View clinical trials related to Acute Coronary Syndrome.
Filter by:The UNICORN consists of two collaborating biobanks, one in Utrecht and one in Singapore. From these two sites we include all patients who undergo a coronary catheterization for any reason. At the moment of catheterization we draw blood, which will be stored in a biobank and we collect clinical characteristics. Patients are followed-up for 5 years for the occurrence of major cardiovascular events. By including from two sites in the world we include 4 major ethnic groups: Caucasians, Chinese, Indians and Malays. We aim at including at least 2000 patients per ethnic group. Our hypothesis is that there are differences in the risk factor burden, clinical presentation of CAD, and biochemical patterns in the blood among the ethnic groups. Furthermore, this biobank offers a platform for multi-ethnic biomarker discovery.
Background: Coronary heart disease is the most common cause of death in industrialized countries. Revascularisation by percutaneous coronary angioplasty or thrombolysis is the main principle for treatment of the acute coronary syndrome. To inhibit platelet activity patients are routinely given acetylsalicylic acid (ASA) and clopidogrel, a second-generation thienopyridine. Recently, ticagrelor, a novel cyclopentyl-triazolo-pyrimidine with several pharmacological advantages, has demonstrated greater efficacy but a higher bleeding risk than clopidogrel. Coronary thrombus formation is a complex process and the antithrombotic mechanisms of platelet function inhibitors are incompletely understood. Studies in venous blood or in vitro do not truly reflect the in vivo circumstances as they often do not take into account flow conditions or the interaction between endothelium, blood cells and coagulation factors. Results from animal models may not be relevant for the prothrombotic mechanisms in humans. We have developed a technique that allows investigating hemostatic system activation directly at the site of thrombus formation in vivo in humans. Aim: to compare the inhibitory effects of clopidogrel and ticagrelor (with and without concomitant ASA) on hemostatic system activation under circumstances close to the in vivo situation. Design, patients and interventions: prospective, randomized, double-blind, placebo controlled parallel-group study with a 2x2 factorial design including 112 healthy volunteers who will be randomised to 4 treatment arms: ticagrelor or clopidogrel + placebo, ticagrelor or clopidogrel + ASA. Outcome variables: Indicators of platelet and coagulation activation [ß-thromboglobulin and thromboxane B2 as well as prothrombin fragment F1+2 and D-Dimer, respectively] will be measured before and at several time points during a 8 day period in venous blood and in blood emerging from a standardized injury of the microvasculature to determine bleeding time (shed blood). Statistical considerations: Sample size calculation is based on the percent change in the main outcome variable "β-TG in shed blood" from baseline to 2 hours after treatment start. Statistical analysis is based on the full analysis set, including all randomized subjects who received at least the starting dose of the study medication and for whom blood collections at baseline and at 2 hours after treatment start have been performed.
Background: The optimal duration of dual antiplatelet therapy in ACS patients treated with DES is still under debate. This is especially true for STEMI patients in the era of new anticoagulants and antiplatelet agents. Yet, the potential benefits of longterm dual antiplatelet therapy in avoiding thrombotic complications may be clearly counterbalanced by a higher risk of major bleeding complications. In particular, the COMBO dual therapy stent, being associated with early re-endothelization, may allow for a reduction of the duration of DAPT (dual anti plateled therapy) without increasing the thrombotic risk, while reducing the risk of severe bleeding complications. Study Objective: Aim of the current study is to demonstrate a non-inferiority of a strategy of short-term DAPT (90 days) as compared to standard 360 days DAPT in ACS patients treated with Combo stent. Study Design: This study is a prospective, multicenter, randomized, investigator-initiated study designed to enroll 1500 patients with ACS receiving a COMBO dual-therapy stent who will be randomized 1:1 to either short term (90 days) or to standard (360 days) DAPT. Patients will be randomized within hospitalization (before discharge in case additional revascularization is deemed necessary and performed during hospitalization). Clinical visit is scheduled at 90, and 360 days, whereas a telephone contact will be performed at 180 and 720 days. Patient Population: The study population will consist of up to 1500 ACS patients (male and female) older than 18 years amenable to percutaneous treatment and treated with a COMBO stent. Subjects must meet all of the eligibility criteria and provide written informed consent.
This prospective study aimed to validate a new prognostic approach of endothelial progenitor cells associated biomarkers in patients with acute coronary syndromes . Recruitment is made prospectively by two centers of Inter -region South Mediterranean,
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+.
The main objective of the SENIOR study is to establish the efficacy and safety of the everolimus eluting stent with a biodegradable abluminal polymer (SYNERGY II) associated with a short dual antiplatelet therapy (DAPT) in patients ≥75 years old, suffering from stable angina, silent ischemia (1 month DAPT) or acute coronary syndromes (6 months DAPT) related to significant coronary artery disease and requiring percutaneous coronary intervention. The primary end point is to demonstrate that SYNERGY II in patients ≥75 years old is associated with a lower rate of the composite rate of major cardiovascular and cerebrovascular events (all-cause death, myocardial infarction, stroke, ischemia-driven target lesion revascularization) and a similar risk of stent thrombosis than bare metal stent at one year.
The purpose of this study is to determine whether continuous clopidogrel dose adjustment targeted after platelet function testing improves outcomes during 12 months of follow-up in acute coronary syndrome patients treated with coronary artery stenting and with determined high platelet reactivity on clopidogrel.
The purpose of this study is to assess safety and efficacy of Ticagrelor versus Clopidogrel in Asian/KOREAn patients with acute coronary syndromes intended for invasive management.
This purpose of this study is to assess the effects of BMS-919373 on the single dose Pharmacokinetics (PK) of Rosuvastatin and Atorvastatin in healthy subjects.
For octogenarian patients with NSTEMI (non-ST segment elevation myocardial infarction) an invasive-guided strategy will prove superior to a conservative strategy with respect to a combined endpoint of all cause mortality and non-fatal myocardial infarction.