View clinical trials related to Myocardial Infarction.
Filter by:Myocardial infarction (MI) is a leading cause of death in developed countries, including Sweden. Standard treatment for patients after MI includes exercise-based cardiac rehabilitation which contributes to improved cardiovascular function and reduces the risk of hospital readmissions, new cardiovascular events and mortality. Thermotherapy may also have beneficial effects on cardiovascular disease by a reduction in inflammatory status and improved metabolism and vascular function. Given the well-documented effects of exercise training on cardiac rehabilitation and recent evidence that thermotherapy may improve cardiovascular function, we wish to investigate the effect of exercise combined with hot water immersion (HWI) in cardiac rehabilitation post-MI. This is a single-centre, randomized controlled clinical trial in patients with recent MI. Our aim is to investigate whether exercise training combined with HWI improves inflammatory and metabolic status, cardiovascular function as well as psychological well-being, compared with exercise training alone. Patients will be randomized 1:1 to an 8 week intervention with exercise training 2 times per week followed by 15 minutes of hot water immersion, or to a control group with exercise training alone. The primary endpoint is changes in the inflammatory marker interleukin (IL-) 6 between groups at 8 weeks. Secondary endpoints include other biomarkers of inflammation, metabolism, effects on cardiovascular function and psychological benefits. Secondary prevention after MI has improved during the last decades but readmissions and death following acute MI remain large health challenges. If HWI in addition to standard cardiac rehabilitation can lower inflammation more than standard therapy alone, and improve metabolic, cardiovascular and psychological status, it could be a cost-effective and safe complementary strategy for secondary prevention after MI, particularly for those with limited exercise capability.
This study will test the hypothesis intracoronary administration of OmniMSC-AMI (allogenic bone marrow-derived mesenchymal stem cells) just after finishing the primary percutaneous coronary intervention (PCI) in ST-segment elevation myocardial infarction (STEMI) patients without cardiogenic shock is safe and may provide benefit on improving left ventricular ejection fraction (LVEF) during clinical follow-up.
Cardiovascular disease (CVD) represents the leading cause of death worldwide. While medications, such as statins, significantly reduce atherosclerotic CVD (ASCVD) risk by lowering low density lipoprotein levels, they may also have pleiotropic effects on inflammation. The immunomodulatory effects of these medications are relevant to ASCVD risk reduction given that inflammation plays a central role in atherosclerotic plaque formation (atherogenesis) and influences the development of vulnerable plaque morphology. Patients on statins, however, may have residual inflammation contributing to incident ASCVD despite the potent LDL-lowering effects of statins. While new therapies, such as proprotein convertase subtilisin/kexin type 9 (PSCK9) inhibitors, further reduce incident ASCVD and drastically reduce LDL-C below that achieved by statin therapy alone, PCSK9 inhibitors may also have pleiotropic effects on inflammation. Thus, PCSK9 inhibitors may help reduce arterial inflammation to a level closer to that of patients without ASCVD. This study will apply a novel targeted molecular imaging approach, technetium 99m (99mTc)-tilmanocept SPECT/CT, to determine if residual macrophage-specific arterial inflammation is present with statin therapy and the immunomodulatory effects of PSCK9 inhibition. Given the continued high mortality and morbidity attributable to ASCVD, strong imperatives exist to better understand the immunomodulatory effects of lipid lowering therapies and residual inflammatory risk. This understanding, in turn, will inform the development of new ASCVD preventative and treatment strategies as well as elucidate other indications for established therapies.
To investigate the risk factors involved in the occurrence and prognosis of the patients with acute coronary syndrome, patients undergoing percutaneous coronary intervention will be recruited and followed up for at least 2 years.
This study will compare the effect of HFNC versus standard oxygen administration after elective esophagectomy for cancer.
Magnetocardiography (MCG) is a non-invasive and accurate method of detecting myocardial ischemia. However, the previous MCG is limited in clinical practice due to its high working conditions and limited sensitivity. The next-generation MCG based on optical pumped magnetometer (OPM) has the advantages of high sensitivity, high reliability, high usability and low cost, which makes it suitable for most medical scenarios. Thus, this prospective single-center study aimed to use OPM MCG to explore its diagnostic efficacy and predictive value for myocardial ischemia. Participants who will receive coronary angiography examinations will be enrolled in this study. Participants enrolled in the study will also have a 1, 3, 6, 12, 24, 36, and 48-month follow-up for analysis of adverse cardiac events.
Coronary vasomotor disorders, occurring both at microvascular and epicardial level, have been demonstrated as responsible for myocardial ischemia in a sizeable group of patients undergoing coronary angiography (CAG), with clinical manifestations ranging from ischemia with non-obstructive coronary arteries (INOCA) to myocardial infarction with non-obstructive coronary arteries (MINOCA), along with life-threatening arrhythmias and sudden cardiac death. Intracoronary provocative testing with administration of acetylcholine (ACh) at the time of CAG may elicit epicardial coronary spasm or microvascular spasm in susceptible individuals, and therefore is assuming paramount importance for the diagnosis of functional coronary alterations in patients with suspected myocardial ischemia and non-obstructive coronary artery disease (CAD). However, previous studies mainly focused on patients with INOCA, whilst MINOCA patients were often underrepresented. Assessing the presence of coronary vasomotor disorders is of mainstay importance in order to implement the optimal management and improve clinical outcomes. Clinical predictors for a positive ACh test could allow the development of predictive models for a positive or negative response based on clinical and/or angiographic features readily available in the catheterization laboratories, thus helping clinicians in the diagnosis of coronary vasomotor disorders even in patients at high risk of complications.
The aim of this study is to evaluate the safety of prasugrel monotherapy without aspirin versus 12-month dual antiplatelet therapy (DAPT) in patients with STEMI using platinum-chrome everolimus-eluting stent (PtCr-EES: SYNERGYTM).
Reducing NOX-2, MMP-9, and TGF-β1 Expression in Preventing Ventricular Remodelling Post Acute ST-Segment Elevation Myocardial Infarction using Colchicine (Post Late Reperfusion Percutaneous Coronary Intervention and Non-Reperfusion and In Vitro Study on Ischemic Rat Cardiomyocyte Culture Model). Coronary heart disease (CHD) is the most common cause of mortality and disability worldwide. The handling of reperfusion in Indonesia is still far below the required standard. Most STEMI patients in Indonesia arrive late to a health facility with symptoms that have been present for more than 12 hours (late-onset). Heart failure following a myocardial infarction is one of the long-term complications of STEMI. Patients with STEMU who do not receive reperfusion were more likely to develop this consequence. According to several studies, microtubules in cardiomyocytes have been identified as an essential regulator of cardiomyocytes' ability to respond to shear stress, which offers compression resistance and facilitates mitochondrial energy production. Microtubule densification, which occurs due to remodelling in heart failure, disrupts the microtubule network. The role of reactive oxygen species (ROS) produced by ischemic myocardium in this remodelling is thus inextricably linked. NADPH oxidase is one of the enzymes involved (NOX). NOX-2 levels have been reported to be higher in myocardial infarction and cardiac remodelling, and it has a close interaction with microtubule network, with damage of microtubule tissue increasing NOX-2 generation of reactive oxygen species. By eroding the ECM and triggering cytokines and chemokines to recruit inflammatory cells to eliminate necrotic cardiomyocytes, matrix metalloproteinase 9 (MMP-9) aids tissue rebuilding. Induction and activation of endogenous TGF-signaling pathways after myocardial infarction have also been discovered to play a function. TGF-β may play a role in the resolution of the inflammatory response in the early stages of infarct repair by inactivating macrophages and decreasing endothelial cell chemokine and cytokine production. TGF-β stimulates the fibrogenic pathway by causing extracellular matrix deposition and fibrosis later. Colchicine is a commonly prescribed anti-inflammatory medication with a low cost. the mechanism of colchicine is tubulin binding, which prevents microtubule assembly and polymerization. Colchicine inhibits microtubule development at low concentrations and promotes microtubule depolymerization at higher concentrations. Several studies have demonstrated that low-dose colchicine can help reduce severe cardiac outcomes such as cardiovascular mortality, stroke, and cardiac arrest following myocardial infarction. Colchicine is known to cause partial restoration of microtubule tissue in the perinuclear region. Colchicine has also been shown in earlier research to reduce the expression of MMP-9, NOX2, and TGF-β This study aims to evaluate whether colchicine could prevent ventricular remodelling in STEMI patients with delayed reperfusion and non reperfusion. The minor hypothesis of this study was colchicine can lower NOX-2, MMP-9, and TGF-β expression in the clinical situation of patients with delayed and non-reperfusion STEMI following PCI. Randomization with 1:1 allocation were used to classify the patients, each group include 41 patients with one group receiving colchicine therapy and standard therapy and the other receiving standard therapy only. Colchicine administration was the independent variable. STEMI patients with delayed and non-reperfusion IKP who met the inclusion criteria are included in this randomized clinical trial. Left ventricular end-diastolic volume (LVEDV) was the dependent variable while serum MMP-9, NOX-2, and TGF-β were the intermediate variables. In the treatment group, colchicine 1 mg is administered before PCI or admission to the ICCU, and colchicine is continued at 0.5 mg/day for a month. Within 24 to 36 hours of treatment initiation, the patient had echocardiography, NOX-2, MMP-9, and TGF-β levels evaluated. On days 4-5, a second NOX-2, MMP-9, and TGF-β screening were performed. The follow up two months after treatment initiation includes an assessment of drug compliance, symptoms, and echocardiography. Depending on the normality of the data distribution, the difference between groups is performed using the unpaired T-test or the Mann-Whitney test. The significant difference between the treatment groups is indicated by a p-value of 0.05.
The current ST-segment elevation (STEMI)/non-STEMI treatment paradigm misses nearly one fourth of acute coronary occlusions (ACO) that needs immediately reperfusion. Many of these cases can be recognized by subtle changes on ECG, but the current STEMI criteria do not include them. The investigators of this research believe a new occlusive/non-occlusive myocardial infarction (OMI/NOMI) approach will be superior to the established STEMI/non-STEMI paradigm in early detection of ACO, limiting infarct size, reducing re-hospitalizations and most important of all, reducing mortality.