Active clinical trials for "Coronary Artery Disease"

The objective of Series III Run-In Trial is to compare the performance and efficacy of the Supralimus® sirolimus-eluting stent with the Xience V™ everolimus-eluting stent with respect to in-stent luminal late loss at 9 months as assessed by off-line QCA. Ninety percent power to reject the null hypothesis that the Supralimus® stent is inferior to Xience V™ in favor of the alternative hypothesis that the Supralimus® stent is not inferior to Xience V™.

The primary objective of this study is to compare the rate of device-oriented composite consisted of cardiac death, myocardial infarction not clearly attributable to a nontarget vessel, and clinically indicated target lesion revascularization among the patients treated with EES, ZES-R, or BES at 24-month clinical follow-up post-index procedure. Trial end points are summarized in Table I. The hypothesis is that BES is equivalent to EES or BES is equivalent to ZES-R at the primary end point.

This is a multi-center, randomized, study to compare the efficacy of zotarolimus-eluting stent (Resolute Integrity or Resolute Onyx stent) or everolimus-eluting stent (Xience Prime or Xience Xpedition or Xience Alpine stent) for very long coronary lesions.

The primary objective of this study is to evaluate the safety and effectiveness of a direct stenting technique compared to conventional stenting with pre-dilatation strategy using the CoStar Paclitaxel-eluting coronary stent system for the treatment of a single de novo lesion in a native coronary artery ≤ 25 mm long in a native coronary artery 2.5-3.5 mm diameter.

Patients who have stents placed in their coronary arteries require treatment with at least two medications to prevent platelets from sticking to the stainless steel stent and forming a blood clot that can result in a heart attack. The 2 anti-platelet medications used for most patients with stents are aspirin and clopidogrel (Plavix). These are usually prescribed for 1-12 months (the length of time depends on the number and types of stents implanted). Although the typical long-term dose of clopidogrel is 75 mg by mouth once daily, a larger dose (known as a loading dose) is usually given at the start of treatment to help the medication take effect more quickly. Prior to January 2006, most patients at the Beth Israel Deaconess Medical Center (BIDMC) who were undergoing PCI and who had not already been taking clopidogrel would receive a loading dose of 300-600 mg of clopidogrel in the cardiac catheterization procedure room immediately after the angioplasty and stenting portion of the procedure. However, several recent studies suggest that administering clopidogrel 600 mg at least two hours prior to an angioplasty procedure can reduce the rate of complications afterwards (especially reducing the chances of detectable damage to the heart muscle). The main purpose of this study is to see whether giving a loading dose of clopidogrel 600 mg to outpatients scheduled to undergo cardiac catheterization with coronary angiography can decrease the risk of procedure-related complications during the 14 days following the cardiac catheterization compared to a strategy of giving clopidogrel 600 mg after the procedure only to those who undergo angioplasty. We will focus our attention particularly on detecting damage to heart muscle following angioplasty (which might be expected to improve with a loading dose of clopidogrel before the procedure) and on bleeding and other groin complications (which might worsen with clopidogrel loading before the procedure). The drug clopidogrel has been approved by the Food and Drug Administration (FDA) for use in patients with a recent or ongoing heart attack, narrowings in major blood vessels outside the heart, or recent stroke with a loading dose of 300 mg followed by 75 mg once daily. It has been used in several large studies with a loading dose of 600 mg without a significant increase in major adverse effects. However, we do not yet know if it is useful or safe when given as a loading dose of 600 mg before cardiac catheterization for outpatients with stable symptoms and who are not thought to be in the midst of a heart attack.

Aspirin was proved to be the drug preventing vein grafts from closure and improving clinical outcome after coronary artery bypass surgery. It appears to be effective when being prescribed as early as first 48 hr. after the operation without increasing the incidence of bleeding complications. the exact effective dose is not known.

The objective of our research is to determine whether treatment with magnesium will reduce the incidence of atrial fibrillation in patients undergoing cardiac surgery. Several small studies of magnesium have already been conducted, but these studies were small and the results conflicting. A large, well-conducted study of magnesium treatment is required to definitively determine whether magnesium is effective in preventing this common complication after surgery. In addition, our study will include patients undergoing valvular surgery, a group previously excluded from research despite the fact that they are at increased risk of atrial fibrillation.

This is a randomized, prospective European Multicenter Study comparing complete arterial revascularization of the coronary arteries using arterial graft material exclusively and "conventional" coronary artery bypass surgery using the left internal thoracic artery as graft to the left anterior descending artery (LAD) and vein grafts to other vessels to be bypassed.

The purpose of this study is to determine if stem cell therapy with your own cells (autologous cells) delivered with a catheter to regions of the heart with poor blood flow will be safe and if it will relieve your chest pain, increase the blood flow, and/or improve the cardiac contractility (function) by regenerating blood vessels in your heart.

Study to examine the safety and effectiveness of implanted skeletal muscle cells (cells removed from the thigh muscle) into scarred areas of heart muscle after heart attack.