View clinical trials related to Arterial Occlusive Diseases.
Filter by:This study aims to confirm the safety and effectiveness of the INDIGO Aspiration System in patients requiring immediate treatment for acute lower extremity artery occlusion, acute superior mesenteric artery occlusion, or severe acute deep vein thrombosis. Primary objective of the study is to collect predetermined data on use, safety and effectiveness, including clinical and technical performance of the INDIGO System in Japan.
To demonstrate the efficacy and safety of the mechanical thrombectomy device (JETi 6F and 8F) for treatment of patients with symptomatic peripheral artery disease (PAD) due to acute or acute on chronic occlusions of the femoral and/or popliteal arteries and the first 10 cm of the below-the -knee arteries.
The goal of this clinical study is to evaluate the safety and efficacy of stenting for revascularization treatment of chronic middle cerebral artery (MCA) occlusion in patients with chronic MCA occlusion. The main questions it aims to answer are: 1. Whether stenting treatment can improve blood flow restoration in chronic MCA occlusion. 2. If stenting can reduce the rates of reocclusion. 3. How stenting affects the recovery of neurological functions in these patients. Researchers will compare the stenting group, which received stenting revascularization in addition to aspirin treatment, to the control group, which received only aspirin treatment to see if stenting treatment provides superior outcomes in terms of neurological function improvement and safety profile. Participants will: 1. Undergo full cerebral angiography to identify the occlusion site. 2. All participants will be monitored for post-procedure complications and neurological function using the Modified Rankin Scale (mRS) and National Institutes of Health Stroke Scale (NIHSS) before and after treatment. 3. Participants will be followed up for three months post-treatment to assess the long-term efficacy and safety of the stenting procedure.
The SupPORT Registry aims at collecting real-world from Portuguese centers performing femoral-popliteal revascularization with Supera (r) implants. This is a prospective non-randomized non-controlled consecutive registry.
Acute central retinal artery occlusion is associated with a poor prognosis and optimal treatment is not defined as randomized control trials struggle to enroll patients in part due to delayed diagnostic. Patient lack of knowledge and difficult access to ophthalmologists in emergency situations delay the diagnostic. A simple, rapid and widely accessible method that can recognize acute central retinal artery occlusion in color fundus photographs could benefit patients and doctors.The prurpose of this study is to develop, train and test a deep learning system.
Purpose: Peripheral artery disease (PAD) is associated with elevated oxidative stress, and oxidative stress has been implicated as the cause of reduced endothelial reactivity in individuals with PAD. Endothelial function is important because the endothelium contributes to the dilation of arteries during exercise, thereby implicating impaired endothelial function as a mechanism contributing to exacerbated exercise-induced ischemia. Therefore, the purpose of this study is to test the hypothesis that acute exogenous diroximel fumarate (Vumerity) intake will improve antioxidant capacity, thereby reducing oxidative stress and improving vascular function and walking capacity in those with PAD. Eligibility: Individuals with PAD will be deemed eligible for this study if they 1) are 50-75 years old and postmenopausal, 2) have a positive history of exercise-limiting claudication (Fontaine II or III), 3) do not have renal impairments, 4) do not have Fontaine stage IV PAD, and 5) are not currently pregnant or nursing. Age-matched controls will be deemed eligible for this study if they 1) are 50-75 years old and postmenopausal, 2) have an ABI greater than 0.9 (no PAD), 3) do not have exercise-limiting diseases or injuries, 4) do not have renal impairments, and 5) are not currently pregnant or nursing. Intervention and Evaluation: During this study, participants will be administered diroximel fumarate or a placebo, and the acute effects of diroximel fumarate on vascular function and walking capacity will be assessed. Vascular function and walking capacity will be assessed with flow-mediated dilation, arterial stiffness, head-up tilt test, blood biomarkers, near-infrared spectroscopy, and a treadmill test. Follow-up: There will be a follow-up visit to assess blood work after diroximel fumarate.
The short-term and long-term efficacy of recanalization therapy needs to be further confirmed by large-sample prospective studies. The comparison of success rate, complication rate and efficacy among the three recanalization modalities also needs to be further explored. The purpose of this cohort study is to observe the success rate, efficacy and safety of recanalization treatment for non-acute occlusion, and to further compare the advantages and disadvantages of CEA, endovascular intervention and hybrid surgery.
The present investigation is designed as a single-blind, randomized, controlled, bicentric trial. The objective is to ascertain whether the subcutaneous administration of enoxaparin sodium for prophylactic anticoagulation during transradial hepatic arterial infusion chemotherapy (HAIC) can diminish the incidence of radial artery occlusion (RAO) post-procedure
There has been consistent research on the cerebral blood flow features in ischemic stroke patients with acute occlusion of major intracranial arteries. However, studies analyzing the overall features of the major intracranial artery blood flow in the periods of pre and post-recanalization are still lacking. Time-of-flight magnetic resonance angiography (TOF-MRA) is extensively utilized to evaluate the intracranial arteries. The arterial signal intensity from MRA-TOF varies across subjects and arterial subtypes, leading to the development of the Signal Intensity Gradient (SIG) concept. SIG has demonstrated a strong correlation with Computational Fluid Dynamics (CFD), a known method for reflecting wall shear stress. SIG could be associated with the pathophysiology of wall shear stress. We aim to investigate the blood flow patterns and characteristics in the periods of pre and post-recanalization using SIG.
This study focuses on a population of adult patients placed under peripheral Veno-Arterial Extracorporeal Membrane Oxygenation (VA-ECMO) for refractory cardiogenic shock. Cardiogenic shock, primarily caused by myocardial infarction, is associated with a high mortality rate that remains around 50%, despite advancements in the field of coronary reperfusion. VA-ECMO is a rapidly growing cardiac support technique worldwide. Its goal is to improve peripheral organ perfusion even as myocardial damage continues, thereby enhancing the prognosis of patients with severe multiorgan failure. VA-ECMO is a temporary cardio-respiratory support technique based on the principle of extracorporeal circulation. However, patients under VA-ECMO are at risk of experiencing various complications, including infectious, thromboembolic, hemorrhagic complications, or malfunctions of the ECMO machine itself, with the incidence increasing with the duration of assistance. Numerous authors and scientific reviews highlight the increased risk of Acute Pulmonary Edema (APE) in patients under peripheral VA-ECMO, attributing it to the elevation of afterload induced by retrograde arterial reinfusion against the residual native blood flow, hypothetically leading to an increase in Pulmonary Artery Occlusion Pressure (PAOP). This phenomenon is presumed to intensify as the VA-ECMO reinfusion rate increases. Furthermore, APE under ECMO-VA represents a turning point in the patient's course. Brechot et al. demonstrated that patients who developed APE under VA-ECMO had a prolonged ECMO duration, a higher reliance on mechanical ventilation, an extended stay in critical care, and a higher mortality rate compared to patients who had previously undergone a left ventricular unloading technique (aimed at reducing PAOP and the risk of APE). However, until now, no physiological study has assessed the specific effect of the variation in peripheral VA-ECMO flow on the change in PAOP during a dedicated protocol. It is with the aim of addressing this question that the investigators are considering the PAPO-Flow study.