نتایج جستجو برای: metal stent
تعداد نتایج: 228413 فیلتر نتایج به سال:
OBJECTIVES We sought to examine the efficacy of paclitaxel-eluting stent implantation in the left anterior descending coronary artery (LAD). BACKGROUND Restenosis and recurrent cardiac events after percutaneous intervention are more common for lesions in the LAD than other native coronary arteries, and often necessitate bypass surgery. Drug-eluting stents may improve the long-term prognosis o...
BACKGROUND Late stent malapposition has been reported to be an abnormal finding after vascular brachytherapy and, possibly, implantation of drug-eluting stents. It can only be detected if intravascular ultrasound (IVUS) is performed at follow-up. However, the "background" frequency of late stent malapposition after bare-metal stent implantation is not known. METHODS AND RESULTS We studied 206...
A patient presenting with 'edge' in-stent restenosis 12 years after the implantation of a bare-metal stent in the mid-left anterior descending coronary artery is described. Optical coherence tomography disclosed the presence of ruptured neoatherosclerosis at the stent edge. The value of this imaging technique to unravel this unique underlying anatomic substrate is discussed. The therapy of choi...
Bare metal stents enabled a reduction in the risk of early procedural complications and restenosis in comparison with balloon angioplasty alone, but introduced a new and device-specific iatrogenic condition, ie, in-stent restenosis due to increased neointimal hyperplasia. Sirolimus- and paclitaxel-eluting stents reduce restenosis and the need for new revascularizations in comparison with bare m...
from july, 1987 to oct, 1989 , 104 patients underwent 111 transurethral ureteroscopy procedures at the air force medical center. all intramural ureters were dilated by flexible metal dilators. the overall success rate for ureteral stone removal was 95.8 per cent. ureteroscopy was done for evaluation of gross hematuria, strictures, ureteral stent, and ureteral and pyelocalyceal tumors. the overa...
CONTEXT To demonstrate an EUS-guided biliary drainage in patient with gastrointestinal tract modified surgically. CASE REPORT An EUS guided access to the left intra hepatic duct, followed by an antegrade passage of a partially self-expandable metal stent that was removed by using an enteroscope, in one patient with hepatico-jejunal anastomosis. There were no early or delayed complications and...
An 83-year-old man was admitted to our department, presenting with jaundice, fever, and nausea. CT revealed a pancreatic head tumor with duodenal invasion. Endoscopic transpapillary biliary drainage was unsuccessful due to stenosis at the second portion of the duodenum and tumor invasion to the papilla of Vater. Using a convex linear array echoendoscope, a fully-covered metal stent was placed a...
a w a t t a c s t v k p s ne of the most dreaded complications after percutaneous oronary arterial angioplasty is stent thrombosis. This erious untoward event usually results in acute myocardial nfarction with high mortality. Stent thrombosis often ocurs early, within 30 days of implantation, in patients who eceive bare metal coronary arterial stents. However, paients undergoing drug-eluting st...
BACKGROUND Stent thrombosis is a lethal complication of endovascular intervention. Concern has been raised about the inherent risk associated with specific stent designs and drug-eluting coatings, yet clinical and animal support is equivocal. METHODS AND RESULTS We examined whether drug-eluting coatings are inherently thrombogenic and if the response to these materials was determined to a gre...
We report a patient's case of slow progressive in-stent restenosis 10 years after bare-metal stent implantation to his carotid artery. We treated the patient with an additional stent placement under a distal filter protection device. Optical coherence tomographic assessment and plaque histology during the carotid artery stenting (CAS) revealed atheromatous change at in-stent neointima, which co...
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