Active clinical trials for "Atrial Fibrillation"

Vitamin K-antagonists (VKA) such as warfarin are the most widely used blood thinners for irregular heart beats like atrial fibrillation. Several lines of evidence indicate, however, that these agents also cause calcification of vessels (hardening of the vessels). Vascular calcification is one of the recently revealed side-effects of warfarin therapy. We will be randomizing 66 patients to either take warfarin or a new blood thinner that works without affecting vitamin k (apixaban). Patients will undergo blood testing and a CT angiogram (non-invasive angiogram) at the beginning of the study, and then be followed for one year with quarterly visits including blood tests and given either warfarin or vitamin K. After one year, they will undergo another CT angiogram and examination and blood tests and the effect of apixaban and warfarin are tested to look at plaque and changes over time. Patients will be consented in a private room and the risks and benefits will be explained. The risks include the CT angiogram and the possibility of either remaining on warfarin therapy for another year (standard of care) or taking a medicine that doesn't require monitoring (apixaban) for one year. The CT angiograms will require some contrast and some radiation dose, which will be minimized as much as possible. A cardiologist will be present during each CT angiogram to minimize risk and ensure patient safety.

The VICTORIA Study (Vascular CalcIfiCation and sTiffness induced by ORal antIcoAgulation) is a comparative, parallel, prospective, controlled and randomized study of the structural and functional impact of rivaroxaban versus anti-vitamin K drugs on the arterial vasculature.

The purpose of this exploratory study is to evaluate the safety of rivaroxaban and uninterrupted vitamin K antagonist (VKA) in adult participants with non-valvular atrial fibrillation (NVAF) who undergo catheter ablation as measured by post-procedure major bleeding events.

Colchicine will lower C-reactive protein (CRP) in chronic atrial fibrillation and reduce the rise in CRP which occurs following atrial fibrillation ablation

The purpose of the study is to determine the permanency of PV isolation with the Arctic Front Advance cryoablation system in paroxysmal AF patients. It will also provide data on acute procedural outcomes and measures as well as clinical AF recurrence in these patients approximately 3 months post-ablation.

The purpose of this study is to assess the safety and technical feasibility of treating subjects with Persistent Atrial Fibrillation or Longstanding Persistent Atrial Fibrillation in a minimally invasive thoracoscopic ablation procedure utilizing the AtriCure Bipolar System, with mapping and additional lesion creation/ gap closure (as needed) provided by currently approved catheter technology, when the epicardial and endocardial phases are performed in a staged manner within 1-10 days apart, during the same hospitalization.

The objective of the H-FIB trial is to determine the role of renal sympathetic denervation in the prevention of Atrial Fibrillation (AF) recurrence in patients with hypertension for whom a catheter-based AF ablation procedure is planned. Patients will be randomized to either AF catheter ablation (usual therapy) or AF catheter ablation plus renal sympathetic denervation.

The proposed study is designed to evaluate the effect of an intravenous infusion of magnesium sulfate in facilitating successful cardioversion of atrial fibrillation and in decreasing the energy threshold (in J) required for successful cardioversion of atrial fibrillation into sinus rhythm.

Aim of the study is to compare the safety and efficacy of pulmonary vein isolation using the endoscopic ablation system in comparison to irrigated radiofrequency current ablation in patients with drug-refractory persistent atrial fibrillation.

The objective of this investigation is to evaluate whether pulmonary vein isolation using the VytronUS ablation system is safe and effective acutely and at 3 months.