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Myocardial Ischemia clinical trials

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NCT ID: NCT03774394 Not yet recruiting - Clinical trials for Coronary Artery Disease (CAD)

Impact of Chronic Kidney Disease on Clopidogrel Effects in Diabetes Mellitus

Start date: January 2019
Phase: Phase 4
Study type: Interventional

Patients with diabetes mellitus (DM) and chronic kidney disease (CKD) are at increased risk of atherothrombotic events. Clopidogrel is the most widely used platelet P2Y12 receptor inhibitor in patients with coronary artery disease (CAD). However, despite its benefits, many patients still experience recurrent atherothrombotic events. The proposed study will test the central hypothesis that in DM patients the presence of CKD reduces clopidogrel-mediated P2Y12 inhibitory effects through synergistic mechanisms, which include upregulation of the P2Y12 signaling pathway and impaired clopidogrel metabolism.

NCT ID: NCT03772613 Not yet recruiting - Clinical trials for Coronary Artery Disease

The Randomized OPTIMAL-ACT Trial

Start date: January 2019
Phase: Phase 2
Study type: Interventional

Despite the widespread adoption of recommended anticoagulation intensity ranges during percutaneous coronary intervention (PCI), there are limited randomized clinical trials testing specific targets for activated clotting times (ACT). The primary research hypothesis is that in the modern cardiac catheterization laboratory, where PCI procedural duration is relatively short, radial access with small caliber equipment is preferable, and where rates of intracoronary stenting and dual antiplatelet therapy use is high, lower ACT targets, as compared with higher ACT targets, will be associated with lower rates of bleeding while having similar rates of ischemic events.

NCT ID: NCT03771053 Recruiting - Clinical trials for Coronary Heart Disease

The Effect of Simvastatin Combined With Ezetimibe in Patients With Stable Angina and Diabetes

Start date: January 1, 2018
Phase: N/A
Study type: Interventional

In this study, simvastatin combined with Ezeimebum was used to enhance lipid reduction, and IVUS was used to evaluate the volume and composition of coronary plaque before and after treatment. The aim is to evaluate the overall intervention effect of Ezeimebum on stable angina pectoris with diabetes mellitus on the basis of statins.

NCT ID: NCT03770650 Not yet recruiting - Clinical trials for Coronary Artery Disease

IVUS-guided DK Crush Stenting Technique for Patients With Complex Bifurcation Lesions

DKCRUSH-VIII
Start date: December 30, 2018
Phase: N/A
Study type: Interventional

This study is designed to investigate whether IVUS-guided DK crush stenting technique compared to angiography-guided DK crush after the indexed procedure will lead to lower rates of the composite endpoint of target vessel failure (TVF) at 12 months. The individual components of TVF include cardiac death, target-vessel myocardial infarction (MI), or target vessel revascularization (TVR). Complex bifurcation lesions were defined according to DEFINITION study.

NCT ID: NCT03770520 Recruiting - Clinical trials for Coronary Artery Disease

Graft Patency of QFR-guided Versus Angio-guided Coronary Artery Bypass Grafting

Start date: February 1, 2017
Phase: N/A
Study type: Interventional

Coronary artery bypass grafting(CABG) is the golden standard for severe coronary artery disease(CAD), the current surgery strategy is mainly based on coronary angiography(CAG), but many trials of PCI have shown that visually stenosis in CAG may not have functional significance. The aim of this study is to investigate if the Quantitative Flow Ratio (QFR) can be adopted in CABG and achieve a better graft patency.

NCT ID: NCT03769623 Not yet recruiting - Clinical trials for Coronary Artery Disease

The Safety and Efficacy of Biolimus in the Treatment of Patients With Small Coronary Artery Disease

Brave
Start date: December 31, 2018
Phase: N/A
Study type: Interventional

The study was a prospective, multicenter, randomized, blind, parallel positive control, and superiority test study, 206 subjects with small coronary artery disease who met the inclusion/exclusion criteria were enrolled, subjects were randomly assigned to the treatment group of Biolimus and Powerline at 1:1. All subjects underwent clinical follow-up at 30 days, 6 months, 9 months, and 12 months after surgery, and angiographic follow-up at 9 months. The primary endpoint was late lumen loss at 9 months.

NCT ID: NCT03767621 Not yet recruiting - Clinical trials for Coronary Artery Disease

Concordance Between FFR and iFR for the Assessment of Intermediate Lesions in the Left Main Coronary Artery. A Prospective Validation of a Default Value for iFR

iLITRO
Start date: January 14, 2019
Phase:
Study type: Observational [Patient Registry]

The assessment of Left Main Coronary Artery (LMCA) lesions by means of coronary angiography renders serious limitations. Studies with a limited number of patients have shown that a value of FFR (Fractional Flow Reserve) above 0.80 identify a low risk of events in case of not performing revascularization in patients with intermediate stenosis in the LMCA. Although iFR (Instant wave Free Ratio) has recently been found equivalent to FFR The demonstration of the prognostic utility of iFR in patients with LMCA intermediate lesions could have an important clinical impact and justify its systematic use for the treatment decision in these high-risk patients.

NCT ID: NCT03766529 Recruiting - Clinical trials for Ischaemic Heart Diseases

Loop Isolation-based Uploading Pre-conditioning

Start date: January 2016
Phase:
Study type: Observational

Myocardial protection is of crucial importance for surgical coronary revascularization in patients with ischaemic heart diseases. The investigators proposed loop isolation-based uploading preconditioning to protect heart from ischemic-reperfusion damage (LiuPhD) as a novel cardioprotective strategy, and applied to patients who underwent on-pump coronary artery bypass grafting (CABG).

NCT ID: NCT03763747 Not yet recruiting - Clinical trials for Coronary Artery Disease

Scoreflex NC - Scoring PTCA Catheter

Start date: January 30, 2019
Phase: N/A
Study type: Interventional

A prospective, open label, multi-center, single arm, observational study designed to evaluate the acute safety and device procedural success of the Scoreflex NC Scoring PTCA catheters in subjects with stenotic coronary arteries during percutaneous coronary intervention. Two-hundred (200) subjects will be treated at up to 15 U.S. sites with the Scoreflex NC Scoring PTCA catheter during their index procedure. All subjects will be screened according to the protocol inclusion and exclusion criteria and will be followed through hospital discharge.

NCT ID: NCT03762096 Recruiting - Clinical trials for Coronary Artery Disease

Short Interval Resveratrol Trial in Cardiovascular Surgery

SIRT-CVS
Start date: March 6, 2018
Phase: N/A
Study type: Interventional

Major Problem People with diabetes have an increased risk of heart disease, heart failure, and death from a cardiovascular cause. Diabetes prevents efficient metabolism of fuel, causes inflammation and vascular disease that blocks normal blood flow, and inhibits the function of the heart after injury. These changes make diabetics more susceptible to heart attacks and heart failure. Resveratrol is found in grapes and red wine and has been shown to have beneficial effects in diabetic patients. In previous studies the investigators have shown that resveratrol can improve heart metabolism and function in pigs with diabetes and chronic lack of blood flow to the heart. Questions The investigators believe resveratrol will help reverse the negative effects of diabetes on the heart. The questions are: 1.How does the molecular machinery in the hearts of patients with diabetes differ from patients without diabetes? 2.Will resveratrol have an effect on heart metabolism, intracellular signaling, inflammation and blood vessel function? 3.Will resveratrol improve the number and function of cardiac stem cells, cells involved in heart repair? The investigators have been safely collecting tissue from the hearts of patients undergoing heart surgery. Preliminary studies show the investigators can isolate and study cells. The investigators have collected and assessed the function of endothelial cells, a measure of vascular health and can measure the level of endothelial injury and have studied the make-up of caveolae, structures on the cell membrane that are important for cell signaling and are negatively impacted by diabetes. This study is a unique collaboration among cardiologists, cardiac surgeons, and basic scientists.