View clinical trials related to Aortic Aneurysm.
Filter by:X-ray computed tomography imaging (CT) is routinely used in follow-up after endovascular aneurysm repair (EVAR). Contrast-enhanced ultrasound (CEUS) has been shown to give accurate information about endoleak after EVAR. Benefits of CEUS over CT include less radiation exposure, avoidance of renal function deterioration due to repeated X-ray contrast agent application and decrease in the cost of EVAR follow-up. This study is designed to investigate if results from literature are reproducible in St Olavs Hospital in Trondheim (Norway), to gain experience with the technique and to introduce CEUS as an alternative for detection of endoleak in this hospital.
The study is aimed at investigating whether repair of endoleak type II can be improved by adding navigation technology. Can this technology increase precision by guiding the needle that punctures through the skin as used during the repair procedure? Can the procedure logistics be improved by using navigation technology instead of computed tomography (CT) guidance of the needle puncture? Parameters logged during the procedure: - was the needle placement successful? - number of needle punctures? - time used on guidance procedure - X-ray exposure dose
The Valiant Mona LSA thoracic stent graft system is for the endovascular repair of aneurysms of the descending thoracic aorta (DTA) in patients who require coverage of the left subclavian artery (LSA).The study is intended to assess safety and performance of the device acutely and at 30 days.
The investigators want to measure the degradation of the endothelial glycocalyx before and after clamping the aorta, in patients operated for a abdominal aortic aneurism.
This is a multicentre, prospective, observational post-market registry (follow-up 1 month, 1 year, 2 years, 3 years, 4 years and 5 years) to monitor the post-market clinical safety and effectiveness of the Vascutek AnacondaTM Custom Fenestrated Stent Graft in patients with a short infrarenal neck of <15mm or juxta-renal abdominal aortic aneurysms who, in the opinion of the treating physician, are anatomically suitable for the AnacondaTM Custom Fenestrated Stent Graft and for whom a customised medical device is required.
An increasing incidence of abdominal aortic aneurysms (AAA) is observed in our ageing population. Since it is less invasive, endovascular repair (EVAR) by stent-graft (SG) insertion is frequently indicated in patients with intermediate and high-operative risk. Patient selection and stent planning for EVAR is done on CT-scans based on specific anatomic criteria. SG are inserted in the catheterization laboratory under digital substraction angiography (DSA) and fluoroscopic guidance. With this technology, no soft-tissue differentiation is available during the intervention and important information are lacking such as thrombus and aneurysm extension close to proximal and distal landing zones. Our team has recently patented a software allowing the extraction of the AAA (lumen and thrombus) from pre-operative CT-scanner. In collaboration with Siemens medical, the investigators have integrated this technology to the Siemens workstation in the catheterization laboratory. The investigators can now import the aortic lumen and thrombus meshes segmented from pre-operative CT-scans and perform a rigid registration with fluoroscopy and DSA data to enhance visualization of soft tissue during EVAR. Our preliminary results are encouraging in terms of feasibility and visualization. However, the delivery device of the SG and the guidewire used during the intervention are stiff and induce a deformation of aortic lumen and thrombus. This deformation impairs the accuracy of rigid registration. The investigators propose to improve registration accuracy by implementing an elastic deformation of aortic lumen and wall based on the segmentation of endovascular devices (delivery device, guidewires and catheters) inserted during the procedure and by biomechanical modeling.
The Department of Vascular Surgery at Catharina Hospital Eindhoven, The Netherlands initiates the Endurant for Challenging Anatomy: Global Experience (EAGLE) Registry. The aim of this study is to collect clinical information on the performance of the Endurant Stent Graft System for endovascular repair in anatomically challenging aneurysms, and to critically assess whether the current guidelines for anatomic eligibility to endovascular treatment with this system are still applicable. This study aims at creating a database that can be pooled/ compared with the ENGAGE database. This study aims at answering two major questions: 1. Is the technical success rate of successful delivery and deployment of the Endurant (II) similar in anatomically challenging aneurysm? 2. Is the successful treatment rate comparable in anatomically challenging aneurysms, or does treatment of these aneurysms lead to more complications and reinterventions?
An abdominal aortic aneurysm (AAA) is an enlargement or ballooning of the main artery supplying high pressure blood from the heart to the body. AAAs may continue to stretch until they burst (rupture) causing 7000 deaths per year in the United Kingdom (UK); 2.1% of all deaths in men over 65. Planned repair before rupture is critical and the National AAA Screening Programme (NAAASP) is being introduced to identify AAAs in men before rupture. Screening will identify over 9000 men per year with a previously undiagnosed AAA. More than 90% of screen detected AAAs are small, do no require repair, enter ultrasound follow-up (surveillance) and may benefit from exercise to improve fitness before repair. Over 4000 elective AAA repairs per year are performed in the UK and it has been suggested that exercise training and weight loss may reduce mortality and complications of AAA repair. This pilot study will examine the feasibility of supervised exercise training for patients with AAAs and determine the optimal duration of training to achieve worthwhile improvements in fitness.
Cardiovascular disease (CVD) is an important public health problem that affects millions of people worldwide. Associations between risk factors, such as smoking, dyslipidaemia or hypertension, and prevalent CVD are well documented. However, few studies have investigated associations with onset of disease. The initial manifestation of CVD, for example an episode of unstable angina, is important because it influences the prognosis, the quality of life and the management of disease. Furthermore, the extent to which social deprivation, alcohol consumption or atrial fibrillation affects presentation of CVD is poorly understood and deserves further consideration. Most previous studies have considered CVD as a single entity. However, differences in aetiology between coronary phenotypes suggest that risk factors may not be shared across specific coronary phenotypes and their relative importance is likely to differ for each phenotype. Gaining knowledge of these differences could provide insights into the pathophysiology of specific forms of CVD and could eventually lead to modification of recommendations for patient management and disease prevention. We propose to use the linkage of the national registry of coronary events to general practice records in the Clinical Practice Research Database (CPRD), to investigate whether demographic, behavioral, and clinico-metabolic risk factors differentially influence the onset of specific types of CVD.
Authors hypothesize that aortic root reimplantation procedure is superior over standard aortic valve reimplantation procedure in the incidence of aortic valve replacement.