View clinical trials related to Coronary Artery Disease.
Filter by:This trial evaluates the effects of Empagliflozin versus Sitagliptin, in addition to standard of care, on global myocardial perfusion reserve using dynamic single-photon emission computed tomography (SPECT) images.
This investigation will be conducted in patients 18-75 years of age with multiple coronary artery disease risk factors (antiplatelet naïve patients) and patients with prior MI or PVD on antiplatelet therapy. Pharmacodynamics will be assessed at multiple time points to assess onset-, maintenance-, and offset-effect of vorapaxar on thrombin generation, platelet reactivity, and plasma/platelet endothelial and inflammatory biomarkers. Safety assessment will be assessed throughout the study.
Background Troponin are proteins found in the cardiomyocyte and are a cornerstone in the diagnoses of acute myocardial infarction. Troponin is released to the bloodstream as a result of an cardiomyocyte injury. Troponin is frequently assessed in hospital care for patients with chest pain and dyspnea. Guidelines recommend troponin assessment at admission and repeated at 3 to 6 hours, depending on the assay. High-sensitivity assays measure concentrations that are ten-times lower than earlier generations of assays. However, the time from when troponin is elevated in the bloodstream after an ischemic injury, measured with high-sensitivity assays, are not fully known. During an X-ray imaging of the heart's blood vessels (coronary angiogram) it is possible to do a short, controlled occlusion of coronary artery by inflating a small balloon in one of the coronary arteries. Numerous earlier studies in patients have used this method for induced occlusion of one coronary artery for 1 to 3 minutes. Only one of the studies measured troponin I. The aim with this study is to quantify and compare the release of troponin T and troponin I in the early hours after a controlled induced ischemia. Study Design This is a prospective, descriptive and experimental study. There will be included 40 patients, without acute ischemic cardiac disease. They will be randomized in 4 groups. 0: 10 patients - control group, no balloon occlusion 1. 10 patients - balloon occlusion for 30 seconds 2. 10 patients - balloon occlusion for 60 seconds 3. 10 patients - balloon occlusion for 90 seconds Subsequently there will be assessed serial blood samples 0 - 3 hours: Every 15 minutes 3 - 6 hours: Every 30 minutes Statistics This is a pilot study and it is estimated that ten patients are sufficient number of patients in each group to assess elevation of troponin after occlusion of coronary artery. The thesis is there is a dosage-response correlation between the length of balloon occlusion and the concentration of troponin in blood stream.
The objective of this study is to determine ventricular loading conditions during and after PulseCath® iVAC2L support, and assess its impact on specific load dependent humoral factors and cardiac enzymes. These specific patterns are so far unknown and will be evaluated invasively.
The need to restore water losses resulting from physical activity has become established and diffused into international consensus for healthy individuals or high-performance athletes. However, the influence of fluid replacement when administered during and after exercise on cardiorespiratory parameters, cardiac autonomic modulation, and subjective perceptions of effort and pain of individuals with autonomic alterations known as the coronary arteries remain poorly understood. In this sense, this study intends to investigate the influence of hydration on cardiac autonomic modulation, cardiorespiratory parameters, subjective perception of exertion and pain of coronary arteries submitted to aerobic exercise in the model of a cardiovascular rehabilitation session. A total of 31 individuals will be recruited in this study and will perform four standardized cardiovascular rehabilitation sessions. Only in the second and the fourth session will the volunteers be instructed to ingest a quantity of water predetermined by the evaluator, based on the loss of body mass measured in the first and the third sessions. The outcomes (autonomic modulation, cardiorespiratory variables and perceptions) will be evaluated before, during and after exercise. The results of this study will enable professionals working with this population to implement awareness strategies on the importance of fluid intake in cardiovascular rehabilitation programs.
Long-term DAPT is recommended after percutaneous coronary intervention (PCI) in patients with coronary artery disease. However, antiplatelet therapy may have adverse consequences, the most common of which is gastrointestinal mucosal injury with ulceration and bleeding. The extent to which an an abbreviated DAPT strategy reduces gastrointestinal mucosal injury has not been studied, principally due to the lack of sensitive, noninvasive measurements capable of detecting gastrointestinal injury.ANKON® magnetically controlled capsule endoscopy (AMCE) is a non-invasive, active controlled system which affords assessment of the stomach and entire small intestine.The current randomized study will assess gastrointestinal mucosal injury and bleeding via AMCE in patients on three different antiplatelet regimens and establish a gastrointestinal mucosal injury scoring system which may prove useful in guiding optimal antiplatelet agent usage after PCI.
Identifying the critical lesion of coronary artery disease and determining the interventional plan are significant for reducing adverse cardiovascular adverse events. The assessment of critical lesion requires the consideration of plaque morphology, tissue composition, and endometrial stress which leading to rupture. In summary, accurate assessment of critical lesions has high application value. In this study, patients with critical coronary artery disease were divided into two groups: an accurate assessment group and a simple assessment group, with the aim to compare the diagnosis and treatment efficiency as well as prognosis, potential cardiovascular risk, possible "excessive" intervention.
The single center retrospective study evaluates the acute and long term outcomes of bioabsorbable drug-eluting scaffolds (BVS) implantation in 50 consecutive coronary artery disease (CAD) patients using optical coherence tomography (OCT) imaging.
This study aim to evaluate whether intensive lipid lowering therapy may improve the clinical outcomes in coronary artery disease patients with in-stent neoatherosclerosis, in comparison with standard therapy.
Quantitative Flow Ratio (QFR) is a novel method for evaluating the functional significance of coronary stenosis. The purpose of the FAVOR II China study is to evaluate the diagnostic accuracy of on-line QFR with FFR as the reference standard. The secondary purpose is to compare the diagnostic accuracies between online QFR and online QCA, with FFR as the reference standard.