View clinical trials related to Coronary Artery Disease.
Filter by:Comparing standard treatment versus optimized antiplatelet therapy and outcomes measures.
The objective is to investigate the effect of a comprehensive sexual rehabilitation program, consisting of a psycho-educative component and a physical exercise component. The primary hypothesis is that, a comprehensive sexual rehabilitation program improves sexual function.
The use of drug eluting stents (DES) used to treat coronary artery blockages is limited by poor healing of the stented area. This will require the combined use of blood thinners such as aspirin and clopidogrel (i.e. dual anti-platelet therapy (DAPT)) to prevent complications such as clot formation on the stent which may lead to a heart attack. Diabetic patients and those presenting with a heart attack at the time of stent placement are at increased risk for clot formation. However, little is known of the healing responses after stent placement in these populations. Currently all patients receiving DES are advised to complete DAPT for twelve months although more personalized durations of DAPT based on stent healing would reduce both clot formation and potential bleeding from the blood thinners, thereby improving the long-term safety of DES. Intracoronary optical frequency domain imaging (OFDI) is a novel high resolution invasive imaging technique that has the ability to evaluate stent healing at follow-up. Among the commercially available coated stents used in the U.S., the zotarolimus eluting stents (RESOLUTE Integrity, Medtronic, Minneapolis, MN) has demonstrated superior healing in both preclinical and clinical studies. The purpose of this trial is to determine the healing responses of the RESOLUTE Integrity stent as detected by OFDI in patients with and without diabetes presenting with ACS. Specifically, in this observational study, the study team will investigate non-insulin dependent diabetics and non-diabetics in the setting of ACS and RESOLUTE Integrity stent placement. The investigators hypothesize that healing responses in patients with non-insulin dependent diabetes will be similar to those without diabetes presenting with ACS and that a majority of patients will demonstrate complete healing as determined by OFDI measurements.
In view of the lack of large-scale clinical study and potent evidence-based medicine, the investigators designed a randomized, double-blind, placebo-controlled study to ascertain whether preoperative intravenous administration with glutamine can improve the postoperative cardiac function and prognosis of adult patients undergoing cardiac surgery. The investigators want to detect the levels of myocardial protein O-GlcNAc modification and HSP70 expression, changes in sensitive indicators of myocardial injury, systemic inflammatory reaction and oxidative stress levels, and to examine the correlation between these changes and Clinical manifestations. The ultimate goal of the study is to explore a new way for clinical myocardial protection.
Transradial approach (TRA) reduces vascular complications and access related-bleeding compared to transfemoral approach (TFA). However, this technique has been related to higher radiation exposure during coronary angiography and percutaneous coronary intervention. Previous studies have shown that TRA demands a long learning curve, and procedure success rate increases with operator's experience. Our hypothesis is that the higher radiation exposure during TRA is not a technique issue, but due to operator's expertise. The aim of this study is to evaluate whether experienced operators with either TRA or TFA can perform diagnostic coronary angiography with similar radiation exposure.
Early stent thrombosis has been noted with increased frequency in acute coronary syndrome (ACS) patients undergoing percutaneous coronary intervention (PCI) who are treated with bivalirudin and clopidogrel. The brief half life of bivalirudin acting in concert with the delayed action of clopidogrel likely exposes patients to thrombosis during a vulnerable period of reduced antiplatelet effect in the immediate post stenting period. Combination therapy with bivalirudin and prasugrel is conceptually attractive as the more rapid onset of action of prasugrel could potentially significantly diminish the vulnerable period, likely reducing the potential for acute stent thrombosis. The trials which have documented the efficacy of prasugrel as compared to clopidogrel have, in general, not reported on patients in whom bivalirudin was utilized. Currently, in the United States, bivalirudin is the most commonly used adjunctive agent used during PCI. Using light transmission aggregometry, this study will examine the inhibition of platelet aggregation in patients randomized to treatment with clopidogrel vs prasugrel during the vulnerable period following the discontinuation of bivalirudin therapy. The investigators anticipate that this study will document significant enhancement of inhibition of platelet aggregation in patients randomized to prasugrel treatment.
A prospective, randomized, active-control, multi-center clinical trial comparing the safety and efficacy of the Svelte Drug-Eluting Coronary Stent Integrated Delivery System (IDS) to that of the commercially available Resolute IntegrityTM Drug-Eluting Stent. The study objective is to assess the safety and efficacy of the Svelte Drug-Eluting Coronary Stent Integrated Delivery System (IDS) compared to the Resolute IntegrityTM Drug-Eluting Stent in patients with single, never previously treated coronary artery lesions
The goal of the flow-mediated constriction/ FMC-registry is to investigate whether the measurement of endothelial function using flow-mediated dilation and flow-mediated constriction provides on the presence of coronary atherosclerosis and on the prognosis of patients undergoing coronary angiography.
The new cadmium-zinc-telluride (CZT) technology is a powerful tool for cardiac nuclear medicine. The increased photon counting sensitivity of camera can be used to explore novel protocols like dual isotope (rapid stress Tl-201/rest Tc-99m protocol for use with high-speed SPECT MPI). The use of dual isotope imaging is very interesting because this imaging combines the use of thallium-201 with technetium-99m agents permitting optimal image resolution and simultaneous assessment of viability, all with an exam duration of approximately 20 minutes. However, no study compares stress thallium-201/rest technetium-99m sequential dual isotope high-speed myocardial perfusion imaging versus invasive coronary angiography. The investigators report here the first validation of high-speed protocol with dual isotope for myocardial perfusion imaging using invasive coronary angiography as the standard of reference.
The purpose of this study is to determine how a stress reduction program, called Mindfulness Based Stress Reduction (MBSR), compared to a health education program, improves well being and reduces the risk of heart disease in women Veterans. Recruitment completed.