Active clinical trials for "Myocardial Infarction"

The renin angiotensin system (RAS) plays an important physiological and pathophysiological role in the control of blood pressure and plasma volume. Inhibition of the RAS is useful in the treatment of hypertension, cardiac failure and in some patients with myocardial infarction. Several recent clinical trials with angiotensin converting enzyme inhibitors (ACEI) have shown that they also reduce the incidence of myocardial infarction, but the mechanisms underlying this anti-ischemic effect are poorly understood. ACEI reduce angiotensin II synthesis and prevent bradykinin degradation. Results from ongoing studies in the Cardiology Branch (Protocol 95-H-0099) designed to investigate the link between ACEI and the vascular endothelium indicate that ACEI improve peripheral endothelial function, an effect that is partially mediated by bradykinin. The current protocol is designed to investigate whether the beneficial effects of ACEI on peripheral endothelial function are also due to inhibition of angiotensin II. The recent development of selective angiotensin II type 1 (AT1) receptor antagonists allows us to specifically examine the effects of angiotensin II on vasomotor activity.

Over the last two decades, considerable progress has been made in the management of myocardial infarction, both in the acute phase and in monitoring beyond the hospital phase. However changing practices in the "real world" and their impact on prognosis in the medium and long term patients admitted to the intensive care unit for acute myocardial infarction are relatively little studied exhaustively. The study of clinical, biological and genetic characteristics of patients and their conditions of care, help to identify patients at risk for increased morbidity and mortality after myocardial infarction and could be the basis for the subsequent realization of specific studies on the optimal therapeutic management of the disease according to the different risk profiles.

The purpose of this study is to evaluate whether perioperative use of Shenfu Injection could reduce myocardial injury (enzymatic infarct size and infarct volume according to cardiac magnetic resonance imaging) in patients with STEMI after primary PCI

No consensus exists about which coronary artery should be firstly catheterized in primary percutaneous coronary intervention (PCI). The aim of the present study was to compare door-to-balloon time (D2B) of ECG guided immediate infarct-related artery (IRA) PCI with traditional complete coronary angiography followed by PCI for the treatment of ST segment elevation myocardial infarction (STEMI) patients. Primary endpoint is door to device (D2D) time. Secondary end-points are: puncture to device (P2D) time,first medical contact to device (FMC2D) time,incidence of radial artery spasm and occlusion, contrast amount, fluoroscopy time, cumulative air kerma(CAK) and dose area product(DAP).

The OPTICO-ACS- study program - combining for the first time in vivo characterization of the ACS-causing "culprit lesion" by intracoronary imaging technique with optical coherence tomography (OCT) and molecular analysis of immune-cells derived from the culprit coronary thrombus and biochemical analyses in patients with acute-coronary-syndrome (ACS).

This is a prospective, randomized, active control, single-blind, non-inferiority, multicenter clinical trial. 148 subjects will be registered at up to 10 Spanish sites. Subjects will be followed for 5 years. All eligible patients (STEMI < 12 hours from onset of chest pain) will be randomized to Biotronik MAGMARISTM Sirolimus Eluting Bioresorbable Vascular Scaffold System (M-BRS) or Biotronik ORSIRO Sirolimus Eluting Coronary Stent System Endothelium-independent vasomotor response (NTG injection) will be analyzed at 12 months angiographic follow-up (Primary endpoint). In a subgroup of 40 patients Optical Coherence Tomography will be performed after the procedure and at 12 months follow-up. Angiographic (QCA pre- and post-procedure and at 12 months follow-up), OCT data (at 12 months follow-up) will be analyzed off-line by an independent core lab.

Randomized clinical trial to compare radial artery patency after transradial coronary catheterization using 2 different hemostasis techniques. Patients submitted to diagnostic or therapeutic coronary catheterization will be prospectively enrolled in this single-center trial and will be randomized to radial hemostasis with TerumoBand® or a standardized compressive dressing with gauze and elastic bandage.

To assess strut coverage in patients presenting an acute myocardial infarction and treated either with the SYNERGY stent or the Bioresorbable Vascular Scaffold, through a parallel group design.

This study will evaluate the potential benefit of blocking inflammation during a heart attack using an investigational anti-inflammatory medicine called SP16. The study will enroll 10 patients and all 10 patients will receive a standard dose of SP16.

This study evaluates how aspirin, clopidogrel and ticagrelor work in people with chronic kidney disease (CKD) compared to people with normal kidneys. In the first part of the study, half of CKD participants will be randomly assigned to ticagrelor and aspirin, while the other half will be assigned to clopidogrel and aspirin in a blinded fashion. The treatment duration will be two weeks. After recruiting CKD participants the investigator will recruit controls with normal kidney function that will receive only ticagrelor and aspirin for two weeks.