View clinical trials related to Aneurysm.
Filter by:This is a Prospective Registry study to collect imaging and clinical data both on patients with aortic aneurysm disease undergoing serial monitoring and on patients pre and post-endovascular repair, using ViTAA (The Sponsor) aortic mapping technology.
The present study is designed to evaluate the modulatory effect of IP on the vascular endothelial function. To assess its vasodilatation potential, change in flow mediated dilation (FMD) and blood flow velocity (BFV) will be assessed in healthy adult male population.
This international multi-center registry is used to collect existing information and outcomes for patients undergoing an operation for treatment of injuries to the brain including the blockage of blood flow to an area of the brain, an abnormal ballooning of an artery, abnormal tangling of blood vessels, abnormal formation of blood vessels, tearing of vein, and bleeding in the brain. This information is used to help predict outcomes that undergo an operation for treatment of the above-listed brain injuries. Additionally, the information is used to compare techniques and devices' effects on technical and clinical outcomes.
Aneurysm of the abdominal aorta is defined by a loss of parallelism of the arterial wall. The main risk of this pathology is the rupture of the aneurysm which is life threatening and this risk increases with the size of the aneurysm. Connected stents allow the management of complex thoracoabdominal aneurysms in patients at high surgical risk and/or contraindicated for open surgery. These endovascular techniques have demonstrated their safety and efficacy, however, long-term CT follow-up remains essential to detect complications such as endo-leaks and restenosis/thrombosis of visceral and renal stents. The prognostic factors of these complications remain poorly elucidated. The type of stent to be used could be an explanation, however, no stent has been proven to be superior in this application to date. Data from the literature suggest an influence of stents on the aortic geometry and the arterial axes of the digestive tract during respiratory movements. The work of the Stanford vascular surgery team shows that the deformations and modifications of the geometry of these stents induced by the respiratory cycle could have a negative impact by migration, stenosis and thrombosis.
Comparison of clinical and radiological outcomes between bare platinum coil group and second-generation hydrogel coils for treatment of ruptured intracranial aneurysms.
Aortic arch repair surgery is a technically complex and challenging procedure to treat aortic pathologies. Despite advancements in perioperative care, detrimental neurological complications occur during or after surgery. The neurological complications increase the economic burden of healthcare, morbidity and quality of life for the patients, even if they survive. Stroke, for example, leads to an increase in healthcare and social care costs, requiring a subsequent lengthy rehabilitation. Milder neurological impairments include transient ischaemic attacks, confusion and delirium, necessitating longer intensive care and hospital stay. Currently applied cerebral monitoring modalities are electroencephalogram and cerebral oximetry. However, they are not specific enough to timely detect early cerebral ischaemia to prevent neurological complications. S100B protein and neuron-specific enolase are serum markers that reflect cerebral damage, however, their applicability in the hyperacute setting is limited. However, rapid measurements of glial fibrillary protein have paved new pathways to detect cerebral injury. Recent studies reveal more sensitive biomarkers of glucose, lactate, pyruvate, glutamate and glycerol. These biomarkers could potentially detect cerebral ischaemia on a near real-time basis using the microdialysis method. The aim of the project is to develop a bedside system for early detection of cerebral ischaemia on a near real-time basis during aortic arch surgery. Early detection of cerebral ischaemia could mandate more aggressive cerebral protection strategies by further optimisation of hypothermia and antegrade selective cerebral perfusion during surgery, and optimisation of blood pressure and oxygenation in the intensive care unit. Ultimately, early detection of cerebral ischemia during surgery will prevent disabling and costly neurological complications following surgery.
This study was designed to whether there is a measurable reduction in inflammation in walls of unruptured vertebrobasilar dissecting aneurysms with atorvastatin.
Intracranial aneurysm is one of the most common cerebrovascular diseases, with a prevalence of about 3.2%. With the aging of the population and the further popularization of MRA and other examination methods, the prevalence of intracranial aneurysm will further increase. Rupture of intracranial aneurysm is an important cause of death and severe disability in patients. The annual rate of rupture of intracranial aneurysm is about 1%, and the size of aneurysm, the location of aneurysm in the posterior circulation, and the history of subarachnoid hemorrhage on the aneurysm wall are the risk factors for aneurysm rupture. Phases are currently recognized tools for assessing the risk of aneurysm rupture, which can provide important guidance for neurosurgeons and patients to decide whether to actively intervene. In the last century, for patients with intracranial aneurysm with high risk of rupture, craniotomy and clipping for intracranial aneurysm was the gold standard for treatment. However, with the rapid development of embolization technology and materials in the past 20 years, the application of endovascular embolization for intracranial aneurysms has been more and more widely, especially after several large prospective studies such as ISAT and ISUIA, endovascular embolization has more advantages over craniotomy clipping.Whereas, it is still very popular to adopt craniotomy clipping for middle cerebral artery aneurysms, the main reasons for which are relative superficial location, wider aneurysm neck, smaller parent artery and more branching vessels, etc., which make early endovascular embolization treatment not advantageous. With the maturity of stent-assisted embolization technology in recent years, the use of a new generation of stents, and the improvement of perioperative anti-platelet strategies, endovascular embolization has achieved good results in the treatment of middle artery aneurysms. However, these studies were retrospective, single-center studies, subject to a variety of confounding factors, and the reliability of the results is limited. Therefore, it will be of great clinical significance to carry out a prospective, multi-center clinical study on the treatment strategy of middle cerebral artery aneurysms. Patients with unruptured middle cerebral artery aneurysms who had been diagnosed with at least one imaging （CTA/MRA/DSA）were enrolled. The treatment including endovascular embolization and craniotomy clipping was determined according to routine management in the center. After receiving informed consent from the patients, the safety and effectiveness data were obtained to verify whether endovascular embolization was safe and effective. Through further follow-up and data analysis, protective factors and risk factors for the treatment of middle cerebral artery aneurysms were investigated. Through well-designed clinical studies, safer and more effective treatment methods can be found, and potential factors leading to perioperative complications can be found, ultimately improving the prognosis of patients with middle cerebral artery aneurysms.
The purpose of this study is to assess the effectiveness and safety of the Flow Diverter (Tonbridge) by collecting data from subjects who receive endovascular treatment of intracranial aneurysms.
Collect real-world post-market clinical follow-up data on patients treated with the GORE® VIABAHN® Endoprosthesis with PROPATEN Bioactive Surface (VSX)