View clinical trials related to Aneurysm.
Filter by:This is a prospective, single-arm, multi-center post-market observational study assessing the performance of the Pipeline™ Flex Embolization Device with Shield Technology™ in subjects undergoing treatment for intracranial aneurysms in a large real-world, post-market setting.
Intracranial aneurysm (IA) is an asymptomatic cerebrovascular abnormality affecting 3.2% of the general population. The devastating complication of IA is its rupture, resulting in subarachnoid haemorrhage that can lead to severe disability and death. Unfortunately, there are neither reliable clues nor diagnostic tools to predict the formation and/or the fate of an IA in a given individual. Also, there is no pharmacological drug available to prevent the rupture of aneurysm and subsequent subarachnoid haemorrhage. Current treatments are invasive with a significant risk of procedural morbidity. Thus, still now, the management of patients with IA remains extremely challenging and still controversial. Although the pathogenesis of IA has been the subject of many studies for the last decade, the mechanisms underlying IA formation, growth and rupture are still mostly unknown and relevant animal models of IA are not available. Familial history of IA predisposes to IA formation and rupture and increasing evidence suggest a genetic component of IA formation, with heterogeneous modes of inheritance and penetrance. This project, gathering neuroradiologists, geneticists and vascular biologists, addresses the urgent need to understand the pathogenic mechanisms of IA to develop diagnostic and predictive tools of risk of IA. The investigators propose to identify IA-causing variants by whole-exome sequencing in familial forms of the disease. The investigators hypothesises that the functional analysis of the causal/susceptibility variants thus identified will provide clues to understanding the pathological mechanisms of IA formation, and the bases for developing diagnostic tools. This project aims at meeting this challenge. Based on preliminary data that already allowed to identify such a variant, and the combination of genetic and functional investigations, the specific objectives of this project are: - To identify IA-causing variants in familial forms of the disease by whole-exome sequencing; - To understand the function of these genes/variants in the formation and rupture of IA by molecular and cellular approaches and generation of relevant animal models; - To discover potential biomarkers of risk of IA formation and/or rupture.
The LUCY Study is a prospective, consecutively enrolling, non-randomized multi center post-market study to evaluate the low profile (14F) Ovation® Abdominal Stent Graft Platform when used in the endovascular treatment of female patients.
This is a prospective, randomized controlled trial to determine if using FloTrac/EV1000 system in neurosurgical patients undergoing craniotomies for aneurysm repair or tumor resection complicated by cerebral edema, or complex spinal surgery including multi-level scoliosis correction, is a more effective way of monitoring fluid.
After obtaining approval from the Institutional Review Board of our institution, written informed consent is obtained from patients undergoing interventional cerebral aneurysm coiling procedure are enrolled in this prospective study and randomly allocated into one of two groups: Group-C (n=10) and Group-HES (n=10). All recruited patients will be given patient identification number (PIN) for the present study of 01-20 according to their order of interview and recruitment. Investigators will prepare 10 yellow and 10 green cards, which will be inserted in 20 thick-paper envelopes. Then, all envelopes will be sealed, mixed and randomly allocated to get numbers of 01 to 20 (Envelop number). After printing the envelope number outside envelope, all sealed envelopes with cards will be conveyed to and kept in pharmacy department. According to the color of the card, attending anesthesiologists will give crystalloid for yellow card or HES for green cards, respectively, to maintain stroke volume variation < 15 during volume controlled ventilation (8 ml/kg tidal volume) of O2/air mixture. Patient data and statistical analyses: Patient's data whole blood viscosity, PaO2, FiO2, Hemoglobin, urine amount, s-glucose will be determined from the patients' medical record after patient's discharge. All statistical analyses will be performed after the 20th patient's discharge and data acquisition
In neurosurgical anesthesia, propofol based total intravenous anesthesia (TIVA) is frequently used due to brain relaxation and less effect on electrophysiologic monitoring. Response to propofol can vary between individuals and be associated with clinical factors including age and weight, and genetic polymorphism. Because the importance of rapid recovery in neurosurgery with long operation time is emphasized recently, the choice and dose adjustment of anesthetics should be determined according to clinical and genetic factors. Recently, researches about genetic variations have been performed with single nucleotide polymorphism (SNP). The aim of this study is to determine SNPs associated with propofol recovery and response in Korean adult population undergoing propofol based TIVA for clipping of unruptured cerebral aneurysm.
The MicroVention Low-profile Visualized Intraluminal Support (LVIS*) Device is intended for use with bare platinum embolic coils for the treatment of unruptured, wide neck (neck greater than or equal to 4 or a dome to neck ratio less than two), intracranial, saccular aneurysms arising from a parent vessel with a diameter of greater than or equal to 2.5mm and less than or equal to 4.5mm.
In this study, patients will be observed who receive an E-liac Stent Graft for treatment of isolated iliac aneurysms or an E-liac Stent Graft in combination with one of the following AAA stent grafts: E-tegra Stent Graft, Endurant AAA Stent Graft, Zenith AAA Endovascular Graft, Gore Excluder AAA Endoprosthesis for treatment of aorto-iliac aneurysms. Objectives of this post-market registry are: Primary: To prevent the risk of rupture and death by the treatment of common iliac aneurysm with an iliac branched stent graft (E-liac, JOTEC) Secondary: Evaluation of safety and feasibility of the E-liac Stent Graft System used in endovascular treatment of uni- or bilateral aorto-iliac or iliac aneurysm.
The purpose of this study is to evaluate the effect of preoperative remote ischaemic preconditioning (RIPC) on organ damage and the functional characteristics of arteries in patients undergoing vascular surgery. In addition, we investigate the connection between RIPC and changes in the functional characteristics of arteries and low molecular weight metabolites.
A single site cross-sectional comparison of paired diagnostic imaging modalities. This study will show the sensitivity and specificity of CEUS in detecting the various types of endoleaks, in comparison to tCTA, following EVAR. It will collect data to allow comparison of diagnostic accuracy across modalities including CDU, CEUS and tCTA. It will collect time taken to perform the various types of scan, to allow healthcare costs to be calculated for each imaging modality.