View clinical trials related to Myocardial Infarction.
Filter by:Patients with acute ST-segment elevation myocardial infarction and thrombolysis indications, will be given the recombinant human prourokinase for thrombolysis treatment, and in accordance with the guidelines, will be treated with coronary angiography examination 3 to 24 hours after thrombolysis. The study will explore the best time for interventional therapy combined with thrombolysis.
This is a 2x2 study examining the impacts of a novel exercise regimen and daily text message reminders in patients at high risk for cardiovascular disease. Patients participating in cardiac rehabilitation will be randomized to either moderate intensity continuous training (MICT) or a novel exercise regimen consisting of three periods of high intensity exercise, called BURST exercise. Additionally, half of the patients in each exercise group will be randomized to receive daily text message reminders to improve adherence to the prescribed exercise regimen.
To provide insight into why vitamin D levels at baseline predict an adverse outcome including hospitalisation, we will establish whether baseline vitamin D levels are an independent marker of LV remodelling in patients experiencing an ST segment elevation myocardial infarction.
The purpose of the study is to investigate the clinical outcomes, safety and cost-effectiveness of intravascular OCT imaging in patients with acute myocardial infarction undergoing percutaneous coronary intervention (PCI). About 4500 patients with acute myocardial infarction (estimated 1500 with OCT guidance and 3000 without OCT guidance during PCI）will be prospectively enrolled in 20 sites in China. The total duration of the study is expected to be 5 years, 2 years for enrolment and 3 years for follow up.
ST-elevation myocardial infarction (STEMI) has a serious health threaten to population. PCI, which can timely restore the blood flow to the ischemic myocardium, is a well-proved measure in STEMI management. However, the process of the restoration can induce injury. The phenomenon is defined as ischemia/reperfusion (I/R) injury. The studies indicate that I/R injury accounts for up to 50% of the final myocardial infarct size. However, previous attempts to target known mediators of myocardial I/R injury in patients have been disappointing, leading to calls for a reevaluation of factors affecting myocardial I/R injury [1]. Arginine vasopressin (AVP), that response to acute illness, is unstable and cleared rapidly from the circulation. However, copeptin, the C-terminal portion of provasopressin, is released in equimolar amounts to AVP and is easy to determine. So, copeptin can be a surrogate marker for AVP secretion. Recently, copeptin was found to serve as a potential prognostic biomarker in heart failure and acute myocardial infarction (AMI). AMI can activate the AVP axis, which have a causative role in the evolution of heart failure. Increasing copeptin was shown to correlate with myocardial remodeling, mortality and morbidity. In patients with STEMI, myocardial infarct size is a stronger outcome predictor than LV function, and is related to LV remodeling, which often indicates a significant worse prognosis after AMI. As the gold standard for characterisation of cardiac structure and function, cardiac magnetic resonance (CMR) parameters can serve as surrogate end points in clinical trials of STEMI. We hypothesised that plasma copeptin values, tested before and after PCI, are related to myocardial infarct size, myocardial function both and outcomes at baseline and 6 months follow-up as assessed by CMR in patients with STEMI.
To evaluate the influence of Salvianolate injection on myocardial microcirculation perfusion in subjects with STEMI who underwent primary PCI
This prospective observational cohort study, will investigate the platelet phenotype, platelet genetic composition, and role of platelets as effector cells in women and men with myocardial infarction (MINOCA or MI-CAD) and controls. This study, which will take place at NYU and Bellevue Medical Center, and participating external sites. May have concurrent enrollment with the HARP Main Imaging (NCT02914483). Additionally, a sex, group of age and race matched disease controls 'CATH-NOCA' composed of women and men with stable angina referred for cardiac catheterization, will be enrolled. Blood obtained during the initial catheterization and 2 months post-MI will be utilized for platelet testing.
The program is to improve STEMI medical care quality in China. With the documents issued by National Health and Family Planning Commission of the People's Republic of China, the program was initialed in at least 200 primary PCI capable hospitals together with hundreds of adjacent non-primary PCI capable hospitals in 15 provinces. STEMI patients with symptom onset within 30 days will be enrolled in 3 periods. In each period with 6-month interval, 30 patients will be enrolled consecutively from each PCI-capable center initially and from non-primary PCI capable hospitals later, thus at least 18,000 STEMI patients from primary PCI capable hospitals will be enrolled and all of them will be followed up for 1 year. Key performance indicators (KPIs) in STEMI care will be collected using both national PCI online registry and a program STEMI online registry database for the purpose of improvement of medical care. Hospital KPIs rank report and problem-based resolution will be feedback to each hospital after data analysis in each period. Comparison of every two cross-sectional data (self) and within one cross-sectional (inter-hospital) data will be used to evaluate the improvement of medical quality.
Reliability of 3D angio QFR functional evaluation of all non culprit lesions >50% in STEMI patients during first acute procedure
Patients with myocardial infarction related potential malignant ventricular arrhythmia have high risk of sudden death. The aim of this clinical trial is evaluating therapeutic efficacy of unipolar or bipolar radiofrequency ablation in Coronary Artery Bypass Grafts (CABG) Surgery, which can reduce myocardial ischemia and block reentry circuits of ventricular arrhythmia at the same time. The observation indexes include the morbidity of potential malignant ventricular arrhythmia and major adverse cardiovascular events in mid-long-term after CABG surgery.