View clinical trials related to Aortic Stenosis.
Filter by: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.
To evaluate the effect on cognitive function, recovery, cardioprotection and haemodynamics of standard Remifentanil anaesthesia to standard Sufentanil anaesthesia in patients undergoing coronary artery bypass with or without aortic valve replacement.
The objective is to observe trends in patient characteristics and outcomes after aortic or mitral transcatheter heart valve replacement over time.
To assess the ability of baseline clinical parameters and imaging modalities to predict short and long term left ventricular function and clinical outcome of subjects with low-gradient, severe aortic stenosis. To assess the impact of aortic valve replacement as compared to medical therapy on clinical outcome of patients with low-gradient, severe aortic stenosis. To assess possible impact of aortic annulus assessment using 3-dimensional imaging modalities on the assessment of AS severity and definition of low gradient severe aortic 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 is an international multi-center, prospective, observational registry with consecutive patient enrollment intended to determine outcome Parameters within 30 days after transaortic transcatheter aortic valve replacement.
Aim of the study is the definition of criteria for a standardized assessment of heart function by 3D echocardiographic procedures. Standardized criteria will be defined to assess aortic valve insufficiency after TAVI and success of mitral valve replacement respectively.
The investigators decided to make a study with a cohort of patients as homogenous as possible with a cross clamp time around 70 min. Adult patients with a severe aortic stenoses without any other significant heart disease was included in our prospective randomised study. This group of patients was chosen for two reasons. First, these patients have left ventricular hypertrophy making the myocardium vulnerable to ischemia, secondly the investigators wanted to avoid the possible confounding effect of ischemia found in patients with variable degrees of coronary artery disease. Therefore, patients with additional significant coronary artery disease (≥ 50% stenoses) were excluded from the study.
To assess the safety and clinical performance of the CoreValve™ Evolut R™ System.
Frailty is a state of decreased physiologic reserves and vulnerability to stressors. Several tools exist to measure frailty, some based on physical tests and others on questionnaires, yet there is no agreement on which tool to recommend. This multi-center prospective cohort study is aimed at comparing various frailty assessment tools to determine which best predicts death or major complications after cardiac surgery or transcatheter intervention. The population of interest is elderly patients with severe aortic stenosis undergoing surgical or transcatheter aortic valve replacement. The frailty assessment tools under investigation include composite frailty scales, physical performance tests, muscle mass, and biomarker expression. The overall objective is to improve our ability to predict risk by measuring frailty using the optimal tool in elderly cardiovascular patients.