Active clinical trials for "Atrial Fibrillation"

This study will look at the correlation between ventricular rate regulation (VRR) and the percentage of biventricular pacing as well as subjective quality of life and level of physical ability in CRT patients with atrial fibrillation.

The principal purpose of this investigator-initiated trial is to study the use of the CardiaMend device soaked in the anti-arrhythmic drug amiodarone, and how it may decrease the development of atrial fibrillation in patients that have undergone a coronary artery bypass surgery, or isolated valve surgery.

Recently a combined approach of surgeon ablation in combination with endocardial ablation (hybrid ablation) has been introduced. This therapy has shown excellent results in patients with previous failed endocardial ablation for paroxysmal atrial fibrillation as well in patients with persistent atrial fibrillation. The investigators hypothesize that the severity of atrial remodeling in patients with atrial fibrillation can be measured by clinical factors, echocardiographic parameters, circulating biomarkers and genetic background, and that these factors can be used to identify a risk profile to predict failure of the hybrid ablation therapy in patients with atrial fibrillation. Aim of this study is to determine a risk profile based on clinical correlates, circulating biomarkers, and genetic background associated with failure of the hybrid ablation procedure, in a prospective single center registry setting. The investigators evaluate all consecutive patients who have agreed to undergo the hybrid ablation procedure because of atrial fibrillation. The investigators aim for a total of 250 participants. Extra study related procedures include blood sampling for biomarkers and genetic analysis, prolonged Holter monitoring for documentation of recurrences of atrial fibrillation/atrial flutter/atrial tachycardias, and a quality of life questionnaire. Total follow-up will be five years. Main study endpoint is failure of the hybrid ablation procedure in patients with atrial fibrillation, i.e. any (a)symptomatic atrial fibrillation/atrial flutter/atrial tachycardia >30sec without anti-arrhythmic drugs at one year of follow-up by ECG recording and 3-day Holter monitoring.

This is a prospective, random controlled trial(RCT) study. 430 patients undergoing coronary artery bypass grafting were enrolled. Our new way of cardiac denervation, defined as excision of Marshall ligament and Waterstone fat pad, was performed in 215 patients, and the other 215 patients were used as control subjects. All the patients need to equip with electronic monitor to record heart rhythms within 6 days after CABG. The investigators will compare the incidence of postoperative atrial fibrillation between two groups, and follow up 30 days after discharged.

This study is a single-center, prospective, randomized, open-label trial of subjects who develop atrial fibrillation after non-emergent cardiac surgery at the University of Kentucky Chandler Medical Center (UKCMC). Patients will be randomized to receive either a conventional amiodarone dosing regimen (CDR) or a repeated amiodarone bolus dosing regimen (RBDR).

The aim of the study is the comparison of two different leads in their capabilities to detect episodes and duration of paroxysmal atrial fibrillation (AF) and atrial tachyarrhythmia (AT), and the rejection of far field sensing of the far field R-wave (FFRW).

Of the 19,000 pacemakers implanted across Canada in 2002, 1/3 of them were for patients 80 years and older. This is the fastest growing segment of our population, yet no study has specifically been done in this age group to determine the optimal pacing mode. We wish to determine whether dual chamber or single chamber pacing is associated with a reduction in emergency room visits or hospitalizations for cardiovascular causes (e.g., congestive heart failure (CHF), atrial fibrillation (AF)) resulting in improved quality of life.

Atrial fibrillation (AF) is a common heart rhythm disorder in the intensive care unit (ICU). It can be precipitated by multiple factors but it is unclear whether AF persists after discharge from the ICU, and long term. This study will investigate whether AF recurs up to one year after ICU discharge.

The purpose of this study is to predict the occurrence of paroxysmal atrial fibrillation by finding high-risk group from normal sinus rhythm ECG through artificial intelligence-based prediction algorithm.

After cardiac surgery, there is a high prevalence of postoperative atrial fibrillation (POAF). However, its diagnostic and therapeutic management is poorly codified. This pathology is caused by atrial abnormalities which form the concept of atrial cardiomyopathy. New tools affording to itemize the atrial cardiomyopathy are needed. Indeed, current tools, as echocardiography and electrocardiogram are relevant but only lead to a raw evaluation of the atrial cardiomyopathy. MRI, because of the assessment of the atrial fibrosis by late gadolinium assessment (LGE) and 4D flow magnetic resonance imaging (MRI) could be relevant to specify the atrial cardiomyopathy.