Active clinical trials for "Aortic Aneurysm"

This study compares the accuracy of fusion imaging (Fusion Roadmap) versus real-time X-ray imaging (Roadmap) during catheterization of supra-aortic trunks of in patients with aneurysms or arteriovenous malformations.

To determine FDG uptake following uncomplicated EVAR using the Nellix endoprosthesis. Does uncomplicated EVAR using the nellix endoprosthesis result in increased FDG uptake and false positive PET imaging?

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.

The purpose of this registry is to obtain case reports of physician experience with the Spiral-Z® graft under routine clinical care.

Registry for Endovascular repair of abdominal aortic aneurysm performed primarily by Interventional Cardiologists

The primary objective of this study is to determine whether specific patterns of circulating micro-ribonucleic acids (miRNAs) are associated with aortic aneurysm and dissection in patients with hereditary aortopathy syndromes. The most common of these syndromes is Marfan Syndrome (MFS), but several other recognized aortopathy syndromes are well characterized. The investigators propose the use of a simple blood test, from which miRNA profiles can be measured in individuals with aortopathy syndromes to be compared with miRNAs observed in a control population that has no known predisposition for aortic disease. The investigators hypothesize that microRNA profiles in individuals with Marfan syndrome, and related disorders, will be distinct from those seen in a control group. The investigators predict that up- or down-regulation of certain miRNAs will correlate with the presence and severity of aortic aneurysm, responses to medical therapy, and ultimately could be used to determine when an individual may be at risk of dissection.

It has been estimated that 80% of deaths from abdominal aortic aneurysms results from rupture. Endovascular Aneurysm Repair (EVAR) has been applied to RAAA (Ruptured Abdominal Aortic Aneurysm) patients with reports of improvements. Despite the use of EVAR, patients have developed complications with lung and kidney function. This study will investigate certain biochemical processes that will potentially reduce these complications. Knowledge gained from this study may also be used to further research in this field through larger studies.

The Freestyle® prosthesis (Medtronic plc, Dublin, Ireland) is a biological, porcine aortic root implanted in various combinations and techniques since the 1990s. The main indication for the choice of this prosthesis is a combined pathology with degenerated aortic valve and additional dilatation of the root often involving the ascending aorta. The Freestyle® prosthesis is also used in cases of dissection of the ascending aorta with the involvement of the aortic valve, which opens the debate on how far the ascending aorta should be replaced for a sustainable solution with calculable low periprocedural risk. Considering a lower intraoperative risk in the life-threatening situation, an extended resection of the aorta can be avoided and only the aortic root replaced with a piece of ascending aorta. On the contrary, focusing on improved long-term outcome, the technique of total arch replacement in aortic dissection was developed in emergency situations with acceptable results, which, however, were often reproducible only in large, experienced centers. Apart from the abovementioned options, the technique of proximal arch replacement can provide a tension-free anastomosis. The intention of hemiarch replacement is the attachment of the prosthesis to an aneurysm-free portion of the aortic arch helping to protect against further anastomotic aneurysms and spare the patient complex reoperation or interventional procedures in the future. As a possible drawback of the technique, especially in emergency situations, the potentially prolonged duration of surgery and the need of selective brain perfusion via axillary or carotid artery are discussed increasing the risk of stroke and further major events, which could not be reflected in current literature. However, there is still no convincing evidence of a long-term benefit in terms of re-operation and survival after hemiarch replacement. The aim of this retrospective analysis was to assess the mid-term outcome of the biological Freestyle® prosthesis in combination with operations on the ascending aorta and the aortic arch with regard to prosthetic performance, reoperations, stroke and death.

The vascular surgery is a highest risk procedure when considering postoperative complications associated with the cardiovascular system. The leading clinical presentation is acute hemodynamic decompensation. However, one of the possible pathomechanisms might be repolarization disturbances. Many of perioperative risk factors of cardiac complications are modifiable. The identification may help in the global perioperative risk reduction. Aim: The aim of the study was an identification of the factors which may release clinically overt repolarization disturbances. Methods: The study group consisted of 100 patients, diagnosed with abdominal subrenal aortic aneurysms or peripheral arterial disease scheduled for an elective "open" vascular surgery procedure. The authors investigated whether age, gender, comorbidities or some perioperative factors (including hemodynamic, metabolic or genetic) were related to the occurrence of clinically concealed repolarization disturbances or clinically disclosed cardiac complications in postoperative time up to 30 day and one year after vascular surgery procedure.

The study aims to investigate the applicability of intravascular ultrasound (IVUS) in the endovascular therapy of juxta-, supra- and thoracoabdominal aortic aneurysms. The focus of the study is on the intraoperative and postoperative evaluation of the geometric data of bridging stentgrafts in terms of patency, occurrence of stenosis and/or kinking.