Active clinical trials for "Ischemia"

This project will investigate the evolution of treated and untreated stroke in patients recruited from the collaborative brain stroke program between NINDS, CC, and Suburban Hospital. The study will use anatomical and functional imaging techniques with emphasis on the acute and subacute stage (less than one month) of the disease. As the availability of new therapeutic options for the management of acute brain stroke increases, the need to define the evolution of the disease becomes paramount, particularly as therapeutic windows, defined by known and perhaps yet undiscovered parameters, may exist. Defining these parameters will be based on state-of-the-art imaging technology with the potential of clarifying the division between ischemia (reversible damage) and infarction (irreversible). Measures of lesion size and distribution along with vascular morphology, diffusion, perfusion, flow-related, and metabolic measures will be obtained over time. We foresee these measurements will significantly develop our understanding of cerebral ischemia and introduce diagnostic and quantitative tools to guide therapy and measure its efficacy.

Women suffer from cardiovascular diseases 10 years later than men, therefore female sex has been considered as a 'protective factor'. However, the risk of cardiovascular disease in women increases rapidly after menopause and the declining levels of endogenous estrogen is thought to be the causative factor. Furthermore, Postmenopausal hormone therapy (HT) decreases the severity and intensity of menopausal symptoms and improves women's quality of life. Until the last 10 years, based on the results of observational studies, postmenopausal HT may protect women against cardiovascular events and decrease the risk of coronary artery disease by 35-50%. However, recent randomized primary and secondary prevention trials did not support the cardioprotective effect of HT. The aim of this study is to assess the effect of hormone therapy on serum ischemia modified albumin (IMA) levels. Thirty surgical menopausal women who admitted to Karadeniz Technical University, Faculty of Medicine, Department of Obstetrics and Gynecology during 1-year period and diagnosed as menopause and planned to have hormone therapy for menopausal symptoms were enrolled for this prospective study. The serum İMA levels were recorded before and after (3 months, 6 months, 12 months later) hormone treatment (2 mg Estradiol Hemihidrat).

This clinical trail will evaluate the effect of Sanchitongshu combined with antiplatelet drugs (Aspirin or Clopidogrel) in the treatment of high-risk ischemic stroke patients in adults. Half of participants will receive SanchiTongshu and one of antiplatelet drugs (Aspirin or Clopidogrel) in combination, while the other half will receive a placebo and one of antiplatelet drugs (Aspirin or Clopidogrel).

The objective of the study is to assess the performance characteristics of Apo J-Glyc as a novel biomarker for the early detection of myocardial ischaemia in patients with suspected acute coronary syndromes.

Digital Variance Angiography (DVA) is a new tool in medical imaging with proven image quality reserve. The previously observed quality reserve of Digital Variance Angiography (DVA) in lower extremity angiographies, allowed to lower radiation exposure by 70 % during DSA in lower extremity diagnostic angiographies with non-inferior image quality. The aim of this study is to apply this non-inferior image quality and use it for radiation exposure reduction in diagnostic lower limb angiography. The project would prospectively block-randomise (50:50) patients, who undergo elective diagnostic angiography into two groups: a comparator group examined by means of conventional DSA using a standard care protocol (Siemens Artis Zee, Extremities Care setting, 1.2 µGy/frame) (Group B) and a study group examined by means of DVA using a low-dose protocol (0.36 µGy/frame corresponding to 70% decrease of radiation dose) (Group A). During each procedure the investigators record radiation exposure (cumulative dosage, dose area product) and contrast media usage and procedural time then compare the results of the groups. Qualitative image review is done to compare conventional DSA and reduced radiation exposure DVA images after image acquisition. Our hypothesis is that with the previously proven non-inferior image quality, the investigators will be able to reduce radiation exposure of the participants and also staff members in everyday clinical practice.

This is a retrospective analytical study conducted at Vascular and Endovascular surgery Department, Mansoura University Hospital, including all patients admitted at the two periods first six months of 2019 and 2020.To demonstrate the effect of COVID-19 pandemic on the practice of emergency vascular surgery and critical limb threatening ischemia interventions by comparison two periods first six months of 2019 and 2020.

Background: Acute mesenteric ischemia is a vascular emergency with high mortality because of ambiguous symptomatology and a lack of early diagnostic markers. Lactate dehydrogenase has been described as a mortality biomarker and bowel necrosis length too. Nevertheless, the association between them has been mildly studied. Our objective was to evaluate the association between serum lactate admission levels, bowel necrosis extension, and mortality. Additionally, we performed a mortality characterization. Materials and Methods: A retrospective cross-sectional study was designed. We reviewed patients' clinical records with acute mesenteric ischemia that attended a hospital between 2012 and 2018. We compared serum lactate admission levels with bowel necrosis length and mortality. A receiver operating characteristic curve was performed on the last association. As post hoc analysis, a classification and regression tree on mortality was fitted.

This study builds, in part, upon preliminary results generated as part of the Pharmacogenomics Anti-Platelet Intervention (PAPI) Study (NCT00799396). The purpose of this investigation is to assess the impact of genetic variation in the carboxylesterase 1 (CES1) on response to clopidogrel as well as dual antiplatelet therapy (i.e. clopidogrel and aspirin), as assessed by ex vivo platelet aggregometry, in healthy Amish individuals. The investigators hypothesize that participants who carry alleles that modify the activity or expression of CES1 will have altered response to clopidogrel as well as dual antiplatelet therapy.

This registry is a clinical post-market evaluation of the Genoss DES in subjects requiring coronary revascularization with Drug Eluting Stents (DES).

This is a randomized controlled trial designed to test an intervention (Remote ischemic preconditioning) in patients undergoing carotid endarterectomy (CEA).Remote ischemic preconditioning(RIPC) with transient upper limb ischemia/reperfusion is a novel, simple, cost-free,non-pharmacological and non-invasive strategy.The purpose of this study is to evaluate the effects of Remote Ischaemic Preconditioning on perioperative ischaemic injury in patients undergoing carotid endarterectomy compared to control intervention.The outcomes of interest include neurocognitive function,clinical outcomes,and biomarkers of brain injury.