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Szabadíts Péter - - 2009
Coronary stents are the most important supports in present day cardiology. Flexibility and trackability are two basic features of stents. In this paper, four different balloon-expandable coronary stent systems were investigated mechanically in order to compare their suitability. The coronary stent systems were assessed by measurements of stent flexibility as ...
Zaky Sherif S - - 2009
The endovascular treatment of aortic arch aneurysms is a relatively new technique and is associated with significant surgical and anesthetic challenges. We report a case of a 77-year-old patient with an aortic arch aneurysm at the level of the isthmus, measuring 4.9 x 6.5 cm. The aneurysm involved the origin ...
Kuraishi Keita - - 2009
There are some technical difficulties in treating for a broad necked aneurysm and a higher incidence of recurrence. Because of these drawbacks, more innovative techniques for superior endovascular reconstructive treatment are required. We developed a novel covered stent employing electrospinning to deposit fine polyurethane (PU) fibers onto stents. An in ...
Nishi Shogo - - 2009
Large or giant aneurysms in the craniocervical area with broad necks are of concern and are treated surgically, endovascularly, or in both ways. Surgically, their treatment is difficult, with relatively high risks. For their embolization, we have been developing a high-performance stent graft that has three characteristics: a thin and ...
Zuber-Jerger I - - 2009
Biliary metal stents are a permanent solution for bile duct stenosis. Complications can arise when the stent migrates, breaks or is overgrown by tumour. The following case demonstrates how a Nd:YAG laser can be used to solve these problems. A 93-year-old man presented with jaundice and fever. Two years earlier ...
Aggarwal Vivek Prakash - - 2009
A self expendable Nitinol stent was accidently maldeployed when precise positioning was being done in a pre dilated 100% occluded left subclavian artery. A significant part of stent was hanging into the arch of aorta necessitating removal of stent either surgically or percutaneously. The fully expanded stent was successfully retrieved ...
Piers Lieuwe H - - 2009
Aorto-ostial stenting remains one of the most demanding and risky types of angioplasty to perform. We report a case outlining a creative solution for the reengagement of a protruding aorto-ostial stent. A 69-year-old Caucasian man was admitted to our hospital's coronary care unit with progressive unstable angina five years following ...
Dahm Johannes B - - 2009
AIMS: Recurrent stenosis and stent thrombosis are still major concerns after drug eluting stent placement which inhibits not only the restenostic process but endothelialisation as well. In contrast, through accelerating rapid endothelialisation and development of an earlier functional endothelial layer, passive coatings have shown encouraging results. The objective of the ...
Kondo Yuka - - 2009
We report a case that was successfully treated by primary stent placement without thrombolysis or thrombectomy for graft thrombosis after aortoiliac reconstructive surgery. A 79-year-old man presented with a 2-month history of severe intermittent claudication of the right leg. He had undergone a surgical repair of abdominal aortic aneurysm with ...
Nagai Nobuhiro - - 2009
In this study, we newly developed self-expandable or balloon-expandable covered stents with a biodegradable salmon collagen (SC) film. The SC-covered stents were fabricated by placing a bare stent in a mixture of acidic SC solution and a fibrillogenesis-inducing buffer (pH 6.8) including a cross-linking agent (water-soluble carbodiimide), and subsequent incubation ...
Kos Sebastian - - 2009
The purpose of this study was to demonstrate first magnetic resonance (MR)-guided stenting of iliac and supraaortic arteries using a polyetheretherketone-based (PEEK) MR-compatible guide wire. In vitro and animal experiments were performed in a short magnet wide-bore scanner (1.5 Tesla, Espree, Siemens Healthcare, Erlangen, Germany). For all experiments, a 0.035'' ...
Kim D H - - 2009
Ureteral-iliac artery fistula (UIAF) is a rare life threatening cause of hematuria. The increasing frequency is attributed to increasing use of ureteral stents. A 68-year-old female presented with gross hematuria. She had prior low anterior resection for rectal cancer and a retained ureteral stent. CT abdomen and pelvis showed a ...
Hudsmith Lucy E - - 2009
Two adult patients with isolated, aortic interruption were successfully treated by percutaneous insertion of graft stents. Prior to the intervention, both patients were hypertensive and on medication. In both cases, an ascending aortogram demonstrated a blind ending of the thoracic aorta distal to the left subclavian artery with a large ...
Chern Joshua J - - 2009
Traumatic extracranial carotid artery injuries are rare in children. Treatment options include surgery, anticoagulation therapy and endovascular treatment. There have been only limited reports in the literature documenting endovascular carotid stent placement in the pediatric population. In these reports, stent deployment was utilized in the setting of pseudoaneurysm formation. Here ...
Sarkees Michael L - - 2009
There has been a great deal of recent controversy regarding the risk of very late stent thrombosis with drug eluting stents, especially in the context of antiplatelet therapy cessation. We report a case of very late stent thrombosis of a bare metal stent initially implanted for treatment of a myocardial ...
Agostoni Pierfrancesco - - 2009
A 56 year-old woman underwent percutaneous coronary intervention for a lesion in a small mid-left anterior descending coronary artery (reference vessel diameter by quantitative coronary angiography: 2.11 mm) with a novel drug-eluting stent specifically designed for small vessels, the CardioMind Sparrow stent delivery system. This is a self-expandable sirolimus-eluting nitinol ...
Zilani G - - 2009
The authors describe a novel approach to relieving major venous sinus stenosis at the level of the jugular bulb caused by a petrous meningioma. A balloon-expandable renovascular stent was deployed via a jugular approach to restore venous outflow and thus reduce visual and vestibulocochlear symptoms. Endovascular balloon venoplasty and stenting ...
Peters Bjoern - - 2009
Intravascular or intracardiac stenoses occur in many forms of congenital heart disease (CHD). Therefore, the implantation of stents has become an accepted interventional procedure for stenotic lesions in pediatric cardiology. Furthermore, stents are know to be used to exclude vessel aneurysm or to ensure patency of existing or newly created ...
May Stephen A - - 2009
Medical, percutaneous, and surgical therapies for coronary atherosclerotic disease are developing rapidly, with many recent breakthroughs in metabolic control, improvements in catheter and stent engineering, and advances in surgical technique. Treatment guidelines are still in their infancy and do not take into account several of these recent innovations. Consequently, determining ...
Twine Christopher P CP General and Vascular Surgery, Royal Gwent Hospital, Cardiff Road, Newport, UK, NP20 2UB. - - 2009
Lower limb peripheral arterial disease (PAD) is a common, important manifestation of systemic atherosclerosis. Stenoses or occlusions in the superficial femoral artery may result in intermittent claudication as an early consequence, which may be treated by balloon angioplasty with or without stenting. The objective was to determine the effect of ...
Weiss Sabine - - 2009
Coronary heart disease has become the most common source for death in western industrial countries. Since 1986, a metal vessel scaffold (stent) is inserted to prevent the vessel wall from collapsing [Puel, J., Joffre, F., Rousseau, H., Guermonprez, B., Lancelin, B., Valeix, B., Imbert, G., Bounhoure, J.P, 1987. Endo-prothéses coronariennes ...
Mortier Peter - - 2009
Stent implantation has become a widely accepted endovascular intervention for the treatment of stenosed arteries. This minimally invasive technique has shown excellent results in unbranched arteries. However, stenting bifurcation lesions remains a challenge in coronary intervention as it is associated with a lower success rate. Many different techniques have been ...
Leonardi M M Neuroradiology Department, University of Bologna, Bellaria Hospital; Bologna, Italy - - - 2008
The treatment of giant, large, multiple or wide-necked carotid siphon aneurysms has always represented a challenge for neurosurgeons and neuroradiologists. Very recently the use of stents with tiny holes has been proposed by two companies: Balt Silk Stent in Europe and Pipeline in America. We have used the Silk stent ...
Lv Xianli X Beijing Neurosurgical institute and Beijing Tiantan Hospital, Capital Medical University, Beijing, China - - - 2008
The study assessed the effectiveness and safety of endovascular covered stents in the management of intracranial pseudoaneurysms, fusiform aneurysms and direct carotid-cavernous fistulas. Fourteen endovascular covered stents were used to repair three pseudoaneurysms, six fusiform aneurysms and six direct carotid-cavernous fistulas. Aneurysms were in the carotid artery in seven cases, ...
Kolkman Jeroen-J - - 2008
Splanchnic or gastrointestinal ischemia is rare and randomized studies are absent. This review focuses on new developments in clinical presentation, diagnostic approaches, and treatments. Splanchnic ischemia can be caused by occlusions of arteries or veins and by physiological vasoconstriction during low-flow states. The prevalence of significant splanchnic arterial stenoses is ...
Capelli Claudio - - 2009
Restenosis is a re-narrowing or blockage of an artery at the same site where treatment, such as a balloon angioplasty or stent procedure, has already taken place. Several clinical trials have shown a significant reduction in the restenosis rates with endovascular stenting. The purpose of stenting is to maintain the ...
Manola Sime - - 2010
Coronary stent fracture is a relatively rare but potentially serious complication of coronary artery stenting. It has been recognised as a cause of in-stent restenosis as well as acute stent thrombosis. Most fractures occur in stents after aggressive post-dilatation, stents implanted in tortuous and calcified lesions, and after cardiac trauma ...
Leung J W - - 2008
BACKGROUND AND STUDY AIMS:There is a paucity of in vitro methods for evaluating ERCP accessories. We hypothesize that the time taken to perform a simulated single stent or multiple stents placement is different for stenting systems with or without the capability of intraductal ductal release (IDR) of the guide wire. ...
Yoon Won-Ki - - 2008
The authors report on a case of intravascular ultrasonography (IVUS)-guided stent angioplasty for iatrogenic extracranial vertebral artery (VA) dissection in a 49-year-old man after coil embolization for an unruptured aneurysm of the right posterior inferior cerebellar artery. Insignificant dissections occurred during the procedure. Postoperatively, the patient experienced gradually worsening posterior ...
De Wolf Axel - - 2008
We report on a 65-year-old patient who underwent a semi-urgent percutaneous coronary intervention (PCI) for a very late stent subthrombosis (13 months) in a paclitaxel-eluting stent (PES) while still on dual antiplatelet therapy.The procedure was complicated by a retrograde embolization into the circumflex artery (CFX). We will focus on the ...
Beard Jonathan D - - 2008
This review considers the roles of endovascular and open surgery for critical lower limb ischemia. The TransAtlantic Inter-Society Consensus document offers sensible guidelines for the treatment of both suprainguinal and infrainguinal disease. For bilateral/diffuse suprainguinal disease, aortobifemoral bypass remains the best option, but great care should be taken in this ...
Schillinger M - - 2008
Carotid artery stenting (CAS) has emerged as a promising minimal invasive treatment alternative to carotid arterectomy for patients with symptomatic and asymptomatic carotid artery stenosis. Complication rates of CAS continuously decreased during recent years. Operator experience and technical improvements equally contributed to the improved safety of the procedure. Today, devices ...
Robertson Scott W - - 2008
PURPOSE: To examine the effects of swallowing and side-to-side head turning on stents in the internal carotid artery. METHODS: Seven patients (4 men; mean age 76.9 years) who underwent carotid artery stenting for the treatment of atherosclerotic cervical carotid artery disease were examined with cine fluoroscopy. Geometric processing techniques were ...
Kotelis Drosos - - 2008
This report aims to describe an effective endovascular technique to repair a stent graft collapse in the distal aortic arch. We report a case of a stent graft collapse after off-label endovascular treatment of a traumatic aortic transection using a Gore TAG endoprosthesis (oversizing 12%). The collapse was treated by ...
de Borst Gert J - - 2008
PURPOSE: To evaluate if there are any differences in duplex ultrasound velocity measurements between native and stented carotid arteries using duplex ultrasound in an animal model. METHODS: The common carotid artery of 5 pigs was exposed bilaterally (10 arteries). Diameters and velocities were measured by ultrasound in the proximal, mid, ...
Timmins Lucas H - - 2008
To examine the solid mechanical effects of varying stent design and atherosclerotic plaque stiffness on the biomechanical environment induced in a diseased artery wall model. Computational modeling techniques were employed to investigate the final radius of the lumen and artery wall stresses after stent implantation. Two stent designs were studied ...
Seifert T - - 2009
About half of all transient ischaemic attacks (TIAs) or strokes in the posterior circulation are caused by the arterial stenosis. The purposes of this study were to determine the safety of stent-assisted percutaneous transluminal angioplasty (stent-PTA) and its efficacy for the prevention of recurrent stroke in patients with symptomatic artery ...
Yazdani Saami K - - 2009
PURPOSE: To develop an in vitro system capable of rapidly evaluating how specific stent structures may stimulate smooth muscle cell proliferation in living isolated porcine carotid arteries. MATERIALS AND METHODS: A vascular bioreactor system was developed that housed a native porcine carotid artery under physiologic pulsatile flow and pressure conditions. ...
Stone James R - - 2009
PURPOSE: Endovascular stent-grafts are increasingly being used for treatment of abdominal and thoracic aortic aneurysms. Postprocedural complications include development of endoleaks. Recently, an embolic agent known as Onyx has been employed to treat type II endoleaks. Onyx is a biocompatible copolymer dissolved in dimethyl sulfoxide (DMSO). Although DMSO is known ...
Juszkat Robert - - 2009
The present report describes a case of type III endoleak from a tear in the fabric of a Zenith bifurcated stent-graft approximately 6 months after implantation. The reason of the fabric tear was unknown. The complication was successfully treated by aortouniiliac stent-graft implantation followed by creation of a femorofemoral bypass.
Christman Matthew S - - 2009
PURPOSE: Extrinsic ureteral obstruction can be a challenging entity for the urologist since half of the ureteral stents placed for malignant obstruction fail. We evaluated the resistance to radial compression of various stents. MATERIALS AND METHODS: Silhouette(R) 4.6Fr, 6Fr and 8Fr, Sof-Curl Tecoflex 6Fr, Resonance 6Fr, Polaris Ultra 6Fr and ...
Hara Masahiko - - 2008
We report two cases of heavily calcified infrarenal aortic stenosis that were successfully treated by intravascular ultrasound- (IVUS)-guided stenting. Two middle-aged women visited our hospital due to intermittent claudication. Diagnostic arteriography revealed possible infrarenal aortic stenosis even though the findings were equivocal. IVUS demonstrated heavily calcified atherosclerotic lesions and allowed ...
Fujita Wakako - - 2009
Acute aortic dissection frequently causes life-threatening organ ischemia. The optimal therapy for acute type-B aortic dissection is still controversial. Early surgery for acute dissections with organ malperfusion is known to carry a high morbidity and mortality. Endovascular treatment, such as stent placement for branch stenosis, percutaneous balloon fenestration for compression ...
Takano Masamichi - - 2009
A polytetrafluoroethylene (PTFE)-covered stent is specially used to treat coronary perforation complicating percutaneous intervention in order to prevent the aneurysm from rupturing, but until now it has not been known if endothelialization occurs inside this type of stent. A patient with a giant aneurysm of the right coronary artery underwent ...
Choi Gilwoo - - 2009
The knowledge of dynamic changes in the vascular system has become increasingly important in ensuring the safety and efficacy of endovascular devices. We developed new methods for quantifying in vivo three-dimensional (3D) arterial deformation due to pulsatile and nonpulsatile forces. A two-dimensional threshold segmentation technique combined with a level set ...
Okahara Mika M Department of Radiology, Shinbeppu Hospital; Tsurumi, Beppu, Japan - - - 2008
Carotid stenting (CAS) for carotid stenosis has developed rapidly over the last decade. Instent low density area supposed plaque protrusion or thrombus is sometimes observed on CT angiography after CAS. We evaluate the frequency and time course of the small in-stent low density after carotid artery stenting and discuss its ...
Uchida Naomichi - - 2009
OBJECTIVE: To describe the fate of the false lumen remaining in the descending thoracic aorta after extensive primary repair of the thoracic aorta by the modified elephant trunk technique with a stent graft for acute type A aortic dissection, particularly the changes of the false lumen on enhanced CT scanning. ...
Edgell Randall C - - 2010
BACKGROUND: Vertebral artery origin stenosis is a known cause of stroke that is treatable with angioplasty and stenting. Previous studies have demonstrated that this technique is safe but is limited by high rates of in-stent stenosis. Anti-proliferative drug-eluting stents are an alternative for reducing in-stent stenosis at the vertebral artery ...
Castriota Fausto - - 2008
BACKGROUND: A 69-year-old male patient with severe asymptomatic carotid artery stenosis was treated percutaneously with implant of two self-expandable stents in the right carotid overlapped to each other by 5 mm. The 15-month follow-up colour-Doppler ultrasound (CDU) revealed a severe stenosis in the target vessel and an image suggesting migration ...
Varbella Ferdinando - - 2008
BACKGROUND: The treatment of complex long lesions of proximal left anterior descending artery involving the origin of diagonal branch is controversial. The aim of the present study is the evaluation of safety and clinical results of percutaneous coronary angioplasty with drug-eluting stents. METHODS: Since June 2002, we instituted a prospective ...
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