Active clinical trials for "Myocardial Infarction"

Acute myocardial infarction (AMI) is myocardial necrosis caused by acute and continuous ischemia and hypoxia of coronary artery. It can be complicated with arrhythmia, shock or heart failure, which is often life-threatening. The disease is the most common in Europe and the United States, where about 1.5 million people suffer from myocardial infarction every year. China has shown an obvious upward trend in recent years, with at least 500000 new cases every year and at least 2 million current cases . At present, China has a high incidence rate of heart failure after myocardial infarction. The incidence of heart failure within 7 days after myocardial infarction is 19.3%, and the incidence of heart failure from 30 days to 6.7 years after myocardial infarction is 13.1%~37.5%. The incidence of heart failure after myocardial infarction significantly increases the risk of short-term and long-term death, and the prognosis is poor. At present, there is a lack of unified guidance and norms for the diagnosis, treatment and prevention and control strategies of heart failure after myocardial infarction. Cardiac remodeling is the basic pathological process of heart failure after myocardial infarction, and it is also one of the main factors affecting the prognosis of patients. Studies have shown that 30% of AMI have ventricular remodeling 6 months after percutaneous coronary intervention (PCI), and the risk of ventricular remodeling in anterior wall myocardial infarction is the highest. According to foreign literature data, the probability of ventricular remodeling after anterior wall acute myocardial infarction is about 13%, which is 1.9 times higher than that in other parts.Opening the infarct related coronary artery early can save the dying myocardium, reduce the infarct myocardial area and reduce the loss of cardiomyocytes.

New-generation metallic drug-eluting stents represent the standard of care among patients undergoing percutaneous coronary intervention (PCI). Currently, few data are available as regards to the safety and efficacy of the Cre8 amphilimus-eluting stent (Cre8 AES, Alvimedica, Instanbul, Turkey) in comparison with the biodegradable polymer everolimus-eluting stent (Synergy EES, Boston Scientific, Marlborough, MA, USA). Results from randomized trials and meta-analyses consistently indicate that prolonged dual antiplatelet therapy (DAPT) after PCI reduces ischemic events, but invariably conveys an excess of clinically relevant bleeding, which is proportional to the duration of treatment. It has been estimated, indeed, that for every non-fatal ischemic event avoided with prolonged DAPT, two or more clinically relevant bleeding events have to be expected. Given the trade-off between benefits and risks and the lack of mortality benefit in favor of prolonged DAPT, expert consensus suggests that DAPT duration should be individualized based on ischemic versus bleeding risks. At this regard, the DAPT score has been recently proposed as standardized tool to identify patients who derive benefit or lack from a prolonged course of DAPT. However, a prospective assessment of the DAPT score is lacking and whether a personalized duration of DAPT based on the DAPT score improves the net clinical benefit remains unknown. The objective of the study is to compared the safety and the efficacy of the Cre8 AES with the Synergy EES and a personalized DAPT duration based on the DAPT score with a standard DAPT duration among patients undergoing PCI.

The benefits of cardiac rehabilitation are well known. However, despite center based cardiac rehabilitation (CBCR) representing guideline-based care for patients with cardiovascular disease, most patients do not complete the maximum number of sessions allowed by third party insurance payers. As such, many patients may not be receiving the full clinical benefit ascribed to CR. This study will assess the efficacy of an innovative approach to CR delivery on attendance by combining both center-based and remote- or home-based CR sessions. The intervention group combines center-based CR and remote-/home-based CR and is tailored to the individual needs of each patient, accomplished with the assistance of an easy-to-access telecommunications methodology (telemedicine)

Although current guidelines recommend fractional flow reserve (FFR) to identify haemodynamically relevant coronary lesion(s) in stable patients when evidence of ischaemia is not available (Class I, Level of Evidence: A), no published study has assessed the usefulness of FFR to guide percutaneous coronary intervention (PCI) in ST-elevation myocardial infarction (STEMI) patients with multi-vessel disease (MVD). The main objective of this study is to determine whether, in STEMI patients with MVD amenable to PCI, the use of FFR in addition to angiography will improve cardiovascular outcomes, compared with the current practice of angiography- guided PCI, by improving the appropriateness of revascularisations by assessing the relevance of non-culprit lesions in the context of STEMI with multivessel coronary artery disease. The secondary objective is to assess the safety and the cost-effectiveness of the FFR-guided strategy compared to the angiography-guided strategy.

ABYSS is a national, multicenter, randomised, open label trial using the PROBE study design, that will evaluate the non-inferiority of the interruption of ΒB therapy after an uncomplicated MI after six months or more of follow-up compared to the continuation of βB evaluated by the primary endpoint or death, MI, Stroke and rehospitalization for others cardiovascular reasons.

Background: The best strategy for ST-elevation myocardial infarction (STEMI) patients with multi-vessel disease, who undergo primary percutaneous coronary intervention (PCI) of the infarct-related artery (IRA) in the acute phase with remaining multivessel disease, is still not well established. Current guidelines recommend PCI of only the infarct related artery (IRA). However, recent small scale randomised controlled trials indicate that full revascularization of these non-infarct related arteries during the index procedure is superior to initial conservative treatment. Fractional flow reserve (FFR), a method used to determine ischemia-inducing lesions, has been shown to be superior to angiography-guided PCI in stable angina. Objective and methods: To test the hypothesis that a strategy of systematic complete revascularization with FFR-guided PCI following STEMI/very high risk NSTEMI leads to improved clinical outcomes at one year compared to initial conservative management of non-culprit lesions. The trial is a prospective international multicentre registry-based randomized controlled trial with combined primary endpoint of all-cause mortality and non-fatal MI at one year. Key secondary endpoint is unplanned revascularization. 1545 patients with acute STEMI/very high risk NSTEMI with multi-vessel disease in Sweden, Denmark, Serbia, Finland, Latvia, Australia and New Zealand will be randomized into 2 arms: FFR-guided PCI of non-culprit lesions during index hospital admission or Initial conservative management following acute PCI of the culprit lesion(s) or Randomization and data collection in the registries - the Swedish Coronary Angiography and Angioplasty Registry (SCAAR) and corresponding registries in other countries (or electronic data capture) - will ensure low bias, high inclusion rate and excellent follow-up of events at a low cost. Adjudication of clinical events and collection of data from other registries including death cause registries is also planned. Significance: If this study shows that FFR-guided PCI of non-culprit lesions in STEMI/very high risk NSTEMI improves clinical outcome compared to conventional management this will change practise in how we should best manage these patients. Therefore a study of this size will definitely be of great importance in determining future guidelines for this large patient group to reduce both morbidity and mortality.

The CLEAR SYNERGY trial will study the long term effects of treatments following PCI to treat myocardial infarction. These treatments address both the culprit artery (PCI with SYNERGY stent) as well as the non-culprit arteries (randomization to routine colchicine and spironolactone).

A multicentric controlled phase I / IIb study evaluating the safety and the efficacy of in vitro expanded peripheral blood CD34+ stem cells output by the StemXpand® Automated Process, and injected in patients with an acute myocardial infarction and a LVEF remaining below 50% versus standard of care.

In patients ≥ 60yrs with acute ST-elevation myocardial infarction randomised within 3 hours of onset of symptoms the efficacy and safety of a strategy of early fibrinolytic treatment with half-dose tenecteplase and additional antiplatelet therapy with a loading dose of 300 mg clopidogrel, aspirin and coupled with antithrombin therapy followed by catheterisation within 6-24 hours or rescue coronary intervention as required, will be compared to a strategy of primary PCI with a P2Y12 antagonist and antithrombin treatment according to local standards.

The aim of this study is to demonstrate that a combined troponin and copeptin assay can exclude non-ST+ ACS in patients with chest pain less than 6 hours old.