial fibrillation (AF), and the impact of CHADS(2) score. DESIGN: A cohort of 105,074 patients, 31,821 (30.3%) with and 73,253 (69.7%) without documented AF, was studied. These patients were registered in the Swedish Stroke Registry during the ...
Huang Mingfang - - 2009
BACKGROUND: The activated renin-angiotensin-aldosterone system has been reported to play an important role in the pathogenesis of atrial fibrillation (AF). We hypothesized that functional genetic variations of angiotensin-converting enzyme (ACE) and CYP11B2 genes may influence the susceptibility to AF in patients with hypertensive heart disease. METHODS: The I/D polymorphism of ...
Levitt Howard L - - 2009
Atrial fibrillation (AF) is the most common clinically significant arrhythmia worldwide, and its incidence is increasing. There has been increasing interest in ablation therapy to treat atrial fibrillation. One reason some patients undergo AF ablation might be to obviate the need for warfarin therapy, although current guidelines do not support ...
Maddox Thomas M - - 2009
BACKGROUND: Autonomic dysfunction appears to play a significant role in the development of atrial fibrillation (AF), and impaired heart rate recovery (HRR) during exercise treadmill testing (ETT) is a known marker for autonomic dysfunction. However, whether impaired HRR is associated with incident AF is unknown. We studied the association of ...
Sameer Abu-Eid I - - 2009
BACKGROUND: Cytochrome P450 2C19 (CYP2C19) participates in the metabolism of many clinically important drugs and xenobiotic compounds. Genetic polymorphisms of the CYP2C19 gene are described to have possible effect on drug treatment and increasing susceptibility to carcinogenic substances. The aim of this study was to determine the frequencies of the ...
Henningsen Kristoffer Mads Aaris - - 2009
AIM: The aim of this study was to assess the predictive value of inflammatory markers in patients with paroxysmal/persistent atrial fibrillation (AF) treated with radiofrequency (RF) catheter ablation. METHODS: Forty-six consecutive patients, mean age 55 years (range 31 - 81 yrs), with paroxysmal or persistent AF were treated with either ...
Silvestre F Javier - - 2009
OBJECTIVES: To determine the efficacy of a new saliva substitute in spray form, for patients with dry mouth. STUDY DESIGN: Thirty-seven patients with dry mouth were selected (16 males and 21 females), with an age of over 60 years and meeting the following inclusion criteria: xerostomia and hyposialia confirmed by ...
Henningsen Kristoffer Mads Aaris - - 2009
OBJECTIVE: The aim of this study was to assess the role of inflammatory processes in the development of atrial fibrillation (AF) and the prognostic impact of inflammatory markers in predicting long-term risk of AF recurrence after electrical cardioversion (CV). METHODS: High-sensitivity C-reactive protein (hs-CRP) and interleukin-6 (IL-6) were measured in ...
Shin Dong-In - - 2009
Catheter ablation for atrial fibrillation is a clinically established treatment by now while success rate varies between 60% and 85%. Interventional treatment of atrial fibrillation is still a challenging technique associated with a long procedure time and risk of major complications in up to 6 % of treated patients. The ...
Murdock David K - - 2009
Atrial fibrillation (AF) is the most common arrhythmia requiring treatment. High dose oral anti-arrhythmics may cardiovert some paroxysmal AF. This "pill in pocket" approach has allowed patients to treat themselves on an as needed basis. Pro-arrhythmic concerns have limited the usefulness of this approach to patients without structural heart disease. ...
Schubert Mark S MS Allergy Asthma Clinic, Ltd, Phoenix, Arizona 85013, USA. - - 2009
Allergic fungal sinusitis (AFS) is a noninvasive form of fungal rhinosinusitis with an incidence of between 6 and 9% of all rhinosinusitis requiring surgery. Regional variation in incidence has been reported, with the southern and southwestern US particularly endemic. Patients with AFS commonly present with chronic rhinosinusitis with nasal polyps, ...
Workman Antony J - - 2009
Left ventricular systolic dysfunction (LVSD) is a risk factor for atrial fibrillation (AF), but the atrial cellular electrophysiological mechanisms in humans are unclear. This study sought to investigate whether LVSD in patients who are in sinus rhythm (SR) is associated with atrial cellular electrophysiological changes that could predispose to AF. ...
De Vos C B - - 2009
BACKGROUND: The total atrial conduction time (TACT) is an independent predictor of atrial fibrillation (AF). A new transthoracic echocardiographic tool to determine TACT by tissue Doppler imaging (PA-TDI (the time from the initiation of the P wave on the ECG (lead II) to the A' wave on the lateral left ...
Toutouzas Konstantinos - - 2009
BACKGROUND: In the clinical setting there are conflicting results regarding the role of inflammatory activation in atrial fibrillation (AF). Coronary sinus (CS) thermography assesses myocardial heat production and is correlated with inflammatory states. We investigated in patients with AF whether 1) there is increased CS blood temperature and 2) the ...
Li Kang - - 2008
BACKGROUND: Atrial fibrillation (AF) occurs commonly in patients with acute myocardial infarction (MI) and is associated with an increased long-term mortality. This study aimed to investigate the clinical characteristics and outcomes of AF in in-hospital elderly Chinese patients with acute MI. METHODS: A total of 967 patients with acute MI, ...
Rostock Thomas - - 2008
BACKGROUND: Termination of chronic atrial fibrillation (CAF) can be achieved by catheter ablation using a stepwise approach. However, there are limited data on the contribution of the right atrium to the CAF process. Furthermore, the prognostic value of CAF termination remains unclear. METHODS AND RESULTS: Eighty-eight patients (61+/-10 years of ...
Bruce Sara - - 2009
The H19 imprinting control region (ICR), located on chromosome 11p15.5, has been reported hypomethylated in 20-65% of Silver-Russell syndrome (SRS) patients. We investigated the methylation status of 11p15.5 ICRs in SRS patients and children born small for gestational age (SGA) to clarify the relationship between phenotype and H19 methylation status. ...
Guillem Maria S - - 2009
INTRODUCTION: Invasive high-density mapping of atrial fibrillation (AF) has revealed different patterns of atrial activation ranging from single wavefronts to disorganized activation with multiple simultaneous wavefronts. Whether or not similar activation patterns can also be observed using body surface recordings is currently unknown, and was consequently evaluated in this study. ...
Fauchier Laurent - - 2009
In patients with atrial fibrillation (AF) and heart failure (HF), beta blockers and digoxin reduce the ventricular rate, but controversy exists concerning how these drugs affect prognosis in this setting. This study compared the effects of beta blocker and digoxin on mortality in patients with both AF and HF. In ...
Lim Hong Euy - - 2009
BACKGROUND: Percutaneous transcatheter ablation of atrial fibrillation (AF) in patients with interruption of inferior vena cava (IVC) has not been reported in the literature. OBJECTIVE: The purpose of this article was to demonstrate the safety and feasibility of the superior approach via the right internal jugular vein in performing catheter ...
Imanaka Shunji - - 2008
Epidemiological studies on atrial fibrillation (AF) in Japanese is scarce. As aging is one of the contributing factors to AF, we investigated the prevalence of AF among aged members of a Japanese community. Samples were community residents who were aged 65 years or older from town I, which is located ...
Ohkubo Kimie - - 2008
This study was designed to determine whether endocardial high-frequency stimulation at the pulmonary vein (PV) antrums can localize cardiac autonomic ganglionated plexi (GP) and whether ablation at these sites can evoke a vagal response and provide a long-term benefit after PV isolation (PVI) for atrial fibrillation (AF). Radiofrequency ablation of ...
Siu Chung-Wah - - 2009
BACKGROUND: Hyperthyroidism is one of the most common reversible causes of atrial fibrillation (AF); nevertheless, the risk of ischemic stroke in patients with hyperthyroidism who present with new-onset AF is unclear. OBJECTIVE: This study sought to investigate the clinical outcome of hyperthyroidism-induced AF with regard to risk of ischemic stroke ...
Scherr Daniel - - 2009
BACKGROUND: Transesophageal echocardiography (TEE) is commonly used prior to catheter ablation of atrial fibrillation (AF) in order to exclude left atrial (LA) thrombus. However, the incidence and predictors of LA thrombus detected with TEE have not been systematically examined in this setting. METHODS: This study included 732 cases (mean age ...
Furusho Hiroshi - - 2008
BACKGROUND: The number of the elderly patients with atrial fibrillation (AF) is increasing, but the current status of anticoagulation therapy for elderly patients with AF in Japan is not clear. METHODS AND RESULTS: Among the patients registered in the "Hokuriku Atrial Fibrillation Trial (HAT) 1", 365 AF patients aged > ...
Upadhyay Gaurav A - - 2008
OBJECTIVES: This study is a meta-analysis of prospective cohort studies comparing the impact of cardiac resynchronization therapy (CRT) for patients in atrial fibrillation (AF) and sinus rhythm (SR). BACKGROUND: Although close to one-third of advanced heart failure patients exhibit AF, the impact of CRT in this group remains unclear. METHODS: ...
Perrea Despina N - - 2011
Background: Amiodarone is a commonly used medication in the treatment of atrial fibrillation (AF) of recent onset. Study Objectives: The aim of the study was to identify a possible formula for selecting Emergency Department (ED) patients with paroxysmal AF who will spontaneously restore sinus rhythm (SR), successfully restore SR with ...
Harahsheh Ashraf - - 2008
BACKGROUND: Atrioventricular reciprocating tachycardia (AVRT) is common in patients (pts) with Wolff-Parkinson-White (WPW) syndrome but atrial flutter/fibrillation (AF) with rapid ventricular response (RVR) is rare. Although AF occurs in 18% of adult WPW pts, its incidence in children is unknown. We sought to determine risk factors for AVRT spontaneously degenerating ...
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