Active clinical trials for "Aneurysm"

AneurysmFlow R1.0 is an approved (i.e. CE labeled, 510k, Health Canada), software tool intended to provide relevant information on the blood flow in a cerebral aneurysm and its parent artery based on angiography. It calculates the Mean Aneurysm Flow Amplitude (MAFA) ratio to measure the volumetric flow rate quotient before and after Flow Diverter Stent (FDS) implantation in the region of interest. The current study is a prospective, single arm, observational, multicenter cohort study to assess the prognostic value of the MAFA ratio for predicting full aneurysm occlusion 12 months after flow diverter placement.

EVAR continues to evolve as a treatment option for AAA. New devices which are specifically designed to perform adequately across the spectrum of potential anatomic presentations for infrarenal EVAR are needed. The Department of Vascular Surgery at Catharina Hospital Eindhoven, The Netherlands initiates the EXCeL Registry. This study will assess the safety and effectiveness of the GORE® EXCLUDER® Conformable AAA Endoprosthesis (CEXC Device) in patients who meet the IFU anatomic criteria (≥15mm proximal neck length and ≤90˚ proximal neck angulation; and ≥10mm proximal neck length and ≤60˚ proximal neck angulation) and in patients with challenging anatomic presentation that may present outside the IFU anatomic criteria. Successful outcomes from this study will provide evidence to support the CEXC Device as an option for expanding EVAR to a broader patient population with more challenging anatomic presentations.

A French, multicenter, prospective, observational, "real-world" assessment of the safety and efficacy of FRED and FRED Jr devices in the treatment of intracranial aneurysms

The French Ministry registered the Fenestrated Anaconda ™ on the List of Reimbursable Products and Services (LPPR) by the French Health Insurance on February 2018 for a duration of 5 years, while taking up the conditions for carrying out the act recommended by the CNEDiMTS (Committee in charge of medical device review), namely the carrying out of a post-registration study for the renewal of the authorization. This renewal of registration is conditioned by the set-up of a long-term follow-up study of all patients treated with the Fenestrated Anaconda ™ in France. To do this, this study will be carried out in partnership with the Federation of Medical Specialties (FSM) and the National Professional Council (CNP) of Vascular Surgery in order to have the data necessary for the renewal of the registration of the Fenestrated Anaconda ™ from the registry called Datavasc developed by the CNP and available online on the FSM's electronic platform.

Aneurysmal subarachnoid hemorrhage (bleeding on the brain due to a ruptured aneurysm) is a serious condition with a high morbidity (incidence of having ill health) and mortality (death). There are approximately 11 cases per 100,000 in the population per year, and approximately 40% of these cases are fatal. (Ingall) Among the fortunate subjects who survive the initial bleed, vasospasm and subsequent stroke are a major cause of morbidity. Vasospasm is defined as a prolonged severe, although reversible cause of arterial narrowing that occurs after bleeding into the subarachnoid space, most commonly after aneurysmal rupture. (Youman) The reduced arterial diameter inhibits blood flow and deprives the brain of oxygen, which often results in a stroke. Vasospasm is a major problem when treating subjects with aneurysmal subarachnoid hemorrhage. For these reasons, it is essential to diagnose cerebral vasospasm early, before permanent deficits develop. There may be another option to solve this dilemma. The field of neuro-monitoring (neurological monitoring) has the technology available to continuously monitor brain activity of these sedated ICU subjects. This may allow for early diagnosis and possibly identify changes in neurologic function before they become symptomatic. In the past, neuro-monitoring was primarily used in the operating room to monitor neurologic function during surgery in and around the spinal cord. Surgery to the spine or spinal cord also carries its own form of risk, either from mechanical trauma to the spinal cord or its nerve roots, or from interruption of the blood supply to these structures. Should damage to nerve fibers occur, the end result could be paralysis, loss of sensation, and onset of severe burning (i.e. neuropathic) pain. The field of intraoperative neuro-monitoring (IOM) was developed to address these risks during spine surgery, whereby nerves rostral (toward the head) or caudal (toward the feet) to the site of surgery are stimulated (usually via electrical pulses) and signals are recorded from the side opposite to the site of stimulation. Thus, the signals carried by nerve fibers are forced to pass through the region at risk from the surgery. In the event that changes in nerve responses are seen, the surgical team is notified, and they can change what they're doing to try and restore signals, thereby preserving function in the nerve fibers. This same technology has been used in the neurosurgical ICU to monitor subjects with severe brain injury from trauma, stroke, intracranial hemorrhage and subarachnoid hemorrhage. Using continuous electroencephalogram (EEG) monitoring combined with somatosensory evoked potentials (SSEPs) (a type of neuro monitoring) has been used to determine prognosis, identify subjects in subclinical status epilepticus (state of brain being in a constant seizure), predict elevations in the intracranial pressure Increased pressure within the skull), and diagnose cerebral hypoxia (not enough oxygen in the brain) (Amantini)

The primary study objective, at this time, is to follow out to 5 years post implant the safety of already enrolled subjects who were treated with the UniFit Aorto-uni-iliac (AUI) Endoluminal Stent Graft (the "study device") for the repair of abdominal aortic aneurysms (AAAs).

Objective The objective of this study is to discover whether an infusion of nicardipine is able to reduce the time taken to achieve electrocerebral silence (ECS) during cardiopulmonary bypass (CPB) for aortic surgery. Hypothesis By inhibiting cold-induced cerebral vasoconstriction, nicardipine will maintain cerebral blood flow and allow more rapid cooling of the brain during CPB. This will manifest as a reduction in the time taken to achieve ECS and also as a reduction in overall CPB time.

The purpose of the study is to describe Sodium Fluoride uptake (using Positron Emission Tomography-Computed Tomography - PET-CT) following Endovascular Aneurysm Repair (EVAR) and to determine whether Sodium Fluoride PET-CT can predict the development of endoleaks.

Stent treatment of thoracic aortic pathologies, including aneurysms, pseudo-aneurysms, dissections, intramural hematomas, penetrating ulcers and ruptures of the isthmus, seems to provide a likely benefit compared to surgery in terms of surgical mortality and severe morbidity. However, the data concerning the long-term fate of these stents are insufficient. For this reason, the French National Health Authority (HAS) requests a 5-year follow-up in relation to the renewal of insurance reimbursement for these stent-grafts. Therefore, this long-term observational study has been set up.

This project is to determine the safety and explore the effectiveness of allogeneic (not cells of the participant but those of another human) mesenchymal stromal cells (MSCs) in decreasing inflammation and possible enlargement of the participants' abdominal aortic aneurysm. Participants will be selected as a possible subject because of an abdominal aortic aneurysm discovered on the ultrasound or computed tomographic ("CT") scan requested by the participants' doctor. The purpose of this study is to collect information that will be used to determine if MSCs can be used to decrease inflammation and possibly slow down enlargement of the participants' aneurysm. The investigators will also be collecting blood samples to study special inflammatory cells that cause aneurysms as well as asking participants to have a "PET" (positron emission tomography) scan that can measure inflammation directly in the participants' aneurysm.