View clinical trials related to Aortic Aneurysm.
Filter by:Cortisol deficiency is diagnosed by the adrenocorticotrophin (ACTH) stimulation test. This test measures cortisol levels in the blood before and after giving an injection of ACTH. Currently, the results of this test can only be reliably interpreted when it is carried out on people in non-stressful situations. Frequently the test is carried out in hospitalized patients in stressful situations, giving results that are hard to interpret. Our study is to first do this test in a non-stressful situation, followed by a repeat test in a stressful situation, to compare the results and create a set of guidelines for interpreting the test when it is carried out in stressful situations.
To collect and analyze clinical follow-up data which can be used to assess the safety, efficacy, and durability of endovascular AAA repair with Zenith and Chuter-Gianturco stent-grafts.
This is a study to assess the safety and effectiveness of endovascular treatment of aortic aneurysms involving the proximal aortic arch. The investigational operation involves placing a stent-graft over the aortic aneurysm.
To compare the aortic pulse profile before and after stent-graft implantation to prove that endovascular AAA repair using non-compliant stent-graft changes the aortic pulse profile.
After endovascular treatment of an abdominal aortic aneurysm, lifelong imaging follow-up is needed to monitor the effectiveness of the treatment. One parameter in this follow-up is endoleak, which is leakage of blood into the aneurysm sac. The aim of this study is to investigate the value of magnetic resonance imaging using Vasovist as a contrast agent for the detection of endoleaks.
This is a study to assess the safety and effectiveness of endovascular treatment of thoracoabdominal (TAAA) and paravisceral abdominal (PVAAA) aortic aneurysms. The investigational operation involves placing a stent-graft over the aortic aneurysm.
The primary objective of the CAVIAAR study is to prove that aortic valve sparing for patients with aortic root aneurysms and/or dystrophic aortic insufficiency is associated with a 45% increase of 3 years-survival rate without increased mortality or serious increased morbidity events when compared to mechanical valve replacement. The main hypothesis of this study is that a standardized procedure of valve sparing based on external aortic annuloplasty in patients with dystrophic aortic insufficiency and/or aortic root aneurysm increases survival rate without increased mortality or serious increased morbidity events when compared with patients undergoing mechanical aortic valve replacement.
The objective of this study will be to answer a clinical question that has not already been investigated; that is, what are the effects of aortic infra-renal clamping and unclamping on intraocular pressure during Abdominal Aortic Aneurysm (AAA) repair? Depending on the results, this study may raise or alleviate concern that vascular surgery for abdominal aortic aneurysm could contribute to early perioperative exacerbation of pre-existing eye disease and increase a patient's vulnerability to developing a type of blindness known as ischemic optic neuropathy. The purpose of this observational study is to evaluate whether intraocular pressure measurements with a handheld tonometer will detect changes in intraocular pressure related to intraoperative events during aortic cross clamping and unclamping that may provide information on causes of perioperative blindness.
Lipid-rich atherosclerotic plaques, or "vulnerable plaques" are prone to rupture, causing local intravascular thrombosis, with subsequent grave clinical consequences. Atherosclerotic plaques normally removed during surgery, and peripheral blood samples will be studied to achieve the following objectives: "1" Define histological features of the vulnerable plaque, analyze its physical characteristics, and investigate selected gene expression. "2" Study biomarkers of inflammation in conjunction with the presence of vulnerable plaques. "3" Explore the potential role of infection in atherogenesis.
The purpose of this study is to compare endovascular repair using any FDA approved Medtronic AAA Stent Graft System versus surveillance in subjects with smaller abdominal aortic aneurysms (AAA)(4-5CM), with respect to AAA rupture and AAA related deaths.