View clinical trials related to Coronary Disease.
Filter by:Restenosis due to neointimal hyperplasia causes repeat target vessel revascularization in a relevant number of patients undergoing percutaneous coronary interventions (PCI). Drug-eluting stents (DES) are currently adopted to reduce the rate of restenosis; however, they may increase risk of stent thrombosis. Experimental data and first clinical experiences showed that inhibition of neointimal hyperplasia may be obtained by local administration of anti-proliferative drugs (like paclitaxel) loaded on the surface of angioplasty balloons. Data on the efficacy of novel coronary drug-eluting balloons (DEBs) are lacking. Aims of this open label prospective, randomized trial is to evaluate neointimal hyperplasia in patients undergoing bare-metal stent (BMS) implantation alone compared to those receiving additional DEB use and to assess if the technique of DEB use may affect the degree of neointimal hyperplasia. Neointimal hyperplasia will be assessed by Optical coherence tomography (OCT).
The aim of this study is to evaluate if the intracoronary infusion of autologous bone-marrow derived CD133+ endothelial precursor cells is able to promote neovascularization and to improve myocardial perfusion and contractility in patients with refractory coronary heart disease, characterized by poor response to standard coronary interventions, severe impairment of the quality of life, and poor prognosis.
The "one-stop" hybrid coronary revascularization combines minimally invasive direct coronary artery bypass (MIDCAB) and PCI to be performed in the hybrid operating suite, an enhanced operating room equipped with radiographic capability. This study is to compare 1-year clinical outcomes of "one-stop" hybrid coronary revascularization with percutaneous coronary intervention (PCI) in selected patients with multivessel coronary artery disease.
The "one-stop" hybrid coronary revascularization combines minimally invasive direct coronary artery bypass (MIDCAB) and PCI to be performed in the hybrid operating suite, an enhanced operating room equipped with radiographic capability. This study is to compare 1-year clinical outcomes of "one-stop" hybrid coronary revascularization with off-pump coronary artery bypass (OPCAB) in selected patients with multivessel coronary artery disease.
Vulnerable plaque characterized by thin fibrous cap and large lipid core is an independent risk factor for most of acute cardiac event. Current clinical data showed that thin-cap fibroatheroma was more frequently observed in patients with ACS than SAP. Further OCT study indicated that patients with ACS had significantly higher incidence of incomplete neointimal coverage and malapposition after DES implantation than those with SAP. These findings imply that initial native lesion characteristics may be related to different vessel response (neointimal coverage and malapposition) after stenting. However, there is little data on the relationship between plaque characteristics and vascular response to DES after stent implantation evaluated by OCT. Therefore, this study was designed to investigate the relationship between initial plaque characteristics and stent surface coverage or late malapposition after SES implantation. The investigators will use high resolution OCT to assess the initial culprit plaque morphology and subsequent vascular response after SES stenting at the time points of post-stenting, 6 months and 12 months. IVUS will also be performed to evaluate the tissue protrusion, malapposition, vessel remodeling at the same time points.
Diabetic patients are prone to a diffuse and rapidly progressive form of atherosclerosis. Both clinical and angiographic outcomes following percutaneous coronary intervention (PCI) are poor in patients with DM compared with those without DM. Autopsy study has shown delayed neointimal healing with inadequate endothelialization and persistent stent surface fibrin deposition after DES implantation in DM patients. This might partially contribute to the high risk of late stent thrombosis. YINYI Polymer-Free paclitaxel stent is a domestic new type stent with bare metal base with micro porous surface. However, limited data is available in vivo about the surface coverage after stent implantation in DM patients because of lack of sensitive imaging modalities. Optical coherence tomography (OCT) is an optical analogue of intravascular ultrasound（IVUS）that allows high-resolution tomographic intravascular imaging. Furthermore, several studies have demonstrated the feasibility of OCT to quantitatively evaluate the surface coverage and stent conditions in the follow up after PCI . Therefore, the aim of this study was to analyze the surface coverage and late malapposition after two types of DES implantation in DM patients compared with non-DM patients by using OCT and IVUS
Diabetic patients are prone to a diffuse and rapidly progressive form of atherosclerosis. Both clinical and angiographic outcomes following percutaneous coronary intervention (PCI) are poor in patients with DM compared with those without DM. Autopsy study has shown delayed neointimal healing with inadequate endothelialization and persistent stent surface fibrin deposition after DES implantation in DM patients. This might partially contribute to the high risk of late stent thrombosis. YINYI Polymer-Free paclitaxel stent is a domestic new type stent with bare metal base with micro porous surface. However, limited data is available in vivo about the surface coverage after stent implantation in DM patients because of lack of sensitive imaging modalities. Optical coherence tomography (OCT) is an optical analogue of intravascular ultrasound（IVUS）that allows high-resolution tomographic intravascular imaging. Furthermore, several studies have demonstrated the feasibility of OCT to quantitatively evaluate the surface coverage and stent conditions in the follow up after PCI . Therefore, the aim of this study was to analyze the surface coverage and late malapposition after two types of DES implantation in DM patients compared with non-DM patients by using OCT and IVUS.
Coffee is a worldwide drink, been part of any culture. There are some concerns about effects of coffee on the health. Recently, epidemiological studies have shown benefits of coffee drinking to diabetics and also to prevent diabetes in populations. We aim to understand some effects of coffee and not only caffeine over vascular system, in special coronary artery disease patients, diabetics end normal people.
The purpose of this study is in a phase I/II safety and efficacy study to evaluate the clinical effect of coronary artery bypass graft (CABG) combined pedicled omentum wrapped autologous atrial tissue patch cardiomyoplasty for patients with ischemic cardiomyopathy.
The objective of this study is to evaluate the safety and long-term effectiveness of coronary stenting with the zotarolimus eluting stent (ZES) and to determine clinical device and procedural success during commercial use of ZES. The investigators will compare 2nd generation ZE (Endeavor resolute, active prospective arm) with 1st generation ZES (Endeavor Sprint, retrospective arm).