View clinical trials related to Aortic Valve Stenosis.
Filter by:Use of the closure device in patient with percutaneous transfemoral aortic valve replacement
The purpose of this study is to evaluate the efficacy, safety and tolerability of pelacarsen (TQJ230) administered subcutaneously once monthly compared to placebo in slowing the progression of calcific aortic valve stenosis.
In this study, the investigators aimed to determine whether the preoperative Monocyte/HDL ratio would be a predictor of postoperative mortality and morbidity in patients who underwent aortic valve replacement due to aortic stenosis.
Aim of this randomized prospective study is to investigate the immunomodulatory effects of dexmedetomidine on outcomes in patients with isolated aortic stenosis after surgical aortic valve replacement.
Patients with severe aortic stenosis accepted for transcatheter intervention or open surgery are included before the intervention, and then followed up with clinical visits during the first year after intervention. Imaging with echocardiography and computed tomography (CT) are performed together with additional imaging with magnetic resonance imaging (MRI) and Positron emissions tomography (PET)-CT in a subgroup of the study population. Blood samples, physical performance and questionnaires with focus on frailty and heart failure are also collected at each visit. A follow up with information of the outcomes after 2-5 years will be performed through national registries.
Aortic stenosis is a progressive disease that affects approximately 3% of adults aged 75 and over. If left untreated, the mortality rate of aortic stenosis, which becomes symptomatic in a short time, is 50% in the first year, while this rate rises to 90% within 5 years. Surgical treatment of aortic stenosis has been proven to reduce symptoms and increase survival. Although surgical treatment is considered the gold standard, 30% of elderly patients cannot undergo surgery due to left ventricular dysfunction and comorbidities. The search for new methods with a low-risk rate and a more comfortable post-procedure process has begun. For this purpose, Cribier et al. Transcatheter aortic valve implantation (TAVI) was developed in 2002 as an important alternative to surgical aortic valve placement. The TAVI method; is the procedure of inserting a bioprosthetic aortic valve into the heart using the catheter method without open heart surgery. Although transcatheter aortic valve implantation is more tolerable than surgery, it has certain complications. According to the Valve Academic Research Consortium (VARC-3), common post-procedural complications are; stroke, myocardial infarction, bleeding, major vascular complications, and acute kidney injury. Nursing-specific care problems are stated as bleeding, infection, pain, decrease in cardiac output, and sleep problems. Many factors, such as the high risk of patients undergoing TAVI, the complexity of the procedure, and the complications that may develop after the procedure, require that the nursing care to be applied be specific and individualized to the TAVI procedure. It is very important to understand the experiences of the patients to effectively carry out this special care to be applied before and after TAVI. It is known that being aware of the experiences and needs will contribute positively to the care and treatment of future patients. Instens et al. stated that experiences can be reached by examining perspectives in depth rather than clinical studies or records. In this regard, Baumbusch et al. in their qualitative design study; It has been revealed that TAVI patients cannot manage their care after the procedure because of their age and comorbidities, there is a difference between their expectations and reality, and they need support in terms of information. In another study, the post-TAVI process was defined as a balance between the struggle for life and hope, and the importance of the support of health professionals during the process was emphasized. For these reasons, TAVI patients need nursing care support and information in terms of post-procedure disease management. The most important component of successful disease management is to increase the participation of the individual in his health. In this direction, nurse-led training and counseling programs are the leading methods that will increase the participation of patients in their health management, and research on this subject has been increasing in recent years. Jiang et al. In their study on patients with myocardial infarction, it was found that a nurse-led training and counseling program increased the quality of life and risk factor control. Boyne et al. In their study of heart failure patients, it was revealed that the knowledge, self-care, and self-efficacy of the patients increased after the intervention. Despite growing evidence for the benefits of nurse-led education and counseling programs, no studies have been found with TAVI patients who might need this intervention the most. The aim of this study; is to examine the effect of education and follow-up program on quality of life, self-care, treatment compliance and hospital readmission in patients who underwent TAVI.
This trail is for patients with mild cognitive impairment (MCI) who are receiving a transcatheter aortic valve replacement (TAVR). We will assess changes in neurocognition following TAVR with the 5 minute Montreal Cognitive Assessment (mini MoCA) when comparing pre procedure with post procedure assessments.
The purpose of this clinical study is to evaluate the effectiveness and safety of the transcatheter aortic valve system in the treatment of patients with severe aortic stenosis disease who are at high or prohibitive surgical risk.
The aorta distributes cardiac stroke volume into the whole body through its finetuned conductance function, that is propagation and modulation of flow pattern. Physicomechanic properties of the aortic wall assure continuous and homogenous blood flow distribution to organs. The physicomechanic properties of the aortic wall are heterotopic: The collagen/elastin ratio doubles in the abdominal aorta as compared to the thoracic aorta. Malfunction of aortic conduction due to large artery stiffening (LAS) leads to premature wave reflection and excess pulsatility which translate into organ damage in low-resistance beds. The regional heterogeneity of aortic physicomechanic properties and their histomorphological substrate leading to altered regional hemodynamics are not well investigated. Within the PHaRAo population, there is a spectrum of higher and lower risk patients. The aim of this cohort study is to collect prospectively and systematically clinical research data from PHaRAo patients. This cohort study is an open-end observational study to identify master switches in aortic disease
Investigating the myocardial effects of cold blood cardioplegia and del nido cardioplegia solution, which are routinely used in clinical practice, will contribute to the studies in the literature on the safety and efficacy of these two methods. For this purpose, patients with coronary artery disease that going to be Coronary Artery Bypass Graft (CABG) surgery will be classified within the scope of the SYNTAX score, the level of exposure to cardioplegia change in proportion to their score will be examined. Also, left ventricular muscle mass will be calculated in patients who will undergo Aortic Valve replacement (AVR) due to Aortic Stenosis, and myocardial protection level proportional to muscle mass will be examined, and cardioplegia efficiency will be compared.