View clinical trials related to Saphenous Vein Graft Disease.
Filter by:The study is a prospective cohort study conducted in Tianjin Chest Hospital, China. Patients with saphenous vein graft disease after coronary artery bypass graft, and planning for receiving percutaneous coronary intervention after virtual histology intravascular ultrasound will be enrolled between May 2017 and April 2019. These subjects will be followed up at 1, 6 and 12 months post-operation of PCI to assess the short-term and long-term effect.
Saphenous vein graft disease remains an unresolved medical problem. Many vein grafts occlude in the first year after bypass surgery, leading to adverse cardiovascular outcomes, including recurrent angina, myocardial infarction, and the need for repeat coronary intervention. While aspirin is the standard antiplatelet treatment after CABG surgery, 10-20% of vein grafts continue to occlude despite contemporary secondary preventative therapy. Compared to aspirin and other antiplatelet therapies like clopidogrel, ticagrelor treatment leads to a more pronounced platelet inhibition, and may substantially improve graft patency following CABG compared to aspirin. No data has yet to be collected regarding the impact of ticagrelor on saphenous vein graft patency following CABG. In this context, the investigators seek to compare vein graft patency between patients randomized to receive aspirin therapy, the current standard of care, or ticagrelor treatment, starting in the early postoperative period, and continuing for 2 years after CABG.
During coronary artery bypass graft surgery (CABG), saphenous vein from the leg is used to bypass the atherosclerotic blockages in the arteries of the heart. Unfortunately, vein bypasses themselves develop blockages over time, a process termed saphenous vein graft disease. By lowering cholesterol levels in the blood, statin medications are used after surgery to prevent the development of atherosclerotic blockages in the vein bypasses. Recently, higher doses of statin medications have been introduced, with some studies showing that they are more effective than traditional doses when used in heart attack patients. Furthermore, laboratory tests have shown that higher doses of statin medications can slow the development of atherosclerosis. Despite these benefits, very little is known regarding the use of high-dose statin therapy after bypass surgery in humans. The goal of this study will be to see if high-dose statin therapy will prevent the development of vein graft occlusion during the first year after bypass surgery. Patients will be randomized to receive either high-dose statin therapy or conventional moderate-dose statin therapy starting within 4 days of surgery and continuing for the duration of one year after the operation. The statin medication will be given in capsule form. During the course of this study, neither the patient nor the health care team will know which treatment each patient is receiving. One year after bypass surgery, a computed tomography (CT) coronary angiogram will be performed to evaluate the patency of the vein bypasses.
This is a multi center, prospective study designed to demonstrate the safety and performance of the GARDEX Embolic Protection System when used as an adjunctive device during saphenous vein graft (SVG) interventions.
A meta-analysis to compare outcomes of drug eluting stents (DES) versus bare metal stent (BMS) in saphenous vein graft (SVG) disease.
This is a multicenter, prospective study designed to demonstrate the performance and safety of the FiberNet Embolic Protection System when used as an adjunctive device during saphenous vein graft (SVG) intervention.
The primary objectives of this trial are: 1) to evaluate the safety of NONA-L-ARGININE in ex vivo application to saphenous vein segments prior to grafting; and, 2) to obtain preliminary data on the biological effects of NONA-L-ARGININE, as compared to placebo, in the prevention of neointimal hyperplasia.
Context: Sirolimus-eluting-stents have improved the benefits of percutaneous interventions in native coronary arteries reducing the occurrence of restenosis and repeated revascularization, however saphenous vein grafts have been always excluded form randomized trials. Objective: To evaluate the angiographic and clinical impact of sirolimus-eluting-stents with respect to bare-metal-stents in degenerated vein grafts. Design: Double-blind randomized controlled non-industry-sponsored trial. Setting: A single-center tertiary-care referral hospital. Patients: All patients are randomly allocated to sirolimus-eluting-stent implantation or the corresponding bare-metal-stent. All patients are followed clinically and repeated angiographic follow-up is performed in all at 6-months. Main outcome measure: Primary end-point is 6-months angiographic in-stent late loss. Secondary end-points include: binary angiographic in-stent and in-segment restenosis, intravascular-ultrasound-measured neo-intimal hyperplasia volume and all the clinical events (death, myocardial infarction, target-lesion and target-vessel revascularization).