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Results 251 - 300 of 2912
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Vajda Zsolt - - 2010
INTRODUCTION: We evaluated the coronary balloon-expandable cobalt chromium stent Coroflex Blue for the treatment of intracranial atherosclerotic arterial stenoses (IAAS). METHODS: Between March 2007 and October 2007, a total of 25 patients (20 male, age median 67 years) with 30 IAAS underwent endovascular treatment using Coroflex Blue stents (B. Braun, ...
Hecht Harvey S - - 2009
OBJECTIVES: The goal of this study was to define the frequency of stent gaps by 64-detector computed tomographic angiography (CTA) and their relation to in-stent restenosis (ISR), stent fracture (SF), and overlap failure (OF). BACKGROUND: SF defined by catheter angiography or intravascular ultrasound has been implicated in ISR. METHODS: A ...
Salazar Miguel - - 2009
This report describes a technique for the exact deployment of a stent in ostial renal artery stenosis (RAS) by using a second wire inserted through the last cell of a stent. This stent tail wire or anchor technique was first described by Szabo et al. (Am J Cardiol 2005; 96:212H) ...
Patel Tejas - - 2009
BACKGROUND: Endovascular intervention of vertebrobasilar stenosis is a relatively new but alternative modality of management, supported by very few studies and case reports. Femoral approach has been used in all. The purpose of present study is to evaluate feasibility of the radial artery as an alternative approach for vertebral artery ...
Kitzm??ller Erwin - - 2009
Stent implantation in the arterial duct has achieved great acceptance as an alternative to an aortopulmonary shunt procedure. Despite challenging, also tortuous arterial ducts as in ToF and pulmonary atresia with VSD can be addressed, since flexible open cell coronary stents are available. We describe two patients with ToF and ...
Rauch Ralf - - 2009
Obstruction of the so-called Fontan tunnel represents a life-threatening complication and requires immediate intervention. We describe the successful use of prolonged thrombolysis with rt-PA, allowing stent placement in an extracardiac tunnel in a 7-year-old boy.
Rizik David G - - 2009
Provisional T-stenting is a widely used strategy for the treatment of coronary artery bifurcation lesions. However, the use of conventional stents in this setting is limited by multiple factors; this includes technical considerations such as wire wrap when accessing the involved vessel, and stent overlap at or near the carina ...
Blasel Stella - - 2010
The purpose of this investigation was to provide a detailed description of the angiographic results after stenting of high-grade intracranial stenosis using balloon-expandable stents. Forty consecutive patients with symptomatic atherosclerotic intracranial stenosis >50% received endovascular treatment by placement of balloon-expandable stents using the concept of slight underdilation and strict avoidance ...
San Juan Aurélie - - 2009
In patients receiving drug eluting stents, there is a growing concern about both the long-term toxicity/degradability of the polymers used for the coating, and the nature of the therapeutic agents. We hypothesized that the use of a functionalized biocompatible polymer for a stent coating could be appropriate for local arterial ...
Kühn Anna Luisa AL Department for Interventional and Diagnostic Neuroradiology, Saarland University, Saarland, - - 2014
This study aims to test a novel balloon expandable stent covered with a polytetrafluoroethylene membrane (neurovascular embolization cover (NEC), NFocus Neuromedical, Palo Alto, California) regarding angiographic and histologic aneurysm occlusion. Radiopacity, stent placement, navigation, flexibility, and intimal proliferation were also evaluated. Eight aneurysms were induced in New Zealand white rabbits. ...
Suh S H - - 2010
BACKGROUND AND PURPOSE: Stent placement may be an effective and last resort method for recanalization of recalcitrant intracranial artery occlusion. The purpose of this study was to evaluate the safety and efficacy of a self-expanding stent for the recanalization of acute embolic or dissecting intracranial artery occlusion. MATERIALS AND METHODS: ...
Fefer Paul - - 2009
We report on a patient with Takayasu's arteritis with coronary artery involvement who developed late stent malapposition 2 years after drug eluting stent implantation in the left anterior descending artery. Due to progression of the aneurysm on angiographic follow up, a covered stent was deployed. Problematic aspects of percutaneous coronary ...
Utsunomiya Makoto - - 2009
The retrograde approach is a recently introduced technique for percutaneous coronary intervention (PCI) of chronic total occlusions (CTO). To improve the long-term patency rate, stent implantation is necessary for CTO; however, antegrade stent delivery to the lesion is sometimes impossible in cases where there is a complex coronary anatomy. Although ...
Jabara Refat - - 2009
AIMS: The present study was designed to evaluate a novel third generation bare-metal stent (BMS) comprised of an ultra-thin-strut, cobalt-chromium platform with fixed geometry, uniform cell size, and superior surface finish in a porcine coronary artery model. METHODS AND RESULTS: A total of 47 BMS of two types were implanted ...
Sun Zhonghua - - 2009
BACKGROUND: This study aimed to investigate the diagnostic value of computed tomography virtual intravascular endoscopy (VIE) in the follow-up of patients with abdominal aortic aneurysm (AAA) treated with fenestrated stent grafts. METHODS: A total of 19 patients (17 males and 2 females; mean age: 75 years) with AAA undergoing fenestrated ...
van Keulen J W - - 2010
OBJECTIVE: Dynamic imaging provides insight into aortic shape changes throughout the cardiac cycle. These changes may be important for proximal aortic stent graft fixation, sealing and durability. The objective of this study is to analyse the influence of different types of stent grafts on dynamic changes of the aneurysm neck. ...
Su Jimmy Li-Shin - - 2009
Coronary stents are the most commonly used treatment in the United States to repair narrowed or weakened arteries. The ability to visualize the stent during the stenting procedure and post-surgery is crucial to correctly place the stent with respect to the vessel stenosis, and to identify its position within the ...
Rohde Stefan - - 2010
The endovascular treatment of wide-necked aneurysms remains challenging. The "Y"-stenting technique has been used for stent-assisted coil embolization of wide-necked bifurcation aneurysms. So far, this technique has been described for aneurysms of the basilar apex or the middle cerebral artery bifurcation and only for open stent systems using the Neuroform ...
Oztürk M Halil - - 2010
Isolated iliac artery aneurysms are rare lesions. Prompt diagnosis and timely intervention are essential in their management. In elderly patients with coexisting medical problems, endovascular procedures are preferred to avoid the risks of morbidity and mortality associated with general anesthesia and surgery. We report a case of a true saccular ...
Zhang Jingbo - - 2010
OBJECTIVE: To report the results of the Neuroform, Leo and Wingspan stents used to treat cerebral aneurysms in vessels of small caliber. MATERIALS AND METHODS: We reviewed 12 cases of wide-necked aneurysms treated with stent deployment into small cerebral vessels with diameter range from 1.0 to 2.5 mm. All stents ...
Metzner Anja - - 2010
OBJECTIVES: Transfemoral application of pulmonary heart valves has been studied for the past 10 years. Nevertheless, size restriction of percutaneous heart valved stents is still imminent. METHODS: In this study we implanted percutaneously a novel, low-profile polyurethane valved stent. Percutaneous implantation in pulmonary position was evaluated in 7 sheep. The ...
Drazin Doniel - - 2009
The pathogenesis and genetics of moyamoya disease (MMD) remain a mystery. Here we report a case of female Caucasian adult twins with similar presentations of bilateral MMD that were treated with different surgical modalities. One twin was treated with a bypass and remains event free (defined as either transient ischemic ...
Hislop S J - - 2009
A case series of 5 patients is presented assessing the utility of simulation case rehearsals of individual patients for carotid artery stenting on an endovascular simulator. Simulated and operative device dimensions were similar. Results of subjective surveys indicated that face and content validity were excellent. The simulations predicted difficulty with ...
K??lbel Tilo - - 2009
PURPOSE: To present a modification of the Zenith TX2 thoracic stent-graft that allows staged proximal deployment to improve apposition to the aortic wall. TECHNIQUE: Three standard Zenith TX2 thoracic stent-grafts and 3 modified versions were deployed in a glass model of the aortic arch. Deployment sequences were analyzed. In a ...
Rahman Afzalur - - 2009
We report a unique technique for retrieval of a coronary stent, embolized during percutaneous coronary intervention (PCI), using conventional angioplasty wires and angioplasty balloon catheters. In this case, the stent embolized into the distal left main and proximal left circumflex arteries. As the guide catheter and percutaneous coronary angioplasty (PTCA) ...
MINAR E - - 2009
Endovascular stent implantation was introduced to femoropopliteal procedures almost two decades ago. Initial results with balloon-expandable stainless steel stents and self expanding Elgiloy stents, however, were disappointing. In particular, recurrence rates after long-segment femoropopliteal stenting were rather high, in the range of 60% to 80% at 1 year. After years ...
Ioannou C V - - 2009
A variety of indications have made the use of double pigtail ureteral catheters routine in urological practice. Although side effects are frequent they are usually mild. We report a case of intravenous stent migration after simultaneous perforation of the left ureter and left common iliac vein during retrograde J-stent placement. ...
Pilgrim T - - 2009
Drug-eluting stents (DES) have reduced the risk of repeat revascularization procedures by 50-70% compared with bare metal stents across a wide range of lesion and patients subsets. Stent thrombosis is a rare but devastating adverse event, which results in abrupt closure of the treated artery with the incumbent risk of ...
Eggebrecht Holger - - 2009
PURPOSE: To present a novel, uncovered, self-expanding aortic stent for use as a thoracoabdominal stent-graft extension to improve distal flow in aortic dissections complicated by malperfusion syndrome and to enhance the remodeling process in the abdominal aorta after thoracic endovascular aortic repair. METHODS: This aortic prosthesis is a laser cut, ...
Mocco J - - 2009
The Warfarin-Aspirin Symptomatic Intracranial Disease study investigators demonstrated that medically managed patients with symptomatic intracranial stenosis experience a 7-11% annual stroke risk. Early treatment efforts utilized balloon-mounted coronary stents, which provided excellent angiographic results (postprocedure stenoses <10%), versus percutaneous transluminal angioplasty (PTA) alone (40%). However, the rigidity of balloon-mounted coronary ...
Ghazi Payam - - 2009
PURPOSE: To evaluate the safety and feasibility of self-expandable stents (OptiMed) for treatment of abdominal aortic stenosis in the situations in which the aortic stenosis locates near the origin of celiac, superior mesenteric, renal and inferior mesenteric arteries. METHODS: Five consecutive patients scheduled for endovascular treatment of abdominal aortic stenosis ...
Garg S - - 2009
The introduction of the coronary stent in 1986 was one of the most far-reaching changes in the practice of interventional cardiology since its inception in 1977. Despite all the benefits of the using a metallic drug eluting stent (DES), their limitations have generated interest towards biodegradable technology. These biodegradable stents, ...
Kiran Usha - - 2009
Anaesthesiologists are increasingly confronted with patients who had a recent coronary artery stent implantation and are on dual anti-platelet medication. Non cardiac surgery and most invasive procedures increase the risk of stent thrombosis especially when procedure is performed early after stent implantation. Anaesthesiologist faces the dilemma of stopping the antiplatelet ...
Choi Gilwoo - - 2009
To quantify in vivo deformations of the abdominal aorta and common iliac arteries (CIAs) caused by musculoskeletal motion. Seven healthy subjects (age 34+/-11 years, range 24-50) were imaged in the supine and fetal positions (hip flexion angle 134.0 degrees +/-9.7 degrees ) using contrast-enhanced magnetic resonance angiography. Longitudinal strain, twisting, ...
Motovska Zuzana - - 2010
The introduction of percutaneous coronary intervention (PCI) substantially changed the treatment of patients with coronary artery disease. Stent thrombosis is the most worrisome early complication in patients undergoing PCI. Therefore, antiplatelet therapy forms an integral component of treatment with intracoronary stent implantation. A multitude of randomized and observational studies have ...
Li Ming-Hua - - 2009
PURPOSE: To evaluate the flexibility and efficacy of the Willis covered stent in the treatment of distal internal carotid artery (DICA) aneurysms. MATERIALS AND METHODS: The study was approved by the authors' institutional review board, and the research was conducted by the authors' institution and the MicroPort Medical Company (Shanghai, ...
Formaglio M - - 2010
Cerebral venous and sinus thrombosis (CVT) is a rare but potentially alarming condition, which remains a diagnostic and therapeutic challenge. Endovascular procedure may be a therapeutic option when evolution is unfavourable despite medical treatment, but the use of stenting is rarely reported in CVT treatment. We report the case of ...
Han Seung Hwan - - 2009
Distal protection devices such as FilterWire EX have been widely used in carotid artery stenting, however, the large amount of atherothrombotic debris entrapped in the filter could reduce or stop antegrade flow. We present a case of pseudo-no-reflow phenomenon after postdilatation of the stent in a patient with asymptomatic carotid ...
Ozkan Ugur - - 2010
The aim of this study was to report technical details, procedure-related complications, and results of endovascular treatment in chronic iliac artery occlusion. Between 2001 and 2008, endovascular treatments of 127 chronic iliac artery occlusions in 118 patients (8 women and 110 men; mean age, 59 years) were retrospectively reviewed. The ...
Huang Qinghai - - 2009
Late stent thrombosis is an infrequent, but severe, complication after implantation of a drug-eluting stent. We report one such patient, a 69-year-old man with intracranial vertebral artery stenosis. He experienced very late stent thrombosis after discontinuation of clopidogrel therapy, about 16 months after the insertion of a Taxus Stent (Boston ...
Abularrage Christopher J - - 2010
Stent fracture is a rare complication after carotid angioplasty and stenting. Patient anatomy, stent design, and external forces may all be contributing risk factors. Treatment options include continued observation or reintervention by both endovascular and open techniques since patients are typically asymptomatic. We present a case of a 66-year-old male ...
Lettau M - - 2009
BACKGROUND AND PURPOSE: CT angiography (CTA) and MR angiography (MRA) are increasingly used methods for evaluation of stented vessel segments. Our aim was to compare CTA, contrast-enhanced MRA (CE-MRA) at 1.5T, and CE-MRA at 3T for the visualization of carotid artery stents and to define the best noninvasive imaging technique ...
Chakrabarti Santabhanu - - 2010
BACKGROUND: Stenting for aortic coarctation is known to be effective in the medium term. Aneurysm formation following stent implantation is a recognised complication. However, data regarding aortic wall injury and stent integrity following stent placement are sparse. OBJECTIVES: We report comprehensive clinical, echocardiographic and prospective CT follow-up data following stenting ...
Zinn Andrew - - 2009
The current standard in coronary artery stenting is dual antiplatelet therapy with aspirin and clopidogrel, with the duration of therapy primarily based on the use of bare metal or drug-eluting stents. The expanding patient population in whom oral anticoagulation and dual antiplatelet therapy may be indicated poses unique challenges in ...
Latif Faisal - - 2009
None of the currently used interventional techniques yield durable results for coronary bifurcation lesions. We successfully treated a patient with unprotected left main bifurcation disease using a side balloon stent technique with a drug-eluting stent (DES). This technique produced excellent immediate and long-term results.
Asif Arif - - 2009
Arterial stenoses in patients with arteriovenous dialysis access can create a variety of problems including access dysfunction, thrombosis, and hand ischemia. While percutaneous balloon angioplasty is largely successful in the management of arterial stenoses, elastic recoil can present a real predicament to this treatment. In this report, we present two ...
Ngow Harris - - 2009
Coronary artery stent dislodgement during angioplasty is a rare complication. Stent dislodgement was more frequent in the past when stents were manually crimped onto the balloon. Newer and improved balloon-mounted stents with better radio-opacity have reduced the incidence of stent dislodgement but do not completely eliminate it. We report a ...
Brar Somjot S - - 2009
AIMS: We sought to determine if outcomes differ between provisional (elective side branch stenting) compared to a routine two-stent strategy (mandatory side branch stenting) for the treatment of bifurcation stenoses of the coronary arteries using drug-eluting stents. METHODS AND RESULTS: We searched Medline, EMBASE, and the Cochrane library from January ...
Hashim Abdelazim - - 2009
Hepatic artery aneurysm (HAA) is rare with reported incidence of 0.02%. It accounts for approximately 12-20% of all visceral aneurysms. The reported risk of rupture ranges from 14% to 80% of all HAAs. Traditionally, HAA has been treated surgically or by transcatheter coil embolization. There are few published reports of ...
Oderich Gustavo S - - 2009
Patients with aneurysms with short or angulated necks and those with involvement of the renal, visceral, and hypogastric arteries may not be candidates for endovascular treatment using infrarenal stent graft. Fenestrated stent grafts with reinforced fenestrations permit the incorporation of the visceral and renal arteries into the endovascular repair enabling ...
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