Active clinical trials for "Aneurysm"

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.

Patients undergoing intracranial procedures may experience severe hypertension and tachycardia due to intracranial hypertension and to increased release of adrenaline. Preventing perioperative sympathetic activity is of great importance. A common technique is using b-blockers like esmolol, which effectively block perioperative hemodynamic changes during intracranial surgery. A2 agonists, like Dexmedetomidine-Dex are now being used as a component of a balanced anesthesia during neurosurgical procedures. This study aimed to evaluate whether esmolol or dex attenuates perioperative changes in patients undergoing elective craniotomy with fast track neuroanesthesia.

Flow disruption is a new endovascular approach for treatment of both ruptured and unruptured intracranial aneurysms, which involves placement of an endosaccular device (WEB) which modifies the blood flow at the level of the neck and induces intraaneurysmal thrombosis. The WEB was designed to treat wide-neck bifurcation aneurysms. This observational study will collect data about the routine practice in one center of using the WEB in ruptured and unruptured intracranial aneurysms. The primary objective is to evaluate its efficacy by assessing the anatomic outcome during follow-up.

This trial is a prospective, multicenter, single-arm confirmatory clinical trial. The study is to confirm the safety and effectiveness of the WEB Aneurysm Embolization System demonstrated in the US WEB-IT Study for the treatment of intracranial wide-neck bifurcation aneurysms. The study's primary endpoints include a primary effectiveness endpoint and a primary safety endpoint. The study device must meet both endpoints. The primary effectiveness endpoint is adjudicated by an independent third party core lab.

The overall incidence of DWI positive for thromboembolic events following endovascular treatment of intracranial aneurysms is proximately 50%. Whether remote ischemic conditioning was safe and effective to reduce ischemic brain lesions on DWI after endovascular treatment of intracranial aneurysms is still unclear. The investigators' hypothesis is that remote ischemic conditioning is a safe and effective strategy to reduce new ischemic lesions in intracranial aneurysms patients undergoing endovascular treatment.

The purpose of this observational post-marketing registry will be to collect and analyze safety, effectiveness, and quality of life outcomes, during and after treatment with the Surpass Flow Diverter. Health Economics assessments (cost data) will also be collected and analyzed.

The purpose of this study is to investigate the effect of platelet infusion prior to transfer to a vascular surgical department in patients with a ruptured abdominal aortic aneurism.

Delayed vasospasm (DCVS) is the most serious complication of aneurysmal subarachnoid hemorrhage (aSAH) perioperative period ,the incidence rate up to 30% to 90%, and often can cause severe brain ischemia or brain damage of delayed ischemic and even lead to cerebral infarction, to be the main factor of deadly and severe disability . (aSAH) perioperative delayed vasospasm (CVS) is the bottleneck to restrict the long-term effect. Since there is no standard clinical treatment programs, limiting the advantages and characteristics of traditional Chinese medicine to play.Guangdong Provincial Hospital of TCM is the province's Medical Center encephalopathy, treated 100 brain aneurysm patients each year, more than 80 times craniotomies and surgical interventions , with a rich source of patiengs to carry out the study. In this study, on the basis studies on hemorrhagic stroke of a yin and yang syndrome and comprehensive treatment programe of the State 1995,the 15th research , in accordance with characteristics of the pathophysiology and understanding of cause and pathogenesis in aSAH perioperative period , through expert advice and review of the literature, under the guidance of Liu Maocai who isChinese medicine practitioners of Guangdong province , from diagnosis, diagnosis and treatment,prescription drugs, and other aspects of efficacy evaluation, developmenting a standardized treatment program of delayed CVS after aSAH . To evaluate the efficacy of the standardized program by prospective, randomized,controlled clinical trial,improving the postoperative results, reducting significantly the mortality and morbidity patients with cerebral aneurysms.

The aorta is a large vessel that carries blood away from the heart. Sometimes it becomes dilated (swells) and this is known as 'aneurysm'. It may cause either dissection (splitting of the wall) or rupture (bursting). Treatments could be through open surgery or by use of stents (tubular mesh) through the groin. There is a risk of causing paraplegia, which is the loss/weakness of leg function as well as incontinence (loss of bladder and/or bowel control). To try and prevent this, a number of techniques are used such as removing/draining of cerebrospinal fluid (CSF) (the clear fluid surrounding the brain and spinal cord). Sometimes however; CSF cannot be drained drain cannot be inserted draining is unlikely to improve the situation Paralysis/weakness of the leg is seen In these situations, the use of a drug called acetazolamide may be helpful. This reduces the production of CSF and therefore decreases the need for CSF draining. It may also have an effect in decreasing the risk of paraplegia. Patients will be randomly (by chance) placed into one of two groups. One will get the drug as tablets and injection and the other will not receive any acetazolamide at all. Blood tests will be done in both groups. We expect to have 100 patients in the study, with patient involvement for a total of 10 days (maximum).

The study is a prospective, multicenter single-arm cohort. Patients with wide neck bifurcation aneurysms (WNBAs) have few choices for safe and effective endovascular treatment. In this study, all patients with qualifying WNBAs will be treated with the WEB. The primary effectiveness outcome of the study is the likelihood of complete intracranial aneurysm occlusion on the 1 year angiogram as adjudicated by a core laboratory.