Active clinical trials for "Atrial Fibrillation"

This is a prospective, observational, single center pilot trial to find out if a new computerized technology for analysis of the electrical activity recorded during atrial fibrillation can identify the electrical source of this arrhythmia. If we are able to reliably identify the source, then in the future we may be able to use this technology to determine the optimal sites for catheter ablation of atrial fibrillation in the heart. The present study will compare the standard electrical recordings to the new computerized algorithm analysis of recordings gathered at the same time. The study will enroll 30 participants with persistent or longstanding persistent atrial fibrillation (AF) that are scheduled for elective catheter ablation of AF. The catheters that are being placed in the heart are standard Food and Drug Administration (FDA)-approved mapping catheters. The investigational computerized software that will be employed in the trial will be used after the case has done and will not directly impact any of the activities during the ablation procedure. Information learned from this trial will improve understanding of the mechanisms of atrial fibrillation and will potentially improve success rates of AF ablation for patients in the future and will be used to design a prospective trial.

In this study, the investigators examine whether aspirin or warfarin is useful for atrial fibrillation patients with chronic kidney disease.

This study aims to determine the sensitivity and specificity of a Personal Heart Rhythm Monitor in the detection of prolonged paroxysmal atrial fibrillation (defined as lasting more than 12 hours) against pre-existing implantable devices, seen to be the 'gold-standard' for arrhythmia detection.

The My Research Legacy Pilot Study will establish a participant registry that collects self-reported health data and answers to online survey questions about individual daily choices, diets, and exercise; data from wearable devices; and, (optional) data from genome sequencing analysis. Individuals under the age of 50 who meet eligibility criteria will answer questions using the American Heart Association's (AHA) Life's Simple 7™ My Life Check v4.0 three times over the course of 6 months and transmit data from a Fitbit Charge 2 device. All other individuals who are interested in the study and meet entry criteria may also enroll.

Prospective registry of all new comers with Atrial fibrillation

The purpose of this study is to determine the change in median radiation exposure time and median procedure time following guided radiofrequency (RF) ablation among subjects undergoing treatment for paroxysmal atrial fibrillation with either the CARTO® 3 or the NavX(TM) System. It is hypothesized that described features will reduce the median radiation exposure during the CARTO® 3 system-guided procedures compared to the NavX(TM) system-guided procedures.

His bundle pacing has been proposed as a superior alternative to standard right ventricular pacing. The purpose of this study is to investigate whether obtaining a His Bundle recording from the subclavian vein using a stylet driven pacemaker lead and commercially available sheath can be done in a quick and reliable manner. This would support the use of stylet driven leads for His bundle pacing.

The purpose of this study is to evaluate the diagnostic utility of BIOTRONIK's subcutaneous cardiac rhythm monitor for the detection of AF prior to an ablation procedure.

This is a single center, non-randomized, unblinded study of patients who are followed at Essentia Health - St. Mary's Medical Center and who are referred for a clinically indicated diagnostic electrophysiology (EP) study with or without ablation. During the procedure, events of atrial fibrillation, sinus rhythm and bundle branch block that may occur during the course of the case will be saved electronically and analyzed offline. The stored data will be evaluated off-line for changes in activation timing of the near and far field ventricular signals of the stored events. This proof-of-concept study will attempt to assess whether atrial fibrillation, or bundle branch block can change activation timing compared to baseline sinus rhythm. If no significant activation change is seen, then this finding can be used as a basis to distinguish ventricular tachycardia from atrial fibrillation in future rhythm discrimination methods.

Objective: To determine if the treatment of subclinical hyperthyroidism will reduce the rate of atrial fibrillation, the main complication of this condition.