Active clinical trials for "Heart Valve Diseases"

Prospective, non-randomized, multicenter post-approval study to collect long term clinical and echographic data on Mitroflow DL patients.

The purpose of this clinical study is to determine if there is an increased incidence and rate of aortic regurgitation in younger (</= 70 years of age) patients implanted with the Model 1000 and undergoing isolated aortic valve replacement of his/her native aortic valve, or replacement of a failed prosthesis.

Mechanical heart valves (MHV) demand lifelong anticoagulation with vitamin K antagonists (VKA) due to the high thrombogenicity of the prosthesis. Rivaroxaban has previously been tested in experimental and animal models with encouraging results. The investigators recently sent for publication an experiment with 7 patients who used rivaroxaban in metallic prosthesis with encouraging results. In this way it was decided to do a randomized non-inferiority clinical trial comparing rivaroxaban with warfarin in patients with metallic prosthesis.

The specific aims of this study are to: Establish baseline levels of circulating MMP-2 and -9 , TIMP-1and- 2 and TGFB levels in individuals with bicuspid aortic valve and ascending aortic or aortic sinus measurements >40mm. Assess the effect on MMP levels during treatment with losartan, an angiotensin II receptor blocking agent. In the setting of losartan therapy for one year, evaluate the response of MMP levels in these patients, and clinical outcomes including effects on aortic growth rate

The Cardioband Transcatheter System (Cardioband) is indicated for the treatment of secondary (functional) mitral regurgitation (FMR). The Cardioband is a transcatheter system, deployed on the beating heart through a transseptal approach. The Cardioband is deployed along the posterior annulus of the mitral valve (MV) and is adjusted under trans-esophageal guidance on the beating heart. A CE mark study with 30 subjects has been completed and documented reduction of severity of mitral regurgitation (MR) and improvement in 6- minute walk test in subjects with moderate to severe MR. Study objectives are to test the efficacy of the Cardioband in improving MR and heart failure symptoms in patients with symptomatic (New York Heart Association (NYHA) Class III-IVa), severe MR in the post-marketing setting, And to evaluate the safety of the Cardioband system in the post-marketing setting.

The objective of this study is to evaluate feasibility, safety and effectiveness of the first generation transfemoral JenaValve Pericardial TAVR System (formerly named JenaValve TAVI Plus System- Transfemoral) in an elderly patient population with severe aortic stenosis who are at high risk for surgical aortic valve replacement.

The objective of our research is to determine whether treatment with magnesium will reduce the incidence of atrial fibrillation in patients undergoing cardiac surgery. Several small studies of magnesium have already been conducted, but these studies were small and the results conflicting. A large, well-conducted study of magnesium treatment is required to definitively determine whether magnesium is effective in preventing this common complication after surgery. In addition, our study will include patients undergoing valvular surgery, a group previously excluded from research despite the fact that they are at increased risk of atrial fibrillation.

The purpose of this study is to determine if performed force measurements yield a different recommended weight lifted during the sternotomy healing process than the traditional gold standard of 5 pounds. A secondary endpoint data obtained will be scores from the pre and post-activity questionnaires.

This study evaluates the enhanced recovery after surgery (ERAS) concept over conventional postoperative care in patients with heart valve disease undergoing cardiac surgery with cardiopulmonary bypass. Half of participants will adherence to the ERAS, while the other half will under the conventional postoperative care.

The prevalence of AF, which is tachyarrhythmia, is approximately 2% of the entire population and 5% of the population at the age of 60 or older. AF is the cause of approximately 20% of all events of ischemic stroke, and patients with AF are known to be at 6 to 10% risk of ischemic stroke per year. Patients with valvular AF are known to have a higher incidence of stroke than patients with nonvalvular AF. However, the relevant data are insufficient as large randomized studies comparing NOAC treatment with warfarin, a conventional treatment, did not include many patients with moderate and severe valvular AF. Ischemic stroke is divided into symptomatic stroke with brain lesions on brain magnetic resonance imaging (MRI) and silent cerebral infarct with lesions on brain MRI but without stroke symptoms. According to a brain MRI follow-up study, the incidence of silent cerebral infarct was 17.7% (254 subjects) over a period of 5 years, with 11.4% of 254 subjects reporting to have experienced symptoms. This means that the incidence of silent cerebral infarct is approximately 9 times that of symptomatic stroke. In addition, patients with a history of silent cerebral infarct are known to be approximately twice more likely to experience stroke in the future than those without a history of silent. Brain microbleed is easily detected by brain MRI and is a well-known independent predictor of intraparenchymal hemorrhage and silent cerebral infarct. The prevention of stroke by the study drug can be indirectly assessed based on the incidence of silent cerebral infarct and brain microbleed on brain MRI. Investigators tried to compare effect of dabigatran with conventional treatment in terms of prevention of stroke by comparing incidences of silent cerebral infarct and brain microbleed and symptomatic stroke using brain MRI.