View clinical trials related to Aortic Stenosis.
Filter by:In this study it is aimed to determine the diagnostic value of physiological measurements in the presence of aortic stenosis, and whether these are more accurate than angiographic assessment. Post-TAVR FFR will be taken as the reference for predicting ischemic lesions, and angiography and physiology - FFR and diastolic pressure ratio (dPR) - will be performed immediately before and after TAVR, in an all-comer multicentric observational study.
The R-TAVI study is a randomized pilot study examining the use of the right radial artery versus the femoral artery for secondary vascular access during transcatheter aortic valve implantation (TAVI).
The purpose of this registry is to collect specific health and patient data to identify more precisely the patient population undergoing TA aortic valve replacement with the ACURATE neo™ Aortic biprosthesis and ACURATE neo™ TA Transapical Delivery System. Safety and efficacy data will be collected to support the commercial use of the ACURATE neo™ Aortic Bioprosthesis and ACURATE neo™ TA Transapical Delivery System in a specific TA population. As per IFU, the ACURATE neo™ and its ACURATE neo™ TA Delivery System are intended for use in minimally invasive, transcatheter aortic valve replacement using transapical access in patients presenting with severe aortic valve stenosis.
Coronary artery blockages can reduce blood flow to the heart muscle. Fractional flow reserve (iFR or FFR) assessment is an invasive tool used to determine how much blood flow is reduced. The investigators will perform iFR/FFR on all intermediate coronary stenoses using standard practice, immediately before (at the time of) transcatheter aortic valve replacement (TAVR) and after successful TAVR. The investigators will compare pre- and post-TAVR iFR/FFR values, and assess short-term outcomes. The investigators hypothesize that iFR/FFR values will be consistently and significantly higher pre-TAVR in comparison with post-TAVR for the same lesions.
Background: Transcatheter aortic valve replacement (TAVR) is a non-surgical alternative to standard surgical aortic valve replacement. Not all patients are eligible for TAVR using standard access through the artery in the groin, because the artery is too small or too diseased. In this study, TAVR is performed using a new technique called transcaval access. The catheter is placed in the artery deep in the body by crossing through the wall of a deep vein. The connection between that vein and the aorta is closed with a new metallic device they are testing. This is called a transcaval closure device (TCD). Objective: To test the safety and early feasibility of closure of transcaval aortic access sites using the TCD after TAVR. Eligibility: Adults ages 21 and older undergoing TAVR for whom the procedure cannot be performed safely by the standard artery approach Design: Participants will be assessed by heart experts including cardiologists and surgeons. Participants will have TAVR by the transcaval approach. A small catheter will be passed between the largest vein in the body and the nearby largest artery (aorta), inside the abdomen. Through this catheter, the TAVR will be implanted in the usual way. After, doctors will implant the TCD by catheter to close the hole made in the aorta. Participants will be X-rayed. A dye will be injected to view the TCD device. Participants will get standard TAVR care afterwards. They will have physical exams, blood tests, and scans. Participants will have a follow-up scan within 1 month and after 12 months. Participants will have follow-up visits and phone calls 6 and 12 months after the procedure.
Multi-center, International, Prospective, Non comparative, Non randomized, Open label. 5,000 patients to be enrolled approximately worldwide. The objective of this registry is to collect safety and clinical performance post market data related to the procedure and follow-up of the Sorin Group aortic valve devices in accordance with the Instructions for Use (IFU). This observational global registry is intended to collect data without requiring any deviation from the standard of care and IFU in each participating center. The participating centers shall include those patients that have provided their informed consent to participate in this registry in accordance with the local applicable regulations.
Prospective, randomized, stratified non blinded multi-center, international, post market trial assessed in a non-inferiority study. The trial has a flexible sample size that will be determined adaptively. The trial will enroll up to 1234 subjects, but accrual may stop earlier at approximately 900 or 1050 subjects These subjects will be enrolled at approximately 60 worldwide investigational sites where the device is commercially available The primary objective of this trial is to test the safety and efficacy of Perceval versus standard sutured stented bioprosthetic aortic valves among the intended trial population.
Prospective, non-randomized, multicenter post-approval study to collect long term clinical and echographic data on Mitroflow DL patients.
The objective of this study is to evaluate the safety and effectiveness of the Lotus™ Valve System and LOTUS Edge™ Valve System for transcatheter aortic valve replacement (TAVR) in symptomatic subjects with calcific, severe native aortic stenosis who are considered at extreme or high risk for surgical valve replacement.
The purpose of this study is to determine whether intra- and postoperative use of the cardioPAT® cell saver decreases the need for allogenic red blood cell transfusion in patients, who undergo open heart surgery (with cardiopulmonary bypass) and preoperatively have an increased risk for bleeding.