نتایج جستجو برای: metal stent
تعداد نتایج: 228413 فیلتر نتایج به سال:
مشکلات قلبی عروقی امروزه مشکلات زیادی را برای افرادی زیادی ایجاد کرده است. یکی از عواملی که باعث سکته قلبی می- شود گرفتگی رگ قلب می باشد که به وسیله ی ضایعاتی مانند چربی به وجود می آید. یکی از راه های مقابله با این مشکل استفاده ازاستنت ها قلبی می باشد.حال این استنت ها به دو صورتbare-metal stent وdrug-eluting stent عرضه می-شود.طریقه عملکرد این استنت ها به این صورت می باشد که وقتی در داخل رگ قرار...
Background and Purpose:Coronary artery Stenting is known to improve the outcome for ischemic heart disease. Many clinical studies have been performed to determine the long-term outcome of coronary Stenting and most of them were based on first-generation bare-metal Stents. The aim of this study is to evaluate long-term (24 6.4 month) results of second-generation bare metal stent. Materials an...
Background: There have been reports on stent-related vascular erosions about patients with benign or malignant stenosis of the esophagus who received endoscopic stent insertion for palliative intention for oral intake. Case presentation: A 61-year-old woman with esophageal cancer located in the middle part of esophagus was treated with esophagectomy. Two years following the surgery, malignan...
background: there have been reports on stent-related vascular erosions about patients with benign or malignant stenosis of the esophagus who received endoscopic stent insertion for palliative intention for oral intake. case presentation: a 61-year-old woman with esophageal cancer located in the middle part of esophagus was treated with esophagectomy. two years following the surgery, malignant s...
Stent is a metal mesh tube for opening the obstructed vessels of the body. Ni-Ti alloy is a suitable metal for fabrication of stent due to its potential for applying the appropriate stress and strain to the vessel walls. In this study, super-elastic Nitinol wire was used to build stent samples usable to open femoral vessel. Ageing was performed at 500°C for different periods of time to determin...
AIM To compare polytetrafluoroethylene stent graft (PTFE) with sirolimus and bare metal stents in reducing in-stent restenosis in native coronary vessels in patients with acute coronary syndrome. METHODS The study included patients who underwent stent implantation in acute coronary syndrome from January 2003 to May 2004. The patients (n=119) were randomized either to stent graft group (n=40),...
Endoscopic Removal of a Proximally Migrated Metal Stent during Balloon Sweeping after Stent Trimming
Placement of a self-expanding metal stent (SEMS) is an effective method for palliation of a malignant biliary obstruction. However, metal stents can cause various complications, including stent migration. Distally migrated metal stents, particularly covered SEMS, can be removed successfully in most cases. Stent trimming using argon plasma coagulation may be helpful in difficult cases despite co...
BACKGROUND Reports regarding the relationship between the length and diameter of implanted drug-eluting stents and clinical and angiographic outcomes in dialysis patients are limited. AIM We investigated the efficiency of drug-eluting stents for coronary artery disease in patients on dialysis from the viewpoint of stent sizing. METHODS Sirolimus-eluting stents were implanted in 88 lesions a...
aim : the aim of this systematic review was to evaluate the current reported efficacy and the mortality rate of sems treatment in uncontrolled bleeding patients. background : esophageal variceal bleeding (evb) represents a life threatening pathology. despite the adequate pharmacologic and endoscopic treatment, continuous or recurrent bleeding, named as uncontrolled bleeding, occurs in 10-20% ...
Very late stent thrombosis occurs in patients with bare metal stent implantation, although the annual incidence is much lower than that after drug-eluting stent implantation. In-stent neoatherosclerosis with ruptured plaques and thin-cap fibroatheromas has been observed in bare metal stents. Atherosclerotic plaques harvested from patients with very late stent thrombosis and those with acute cor...
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