View clinical trials related to Ischemia.
Filter by:The investigators design a randomized, control study to evaluate the therapeutic effect of scalp acupuncture using Jiao's motor area for motor dysfunction in ischemic stroke patients using the following outcomes: motor function, activity of daily living,quality of life.
The risk of early recurrence or progression of acute ischemic stroke is very high, even in patients treated with aspirin. The Chance study show that clopidogrel plus aspirin treatment reduced the risk of recurrent stroke in patients with transient ischemic attack (TIA) or minor ischemic stroke (NIHSS ≤ 3) within 24 hour onset and was not associated with increased hemorrhage events, compared with aspirin monotherapy. However, it is not known whether the dual antiplatelet treatment could reduce the risk of early recurrence or progression in patients with acute mild to moderate ischemic stroke (4 ≤ NIHSS ≤ 10). The investigators hypothesise that clopidogrel-aspirin treatment will be superior to aspirin monotherapy in this group of patients.
This will be a prospective randomized 2 year study of patients admitted to the Hamad General Hospital (HGH) and the Stroke Prevention Clinic with a diagnosis of ischemic stroke (IS) and Transit ischemic attacks (TIAs). After signing of the informed consent forms and initial evaluation and investigations, all patients enrolled in the two arms ( study arm and control arm) of the study will be followed for one year (monthly visits for the first three months followed by visits three months until completion of study: total of 6 follow up visits) and the pre-specified investigations repeated at the one year follow up. In one arm (the control group), the patients will be offered best risk factor management strategies as currently being practiced by stroke specialists at HGH in Qatar. And in the second ( the subject group) arm, with assistance of a nurse-practitioner and pharmacist, the investigators will make aggressive attempts to meet "to target" defined risk factors and have the evaluations and investigations completed as in the initial year cohort. All patients will have risk factor stratification according the Framingham Risk Score (FRS) and the change in score measured over time.The primary objective will be to determine if an approach that utilizes a comprehensive strategy results in a significantly outcome. A clinically 'meaningful' difference in the blood pressure (BP) and lipid control of 10% between the aggressively managed versus patients treated with the standard of care will require minimum of 200 patients in each group (alpha error set at 0.05 and beta error at 0.20, power 80%) to be recruited over 1 year and followed for one year (total study duration 2 years). All patients will have screening magnetic resonance imaging (MRI) (including gradient echo (GRE) sequence), carotid 3D Doppler measurement of plaque volume, and PAD assessments, C-reactive protein (CRP) and evaluation for protein urea at baseline. These studies will be repeated in 1 year at the time of exit from the study. The co-primary objective would be to monitor progression (or regression) of plaque build-up on 3D Doppler imaging of the carotid arteries between the two cohorts. The investigators hypothesize that aggressive management of vascular risk factors to "recommended target levels" will lead to better vascular health. Compared to current practice, comprehensive and coordinated approach at preventive measures will lead to more patients with better control of blood pressure and lipid levels. Improved risk factor management will result in slowing of atherosclerosis and its downstream effects which will be measurable on sophisticated blood and imaging testing. Clinically this will translate into fewer hospital re-admissions.
Adipose-derived regenerative cells (ADRC) will be extracted from lipoaspirate by enzymatic digestion. 10 mL of autologous ADRC suspension injected intramuscularly, close to the site of muscle injury. All patients will receive cell therapy. This is a single arm study with no control.
Patients scheduled for major extremity lower amputation to receive bone marrow cells (cBMA) injected IM in the leg proximal to the amputation in the index limb to prevent ischemic wound complications after surgery.
Myocardial perfusion tomoscintigraphy is a routine medicine procedure to check for the presence and severity of abnormalities of myocardial perfusion, as well as the extension of infarction residua. However, actual imagery devices (gamma cameras) have low resolution and detection sensitivity. A new semiconductor camera has 8 to 10 time higher detection sensitivity and could allow proportionally diminishing injected activities or recording times. Only one pilot study has been recently published on this type of camera, the D.SPECT camera. This study will compare images recorded during 15 to 20 minutes by conventional cameras and 2 to 4 minutes by D.SPECT camera in patients doing tomoscintigraphy under usual conditions. The purpose is to demonstrate the equivalence of images recorded by two camera types for diagnostic information and the secondary purpose is to demonstrate the superiority of the D.SPECT camera in terms of image quality.
The aim of this study is to show for the first time that treatment with intravenous fibrinolysis using rt-PA in patients with recent ischemic stroke is accompanied by increases in circulating levels of BDNF, which may reflect an increase in BDNF synthesis in the brain. The analysis of the recovery of functional and cognitive abilities as well as mood at 3 months will allow us to study the impact of BDNF on these parameters. Thus, depending on the results obtained, circulating BDNF could serve as an early marker of these.
Endovascular treatment of below the knee disease is a well-established therapy to improve outcomes in patients with critical limb ischemia. Several large cohort studies demonstrated the safety and the efficacy of percutaneous recanalization and angioplasty for distal vessel disease. A successful recanalization of foot artery was related to a higher ulcer healing and a reduction of major amputation. Moreover absence of revascularization in a patient with critical limb ischemia is an independent risk factor for mortality. Despite the introduction of new devices dedicated to below the knee vessel disease treatment, with the development of guides and conical balloons, long term patency outcomes are still poor. Restenosis was observed in more than two thirds of patients within 3 months after angioplasty of tibial arteries with a high target lesions revascularization. These re-interventions are characterized by a higher morbidity and mortality due to several comorbidities associated to these patients. These data confirm the need to obtain more lasting results in order to improve long-term outcomes of these patients. Recently, the use of drug-eluting balloons (DEB) has revealed an increase in patency after angioplasty of the femoral artery. On the contrary, results for BTK arteries angioplasty have shown controversial results. The purpose of this study is to evaluate the safety and the efficacy of the Ranger™ SL paclitaxel coated balloon a model of drug eluting balloon in patients with critical limb ischemia.
The current management of ischemic stroke is based on different strategies that may be combined: intravenous thrombolysis in a stroke ICU, intravenous thrombolysis in a telemedicine procedure, endovascular thrombectomy. Given this now rich therapeutic arsenal, it seems necessary to evaluate practices in local care in the field and the impact of these on the prognosis of ischemic stroke victims. The aim of this observational study is to compare these different care practices without interfering with the choice of strategy. A blood sample will also be taken at different times to study the value of growth differentiation factors (GDF) 8, 11 and 15, and Brain-derived Neurotrophic Factor as prognostic biomarkers
Stroke is one of the leading causes of death and disability in China. Intravenous thrombolysis with recombinant tissue plasminogen activator (rtPA) improves the outcome for ischemic stroke patients who can be treated within 4.5 hours of symptom onset. In China, in addition to rt-PA, intravenous urokinase within 6 h has also been recommended by the 2010 Chinese Guidelines for the Diagnosis and Treatment of Patients with Acute Ischemic Stroke, and supported by evidence from two intravenous urokinase thrombolysis trials. Urokinase is used more frequently than rt-PA, mainly because it is cheaper. To describe Chinese experience with thrombolytic therapy for Ischemic Stroke within 4.5h onset, we designed a multicenter, prospective, registry study. The aim of INtravenous Thrombolysis REgistry for Chinese Ischemic Stroke within 4.5 h onset（INTRECIS）was to assess the safety and efficacy of intravenous rtPA, urokinase as thrombolytic therapy within the first 4.5 h of onset of acute ischaemic stroke.