Active clinical trials for "Aneurysm"

The Wovex bifurcated dacron vascular prostheses have been available on the French market since 2008. They are mainly used to treat aneurysmal or occlusive aortic diseases. To date, they have not been the subject of a specific clinical efficacy/safety study, unlike other Dacron prostheses used in the same field. We purpose a monocentric, retrospective, consecutive study based on medical data, including all the patients operated for aneurysms or occlusive disease of the abdominal aorta at Dijon Bourgogne University Hospital between 2013 and 2017 and who received a WOVEX bifurcated prosthesis (Wovex® Polyester Vascular Protheses). The objective is to explore the safety (short-term postoperative morbidity and mortality at 5 years) and efficacy (primary permeability, secondary permeability and dilatation of the prosthesis at 5 years) of the WOVEX prosthesis.

Biomarkers can play a vital role in prognosing the perioperative complications in thoracic aorta surgery. The goal of a study is to determine the correlation between intraoperative level of certain biomarkers and total amount of peroperative complications.

The 8-12 fold higher risk for sisters and brothers of patients with Abdominal Aortic Aneurysms (AAA) to develop AAA compared to persons in the population is well known in the scientific community. Recently the value of the screening program for siblings has been analyzed and is shown to be highly cost-efficient, similar to the population based screening of 65-year old men for AAA. Most importantly detection of siblings also adresses and includes women at risk. The adult offsprings to AAA patient would hypothetically bear the same risk of AAA as siblings. This has never been evaluated scientifically due to the practical difficulties in tracking the offspring and inviting them to screening at an age when they are at risk of AAA-disease. In Sweden, the unique multigeneration registry exists which could support such detection, with the possibility to track adult offspring to patients, and investigate the true contemporary prevalence in them. The DAAAD project aims at investigating the prevalence in adult offspring parallel to developing a model for such a selective screening program

Spleen artery aneurysm represents the most common visceral aneurysm and the third most common splanchnic aneurysm. Most patients have no symptoms and are diagnosed as a part of other diagnostic focuses and examinations. The investigators present two patients with splenic artery aneurysms localized in the splenic hilum, who auspiciously undergo laparoscopic splenectomies with hem-o-lock clips in the vascular hilum without complications. These two cases showed that in addition to the numerous advantages of minimally invasive approaches, there is the possibility to improve laparoscopic technique in terms of safety and economic reasons by using hem - o - lock clips as a hemostatic technique securing the vascular elements of the splenic hilum.

This clinical study will capture clinical data specific to the performance and safety of the LeMaitre® CARDIAL Dialine II. It is a retrospective, monocenter, post-market safety and performance study. Following the new MDR regulation, this study will allow the clinical data of the prosthesis to be completed in order to renew its CE marking.

We will demonstrate the validity of measurements with a low-dose, EKG-gated CT without contrast in the ascending aorta evaluation, compared with the current Angio-CT measurements.

The purpose of the study is to determine if the dose of contrast (Omnipaque) administered for Computed Tomography Arteriograms (CTA) can be reduced without degradation of image quality. The hypothesis is that there is no difference in image quality using ultra-low dose contrast in CTA exams compared to routine, standard of care dose exams.

Major vascular surgery involves operations to repair swollen blood vessels, clear debris from blocked arteries or bypass blocked blood vessels. Patients with these problems are a high-risk surgical group as they have generalized blood vessel disease. These puts them at risk of major complications around the time of surgery such as heart attacks , strokes and death. The mortality following repair of a swollen main artery in the abdomen is about 1 in 20. This contrasts poorly with the 1 per 100 risk of death following a heart bypass. Simple and cost-effective methods are needed to reduce the risks of major vascular surgery. Remote ischaemic preconditioning (RIPC) may be such a technique. To induce RIPC, the blood supply to muscle in the patient's arm is interrupted for about 5 minutes. It is then restored for a further five minutes. This cycle is repeated three more times. The blood supply is interrupted simply by inflating a blood pressure cuff to maximum pressure. This repeated brief interruption of the muscular blood supply sends signals to critical organs such as the brain and heart, which are rendered temporarily resistant to damage from reduced blood supply. Several small randomized clinical trials in patients undergoing different types of major vascular surgery have demonstrated a potential benefit. This large, multi-centre trial aims to determine whether RIPC can reduce complications in routine practice.

An increasing incidence of abdominal aortic aneurysms (AAA) is observed in our ageing population. Since it is less invasive, endovascular repair (EVAR) by stent-graft (SG) insertion is frequently indicated in patients with intermediate and high-operative risk. Patient selection and stent planning for EVAR is done on CT-scans based on specific anatomic criteria. SG are inserted in the catheterization laboratory under digital substraction angiography (DSA) and fluoroscopic guidance. With this technology, no soft-tissue differentiation is available during the intervention and important information are lacking such as thrombus and aneurysm extension close to proximal and distal landing zones. Our team has recently patented a software allowing the extraction of the AAA (lumen and thrombus) from pre-operative CT-scanner. In collaboration with Siemens medical, the investigators have integrated this technology to the Siemens workstation in the catheterization laboratory. The investigators can now import the aortic lumen and thrombus meshes segmented from pre-operative CT-scans and perform a rigid registration with fluoroscopy and DSA data to enhance visualization of soft tissue during EVAR. Our preliminary results are encouraging in terms of feasibility and visualization. However, the delivery device of the SG and the guidewire used during the intervention are stiff and induce a deformation of aortic lumen and thrombus. This deformation impairs the accuracy of rigid registration. The investigators propose to improve registration accuracy by implementing an elastic deformation of aortic lumen and wall based on the segmentation of endovascular devices (delivery device, guidewires and catheters) inserted during the procedure and by biomechanical modeling.

The purpose of this study is to assess the safety and efficacy rates of the treatment of small intracranial aneurysms with Stryker Neurovascular's Target® 360 Ultra coils which are a type of platinum coils used to occlude aneurysms.