View clinical trials related to Mitral Valve Stenosis.
Filter by:Vasoconstrictive signaling via endothelin receptors is not limited to primary pulmonary arterial hypertension, but has also been documented in secondary pulmonary hypertension due to congestive heart failure, including cardiac valve disease. The investigators aim to examine the clinical and physiologic effects of bosentan therapy in patients with secondary pulmonary hypertension due to severe, inoperable cardiac valve disease, using a single-center, prospective, open-label, non-randomized study of oral bosentan in outpatients with severe mitral stenosis due to childhood rheumatoid fever. Primary end-point will be exercise capacity at six months determined by six-minute walking distance and cardiopulmonary exercise testing. Secondary end-points will be symptomatic relief, echocardiographic left ventricular function and pulmonary pressure, serum pro-brain natriuretic peptide, and adverse events at six months.
General and specific objectives of the search: evaluate the effects of the administration of Antithrombin III (ATIII) on the activation of the coagulation system and of the fibrinolysis, platelet function, inflammatory response and markers of organ damage in patients undergoing cardiac surgery by cardiopulmonary bypass (CPB) with low plasma levels of post-operative Antithrombin (AT).
The purpose of this study is to study the effect of Ivabradine vs Atenolol on heart rate and effort tolerance in patients with mild to moderate mitral stenosis and normal sinus rhythm.
The purpose of the research is to determine whether treating atrial fibrillation with surgical ablation during scheduled mitral valve surgery is better than mitral valve surgery by itself without the surgical ablation. Surgical ablation of atrial fibrillation is a technique used by surgeons to deaden atrial heart tissue and block electrical signals that may be causing your heart to beat irregularly. There are no new procedures being tested in this study; both mitral valve surgery and surgical ablation are used regularly in patients who have mitral valve problems and atrial fibrillation, although no surgical ablation devices have been approved by the Food and Drug Administration for the treatment of atrial fibrillation. What is not known with certainty, is whether patients with atrial fibrillation who are having planned mitral valve surgery would do better if they also had surgical ablation rather than medication alone to treat their atrial fibrillation.
To compare mitral valve area in rheumatic mitral valve stenosis with cardiac magnetic resonance imaging and conventional transthoracic echocardiography.
The purpose of this study is to further evaluate the long-term safety and effectiveness of the Biocor and Biocor Supra Valves.
To use a new statistical method, the Logical Analysis of Data (LAD), to predict cardiac surgery risk.
To establish a registry in order to collect and analyze baseline and outcome data on patients with severe valvular stenosis treated with balloon valvuloplasty.