Active clinical trials for "Atrial Fibrillation"

Atrial fibrillation(AF) often occurs in patients with mitral valve disease. Both mitral replacement and mitral valve plasty are the effective methods to the mitral valve disease. How to cure atrial fibrillation is the key to full recovery. Radiofrequency ablation (RFA) in surgery is an effective treatment for those patients. But there are some recurrence rate after RFA, particularly in patients with enlarged left atrium. So the investigators design a new procedure(Left Atrial Geometric Volume Reduction, Pulmonary Vein Island Isolation and Left Appendage Base Closure) during mitral surgery and study the outcomes to evaluate this new operation.

The study consists of 3 parts (Part A, Part B and Part C). Part A was an open-label, randomized, multi center design to evaluate the feasibility of administration of inhaled flecainide in two dosing regimens. Part B was an open-label, multicenter design to confirm the safety (including tolerability) and efficacy of the optimal inhaled flecainide dose determined from Part A. Part C is currently ongoing and is an open-label, multi center study with exploratory objectives to explore the feasibility of patient-led self administration of flecainide. Part C also includes an exploratory sub-study to assess the feasibility of implementing a portable cardiac ultrasound (HHE) at screening in an emergent setting.

Multi-center, open label, prospective clinical study to establish the acute safety and performance of the Cryterion Cardiac Cryoablation System

This is a multi-center, randomized, double-blind, placebo-controlled, parallel group, dose-ranging study to evaluate the efficacy and safety of botulinum toxin type A (AGN-151607) injections into the epicardial fat pads, foci of ganglionic plexi, to prevent Post-Operative Atrial Fibrillation (POAF) in patients undergoing open-chest cardiac surgery.

To determine the feasibility of a controlled trial examining the efficacy and safety of non-vitamin K antagonist oral anticoagulants (NOACs) compared with ASA for stroke prevention in patients with a high-risk of atrial fibrillation and previous intracerebral hemorrhage.

This is a clinical study where the investigators will assess the efficacy of a single cryoballoon application per vein guided by a multipolar recording catheter as compared with a conventional technique with 2 cryoballoon applications for pulmonary vein isolation (PVI) in patients with atrial fibrillation (AF).

The purpose of this study is to determine if additional ablation during the first procedure as the result of the ability to medically induce quiet atrial arrhythmias will improve clinical outcome in patients with atrial fibrillation thus decreasing the need for additional ablation procedures.

The purpose of this feasibility study is to further explore characteristics of ablation targets identified by CARTOFINDER 4D LAT Algorithm in subjects with persistent atrial fibrillation and to assess the acute outcome of CARTOFINDER Guided Ablation in terms of the termination of atrial fibrillation to either Normal Sinus Rhythm or Atrial Tachycardia.

This is a single center, open label, randomized control trial to assess the efficacy of a one-lead ECG handheld device (Zenicor) for the detection of previously unknown atrial fibrillation (AF) in hospitalized patients. All patients admitted to the internal medicine department of the Hospital Fribourg throughout the study period will be screened for study enrollment. Patients < 18 years, with known or previously documented atrial fibrillation, patients with a cardiac pacemaker, and implantable cardioverter-defibrillator or intra-cardiac monitoring device will be excluded from the present trial. The study population will consist of approximately 800 patients in each group at the University of Fribourg Medical Center. Patients must meet all eligibility criteria for inclusion into the study. Patients allocated to the treatment group will undergo twice daily monitoring with the handheld Zenicor ECG. Additional recordings will be obtained whenever patients notice palpitations. Recordings will be obtained in the presence of specially trained nurses. The recordings will then be validated through a web-based interface offered by Zenicor. The one-lead ECGs will be reviewed by the investigating physicians through the Web-based analysis service (Zenicor-ECG Doctor System) to assess the presence of atrial fibrillation. The primary end point of the study is the percentage of newly detected atrial fibrillation at 6 months

The I-STOP-Afib study will test the comparative effectiveness of using N-of-1 trials vs. symptom surveillance alone to reduce Atrial Fibrillation (AF) episode frequency and severity and improve quality of life for AF patients. The study will involve randomizing almost 500 paroxysmal AF patients to either AF episode tracking versus engaging in testing the relationship between participant-selected triggers and AF episodes utilizing a mobile-app based N-of-1 study design. Both groups will complete a validated survey to assess AF severity, essentially a measure of quality of life while living with AF, before and after a 3 month testing period.