Active clinical trials for "Atrial Fibrillation"

A randomized trial has recently demonstrated non-inferiority of cryoballoon vs. radiofrequency (RF) catheter ablation in patients with drug-refractory paroxysmal atrial fibrillation (AF). There is a growing amount of evidence suggesting that Cryoballoon ablation is highly effective also in non-paroxysmal atrial fibrillation. The IRON-ICE trial will evaluate the effect of Cryoballoon AF ablation in patients with short-term persistent AF.

Atrial fibrillation (AF) is the most common arrhythmia encountered in clinical practice. Previous studies have shown that rate control strategy in AF is non-inferior to rhythm control strategy, in terms of stroke and mortality risk. In addition, rate control strategy is associated with lower risk of hospitalization and non-cardiovascular mortality. Therefore, rate control is an essential strategy to improve quality of life, decrease morbidity and prevent tachycardia-induced cardiomyopathy in AF patients. The recommended rate control agents include beta-blocker, nondihydropyridine calcium-channel blocker (CCB), digoxin and amiodarone. However, in heart failure with reduced ejection fraction patient, the medication of rate control were beta-blocker than digoxin. But several clinical observation study show excess mortality in AF patients. Ivabradine, a If inhibitor, it is well-established that a pacemaker current, If current, is functionally expressed in the sinus node . Previous studies have shown that Ivabradine, If inhibitor, significantly reduces sinus rate and improves prognosis in patients with systolic heart failure. Interestingly, several investigators found that hyperpolarization- activated cyclic nucleotidylated channel 4 current (HCN4), the main isoform of the channel responsible for If current, is also functionally expressed in the Atrioventricular node(AV node). Recent data have shown that inhibition of If current slows AV node conduction in animals and humans. Thus, we want to compare the effect of Ivabradine on ventricular rate with digoxin in this study.

The aim of the present study is to compare the safety and short-term performance between THERMOCOOL SMARTTOUCH SF-5D QDOT system used with fast ablation mode and the standard Thermocool Smartouch SF in treatment of patients with atrial fibrillation (AF).

The study aims to investigate the short-term (3 months) and intermediate-term (12 months) safety and preliminary efficacy of stereotactic radiotherapy for pulmonary vein isolation to treat refractory atrial fibrillation.

BACKGROUND AND RATIONALE Two out of three Americans are overweight and obesity is associated with hypertension, sleep apnea, atrial fibrillation. Metabolic syndrome with centripetal obesity is also a precursor to insulin resistance and the development of Type II diabetes mellitus. While multiple strategies for weight reduction are often recommended in physician visits, calculating calories and energy expenditure is often inconvenient and does not promote compliance. Intermittent fasting, or time-restricted eating, is a methods to limit caloric intake by fasting for 16 hours to promote ketosis and suppress insulin secretion. Weight loss and reduction in body fat has been observed with brief periods of intervention as time-restricted eating results in reduction in overall caloric intake. Prospective feasibility studies and randomized comparative trials with intermittent fasting are lacking. The investigators recommend caloric restriction in all of our patients that suffer from arrhythmias and BMI >30. However, they have not systematically measured compliance and the efficacy of lifestyle interventions. Lifestyle counseling and weight loss has been shown to decrease the progression and burden of symptomatic atrial fibrillation. Intermittent fasting can result in consistent reductions in body fat and weight without specific lifestyle counseling. The aim of the present observation cohort study is to assess the feasibility of recommending intermittent fasting in an arrhythmia clinic with regard to compliance and efficacy. The investigators hypothesize that compliance and adherence to a 16/8 intermittent fasting regimen will be >25% and result in weight loss, compared to the 6 month trend prior to the intervention. This pilot study will serve as the basis to power the first randomized trial comparing intermittent fasting with other types of dietary counseling for arrhythmia outcomes. OBJECTIVES To prospectively assess compliance to prescribed intermittent fasting, measured by adherence and change in weight at 6 months.

Atrial fibrillation and inflammation are strongly correlated. The aim of this study is to evaluate whether inflammation markers (alpha Defensin) predict maintenance of sinus rhythm following cardioversion. A secondary aim is to evaluate the role of Colchicine, an anti-inflammatory medication, in reducing the recurrence rate of atrial fibrillation.

This study is designed to investigate the role of lipids/lipoproteins as a potential cause for the harmful changes seen in fibrin clot properties with renal dysfunction and atrial fibrillation

to Evaluate the Efficacy and Safety of CKD-825 in Patients With Atrial Fibrillation

This will be a prospective, single-blinded, three-center, randomized, controlled trial comparing the effectiveness and safety of angioplasty guidewire-assisted transseptal puncture (GW-TSP) technique to transseptal left atrial (LA) access with conventional transseptal puncture with standard transseptal equipment (CON-TSP) in patients undergoing left atrial appendage occlusion (LAAO) procedure for atrial fibrillation. The targeted population will consist of patients with atrial fibrillation undergoing LAAO.

The investigators hypothesized that heated humidified high-flow nasal cannula oxygen(HFNC) along with high quality of sleep, in comparison with noninvasive positive pressure ventilation (NIV), could reduce the release of inflammatory marker C-reactive protein(CRP), which as independent predictor of atrial fibrillation（AF）, further lower the incidence of new-onset AF following coronary artery bypass grafting(CABG).