Active clinical trials for "Atrial Fibrillation"

This study aimed at evaluating multiple aspects of biatrial contractility recovery after modified maze procedure during mitral valve surgery.

This is a registry to assess the safety and effectiveness of FIRM guided procedures for the treatment of symptomatic any type of atrial fibrillation. FIRM (Focal Impulse and Rotor Modulation) guided ablation is defined as ablating rotors identified by the FIRMap® basket catheter for visualising of rotors with the RhythmView® mapping system. In addition to the FIRM guided ablation any other ablation method could be applied.The acute success of FIRM ablations is defined as elimination of rotors defined by absence of rotors. Data items will be collected, if available, consistent and applicable with routine and standard clinical care at each participating site.

This was a prospective, multicenter, observational, nonrandomized study to compile real world outcome data on the use of the Amulet™ device in non-valvular atrial fibrillation (NVAF) subjects. The study was designed to follow the Instructions For Use (IFU) to gather data on the implant procedure through two years of follow up with the Amulet™ device in a commercial clinical setting."

Postoperative bleeding is a common consequence after heart surgery which can significantly impact outcomes and costs . When bleeding occurs, reliable postoperative blood evacuation of the pleural, mediastinal and pericardial spaces with chest tubes is imperative to facilitate pulmonary reexpansion and mediastinal decompression as the patient recovers. When postoperative blood evacuation is inadequate, complications from retained blood can result. Clinically, retained blood may be recognized acutely or sub acutely. The acute clinical presentation is usually blood and fresh thrombus around the heart or lungs presenting as tamponade or hemothorax. The subacute clinical presentation is bloody pleural or pericardial effusions. These effusions are often driven by the breakdown of remaining thrombus. Once retained blood occurs, subsequent procedures may be needed to remedy it. Interventions to remove postoperative pericardial and/or pleural fluid or blood and reoperations due to bleeding are captured under a composite termed Retained Blood Syndrome, or RBS. The need for treatment and interventions for these conditions represents an impediment to patient recovery and involves both resource and economic consumption for a heart program and the healthcare system at large. A recent review of the literature indicates that additional procedures for RBS are demonstrated in approximately 15% to 20% of patients after heart surgery. In a prospectively collected US Nationwide Inpatient Sample (NIS) data from 2010, RBS could be demonstrated in 17% of patients. In this analysis, mortality was doubled from 4% to 8%, length of stay was increased by 5 days, and average costs were 55% higher. Patients with RBS, therefore, represent an increased at-risk population for complications and costs. Postoperative obstruction of conventional chest tubes with blood and other fibrinous material in the setting of postoperative bleeding contributes to RBS. In a study of postoperative cardiac surgery patients at the Cleveland Clinic, 36% of patients were found to have evidence of chest tube obstruction. Active Clearance with PleuraFlow has been shown to prevent chest tube clogging, and reduce RBS. The purpose of this registry is to evaluate the effectiveness of the PleuraFlow System, a commercial Class II (US), Class IIb (Canada, Europe, and Australia), in the management of blood evacuation after cardiac surgery.

The aim of this study is to evaluate the role of atrial fibrillation (AF) and its treatment in relation to thromboembolic events (stroke, and transient ischemic attacks) and intracranial hemorrhage. Primary Outcome Measures: - Incidence and timing of intracranial complications (stroke,TIA, bleedings) in relation to diagnosis and anticoagulation treatment of AF during the study period; comparison of complications between those with and without anticoagulation treatment according to CHADSVASc score. Secondary Outcome Measures: The effect of anticoagulation pauses and INR level on stroke and bleeding risk; strokes within 30 days after anticoagulation pause and the prevalence of stroke and intracranila bleeding in relation to INR level < 2, 2-3 and >3. Trauma as a risk factor for intracranial bleeding: percentage and risk factors for intracranial bleeding with or without trauma. Type of preceding trauma and type of intracranial bleeding. The time relation between diagnosis of AF and type of intracranial complications: Kaplan Meier analysis of thrombotic (Stroke/TIA) and intracranial bleeding complications after 1st diagnosis of AF in patients with and without anticoagulation The risk of stroke and intracranial bleeding in relation to CHADSVASc score, HAS-BLED score and anticoagulation/antithrombotic treatment Prognosis of stroke and intracranial bleeding: 30-day mortality after stroke and intracerebral bleeding in patients with and without anticoagulation Factors related to underuse of anticoagulation treatment. Data on reasons for not starting or stopping aticoagulation in those with indication of oral anticoagulation Operations and procedure as risk factor for stroke: Frequency and type of operations performed < 30 days before stroke. Data on length of perioperative pause in anticoagulation and use of bridging therapy and timiing of stroke are collected. Cardioversions as a risk factor for stroke: Frequency of stroke and TIA < 30 days after cardioversion in relation to use of anticoagulation and CHADSVASc score The risk of stroke and intracranial bleeding in relation to type of AF (permanent, persistent, paroxysmal) and concomitant carotid disease Estimated Enrollment: 6000 patients.

Clopidogrel besylate (CB) is not differentiated relative to the orignal clopidogrel hydrogen sulfate (CHS) in the pharmacokinetics and in antiplatelet potency in healthy volunteers. In addition,CB exhibits similar pharmacodynamic properties compared to CHS in patients with a history of acute coronary syndrome (ACS) and in patients with ACS undergoing percutaneous coronary intervention (PCI). However, there is a lack of data on the clinical efficacy and safety of this salt to the original salt in patients with cardiovascular disease. The aim of this study is to investigate the clinical efficacy and safety of CB in relation to that of CHS in patients eligible to receive clopidogrel.

An intervention program targeting patients and caregivers based on education about their condition and training in the use of portable coagulomenter to self monitor and training on the treatment adjustment to self manage, can be effective to enable patients in OACs to self manage as well as to identify determinant factors associated with the success and failure of the program.

This is a prospective, non-interventional, open-label, multi-centre study. It will provide additional safety information of Pradaxa in Korean patients with non-valvular AF in clinical settings.

The purpose of this study is to evaluate the management of chronic heart failure patients with atrial fibrillation, to collect data on compliance with clinical guidelines and the prevalence of long-term anticoagulant therapy,complications. The results will be used to develop most rational therapeutic and diagnostic strategies to improve clinical outcomes of such patients.

The Outcomes Registry for Better Informed Treatment of Atrial Fibrillation (ORBIT-AF II) is a multicenter, prospective outpatient disease registry to evaluate the utilization of target-specific antithrombotic agents, such as FXa (factor Xa) inhibitors and direct thrombin inhibitors, and associated outcomes. Importantly, the ORBIT AF II registry will permit the collection and analysis of post-approval observational data needed for evaluating the outcomes associated with these new agents when used in broader patient populations outside of clinical studies. The ORBIT-AF II registry will focus on patients with newly diagnosed atrial fibrillation (AF) as well as those who have been recently started on a target-specific oral anticoagulant agent. Taken together, the ORBIT-AF I and ORBIT-AF II registries will offer a broad and contemporary view of AF therapy.