View clinical trials related to Aneurysm.
Filter by:The purpose of this study is to evaluate the safety and effectiveness of the Talent Endoluminal Spring Graft System, an investigational device, to treat abdominal aortic aneurysms (AAA). The treatment population will include patients with an abdominal aortic aneurysm who meet the inclusion/exclusion criteria. All patients in the treatment population will undergo post-procedure follow-up evaluations at one (1), six (6), and 12 months and annually thereafter up to five (5) years post-procedure.
The purpose of this randomized trial was to determine whether renal perfusion with cold blood provides better protection against renal ischemia than perfusion with cold crystalloid in patients undergoing TAAA repair with left heart bypass.
Patients undergoing surgery on their Aorta can get ischemia, a lack of blood flow, to their intestines and colon. This is very serious, as 2 out of 3 patients who have this problem die before leaving the hospital. A device developed by Spectros, called T-Stat, is approved by the US FDA to detect ischemia, and has been reported to detect ischemia in AAA aneurysm surgery and stenting, allowing the surgeon or interventional radiologist to take action quickly, while the colon ischemia is still treatable. This purpose of this study is to establish how T-Stat can best be used to prevent deaths.
Rationale: Aneurysm development, progression and rupture are characterised by extensive inflammation, dominated by the infiltration of T-cells, B-cells and macrophages. Recent studies into the pathophysiology of aneurysm wall degradation suggest a close relation between increased mechanical stress and the local activation of infiltrated lymphocytes and macrophages. The non-invasive detection of aneurysm wall inflammation, using 18-fluorodeoxyglucose positron emission tomography (FDG-PET) might therefore provide valuable information on the extend of the disease and could clarify the role of mechanical stress on the propagation of aneurysm wall inflammation. Objective: Correlation of FDG uptake and in vitro aneurysm wall tensile strength. (primary objective). The effect of aneurysm sac depressurisation, after endovascular aneurysm repair, on aneurysm wall inflammation (secondary objective). Study design: Observational case series (pilot). Study population: Patients scheduled for conventional (open) and endovascular aneurysm repair. Main study parameters: Standard uptake value (SUV) measurements to asses FDG uptake in the aneurysm wall and in vitro aneurysm wall strength (N/mm). Nature and extent of the burden and risks associated with participation, benefit and group relatedness: Patients scheduled for conventional (open) or endovascular aneurysm repair are admitted to the hospital the day before surgery. At that point all patients will be evaluated using FDG-PET. Although intake of sugar-free liquids is permitted, glucose intake is restricted 6 hours prior to FDG-PET imaging. One hour after intravenous injection of 200-220 MBq FDG, whole body emission and transmission images will be acquired. To determine inflammation markers ( e.g. CRP), blood and urine samples will be collected prior to the operation and again 6 weeks after surgery. For in vitro aneurysm wall tensile strength testing wall specimens will be harvested during conventional aneurysm repair.
This study was a prospective observational study examined the safety of the TriVascular AAA Stent-Graft System in the elective treatment of patients with abdominal aortic aneurysms. Specifically, the study will evaluate the safety of the TriVascualr AAA Stent-Graft System, evaluate the ability to deliver the Tri-Vascular AAA Stent-Graft System to the desired location within the aorta, and evaluate the ability of the TriVascular AAA Stent-Graft to exclude the abdominal aortic aneurysm.
The PRET study aims at comparing two types of coils used in the endovascular treatment of intracranial aneurysms. The first type made of platinum has been used for more than 15 years. The other, referred to as hydrocoil, containing in addition to platinum a polymer layer that expands when in contact with blood, has been in use since 2002. The hypothesis of the PRET study is that the newer hydrocoil will be more effective and yet as safe as the older platinum coil.
Fast track programs have been introduced in many surgical fields to minimize postoperative morbidity and mortality. Morbidity after elective open infrarenal aneurysm repair is as high as 30%, mortality ranges up to 10%. In terms of open infrarenal aneurysm repair no randomized controlled trials exist to introduce and evaluate such patient care programs.
We hypothesize that in patients undergoing surgical treatment of unruptured intracranial aneurysms, the increase in blood sugar as a result of surgical stress is detrimental to outcome, as measured by blood levels of proteins associated with systemic inflammation and 7 day, 90 day, and 1 year postoperative neurologic and neuropsychiatric outcomes. Because insulin itself is an anti-inflammatory agent, we anticipate that normalizing blood sugar levels with insulin doses higher than normally produced by the body (i.e., "supraphysiologic" insulin doses) will have a greater benefit on these outcomes than equally normalizing blood sugar levels using normal insulin doses. Based on the results of this study, we will be able to determine if a more laborious strategy to normalize blood sugar levels (i.e., "supraphysiologic" insulin therapy) offers any additional benefits to normal insulin dosing strategies. In addition, we will obtain a robust assessment of postoperative neuropsychiatric and neurologic outcomes of surgically repaired unruptured intracranial aneurysms that will serve as the basis for future studies to decrease morbidity of these patients
The purpose of this study is to assess the safety and efficacy of the 31 mm GORE EXCLUDER® AAA Endoprosthesis in the treatment of infrarenal abdominal aortic aneurysms
Subarachnoid haemorrhage (SAH) may cause damage to the hypotalamo-pituitary-adrenal axis (HPA) thus disturbing the hormonal response of these structures. The aim of our study is to characterize the function of HPA-axis acutely and over time up to three months in patients with SAH.