Active clinical trials for "Ischemia"

The purpose of this investigation is to compare subjects at high risk for silent myocardial ischemia in the placebo group to subjects at high risk for silent myocardial ischemia in the ranolazine group to determine if ranolazine can be used as a treatment to decrease silent myocardial ischemia (SMI). Subjects at high risk for silent myocardial ischemia are defined in this protocol as diabetics with stable ischemic heart disease. This study will look at the impact ranolazine treatment has on biomarkers that have been shown to be highly associated with increased risk of morbidity and mortality in relation to SMI. If the hypothesis is correct, further studies can be conducted to determine if treatment with ranolazine has impact on long-term outcomes such as hospitalizations, myocardial infarction, congestive heart failure or sudden cardiac death.

Diabetic foot ulcers often progresses after many years of diabetes where the patients system is so damaged that normal heeling of ulcers cannot happen. The physician at the clinic examines the foot, measuring its circulation and sensitivity. The measures are the blood pressure in comparison between foot and upper arm and oxygen level in the foot. The measurements have a direct connection to the blood circulation, but it doesn't visualize the blood circulation. Development of MR methods without the use of contrast agents have become so good that images of the blood veins can be used in treatment. This means that the MR images provide important information about the patient vessel wall stiffness and blood circulation without the use of the damaging substances. Hence the physician can perform the MR examination and in comparison with the test performed at the clinic he can make an improved and without risk diagnose. Using MR at a lot earlier stage in the treatment is expected to reduce the number of amputations. This is not only an economic advantage, but also an improvement of the patient quality of life. The objective of the study is to investigate type 1 diabetics oxygen level, vessel wall stiffness, blood circulation, tissue contribution and blood pressure in the foot with the use of conventional measurements in their treatment and with the added use of MR methods. This will provide the physician with valuable information of the patient illness and is expected to play an important role in the prevention of diabetic foot ulcers. We expect that MR research leads to a much improved prevention and treatment of aggressive and destructive diabetic foot ulcers. This will increase the general quality of life and reduce the large number of amputations performed every year.

The purpose of project is to answer fundamental questions about the mechanisms underlying mental stress ischemia in patients with coronary artery disease, mood disorders, or both, and to identify potential biomarkers and psychosocial risk factors associated with this condition. To achieve this goal, investigators will use cutting-edge cardiovascular and functional neuroimaging tools to study mental stress ischemia in a carefully controlled laboratory setting in subjects recruited from four patient populations: 1) patients who recently sustained a myocardial infarction; 2) patients undergoing non-emergent invasive coronary angiography (with and without known coronary artery disease); 3) patients with a diagnosis of major depressive disorder; and 4) patients with a diagnosis of bipolar 1 or bipolar 2 disorder.

To analyze the real situation of intravenous thrombolysis in acute ischemic stroke in China

Severe strokes, including large artery acute ischemic stroke and intracerebral hemorrhage, continue to be the leading cause of death and disability in adults in the U.S. Due to concerns for a poor long-term quality of life, withdrawal of mechanical ventilation and supportive medical care with transition to comfort care is the most common cause of death in severe strokes, but occurs at a highly variable rate. Decision aids (DAs) are shared decision-making tools which have been successfully implemented and validated for many other diseases to assist difficult decision making. The investigators have developed a pilot DA for goals-of-care decisions for surrogates of severe, critically ill stroke patients. This was developed through qualitative research using semi-structured interviews in surrogate decision makers of traumatic brain injury patients and physicians, and adapted to severe strokes. The investigators now propose to pilot-test a DA for surrogates of critically ill severe stroke patients in a feasibility trial.

The TRUST study is a non-interventional, prospective, multicenter, international, single arm and non-inferiority study. It is designed to evaluate the efficacy and safety of mechanical thrombectomy of the CATCHVIEW device compared to SOLITAIRE 2/FR based on an objective performance criterion (OPC) defined with available and published clinical evidence gathered through the Solitaire clinical trials in the arterial revascularization of patients with acute ischemic stroke.

This is a prospective, single arm, open, single centre clinical investigation designed to examine the feasibility and safety of the IscAlert™ device in patients scheduled for limb (arm/leg) surgery with tourniquet. IscAlert is measuring carbon dioxide in muscular and subcutaneous tissue. IscAlert is inserted into normal muscle and subcutaneous tissue in ischemic (operated limb with a tourniquet) and non-ischemic limb (non-operated limb).After the tourniquet is inflated, ischemia develops in the muscles and subcutaneous tissue. This will result in an increase in carbon dioxide, which will be detected by the sensor on the operated extremity, while the sensor on the non-operated will show normal values. After releasing the tourniquet cuff, the muscle will be reperfused and the carbon dioxide level is expected to decrease into normal levels. 50 number of patients will be enrolled to undergo the procedures. The IscAlert will be removed from the patient before the patient is discharged from the operating room, but in 25 of the patients, IscAlert™ will be inserted for 72 hours in the operated extremity after the end of surgery. After this, the sensors are removed.250 Devices is planned to be used in this clinical study.

The purpose of this study is to investigate if remote ischemic preconditioning by combining limb ischaemia with electric muscle stimulation of the ischemic muscle provokes better results in preconditioning the human heart than limb ischaemia alone does.

The goal of this observational study is to compare the differences in the features of cerebral multifrequency EIT(cMFEIT) images between healthy subjects and patients with brain diseases and to explore the possibility of applying multifrequency EIT to intracranial abnormality detection.16 healthy volunteers and 8 patients with brain diseases were recruited as experimental subjects, and the cerebral EIT data of 9 frequencies in the range of 21 kHz - 100 kHz of all subjects were acquired with an EH-300 MFEIT system.

Behçet's Disease activity was evaluated using BD Current Activity Form (BDCAF). Serum calprotectin and IMA concentrations were compared among active BD cases, inactive BD cases and control subjects.