نتایج جستجو برای: coronary stent
تعداد نتایج: 218325 فیلتر نتایج به سال:
OBJECTIVES The ORBIT II (Evaluate the Safety and Efficacy of OAS in Treating Severely Calcified Coronary Lesions) trial evaluated the safety and efficacy of the coronary Orbital Atherectomy System (OAS) to prepare de novo, severely calcified coronary lesions for stent placement. BACKGROUND Despite advances in interventional techniques, treatment of calcified coronary lesions remains a challen...
Coronary stent fracture (SF) is a potential cause of failure increasing the risk for in-stent restenosis, thrombosis, target lesion revascularization and major adverse cardiac events. Overall incidence SF ranges from <1.0% up to 18.6% can be found in 60% failed devices. Advanced imaging techniques have improved detection SF. However, defining optimal therapeutic approach towards these comple...
Despite its low incidence, stent thrombosis (ST) is one of the most dreaded complications of percutaneous coronary intervention. Endeavor (Medtronics Europe SA) is a new zotarolimus-eluting stent (ZES) with a favorable safety profile that was reported in early and ongoing trials. However, few lethal stent thromboses related to this new drug eluting stent (DES) have been reported. We experienced...
AIMS Sirolimus- and paclitaxel-eluting stents effectively reduce restenosis in small coronary vessels. The relative efficacy of these drug-eluting stents in this high-risk subset is not known. METHODS AND RESULTS A total of 360 patients undergoing percutaneous coronary intervention for de novo lesions in native coronary vessels with a diameter of <2.80 mm received randomly paclitaxel-eluting ...
Stenting of the right coronary artery stenosis caused coronary perforation and profound dye (blood) extravasation in a 69-year-old female patient. Instantaneous balloon inflation followed by implantation of a polytetrafluoroethylene- (PTFE-)covered stent sealed the coronary perforation, restored the blood flow, and perceivably caused acute occlusion of a large side branch (SB). The immediate in...
Restenosis and stent thrombosis remain major concerns after percutaneous coronary intervention for the treatment of coronary artery disease. The present review was undertaken in order to highlight the various coronary stents that have been investigated in our Heart Research Center, and how far we have come from the first heparin-coated stent first used in the late 1990s. Thereafter, from the ab...
Drug-eluting stents have proven long-term safety and effectiveness for the treatment of coronary artery disease especially due to their marked efficacy in reducing restenosis rates. Nevertheless, the rates of late and very late stent thrombosis, especially in first-generation systems, have raised some concerns. Moreover, percutaneous coronary intervention to small vessels (especially <2.5 mm) r...
A 73-year-old female underwent percutaneous coronary intervention (PCI) because of stable angina. An elective PCI for the RCA lesion was first performed with deploying sirolimus eluting stents (SES). Three weeks later, PCI was also provided in the residual LAD lesion. Eight months later, she presented with new angina. CAG revealed an in-stent restenosis in the mid LAD and a large eccentric sacc...
BACKGROUND With the advent of percutaneous coronary intervention, specifically the bare metal stent and subsequently, the drug-eluting stent, the scope of interventional cardiology has greatly increased. Aspirin, in combination with a thienopyridine is the present-day cornerstone of oral antiplatelet therapy after coronary artery stent placement. Continuing this chronic antiplatelet therapy, to...
OBJECTIVES Chlamydia pneumoniae (C. pneumoniae) has been detected in tissue from coronary atherosclerotic vascular lesions and may be involved in the pathogenesis of atherosclerosis. However, the effect of prior C. pneumoniae infection on coronary intimal hyperplasia after stent implantation and on coronary microvascular function is unknown. METHODS Seventy-three patients with stable angina p...
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