Active clinical trials for "Myocardial Ischemia"

The study evaluates the efficacy of intravenous levosimendan treatment started during a coronary artery bypass operation to wean patients from a heart lung machine.

The purpose of the study is to determine whether BMS068645 is as effective as Adenosine SPECT at detecting blockages in heart arteries, and to determine if it will have fewer side effects

Patients with narrowed heart arteries who undergo coronary angiography (imaging of the heart's blood vessels) may participate in this "heart mapping" study designed to gain information about the condition of different areas of the heart muscle. In coronary angiography, a thin tube called a catheter is inserted through a small incision in the groin and pushed up to the heart. There, a contrast dye is injected, revealing areas of blockage in the coronary arteries-the vessels that supply blood to the heart muscle. As soon as the angiography is completed, patients in this study will undergo another procedure called "Biosense mapping." For this procedure, a special catheter with a tiny sensor at the tip will be inserted into the sheath that was used for the angiography and advanced to the heart's main pumping chamber-the left ventricle. The sensor detects the pattern of an electromagnetic field generated from a pad under the patient, and an image of the precise location of the catheter in 3-dimensional space can be seen on a computer screen. The catheter is then navigated to various precise locations in the ventricle, producing an electromechanical map that distinguishes scarred muscle tissue from healthy tissue-information that can be important in guiding treatment. When this mapping is completed, the patient will be given a drug called dobutamine to increase the heartbeat, and the mapping will be repeated. The heart may also be mapped while the heart rate is increased with a pacing catheter to simulate exercise. The test will be stopped if adverse side effects develop. Patients in the study will also have magnetic resonance imaging (MRI) and PET (positron emission tomography) scans to get additional information about the heart muscle, such as blood flow and metabolism rate.

To determine the value of electrophysiologic (EP)-guided antiarrhythmic therapy in coronary heart disease patients at increased risk for sudden death. The study included a controlled clinical trial and a registry.

To compare the efficacy of medical or surgical (coronary artery bypass graft) therapy with regard to survival and quality of life in patients with unstable angina and requisite coronary anatomy as defined by angiography.

Most male smokers with coronary heart disease resume smoking after hospital discharge. The main reason for failure to quit smoking is lack of motivation. However, few studies have used individual health education models to explore the effectiveness of smoking cessation according to the stage of change in smoking cessation behavior of patients. The purpose of this study was to examine the effectiveness of health education and counseling on the stages of change, smoking decisional balance, and self-efficacy of smoking cessation in smokers with no intention of quitting.

The goal of this observational study are 1) to assess the effectiveness of modalities and/or their combination of multimodal non-contact information in predicting coronary artery disease; 2) to prospectively validate the performance of the developed artificial Intelligence models in predicting coronary artery disease.

The goal of this observational study is to understand and compare an alternative model of care in comparison to the usual model of care in include male and female participants ≥18 years of age with a history of ASCVD (hear and blood vessels diseases) or high-risk participants who have elevated bad cholesterol (LDL-C ≥1.8 mmol/L). The alternative model of care includes telephone support calls from a study nurse (after visits 1,2 and 4) and text messages to your mobile phone with healthy heart information. The main question it aims to answer is to understand and compare an alternative model of care in comparison to the usual model of care by evaluating the study participants bad cholesterol values after 180 and 365 days of the study. Each participant will take their medications as per usual care but may have the addition of Inclisiran, 284 mg 1.5 ml liquid in a single-use prefilled syringe for under skin administration. In accordance with the current medical practice guidelines for treating heart related conditions, inclisiran and its product information will be made available for use in both care models. All the participants who decide to take part in this study will be requested to do the following: Answer any questions from the study doctor or the study staff as accurately as possible when asked about changes in health status, medications, heart health, visits to other doctors or hospital admissions, planned surgery, even if they think none of these are related to the study. Study doctor will be able to inform them of which medications you can and cannot take as part of this study. To use mobile phone to receive text messages and/or questionnaires as proposed in the new model of care. Advise the study doctor if they plan to move away from the geographical area where the study is being conducted during the study period. Take the medications for cholesterol lowering treatment (such as a statin and/or ezetimibe) that are prescribed by the study doctor. Tell the study doctor or study staff as soon as possible about suspected participant / participant partner pregnancy. Tell the study doctor or study staff if they change their mind about taking part in the study. Attend all the visits (screening visit, visits 1, 2, 3, 4 and visit 5). Provide all the information that will enable the study team to contact them, i.e., inform the study staff if contact details change, provide contact details of a family member, etc.

Chronic angina pectoris refractory to medical and revascularization therapies is a disabling medical condition and a major public health problem. Patients with refractory angina have limited treatment options. One proposed therapy modality is transcatheter implantation of a reduction stent in the coronary sinus. Coronary sinus reduction stents have been shown to reduce angina burden considerably and to improve quality of life. The reduction stent is assumed to increase myocardial perfusion and reduce myocardial ischemia, but the mechanism of action is poorly understood. The aim of this project is to assess the myocardial ischemia burden in patients with refractory angina who are undergoing a transcatheter coronary sinus reducer procedure. This is a clinical non-randomized self-controlled cohort study with blinded outcome adjudication for changes in myocardial perfusion. Patients with refractory angina will be systematically examined before implantation of the coronary sinus reduction stent and after 6 months. The primary outcome, changes in myocardial perfusion on the gold standard 15O-H2O PET/CT will be evaluated on blinded perfusion scans where the stent is invisible. To provide context to the findings, we will also evaluate whether changes in myocardial ischemia are associated with less angina and better cardiac function parameters. Effects of stent implantation on angina symptoms and quality of life could be affected by a placebo effect. Treatment options for patients with refractory angina is needed, and results from the present study will explore if coronary sinus reduction stents are improving myocardial ischemia in this patient group. Signs of improved objective perfusion will inspire confidence in the method.

A cross-sectional analysis of 200 heart transplant recipients, combining in-depth phenotyping and risk factor assessment (cardiac MRI, coronary angiogram with OCT, cardiorespiratory exercise tests, exogenic factors like nutrition, smoking, lipid profile) with short-read whole-genome sequencing to elucidate the interplay of established PRS from the literature and exogenic risk factors with respect to HTx outcomes will be carried out. Besides that, a long-read whole-genome sequencing of 100 newly transplanted recipients and their corresponding donors and extend latest bioinformatics methods developed by the study to analyze long-read data will be performed. This will enable a comprehensive and integrated analysis of structural variants, polygenic risk, high-penetrance variant genotypes, immunogenetic (major and minor histocompatibility), and individual lifestyle risk factors in a unique donor-recipient cohort, elucidating the extent of within-cohort variability and cross-correlations between the considered potential risk factors and an exploratory analysis of the utility of genetic risk scores in light of the study results will be carried out.