Active clinical trials for "Acute Coronary Syndrome"

The purpose of the study is to to determine the natural history of positive psychological states, health status, and functioning, over an 8 week period following admission for an acute coronary syndrome (ACS). We aim to compare the changes in these factors from baseline to 8-week follow-up with corresponding changes in the completed proof-of-concept intervention trial (NCT02004158).

Documentation of long-term data regarding ticagrelor use and evaluation of reasons for discontinuation of ticagrelor in patients with ACS

ACS are a potent risk factor for AF, with new onset AF occurring in up to 1 in every 5 patients hospitalized with an ACS. Despite its relatively frequent occurrence and the many etiologic factors involved in its pathogenetic condition, the frequency and prognostic significance of AF complicating ACS remain unclear

Coronary Artery Disease (CAD) is common in Mexico, while morbidity and mortality is high. Drug therapy can relieve angina pain and stabilize plaque, but it is not able to re-flow a coronary artery. Balloon angioplasty and/or stent placement, re-establishes coronary blood flow; however, the risk of re-stenosis and/or development of new coronary events remains latent. Endothelial damage, reflected by the degree of endothelial dysfunction, inflammation and oxidative stress, promotes atherogenesis, which plays a central role in the pathophysiology of CAD. These mechanisms have been studied in animal models; however, it is widely unknown whether it influences the coronary circulation in humans. Therefore the present study explores the impact of an intracoronary profile of biomarkers of endothelial dysfunction, inflammation and oxidative stress on the prognosis of coronary remodeling and new adverse cardiovascular events in patients with chronic stable coronary syndrome undergoing angioplasty and stent placement.

The objective of this study is to analyze the Demographics, Clinical Profiles, Management, in-Hospital and Long-Term Outcomes of Patients with Acute Coronary Syndrome Syndrome And Myocardial Infarction with Non-obstructive Coronary Artery Disease.

Left ventricular dysfunction is common in the critically ill. The aim of this study is to assess the incidence and prognosis of left ventricular dysfunction in critically ill patients.

Hypothesis: High sensitivity cTnI assays will have improved diagnostic accuracy for type 1 MI compared to contemporary cTnI assays. The primary objective of the study is to determine the performance of a high sensitivity cardiac troponin I (hs-cTnI) assay compared to a contemporary cTnI assay for the diagnostic accuracy of type 1 acute myocardial infarction (AMI). The diagnostic performance of Abbott's hs-cTnI assay will be evaluated. Investigators will assess the assay's ability to diagnose AMI earlier and to rule out AMI earlier. The sensitivity, specificity, positive predictive value and negative predictive value of the hs-cTnI assay will be evaluated with both a universal cut off as well as with gender and potentially age derived 99th percentile upper reference limits (URL). Investigators will evaluate delta hs-cTnI values (pre-specified absolute concentration and percent changes over time) for their ability to contribute to the negative predictive value and hence potentially lead to an earlier rule out of AMI (improved specificity). Additionally, investigators will assess delta changes of the hs-cTnI assay for their potential contribution to the clinical differentiation of type 1 and type 2 (supply demand mismatch) MIs. Lastly, investigators will compare the diagnosis of AMI based on the currently used contemporary assay to the hs-assay, to assess both the incidence of AMI as well as for the time to diagnosis.

In chest pain patients with suspected acute coronary syndrome, a 2-hr delta Troponin-I as measured by the i-STAT immunoassay reliably identifies and excludes an acute myocardial infarction. In chest pain patients with suspected acute coronary syndrome whose baseline troponin is above the 99th percentile but less than 0.2ng/ml, a 2hr delta Troponin-I as measured by the i-STAT immunoassay accurately discriminates between acute myocardial infarction and non-acute myocardial infarction troponin elevations.

The main objective of our study is to evaluate the diagnostic value of copeptin testing in association with troponin HS testing during pre-hospital care (ambulance care) in the treatment of patients whose pattern of use is the occurrence chest pain suggestive of ACS but not ST+.

This is an OBSERVATIONAL Specimen procurement and data collections trial for acute coronary syndrome that will be conducted in the Emergency Department at Henry Ford Hospital. The standard protocol for evaluating patients in the Emergency Department for possible acute myocardial infarction includes the measurement of cardiac troponin over 3 hours. Subjects presenting to the ED with chest discomfort or ischemic symptoms will be eligible for blood draw protocol. The study is blinded to treating physicians and does not change current standard of care. After informed consent patients will have blood samples drawn at 0, 30 minutes, 1 hour and 3 hours. Serum from the samples will be stored in a -80 research freezer to be evaluated at a later time as new cardiac markers for acute coronary syndrome are developed.