View clinical trials related to Aneurysm.
Filter by:To compare the safety and efficacy of treating small aneurysms with coils specially designed for small aneurysms to historically reported rates of safety and efficacy for the treatment of larger aneurysms.
The RIPAT study is a prospective, randomized, double-blind study organized by the neurovascular group of the Clinical Department of Neurosurgery of Innsbruck Medical University, Innsbruck, Austria. Patients aged 18+ in whom the treatment of an un-ruptured intracranial aneurysm is indicated are eligible for study participation. Prior to aneurysm treatment, with the patient already under general anesthesia, the blood supply to an arm will be restricted for 3x 5minutes by inflating a standard blood pressure cuff. The study hypothesis is that this "remote ischemic preconditioning" maneuver is able to prevent a stroke during the following treatment of the aneurysm.
An association between arterial aneurysms and matrix metalloproteinases (MMPs) has been described previously. MMPs regulate extracellular structural proteins and tissue remodeling. Neutrophil Gelatinase-associated Lipocalin (NGAL) is involved in the regulation of MMP activity. The aim of this work was to study the relationship between the levels of MMPs and NGAL and arterial aneurysms. In a multicenter, open label, parallel groups, prospective study, patients with aneurysmal disease were divided into two groups: Group I (with ruptured aneurysm) and Group II (with non-ruptured aneurysm). Healthy volunteer patients were also enrolled and represented the control group (Group III). The investigators enrolled 307 patients (Group I: 107, Group II: 200) with arterial aneurysm: 49 popliteal, 31 common femoral, 2 superficial femoral, 29 common iliac artery, 3 common carotid and 193 abdominal aorta. Finally, 11 healthy volunteer patients (9 males and 2 females, age range 40-70 year-old, median 56) were enrolled in Group III. Elisa test and Western blot analysis revealed greater levels of immunoreactive MMP-9 and NGAL in all patients with ruptured aneurysms, both central and peripheral aneurysms, and in the aneurismal vessels. These results provide important advances in the understanding of the natural history of arterial aneurysms. MMPs and NGAL play a role in development of arterial aneurysms and they may represent molecular markers for the prevention of aneurysmal rupture
An abdominal aortic aneurysm occurs when the part of the aorta travelling down into the abdomen balloons out more than 50%. If caught early, treatments can be used to prevent rupture of the aneurysm. However, many of these aneurysms are asymptomatic and go undetected until they rupture, causing large amounts of blood to spill into the abdominal cavity and typically leads to death, if left untreated. The current mortality rate is between 50 and 90%. The resources required to treat patients with ruptured aortic aneurysms is quite substantial given that they need blood transfusions and can have prolonged hospital stays. Patients either undergo a more invasive operative repair, associated with greater blood products transfusions and complications, or if relatively stable, undergo a less invasive repair with tubes called stents. There is less morbidity associated with the latter, endovascular repair. To prevent blood loss in elective surgeries, drugs that promote blood clotting are often used. One drug, tranexamic acid , has been shown to reduce blood loss, reduce the number of blood transfusions required and improve patient outcomes in elective cardiac and orthopaedic surgeries, and more recently, in patients with traumatic hemorrhage. However, this drug has not been tested in this particular population. The purpose of this pilot project is to evaluate the effectiveness of tranexamic acid in reducing clinically significant bleeding in patients with ruptured aortic aneurysms in hospital sites across Saskatchewan using a single-group intervention design. The investigators will compare the data from patients treated with tranexamic acid to retrospective data from a control group that is matched on key variables. The investigators predict that tranexamic acid will result in reduced bleeding, reduced need for blood transfusions, less patients that require open surgery and improved patient outcomes. The results of this study will help determine if this treatment is effective at preventing the death of many people with ruptured abdominal aortic aneurysms.
The purpose of this clinical investigation is to evaluate the safety and effectiveness of the Barrel™ VRD when used to facilitate endovascular coiling of wide-neck bifurcating or branch intracranial aneurysms with any approved embolic coils.
The primary objective of this study is to gather data on the radiation exposure in patients treated with the Penumbra Coil 400™ System (PC 400) or conventional coils per their respective indications for use.This is a multicenter case review study of patients presenting with intracranial aneurysms who are treated with coil embolization therapy using the PC 400 or conventional coils. Data for each patient are collected acutely.Up to 90 patients treated with the PC 400 or conventional coils (2:1) at up to 15 centers in the USA will be enrolled.
Evaluation of surgical outcome of vitrectomy with subretinal injection of recombinant tissue-plasminogen activator for submacular hemorrhage associated with retinal arterial macroanuerysms.
Background Kawasaki disease (KD) is characterized by fever, bilateral nonexudative conjunctivitis, erythema of the lips and oral mucosa, changes in the extremities, rash, and cervical lymphadenopathy. Incidence of late coronary artery aneurysms or ectasia, which may lead to myocardial infarction (MI), sudden death, or ischemic heart disease, decreased after the introduction of intravenous immunoglobulin therapy. However, significant persistent coronary arterial lesions or aneurysms may still occur in about 1-3 % of the patients. Atorvastatin (Lipitor®), a kind of statin, is a selective competitive inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase. This drug had been safely and widely used for treatment of adult hyperlipidemia, prevention of coronary heart disease and familial hypercholesterolemia in childhood. In addition to the cholesterol-lowering effects, statins exerts diverse cellular, cholesterol-independent effects, including improvement in endothelial function, inhibition of neurohormonal activation, and reduction in levels of proinflammatory cytokines. Based on the above concepts, some patients with infrarenal abdominal aortic aneurysms received statin therapies and then the growth rate of aneurysms slowed down. Therefore, the investigators may hypothesize that Atorvastatin is helpful in the regression of persistent coronary lesions in KD patients due to its effect of anti-inflammation. In NTUH, there are about 20 KD patients with coronary lesions persistent for many years. And the investigators plan to conduct the clinical trial with atorvastatin to evaluate the effects of Atorvastatin on the persistent coronary arterial lesions/aneurysms in children with Kawasaki disease including safety and efficacy. Methods There are around 20 KD patients eligible for this study. After they sign the IRB-approved ICF, they will be enrolled for this study. Briefly, this study is divided into three stages: screening & enrollment stage (I), treatment & follow-up stage (II) for 1 year and final data analysis stage (III). Measurements include basic vital sign, electrocardiography, liver function, muscle enzyme, inflammatory markers and echocardiography. Predicted results 1.Oral atorvastatin therapy can effectively prevent the progression of coronary lesions in KD patients.
The purpose of this study is to determine the safety and efficacy of a drug minocycline in improving outcomes at 3 months after rupture of an aneurysm in the head.
Aortic dilatation syndromes are comprised by a group of different syndromes, of which Marfan syndrome is the best described. Many of the aorta dilatation associated syndromes are heritable connective tissue disorders but some patients do not have any other phenotypical symptoms than aorta dilatation. The genetic variation in thoracic aorta dilatation is still unknown. This study aims on genetic evaluation of patients with thoracic aorta dilatation. Furthermore the study will focus on a registry angel trying to evaluate prevalence, mortality, morbidity and socioeconomically status of Marfan syndrome patients. This part will rely on registry data obtained from unique Danish registries.