Search Results
Results 251 - 300 of 2927
< 1 2 3 4 5 6 7 8 9 10 11 >
Flores A - - 2009
Carotid artery stenting (CAS) remains under scrutiny because of the controversial results of major trials that compared it with carotid endarterectomy. However, the question of how the results of carotid stenting are influenced by the access technique and cerebral protection methods has not been properly addressed in any trial. Most ...
Santoro Giuseppe - - 2009
OBJECTIVES: The aim of this study was to assess the pulmonary artery (PA) growth following arterial duct (AD) stenting in neonates with congenital heart disease (CHD) with duct-dependent pulmonary circulation. BACKGROUND: AD stenting is increasingly deemed as a reliable alternative to surgical shunt in CHD with duct-dependent pulmonary circulation. Allowing ...
Zomer A Carla - - 2009
In the present report, we describe a unique case of very late stent thrombosis with a bare-metal stent that occurred more than a decade after stent implantation. Potential explanations for the late stent thrombosis are non-compliance to aspirin, late acquired malapposition of the stent, progression of atherosclerosis or in-stent restenosis. ...
Bandyk D F - - 2009
Intravascular ultrasound (IVUS) provides high-resolution vessel imaging and has been shown to improve clinical outcomes when used to assess the technical result of peripheral angioplasty procedures. Our vascular group compared anatomic and clinical outcomes of carotid artery stent-angioplasty (CAS) performed with angiogram monitoring alone, or in combination with IVUS imaging ...
De Rango Paola - - 2009
PURPOSE: To evaluate the role of aortic stent-graft implantation in managing aortobronchial fistula (ABF). METHODS: A search of the Medline, EMBASE, and Cochrane databases for studies reporting on ABF treated with stent-grafts from 1996 to 2008 retrieved 44 articles with data on 82 ABFs. Most (57 ABFs) were published in ...
Zavalloni Dennis - - 2009
Coronary stent thrombosis is a rare but life-threatening event after percutaneous revascularization. We report an in-vivo documentation of the pathologic process in the setting of a very late thrombosis within a bare-metal stent, showing eosinophil infiltrates. Interestingly, our case indicates that eosinophil infiltrates might not be a peculiarity of late ...
M?ller-H?lsbeck S - - 2009
Current carotid stent designs and their attributes like scaffolding to reduce plaque prolapses and embolization, flexibility, adaptability and conformability to the vessel vary largely. Knowing that differences in behaviour due to stent design exist, especially due to the open cell design (which show high flexibility and therefore adaptability to the ...
Xu G G Departments of Neurology (GX, XL, XF, QY) and Radiology (LZ), Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu Province, China.Departments of Neurology (GX, XL, XF, QY) and Radiology (LZ), Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu Province, China - These two authors contributed equally to this work - - - 2009
In-stent restenosis or occlusion has been frequently reported as a complication after angioplasty and stenting in vertebral arteries. Reopening chronic in-stent occlusion in cervical arteries with endovascular techniques has not been reported. Here we describe a case with stent implantation in the origin of right vertebral artery. The stent was ...
Abdelkarim Murrad J - - 2010
BACKGROUND: Many studies have used multidetector computed tomography (MDCT) angiography to evaluate coronary stents qualitatively but not quantitatively. OBJECTIVES: This study sought to validate a method of quantitatively evaluating stent patency by using 64-row compared with invasive coronary angiography (ICA) and to evaluate the stent size threshold of MDCT in ...
Shaw Eric Scot - - 2010
We present findings from a 59-year-old male patient who presented with coronary artery disease and refractory angina. Ten years prior, the patient had been implanted with 5 bare metal stents (BMS); he arrived with non-specific ST-T wave abnormalities. Angiographic data revealed a totally occluded right coronary artery at the level ...
Schönwald U G - - 2011
Stents are commonly used for the treatment of occlusive artery diseases in carotid arteries. Today, there is a controversial discussion as to whether duplex sonography (DS) displays blood velocities (BV) that are too high in stented areas. The goal of this study was to evaluate the effect of stenting on ...
Moszura T - - 2010
A 5-year-old child with hypoplastic left heart syndrome (HLHS) was noted to have left pulmonary artery stenosis after Glenn shunt placement. Therefore, a stent was implanted into the left pulmonary artery to relieve stenosis. After redilatation of the pulmonary artery stent, wheezing, fatigue, asymmetric bronchial sound, and desaturation was noted. ...
Hermawan Hendra - - 2010
Biodegradable stents have shown their potential to be a valid alternative for the treatment of coronary artery occlusion. This new class of stents requires materials having excellent mechanical properties and controllable degradation behaviour without inducing toxicological problems. The properties of the currently considered gold standard material for stents, stainless steel ...
Lettau Michael - - 2010
CT angiography (CTA) and MR angiography (MRA) are increasingly used methods for evaluation of stented vessel segments. The purpose of this study was to compare CTA, contrast-enhanced MRA (CEMRA) at 1.5 T, and CEMRA at 3 T for the visualization of carotid artery stents and to define the best noninvasive ...
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, ...
< 1 2 3 4 5 6 7 8 9 10 11 >