View clinical trials related to Vascular Diseases.
Filter by:The purpose of this study has evolved and expanded since its inception. Originally the intent was to establish the functional, molecular and genetic profile of fibroblasts from Fibromuscular Dysplasia (FMD) patients as compared to carefully matched control subjects. While this remains among the objectives, the study has been expanded to undertake a fully powered cross-tissue systems genetics analysis of FMD, and now also the related arteriopathies spontaneous coronary artery dissection (SCAD) and cervical artery dissection (CvAD). The overall objective is to disclose the core biologic mechanisms of these disorders.
Identify factors that contribute to perioperative morbidity and mortality in patients undergoing cardiac surgery that involves cardiopulmonary bypass. Identify factors that affect perioperative morbidity and mortality in patients undergoing cardiac surgery.
Cardiac allograft vasculopathy (CAV) is a process of both immune and non-immune mediated thickening of the heart arteries of transplanted hearts. CAV limits the long term survival of heart transplant patients and is one of the common causes of death in the late post transplant period. Current methods of detecting CAV rest with invasive cardiac catheterization which carry repeated risks, as this test needs to be performed periodically through the life of a heart transplant patient. Traditional methods of coronary angiography identify CAV late in its course and is a crude method of evaluating coronary anatomy in heart transplant patients. Intravascular ultrasound is an additive tool that is able to detect early CAV before it becomes angiographically apparent, but still requires invasive cardiac catheterization to perform. However, it also limits assessment to the major epicardial arteries and does not give any information regarding the smaller branch vessels and cardiac microvasculature. Advances in cardiac CT and cardiac MRI hold potential to evaluate for CAV non-invasively. In addition, perfusion techniques may provide additional functional information regarding the status of the microvascular. In this pilot study, we aim to demonstrate the feasibility of cardiac CT and cardiac MRI with and without perfusion protocols, in patients post-heart transplant and to describe and compare CT and MRI findings in patients with established CAV versus those with no CAV, as diagnosed by standard invasive methods.
The registry aims to evaluate the safety, performance and efficacy of the Everolimus-eluting bioresorbable vascular scaffold (BVS) system following rotational atherectomy in patients with complex de novo native coronary artery lesions in all-day clinical practice.
Clopidogrel is crucial as antiplatelet treatment in patients undergoing percutaneous coronary intervention (PCI) with stent implantation and during one year after PCI, to prevent atherothrombotic complications. However, clopidogrel is ineffective in certain patients due to genetic mutation in CYP2C19 gene a specific enzyme in the liver required for metabolism of clopidogrel. Therefore, the purpose of this study is to test these patients genetically at bedside and prescribe an alternative drug such as Ticagrelor (90 mg twice daily) or prasugrel ( 10mg once daily or 5mg once daily if the patient older than 75 years or a body weight < 60kg) if they are carriers of the allele 2 or 3 of the mutated gene.
The purpose of this study is to determine whether the combination with ramipril and clopidogrel leads to further improvement of endothelial function, reduction of oxidative stress and reduction of vascular inflammation, compared with ramipril monotherapy, in patients with Diabetes Mellitus type 2 and diabetic nephropathy.
The medical device "Vascular Join" represents a new anastomotic technology that should reduce the inter-surgeons variability in anastomosis construction and increase the performances in terms of results. It allows a perfect mechanical anastomosis without suture, avoiding the disadvantages of operation length and difficulty of the act, thrombosis, clamping and embolism. The "Vascular Join" creates automatically the connection between the vein or prosthesis at both ends and bridging the artery while preventing the passage of the needle and suture through the vessel wall and clamping pressure. This makes it very easy to construct a vascular anastomosis using the endoscopic technique less traumatic for the patient, lessen the pain of the patient, thereby reducing health care costs by reducing the length of hospital stay. No part of the device is in contact with the patient's blood because the whole system remains in the thickness of the arterial wall and outside the vessel. Thus, the formation of intimal hyperplasia is greatly diminished and the risk of occlusion of the anastomosis is less than the currently available risk when a suture is used. This risk is shown by studies on animals in labs, with a mean follow up of 12 months. The Vascular Join creates a perfect congruence of anastomosed vessels because it allows a perfect match between each vascular tunic. The medical device Vascular Join has been designed in order to: - Reduce the suture time; - Reduce the risk of occlusion of vein after the surgical process; - Avoid the contact risk between the external material steel (surgical needle) and blood; - Standardize the quality of anastomoses independently of the skill of the surgeon.
The primary goal of this project is to describe the clinical and physiologic characteristics of Spontaneous Coronary Artery Dissections (SCAD) in order to increase awareness, understanding, treatment and prevention of a potentially fatal cardiovascular event. This study will be a retrospective and prospective review of medical course and current health of men and women with SCAD.
This is a prospective, comparative control analysis. The investigators want to evaluate the aqueous humor levels of vascular endothelial growth factor in polypoidal choroidal vasculopathy and the effect of photodynamic therapy and combination treatment of photodynamic therapy and Lucentis (Ranibizumab)on the level of vascular endothelial growth factor.
The purpose of this study is to analyze genetic polymorphisms in genes encoding pro-inflammatory cytokines, and study the genetic predisposition to chronic periodontitis (CP) in combination with atherosclerotic cardiovascular (ACD) and aneurysmal diseases. The investigators will also try to identify oral bacteria in atherosclerotic plaques and aneurysmal walls and thrombus. Histological analyses of atherosclerotic plaques and aneurysmal wall will be performed.