Active clinical trials for "Aneurysm"

The study is an observational, European, multi-center, prospective assessment of the clinical utility of the 0.017 WEB Aneurysm Embolization System in subjects with intracranial aneurysms deemed appropriate for endovascular treatment.

The aim of this study is to evaluate the accuracy and reliability of intra-operative TEE after the induction of anesthesia when assessing proximal thoracic aorta diameters in a cohort of aortic aneurysm patients.

According to the current view, cerebral aneurysms are acquired degenerative lesions resulting from hemodynamic stress. This single-center case-control study will be carried out at the Department of Neurosurgery, Regional Hospital in Sosnowiec, Medical University of Silesia in Katowice, Poland between June 2015 and June 2017. The aim of the study is to determine morphometric and hemodynamic parameters of aneurysmal and non-aneurysmal middle cerebral artery (MCA) bifurcations and to analyze their relationship with aneurysm formation. A minimum of 75 cases and 75 age- and sex-matched controls will be required for the study. Characteristics of the MCA bifurcations will be determined with computed tomography angiography (CTA) and transcranial color-coded sonography (TCCS). The following variables will be evaluated as potential risk factors for MCA aneurysm formation: radii and cross-sectional area of the main MCA trunk and its branches, tortuosity of MCA trunk, asymmetry ratio, area ratio, the angle between the post-bifurcation branches, the angles between the MCA trunk and the larger and smaller branch, volume flow rate, mean flow velocity and pulsatility index of the MCA. All morphometric and hemodynamic parameters will be assessed as potential risk factors for MCA aneurysm formation.

Purpose of the study is the evaluation of the applicability of the percutaneous technique through double Proglide and Pre-Close Technique to the treatment of complex aortic aneurysms with thoracic endoprosthesis (TEVAR), fenestrated or branched (F / B-EVAR) in which patient-related factors, the devices used or the procedure, could affect the performance.

The purpose of this study is to evaluate whether there is an increased risk of achilles tendon rupture (ATR), retinal detachment (RD) or aortic aneurysm and dissection (AAD) following exposure to fluoroquinolone (FQ) or other antibiotics (amoxicillin, azithromycin, trimethoprim and trimethroprim/sulfamethoxazole) or febrile illness not treated with antibiotics, using a study design that minimizes the impact of confounders not usually captured in health services databases such as heredity or smoking.

Patients admitted to Haukeland University Hospital with either UIA or aSAH underwent a measurement of bioelectrical impedance and body mass composition using InBody 10. Lipids and lipoproteins were collected from plasma. 60 patients in total were included in the study.

In this study, 20 regional neurosurgery centers across the country will be included, and the study cohort will be constructed on the basis of the IARP-CP cohort.The artificial intelligence platform was used to analyze the clinical, morphological, hemodynamics, aneurysm wall characteristics and other factors of unruptured aneurysms, as well as the relationship between these factors and the risk of aneurysm instability, seek the potential risk factors, and finally establish a multi-dimensional prediction model of rupture risk of intracranial aneurysms.

Studies on radiation induced patients' skin lesions in interventional radiology highlighted the need for optimized and personalized patient dosimetry and adapted patient follow-up. Measurements using Gafchromic® films or thermoluminescent dosimeters have long been the only way to accurately evaluate the maximum absorbed dose to the patient skin. However as these dose measurements are tedious and expensive, they could not be systematically applicable in clinical practice. Therefore, more practical calculation methods have been developed. These software programs calculate the skin dose using dosimetric information from images DICOM header or radiation dose structured reports (RDSRs). Validation studies of these software programs are rare and when existent have many limitations. Radiation Dose Monitor (RDM from Medsquare) is a software program for archiving and monitoring of radiation dose (DACS, Dosimetry Archiving Communication System) used in routine in the investigator's hospitals. A new functionality developed in RDM allows quick estimation without in-vivo measurements of the absorbed dose to the skin of the patient. Comparing RDM calculations with in-vivo measurements will enable this software validation so that it can be used in clinical routine. Main objective: to validate RDM software for calculating patient skin dose in interventional radiology.

The main purpose of this study is to determine if PET-imaging can be used to evaluate inflammation level of intracranial aneurysms, thus helping to evaluate the rupture risk of intracranial aneurysm.

Abdominal aortic aneurysm (AAA) is a multifactorial degenerative disorder, which if untreated might lead to catastrophic complications. The treatment for AAA includes open and endovascular repair, both of which carry a significant degree of risk. Thus, researchers have performed several studies addressing simple and readily available risk stratification markers, such as complete blood count in patients undergoing open AAA repair. The neutrophil to lymphocyte ratio (NLR) has been frequently used as a marker of systemic inflammatory response, which reflects neutrophilia and lymphopenia. The primary pathophysiology of AAA involves chronic inflammation in the aortic wall and atherosclerosis, accompanied with thrombosis. NLR was proposed as a fair indicator for poor prognosis in patients with AAA. The mean platelet volume (MPV) is the marker of platelet activation and an indicator of the activation of thrombus formation. Moreover, it is reportedly associated with the prognosis of patients with cardiovascular diseases. Moreover, the platelet to lymphocyte ratio (PLR) suggests thrombosis and inflammation and indicates a high risk of cardiovascular events in various groups of patients. The PLR is associated with poor prognosis following AAA repair. Despite accumulating evidence for the prognostic value of white blood cell counts in abdominal aortic aneurysm, few studies have investigated the value of these parameters, including NLR, MPV, and PLR, in patients undergoing AAA open repair. The investigators aimed to investigate if preoperative neutrophil to lymphocyte ratio (NLR), platelet to lymphocyte ratio (PLR), or mean platelet volume (MPV) could be used to predict 1-year mortality in patients undergoing open abdominal aortic aneurysm (AAA) repair.