View clinical trials related to Myocardial Ischemia.
Filter by:• The aim of the VIP study is to investigate the impact of vulnerability markers (inflammatory serum biomarkers for systemic vulnerability, coronary shear stress and vulnerability mapping for pancoronary vulnerability, and imaging-based plaque features for systemic vulnerability) on the rate of major adverse cardiovascular events caused by progression of the non-culprit lesion in patients with acute ST or non-ST segment elevation myocardial infarction who undergo revascularization of the culprit lesion during the acute event. Furthermore, the study will evaluate the rate of progression of non-culprit lesions towards a higher degree of vulnerability, based on coronary computed tomography angiographic assessment at 1 year after enrollment.
CFR has been studied for few years using 82 Rubidium PET (positron emission tomography) /CT. CFR has shown to be correlated with cardiovascular events occurring in the 10 following years. CFR also helps to identify multivessel coronary disease. Few studies have shown the possibility to calculate CFR during myocardial perfusion SPECT on new ultrafast CZT cameras.
The study will estimate the current status of participants with non-obstructive coronary artery disease confirmed via coronary angiography.
The study is to further exploring the optimal switching strategy by evaluating the pharmacodynamic responses as well as adverse events in patients with complexity of coronary artery disease managed by percutaneous coronary intervention (PCI). All participants will be divided into three groups and recieving ticagrelor 90mg plus aspirin 100mg at 12 hours after the last dose of clopidogrel; recieving ticagrelor 90mg plus aspirin 100mg at 24 hours after the last dose of clopidogrel; recieving ticagrelor 180mg plus aspirin 100mg at 24 hours after the last dose of clopidogrel.
Bioresorbable vascular scaffolds (BVS) are considered as a new revolution in coronary intervention due to their potential advantages for long term follow up. However, current generation BVS have also some drawbacks that restrict the use for complex lesions. Using BVS and drug eluting stents (DES) together -implanting DES for BVS inappropriate segments -may be a feasible option to avoid the disadvantages of permanent foreign body and to reduce very late adverse events. In this context, we investigated the clinical outcomes following treatment with hybrid strategy with concomitant use of BVS and DES for complex lesions. A single center retrospective cohort was performed enrolling 40 patients with complex lesions treated with hybrid approach from February 2015 up to April 2017. Lesion segments with a large plaque burden and/or severe calcification, aorto-ostial and bifurcation lesions that may be unfavorable for BVS, treated with DES. BVS and DES were implanted with minimal overlap of DES and BVS struts. The primary end-point was target lesion failure (TLF) which was a composite of cardiac death, target vessel myocardial infarction and target lesion revascularization (TLR). During follow-up, coronary angiography was performed when patients had ischemic symptoms.
To evaluate the effect of evolocumab on fibrous cap thickness (FCT) in participants with non-ST-elevation acute coronary syndrome (NSTE-ACS) who are taking maximally tolerated statin therapy.
This prospective registry is intended to evaluate the safety and efficacy of the XIENCE Sierra stent.
For permanent coronary stents, reduction of thickness of struts have become one of the most important innovation, being related to easier manipulation, reduced risk of stent thrombosis and low rate of revascularization. Consequently the investigators performed a multicenter registry enrolling all consecutive patients treated with very thin stents for ULM or bifurcation.
This prospective, observational study evaluates the accuracy of stress testing with the MyoStrain SENC CMR Imaging System to detect myocardial ischemia and viability in patients with suspected coronary artery disease using low levels of stress.
TruePhysioTM Sensor-equipped Ultrathin Pressure Microcatheter (referred to as TruePhysioTM Microcatheter below) is a novel device for evaluating the functional significance of coronary stenosis. This study will compare the differences, if any, between the coronary fractional flow reserve (FFR) measured by the TruePhysioTM Microcatheter and the Pressure Wire.