View clinical trials related to Coronary Artery Stenosis.
Filter by:The purpose of this study was to determine the impact of adjunctive cilostazol on platelet inhibition in carriers and non-carriers of the loss-of-function CYP2C19 allele.
This study will evaluate the effectiveness of CorCTA by comparing the results of the test with another imaging method called Fractional Flow Reserve (FFR), which is done as a part of the cardiac catheterization.
The stress response as induced by myocardial cellular damage during cardiac surgery may lead to myocardial stunning and apoptosis, and could therefore impair postoperative patient recovery. Surgical trauma typically induces the liberation of cytokines. Some of these cytokines are strongly associated with the initiation of intracellular proapoptotic pathways through activation of tyrosine kinases and integrins. The latter are known for their deteriorating effects on cardiac function and are strongly involved in cardiac remodeling. Dexamethasone is typically administered prior to cardiac surgery in order to especially reduce the release of proinflammatory cytokines. It has however never been investigated whether this additionally reduces proapoptotic signaling in the human heart, thereby eliminating risk factors for the induction of cardiac dysfunction. In the present study, the investigators therefore aim to investigate whether dexamethasone inhibits proapoptotic pathways in patients undergoing cardiac surgery. Furthermore, the investigators would like to elucidate whether this proposed effect of dexamethasone is related to the reduction of the stress response in the heart or indirectly by suppression of cytokine release. For this purpose the investigators will obtain cardiac biopsies and plasma from patients, who are randomly assigned to placebo or dexamethasone treatment and undergo on and off-pump coronary artery bypass grafting (CABG) surgery.
The main objective of this study is to assess the safety and efficacy of Liposomal Alendronate in the treatment of de novo stenotic lesions in native coronary arteries in a population undergoing PCI with implantation of a bare metal stent. Study hypothesis: Liposomal Alendronate will reduce in-stent restenosis as compared to placebo.
The primary aim of this study is to determine the potential utility of 320-slice volume-CT for obtaining adequate diagnostic accuracy while at the same time improving image quality compared with previous generations of CT scanners and simultaneously enabling a reduction in both radiation exposure and contrast agent amount required.
Myocardial damage occurs in up to 40% of cases when sensitive biomarkers are measured after coronary artery stenting. Such events have been associated with poor outcomes both at 30 days and long term. The cause of such damage is multi-factorial and includes distal propagation of atheromatous and thrombotic debris and the subsequent infiltration of the microcirculation with inflammatory cells. Individually or together these events can occlude the micro-circulation and lead impaired blood flow to heart muscle. The vasodilator adenosine is commonly used in cases of impaired flow in an endeavor to improve flow rate and limit myocardial damage. Unfortunately the efficacy of this therapy is limited. More recently, there have been clinical studies looking at the administration of adenosine before any potential damage by ballooning or stenting, in an effort to avoid poor distal flow post procedure and thus limit any myocardial damage. Although small numbers of subjects have been included in these trials, there have been encouraging preliminary data. The aim of this study is to assess whether the use of intra-coronary adenosine given directly into the target coronary artery prior to stenting can reduce the incidence of myonecrosis (heart muscle damage)over placebo. We also aim to assess whether this translates to better outcomes at 30 day follow up.
Patients planned for elective conventional coronary angiography will undergo CT coronary angiography (Dual Source CT) in order to assess the correlation of stenosis detection and therapeutic advice between conventional and CT coronary angiography. We hypothesize that their is a good correlation between conventional and CT coronary angiography for stenosis detection and therapeutic advice.
The purpose of this two part study is the assessment of the performance of the XIENCE V® Everolimus Eluting Coronary Stent System (XIENCE V® EECSS) in the treatment of the specific setting of patients with Multi-Vessel Coronary Artery Disease (MVD).
The purpose of this Clinical Evaluation is the continued assessment of the XIENCE Everolimus Eluting Coronary Stent System (XIENCE V® and XIENCE PRIME™ EECSS) with the primary focus on clinical outcomes in the treatment of female patients with de novo coronary artery lesions, and the characterization of the female population undergoing stent implantation with a XIENCE stent.
People with diabetes mellitus are more prone to coronary heart disease, stroke, and peripheral vascular disease, and diabetes mellitus has been regarded as an independent risk factor for the progression of coronary artery disease. Several studies have been reported that diabetes increased the risk of cardiovascular mortality in both men and women. With the introduction of drug-eluting stents (DESs), the angiographic rates of restenosis at later months have reduced dramatically in several studies. However, even with DESs, diabetic patients showed increased rates of restenosis and late loss index compared with nondiabetic patients. Diabetes has been considered to be a predictor of poor prognosis after percutaneous coronary intervention with drug-eluting stents. Long-term clinical and angiographic outcomes after percutaneous coronary intervention (PCI) with drug-metal stents (DESs) have been demonstrated to be worse in diabetic patients compared with nondiabetic patients. In the era of DESs, no study has demonstrated the clinical and angiographic outcomes in diabetic patients after zotarolimus-eluting stent implantation by using intravascular ultrasound (IVUS). Pioglitazone is used in the treatment of diabetic patients. Thiazolidinediones increase insulin sensitivity and show favorable effect on blood glucose levels and lipid profiles. The effect of pioglitazone on neointima volume and inflammatory markers has not been compared in prospective manner after zotarolimus-eluting stent implantation. The purpose of this prospective, randomized, single blinded trial is to compare the effect of pioglitazone on inflammatory markers and neointima volume by using IVUS in diabetic patients.