نتایج جستجو برای: atrial fibrillation
تعداد نتایج: 104160 فیلتر نتایج به سال:
Introduction The result of surgical ablation of atrial fibrillation remains controversial, although prospective and randomized studies have shown significant differences in the return to sinus rhythm in patients treated with ablation versus control group. Surgery of the Labyrinth, proposed by Cox and colleagues, is complex and increases the morbidity rate. Therefore, studies are needed to confi...
Objective: Alterations in serum levels of sodium may lead to cardiac arrhythmia by affecting the membrane potentials of cardiac cells. Previous studies have documented the association between postoperative atrial fibrillation and reduction in serum magnesium level after cardiovascular surgery well. However, there is no study assessing the relationship between serum sodium concentration and atri...
BACKGROUND Atrial fibrillation in the elderly is common and potentially life threatening. The classical sign of atrial fibrillation is an irregularly irregular pulse. OBJECTIVE The objective of this research was to determine the accuracy of pulse palpation to detect atrial fibrillation. METHODS We searched Medline, EMBASE, and the reference lists of review articles for studies that compared...
Atrial fibrillation is a heterogeneous disorder that is usually characterized by paroxysmal onset, particularly in patients without structural heart disease. Defining biological markers of atrial remodelling would help identify patients at high risk who would benefit most from prophylactic treatment and careful monitoring. Biomarkers of atrial fibrillation progression would be helpful for follo...
atrial fibrillation during vagal nerve stimulation in the canine heart: restudying the Moe hypothesis. J Cardiovasc Electrophysiol 2013;24:328–35. 14. Haissaguerre M, Jais P, Shah DC, Takahashi A, Hocini M, Quiniou G et al. Spontaneous initiation of atrial fibrillation by ectopic beats originating in the pulmonary veins. N Engl J Med 1998;339:659–66. 15. Sahadevan J, Ryu K, Peltz L, Khrestian C...
Background. The goal of the report was to study the long-term incidence and the independent predictors for chronic atrial fibrillation and stroke in 507 paced patients with sick sinus syndrome, adjusting for differences in baseline clinical variables with multivariate analysis. Methods and Results. From 1980 to 1989, we implanted 376 dual-chamber, 19 atrial, and 112 ventricular pacemakers to tr...
BACKGROUND Antiarrhythmic drugs are considered to terminate atrial fibrillation by prolonging refractoriness, but direct experimental evaluation of this concept has been limited. The atria are activated rapidly during atrial fibrillation, and antiarrhythmic drugs are known to have important rate-dependent actions. The potential role of such properties in determining drug effects during atrial f...
The aim of this study was to explore the changes in gene and protein expressions of tyrosine hydroxylase (TH) and growth-associated protein 43 (GAP43) in aging atrial fibrillation patients of Xinjiang Uygur and Han nationality, and the significance of the changes. Real-time polymerase chain reaction and Western blot analysis were used to detect gene and protein expressions of TH and GAP43 in at...
Objective: To assess long term mortality and identify factors associated with the development of permanent atrial fibrillation after atrioventricular (AV) node ablation for drug refractory paroxysmal atrial fibrillation. Design: Retrospective cohort study. Setting: UK tertiary centre teaching hospital. Patients: Patients admitted to the University Hospital Birmingham between January 1995 and De...
OBJECTIVE Using P-wave signal-averaged electrocardiography, we assessed the patterns of atrial electrical activation in patients with idiopathic atrial fibrillation as compared with patterns in patients with atrial fibrillation associated with structural heart disease. METHODS Eighty patients with recurrent paroxysmal atrial fibrillation were divided into 3 groups as follows: group I - 40 pat...
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