View clinical trials related to Aortic Valve 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 purpose of the study is to obtain safety and effectiveness data of the Medtronic Evolut™ PRO+ TAVR System for the treatment of severe, asymptomatic aortic stenosis.
Currently, warfarin is the only approved anticoagulation for patients with mechanical valves. The purpose of this study is to determine if participants with an On-X Prosthetic Heart Valve / On-X aortic valve can be maintained safely and effectively on apixaban. Both the On-X aortic valve and apixaban have been approved for use by the US Food and Drug Administration (FDA) but they have not been approved to be used together.
The purpose of the RESPOND EDGE post market study is to collect real world clinical and device performance outcomes data with the Lotus Edge™ Valve System used in routine clinical practice to demonstrate that the commercially available Lotus Edge Valve System is a safe and effective treatment for patients with severe calcific aortic stenosis.
Aortic stenosis (AS) is the most frequent valvulopathy in Western countries. The prevalence of AS is constantly increasing due to the aging of the population. Several studies have shown that pulmonary arterial hypertension (PAH) was common in AS patients referred for TAVI and that it was an independent predictor of mortality after TAVI. Currently, there is no data in the literature regarding the evolution and prognosis value of PAH measured using right heart catheterization (reference method). PAH could either regress after TAVI or continue to progress despite the treatment of valvulopathy, resulting in a refractory right heart failure that can lead to death. The hypothesis of this study is that patients with PAH before TAVI procedure and at the 3-month follow-up visit (PAH persistence) have an increased risk of cardiovascular mortality compared to patients with no PAH at 3 months or having a significant reduction of their PAH (PAH regression). The aim of the study is to evaluate the prognostic impact of the evolution of PAH after TAVI in 424 patients using right heart catheterization.
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).
To evaluate the safety and performance of the HLT System in patients with symptomatic heart disease due to severe aortic stenosis who are judged by the Heart Team to be at Intermediate or High Risk for aortic valve replacement surgery.
According to current European Recommendations on valvular heart disease (VHD), "classical" severe aortic stenosis (AS) is defined by an aortic valve area (AVA) ≤1 cm2 and indexed AVA ≤0.6 cm2/m2, a mean aortic pressure gradient (MAG) >40 mmHg, and a maximal aortic velocity >4 m/sec. Aortic valve replacement (AVR) is recommended (class I indication) in patients with "classical" severe AS who have any symptoms related to aortic valve disease. In 2007, Hachicha et al. described a particular pattern of severe AS, characterized by an AVA ≤0.6 cm2/m2, low mean pressure aortic gradient (MAG <40 mmHg), despite the presence of a preserved left ventricular ejection fraction (LVEF ≥50%). This pattern of AS is encountered in nearly 15-25 % of patients who have severe AS. Typically, these patients are elderly subjects, with several comorbidities, a small left ventricular (LV) cavity with pronounced LV concentric remodeling and a restrictive physiology, leading to a decrease in LV stroke volume despite a preserved LVEF. The diagnosis and management of patients with low gradient severe AS and preserved LVEF are often challenging because: 1. the presence of a "true" severe aortic stenosis should be carefully confirmed by a multi-modality imaging approach; 2. the best therapeutic management (AVR versus conservative strategy) of symptomatic patients with low gradient severe AS and preserved LVEF is not clearly established. In very recently updated European guidelines on the management of VHD, symptomatic patients with low gradient and low flow severe AS and preserved LVEF have only a class IIa-level C indication for AVR. No specific indications are given for the management of symptomatic patients with low gradient and normal flow severe AS. This lack of indications is clearly attributed to a gap in knowledge which requires further investigations to be filled up.
REPRISE IV: REpositionable Percutaneous Replacement of Stenotic Aortic Valve through Implantation of LOTUS Edge Valve System in IntermediatE Surgical Risk Subjects
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.