View clinical trials related to Atrial Fibrillation.
Filter by:The purpose of this registry is to reflect on standard clinical practice in pulmonary vein cryoablation in Spanish hospitals, the different procedure protocols, details of intervention, complications, long-term follow-up strategy and results in these subjects.
The study is an analysis using the French national health insurance database, six months after the beginning of NOAC launch in the NVAF indication. The aim is to compare the one-year, two-year and three-year benefit-risk (major bleeding, arterial thrombotic events, myocardial infarction (MI), death) between patients starting a NOAC and patients starting a VKA for NVAF in 2013
This non-interventional field study will investigate rivaroxaban under clinical practice conditions for stroke prevention and for prevention of non-CNS systemic embolism in patients with non-valvular atrial fibrillation in China.
Based upon Northern New England Cardiovascular Study Group data, the rate of post operative atrial fibrillation (POAF) requiring treatment following coronary artery bypass grafting (CABG) at Maine Medical Center (MMC) is currently 30%. Nationally, POAF occurs in up to 40% of patients post CABG, 50% of patients after valve surgery, 64% of patients post mitral valve and CABG and 49% after aortic valve replacement. Atrial fibrillation worsens a patient's hemodynamic status and increases the risk of congestive heart failure (CHF), embolic events and longer ICU stays leading to increased patient morbidity and strain on financial resources. In the U.S., POAF carries a higher risk of stroke (37% OR 2.0 in-hospital mortality (OR = 1.7), worsened survival (74% versus 87%), and an additional 4.9 days and $10,000-$11,500 in hospital stay costs. Atrial fibrillation requires both an initiation trigger and favorable environment for maintenance and the sympathetic and parasympathetic nervous systems play important roles in this regard. Unfortunately, the precise mechanisms of POAF are still being investigated. This postoperative complication has persisted in spite of efforts to mitigate it pharmacologically with beta blockers and amiodarone, an experience shared by most other cardiac surgery centers. The stellate ganglion is formed by the fusion of the inferior cervical sympathetic ganglion and first thoracic sympathetic ganglion. By modulating the sympathetic component of the autonomic nervous system, stellate ganglion stimulation has been shown to facilitate induction of atrial fibrillation while ablation may reduce or prevent episodes. Human studies have further supported this model. Preliminary studies of perioperative stellate ganglion block (SGB) in cardiac surgery suggest that this technique may reduce or prevent episodes of POAF requiring treatment. The investigator's ultimate goal is to determine whether SGB reduces the incidence of POAF in specific cardiac surgery populations at MMC. First, however, the investigator proposes to test the hypothesis that SGB, performed perioperatively by cardiac anesthesiologists in a population of patients undergoing cardiac surgery, is both safe and clinically feasible.
Palpitations (noticeable pounding, fluttering or irregular heart beat) and pre-syncope (near blackout) are common ED problems sometimes due to an abnormal cardiac rhythm. This is difficult to diagnose as examination and electrocardiogram (ECG) are commonly normal and symptoms have usually resolved by the time the patient arrives in the ED. Diagnosing an abnormal heart rhythm as the cause of symptoms rests on capturing it on an ECG and patients are usually discharged with advice to return to the ED again for a 12-lead ECG should symptoms recur. The investigators will recruit 242 adult participants to either study or control arms. All study arm participants will be given an AliveCor Heart Monitor and trained in the use of the device. Control arm participants will receive standard care only. Both groups will be followed-up at 90 days. The investigators believe a smart phone based event recorder will allow better and earlier diagnosis in patients with a compatible smart phone or tablet, and revolutionise ED care in this area.
A total of 120 patients with persistent atrial fibrillation (including continuous and long-standing persistent atrial fibrillation) and 60 patients with paroxysmal atrial fibrillation will receive radiofrequency ablation. Patients in each group will be randomly allocated into the statin treatment group and non-statin treatment group (allocation ratio, 1:1). Left atrial appendage flow velocity of all patients are measured by Transesophageal Echocardiography(TEE) 24 hours before the operation. Real-time ultrasound examinations of left atrial function are carried out for all patients before the operation and after the operation. Blood samples are extracted in all patients before the operation and after the operation. This study will clarify whether the application of statin drugs can improve postoperative left atrial function. This study will identify the time course and influence factors of left atrial recovery of atrial fibrillation after the operation to guide the time and the degree of anticoagulation and effectively prevent thromboembolic events. At the same time, biochemical indicators are detected to analyze which indicators are related to the postoperative recurrence of atrial fibrillation, the incidence of postoperative thrombosis and the recovery of postoperative left atrial function. Furthermore, this study will investigate whether the application of statin drugs can improve postoperative left atrial function by affecting these indicators.
The overall objective of this proposal is to execute a real-world database analysis to evaluate hospital readmissions among hospitalized nonvalvular atrial fibrillation (NVAF) patients in the U.S.
This is a two arm randomized, paired prospective study comparing the percentage of time spent above Contact Force (CF), Force Time Integral (FTI) and other lesion parameters in the setting of pacing versus non-pacing. This study is designed to compare the percentage of time spent above CF 10 grams between paced and non-paced lesions at 15 pre-determined lesion locations.
ASSESSING THE ABILITY OF WARFARIN TREATED PATIENTS TO PREDICT THEIR INR Kathleen McNamara, James Hoehns, Matthew Witry The international normalized ratio (INR) is the accepted lab test used to measure the intensity of warfarin effect. The conventional wisdom is that patients receiving warfarin are unable to correctly determine, in the absence of an INR result, whether or not they are therapeutic at any given time. Some warfarin treated patients express that they have insight into what their INR result will be. Various patient related factors may contribute to these opinions. Our objective is to assess how accurately patients can guess their INR result before it is obtained and to describe factors which inform their opinion of what their INR will be.
To characterize treatment patterns and healthcare resource utilization among adults diagnosed with non-valvular atrial fibrillation (NVAF) from the private setting in Venezuela.