Active clinical trials for "Aortic Valve Stenosis"

The objective of this study is to evaluate the effect of annular sizing strategy (MDCT versus TEE) in transcatheter aortic valve implantation on the prevalence and severity of paravalvular regurgitation.

This study will determine whether Ataciguat (HMR1766) is well-tolerated in patients with mild to moderate calcific aortic valve stenosis. The primary focus of these studies will be on changes in blood pressure and orthostatic tolerance (i.e., ability to stand up without passing out), and determining whether treatment with Ataciguat results in significant reductions in blood pressure in this patient population.

Aortic stenosis is a common valvular heart disease, affecting mainly people over age 60. It is characterized by years to decades of slow progression followed by rapid clinical deterioration and a high death rate once symptoms develop. The onset of symptoms confers a poor prognosis: patients die within an average of five years after the onset of angina, three years after the onset of syncope, and two years after the onset of heart failure symptoms. The overall mortality rate is 75% at three years without surgery. Drug therapy for it remains ineffective, and aortic valve replacement is the only recommended long-term treatment.

Transcatheter Aortic Valve Implantation (TAVI) using femoral access is an option for definitive treatment of aortic stenosis when open-heart surgery is considered inappropriate. By avoiding the effects of cardiopulmonary bypass on cerebral hemodynamics and microembolic load, TAVI is assumed to be beneficial regarding risk for neurological complications. We anticipated that the extensive endovascular retrograde manipulation in ascending aorta and aortic root would generate a detectable cerebral microembolic load, and thus an increase in serological markers of neuronal injury postoperatively. Our hypothesis is that there is a positive correlation between the total amount of cerebral microembolic events during the TAVI procedure and the Area under curve (AUC24hrs) for the release pattern of two markers of neuronal injury. We also wish to describe the extent and distribution of microembolisms during the TAVI procedure using Transcranial Doppler (TCD).

This study will further assess the performance and safety profile of the commercially available Portico Valve implanted, using the Delivery System and the Loading System, in patients with severe symptomatic aortic stenosis through 5 years of follow-up.

Purpose To characterize the safety and clinical benefit of the Engager Transcatheter Aortic Valve Implantation System in a real world environment. Design Prospective non-randomized, non-interventional, multicenter, single-arm, post-market study. 250 Patients will have the Engager bioprosthesis implanted. Patients will be followed at 1 month, 6 months, and 12 months after the procedure. The recruitment period will be approximately 12 months, so the total study duration will be 24 months.

Background: Computed tomography (CT) creates three-dimensional images based on X-ray imaging. CT is useful for determining treatment approaches for certain diseases, such as calcific aortic stenosis (narrowing of the aorta because of calcium deposits). Comparing the data received from CT scans with the data received from heart catheterization (which assesses the heart's condition and function) can be used to improve treatment in patients with certain heart conditions. Researchers are interested in looking at the effectiveness of both procedures in assessing possible surgical treatments for patients with calcific aortic stenosis. Objectives: - To analyze cardiac CT scans in conjunction with existing heart scan results to improve treatments for future minimally invasive aortic valve replacement. Eligibility: - Patients 18 years of age and older who have been diagnosed with aortic valve stenosis that may be treated surgically, and who will undergo or have recently undergone heart catheterization. Design: Participants will have a CT scan within 90 days of the medically necessary heart catheterization, but before any other surgical or catheter treatment. During the CT scan, patients will be asked to hold their breath intermittently for about 5 to 20 seconds. Patients will be inside the scanner for less than 30 minutes. Patients will be asked to return in 3 to 7 days for a blood test to check kidney function. Researchers will analyze the results of the CT scan in conjunction with the previous results from the catheterization to determine possible improved treatment options.

To create a registry of all Oregon children undergoing surgical repair of congenital heart disease since 1958 in order to determine mortality, morbidity, and disability after surgery and to assess the safety of pregnancy in women with corrected congenital heart disease and the risk of prematurity and occurrence of congenital heart defects in offspring.

Prospective, multicenter registry in patients undergoing commercially available balloon expandable valve implantation. The registry will consist of 3 phases: Prospective determination of baseline Status Quo (3 months): Documentation of treatment pathways and endpoints of "routine" patients without educational program Dedicated reflection and training (1 day): One training session after the observational period to reflect on treatment pathways, exchange between valve coordinators involved, and develop improvements. Implementation of tailored changes (2 months): Implementation of the changes developed in the training. Determination of the effect (3 months): Coordinator measures optimization changes and determines effects.

Until a few years ago the only interventional option available for severe aortic stenosis was surgical aortic valve replacement. About a decade ago, a novel percutaneous technique was applied for the first time in humans, the transcatheter aortic valve implantation (TAVI). Initially this procedure was reserved for those patients deemed too high risk for surgical intervention. As technology progressed in this domain, the indication for TAVI expanded to a broader population of patient with severe aortic stenosis. To-date there are no long-term data for mortality and this is the central question this study will explore in correlation with haemodynamic parameters. Essentially, this study will explore the effect of TAVI in the long term. All patients that had a TAVI within the RBH&HH NHS Foundation Trust between January 2008 and December 2017 will be included in the study. This is a retrospective study.