Active clinical trials for "Aneurysm"

Various medical therapies have been proposed to prevent abdominal aortic aneurysm expansion. However, there have been very few randomized clinical trials to support use of any of these treatments. Several animal studies and observational reports suggest that ARBs can be useful in reducing abdominal aortic aneurysm (AAA) growth. However, so far, ARBs have not been evaluated in a randomized clinical trial. Therefore, the purpose of the study is to evaluate the effect of valsartan, an ARB, on annual growth rate in comparison with atenolol, a beta-blocker. Our hypothesis is that valsartan is superior to atenolol in the suppression of the aneurysm growth at 12 months. The BASE trial is designed as a investigator-initiated, multi-center, randomized controlled open-label trial. Patients with small AAA (aorta diameter <5cm) will be randomized 1:1 either to valsartan or to atenolol group. Randomization will be stratified by the AAA size (max. diameter >4 cm or ≤4 cm). Patients will receive either valsartan (daily dose 80 mg or more) or atenolol (daily dose 50 mg or more) for 12 months. A CT scan will measure the maximal diameter of AAA at baseline and 12 months. The annual growth of AAA will be compared between the valsartan and the atenolol group.

This is a prospective, single-arm, multi-center post-marketing Study. The Study will commence as a single phase, with an optional second phase to follow at the discretion of the sponsor. Up to 300 eligible Subjects with small (< 4.9 mm) intracranial aneurysms, who consent to Study participation, will be treated in Phase 1 with MicroVention HyperSoft® 3D and HyperSoft® Helical coils with or without balloon remodeling or stent assistance at the discretion of the treating physician. The operator, at his/her discretion, may choose to frame the aneurysm with HyperSoft® 3D or any other bare metal coil but must finish the remainder of the aneurysm with HyperSoft® 3D and/or HyperSoft® Helical coils. At the discretion of the sponsor, additional patients, up to 300 patients total for the overall Study, with eligible aneurysms will be enrolled into Phase 2. In Phase 2, the aneurysm must be framed with a HydroFrame® or HydroSoft® 3D coil and filled/finished primarily with hydrogel coils. The intent to treat is to frame, fill and finish with all hydrogel coils. However, at the discretion of the treating physician, a bare platinum coil may be used to fill or finish, as long as a minimum of 50% (in total coil length) of hydrogel coils are used. Data will be collected on immediate and post-treatment angiographic occlusion rates (RRGS), new peri-procedural imaging-confirmed hemorrhage or ischemic stroke, neurological morbidity and mortality rates, recurrence rates, bleeding rates, retreatment rates, serious adverse events, >150 day angiographic occlusion rates (RRGS) and occlusion status. This will serve to establish the acute and sustained efficacy of EVT of small intracranial aneurysms with the specified microcoils, aided by balloon and/or stent remodeling where appropriate.

The aim of this study is to investigate the effect of the implantation of an Ultrapro® Mesh as prevention of incisional hernia after elective open abdominal aortic aneurysm repair. According to the literature these patients have an increased risk for an incisional hernia. By the implantation of an artificial mesh into the abdominal wall during the first abdominal aortic aneurysm repair, the risk can be reduced dramatically. In small feasibility studies incisional hernia rates as low as 0% have been achieved. Patients scheduled for elective open abdominal aortic aneurysm repair will be randomized into two groups, one receiving an onlay mesh, the other conventional wound closure with sutures.

Best treatment option of retinal arterial macroaneurysm is still controversial. A recent publication has shown that subthreshold laser treatment can be beneficial in improving visual acuity in eyes with symptomatic retinal arterial macroaneurysm. Aim of the study is to compare the effects of subthreshold laser treatment and threshold laser treatment in patients affected by symptomatic retinal arterial macroaneurysm.

A prospective, non-randomized multi-center clinical evaluation of the performance of the TriVascular Thoracic Stent Graft System when used in the treatment of subjects with thoracic aortic aneurysms (TAA).

Abdominal aortic aneurysms (AAA) are balloon-like swellings of the body's main blood vessel (aorta) as it courses through the abdomen. As a result of the National Aneurysm Screening programme many more of these will be detected. Small AAAs grow slowly and remain a benign condition until the diameter exceeds 2-3 times the diameter of the normal aorta (about 5.5cm in size), when operative repair of the aneurysm is recommended avoiding the potentially fatal event of bursting and bleeding (aneurysm rupture). It is therefore important to identify a strategy to prevent aneurysm growth. There is a suggestion that the use of a specific drug class, angiotensin converting enzyme (ACE) inhibitors, may reduce the risk of rupture of the larger aneurysms. This trial will assess whether an ACE inhibitor (perindopril) has aneurysm-related benefits, in patients with small AAAs at screening centres in the London area. The effects of perindopril versus a placebo(dummy) on AAA growth rates will be compared. In addition by comparing the effects of perindopril with the effects of equivalent blood pressure lowering with another non-ACE inhibitor class of drug (amlodipine) on aneurysm growth rate, we can see whether any benefits of perindopril are simply the result of lowering blood pressure. 225 Patients will be assigned to one of these 3 treatments by chance (randomisation).In addition to analysis of the effect of perindopril and blood pressure lowering,the effect of the treatments on quality of life will be assessed. Patients will return at 3-monthly intervals for an ultrasound scan and blood pressure measurements, with questionnaires regarding quality of life at the start and end of the 2-year research period. An ultrasound scan is a painless test that uses sound waves to create images of organs and structures inside your body.

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 aim of this multicenter randomized trial is to compare the endovascular repair versus conventional repair for ruptured aorta-iliac aneurysms observed on CT scan in stable patients with suitable anatomy. The main awaited result is the significant reduction of the mortality of the conventional repair.

The primary objective of this trial is to determine whether the Talent Thoracic Stent Graft, an investigational device, is a safe and effective method of treating thoracic aortic aneurysms (abnormal ballooning of the vessel wall) and other thoracic lesions (dissections, transections, pseudoaneurysms, penetrating ulcers, etc.). The endovascular method is a substitute for the major operation that is performed to treat the lesions.

To assess the safety and efficacy of the GORE Conformable TAG® Thoracic Endoprosthesis in the primary treatment of aneurysm of the descending thoracic aorta (DTA) > Primary Hypothesis: The proportion of subjects free from a major device event through 1 month post-treatment will not be significantly less than 0.95, which represents the proportion observed in previous clinical studies with the GORE TAG® Thoracic Endoprosthesis