Search Results
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Mougey Adam - - 2008
Self-expanding metal stents (SEMS) are currently the standard for palliation of malignant dysphagia. Innovations in stent technology, including the advent of retrievable stents and the development of self-expanding plastic stents (SEPS), show promise to increase the possible applications for esophageal stents. This article reviews the indications and usage of both ...
Aziz Shahid - - 2008
Adjunctive balloon postdilatation following stent deployment is often used to optimize stent expansion. However, the benefit of this strategy with modern stent delivery systems is not known. We investigated angiographic and procedural factors associated with a favorable response to postdilatation after coronary stent deployment. METHODS: We performed a prospective study ...
Lee Shin-Eun - - 2008
Previous randomized trials have shown that drug-eluting stents (DES) are superior to bare-metal stents in reducing the need for target lesion revascularization, but safety issues with DES have recently been raised. We report a rare case of very late stent thrombosis 35 months after sirolimus-eluting stent implantation associated with delayed ...
Khatri Ismail A - - 2008
OBJECTIVE: Carotid artery stenting (CAS) is emerging as an alternative procedure to carotid endarterectomy. It is mostly performed in patients with high surgical risk. Many centers in Pakistan have started CAS. We present results of 1st twelve patients who underwent carotid artery stenting at Shifa International Hospital, Islamabad. METHODS: Our ...
Butera Gianfranco - - 2008
OBJECTIVE: We sought to evaluate the role of percutaneous techniques in the treatment of ductal origin of a distal pulmonary artery (PA) in low-weight infants. BACKGROUND: Various surgical approaches have been proposed, however, they are highly challenging and risky in neonates. METHODS: We treated 5 infants weighing < 3 kg ...
Leonardi M - - 2008
Summary: Endovascular stenting is a consolidated alternative to thrombendarterectomy in the treatment of extracranial carotid artery atheromasic stenosis. The most common complication of stenting is a distal embolism causing clinically silent orsymptomatic cerebral ischaemia. To prevent this complication distal embolism protection devices are often used but their effectiveness remains unsettled. ...
Pumar J M - - 2008
We present the case of a patient with a fusiform aneurysm of the M1 segment of the middle cerebral artery (MCA) in which endovascular stent placement without coiling was performed. A 3.5-mm x 25-mm LEO self-expanding stent was deployed along the fusiform aneurysm of the horizontal MCA M1 segment. Digital ...
Radaelli A G - - 2008
This paper presents the results of the Virtual Intracranial Stenting Challenge (VISC) 2007, an international initiative whose aim was to establish the reproducibility of state-of-the-art haemodynamical simulation techniques in subject-specific stented models of intracranial aneurysms (IAs). IAs are pathological dilatations of the cerebral artery walls, which are associated with high ...
Liou Tong-Miin - - 2008
Flow visualization, particle image velocimetry and numerical computation have been complementarily performed to study the fluid flow inside a stented lateral aneurysm. The curved afferent vessel had an inner diameter of 5 mm. The diameters of the aneurysmal orifice, neck and fundus were 7 mm, 5 mm and 7.5 mm, ...
Papafaklis Michail I - - 2009
BACKGROUND: The association of shear stress (SS) with in-stent restenosis after bare metal stenting is not clear. We investigated the significance of SS on predicting areas with neointima thickness (NT) in humans and the effect of vascular brachytherapy (VBT) following coronary artery stenting on the relationship of SS with NT. ...
Zaidat Osama O - - 2008
BACKGROUND AND PURPOSE: Rapid and safe recanalization of occluded intracranial arteries in acute ischemic stroke (AIS) is challenging. Newly available self-expanding intracranial atherosclerotic stents (SEIS), which can be deployed rapidly and safely, make acute stenting an option for treating AIS. We present the feasibility of this technique. METHODS: A retrospective ...
Mehilli Julinda - - 2008
AIMS: The objective of this study was to assess the non-inferiority, in terms of anti-restenotic efficacy, of both biodegradable-polymer (BP) and polymer-free (PF) stents compared with permanent-polymer rapamycin-eluting (PP; Cypher) stent. METHODS AND RESULTS: Patients with de novo coronary lesions in native vessels were randomly assigned to receive a BP ...
Qureshi Adnan I - - 2009
OBJECTIVE: To report our initial experience in setting up a neuroendovascular service in a university-based comprehensive stroke center. METHODS: We determined the rates of referral path, procedural type, and independently adjudicated 1-month outcomes (actual rates) in first 150 procedures (120 patients) and subsequently compared with rates derived from pertinent clinical ...
Raju S - - 2008
BACKGROUND: Cellulitis, often recurrent is a common complication of severe chronic venous disease (CVD) when dermatitis or ulcer is present. The skin breakdown obviously provides easy entry for bacteria but other factors such as oedema and lymphatic dysfunction likely play a role in pathogenesis as well. An iliac obstructive lesion ...
Chang Ruey-Sheng - - 2008
OBJECTIVE: The purpose of this study was to review our experience with fluoroscopically guided retrograde exchange of ureteral stents in women. MATERIALS AND METHODS: During a 48-month period, 28 women (age range, 38-76 years) were referred to our department for retrograde exchange of a ureteral stent. The causes of urinary ...
Baron Todd H - - 2008
Expandable stents have now become accepted for the relief of malignant obstruction throughout the GI tract and biliary system. Almost all expandable stents are composed of metal. More recently, an expandable plastic stent has been developed for the treatment of benign esophageal conditions. The clinical response to these devices is ...
Lloyd Pamela G - - 2008
Leukemia inhibitory factor (LIF), an IL-6 class cytokine, is reported to be antiatherosclerotic. Thus, we hypothesized that LIF expression might be altered during in-stent neointimal hyperplasia. Ossabaw miniature swine, a unique large-animal model of metabolic syndrome and cardiovascular disease, were used for these studies. Bare-metal stents were deployed in the ...
Divani Afshin A - - 2008
PURPOSE: To compare the quantities of emboli dislodged during percutaneous transluminal angioplasty/stenting in the vertebral artery (VA) with those released during stent placement in the internal carotid artery (ICA). METHODS: Macroscopic images of distal protection devices (DPD) used during 30 stent procedures in 16 ICAs (11 men; mean age 64.6+/-10.6 ...
Latib Azeem - - 2008
The percutaneous treatment of coronary bifurcations has moved past an important milestone in that the 1- versus 2-stent debate appears to have been resolved. The provisional approach of implanting one stent on the main branch should be the default approach in most bifurcations lesions. Selection of the most appropriate strategy ...
Scurr James R H - - 2008
PURPOSE: To investigate in an in vitro model the ability of different covered and uncovered stents to resist displacement/migration of a fenestrated stent-graft. METHODS: Three different types (2 covered, 1 bare) of commonly used 7-mm balloon-expandable stainless steel stents (Jostent, Advanta V12, and Palmaz Genesis) were investigated in a testing ...
Aikawa Hiroshi - - 2008
Changes in the location and length of the Wallstent RP during carotid artery stenting (CAS) were evaluated using intraoperative videos of 28 patients with carotid artery stenosis who underwent CAS with a 10/20 mm Wallstent RP to determine the appropriate stent placement. The stent was deployed after its midpoint was ...
Ashikaga Takashi - - 2008
This is a report of a case in which stent delivery to the lesion location proved difficult because of severely calcified and tortuous proximal vasculature. Efforts to deliver a stent using a buddy wire, anchoring technique and five-in-seven guiding system were unsuccessful, whereas an aspiration catheter enabled stent delivery to ...
Aqel Raed A - - 2008
BACKGROUND: Renal artery stent restenosis remains a significant impediment that in part is attributed to suboptimal stent deployment. We tested the hypothesis that optimal stent deployment during renal artery interventions can be achieved using the Metricath (MC) system, a balloon-catheter sizing device. METHODS: The MC low-pressure balloon derives accurate vessel ...
Kawarada Osami - - 2008
Stent-supported angioplasty has emerged as an effective alternative to distal bypass for infrapopliteal artery disease. This treatment has been mainly employed in the tibial and peroneal arteries. However, the pedal artery below the ankle is the final frontier for catheter intervention. Here, we describe the utility of dorsalis pedis artery ...
Morino Yoshihiro - - 2008
BACKGROUND: Final kissing balloon technique (KBT) is known to alter long-term clinical outcomes for treatment of bifurcated coronary lesions. However, determination of adequate diameters of the 2 balloons remains difficult because of lack of a working index. METHODS AND RESULTS: Twenty-one cases of left main (LM)-related bifurcated lesions, treated with ...
Rahman Nasir - - 2008
Coronary stent fractures are very rare. The predisposing factors for stent fractures are excessive postdilatation, overlapping stents and a hinge site in a tortuous coronary artery. We report a case of very late (after 699 days), displaced, sirolimus-eluting stent fracture deployed at nominal pressures without postdilatation and at a non-hinge ...
Canaud Ludovic - - 2008
PURPOSE: To assess the fixation of 4 commercially available thoracic stent-grafts as a function of oversizing and increasing aortic arch angulation. METHODS: A benchtop pulsatile flow model was devised to test stent-graft anchorage in a 2-cm-long proximal landing zone at varying landing zone angles (70 degrees to 140 degrees ) ...
Modarai B - - 2008
A 66-year-old man underwent an anterior resection for carcinoma at the rectosigmoid junction. Three months later, a tight stricture developed proximal to the anastomosis. This was treated with a self-expanding metallic stent. Over the next few months, the stent fractured and a fistula developed between the site of anastomic stricture ...
Gaitonde Krishnanath - - 2008
PURPOSE: We describe a novel technique of ureteral Double-J stent placement during laparoscopic pyeloplasty. METHODS: A ureteropelvic junction (UPJ) occlusion balloon catheter is inserted retrograde into the ureter cystoscopically, under fluoroscopic guidance. Before insertion, a Foley catheter is calibrated and marked to indicate the point on its external surface to ...
Aikawa Hiroshi - - 2008
An 82-year-old man with an asymptomatic left high-grade carotid stenosis was treated with carotid artery stenting (CAS) under distal protection. The procedure consisted with predilation with a 5 x 40 mm percutaneous transluminal angioplasty (PTA) balloon, deployment of a 10 x 20 mm self-expandable stent, post-dilation with a 7 x ...
Misra Praphul - - 2008
This study was designed to determine whether red-cell oxidative stress status and antioxidant enzyme levels can serve as markers in patients predisposed to in-stent stenosis. Blood was collected from patient groups undergoing coronary angiography for chest pain evaluation, namely, group A (without coronary artery disease), group B (previous coronary stents ...
Daugherty W P - - 2008
This report describes the cases of 2 patients with failed retrieval of an AngioGuard distal protection device after carotid stent placement with rescue retrieval by use of a vertebral catheter. An AngioGuard was deployed before carotid angioplasty and stent placement. Attempted removal of the device with the provided recapture sheath ...
Nikanorov Alexander - - 2008
The use of intravascular stents in the superficial femoral artery (SFA) continues to be controversial due to the potential for compression and fracture in the tortuous physical environment of the adductor canal. The purpose of this study was to (1) characterize the types and ranges of stent distortion theoretically produced ...
Siegenthaler Michael P - - 2008
OBJECTIVE: Dilatation of the aorta at the landing zone site may be exaggerated by the radial force of stent grafts potentially limiting long-term results of endovascular therapy. We evaluated growth patterns and morphology of the thoracic aorta in young piglets after thoracic stent-graft placement. METHODS: Eight domestic piglets (37+/-2 kg) ...
Tedeschi Carlo - - 2008
BACKGROUND: The aim of the present study was to assess the in-stent restenosis and occlusion of coronary artery stents by multislice computed tomography (MSCT) compared with conventional coronary angiography in patients with atypical chest pain and not practicable/non-conclusive stress test. METHODS: Between December 2004 and March 2006, 81 patients were ...
Katsinelos Panagiotis - - 2008
BACKGROUND: Endoscopic stent insertion is the optimum method of palliation for malignant biliary obstruction. Various types of self-expanding metal stents have been introduced in the market. Whether one type of stents is superior to the others in terms of stent patency remains undefined. GOALS: This randomized trial compared 2 uncovered ...
Lubicz Boris - - 2008
OBJECTIVE: Stent-assisted coiling is an accepted endovascular treatment (EVT) for complex intracranial aneurysms. The Enterprise self-expandable stent (Cordis, Miami Lakes, FL) is a new retractable stent that is delivered via a conventional coiling catheter to potentially circumvent the limitations of other stents. The aim of this study was to evaluate ...
Kay Joseph D - - 2008
Percutaneous stenting of both native and recurrent coarctation of the aorta has become an acceptable alternative to surgical repair in most centers throughout the world. Severe complications such as aortic rupture, dissection, and late pseudo aneurysm formation are rare but worrisome complications. In many countries, commercially available balloon expandable covered ...
Vanderbrink Brian A - - 2008
Ureteral stents and nephrostomy tubes have been used extensively in urology. Attendant to their use are their associated morbidities, such as pain, infection, and encrustation. We review the literature on the subject of the encrusted stents and drainage catheters, discuss the risk factors for encrustation, and describe the endourologic evaluation ...
Wang Jian B - - 2008
OBJECTIVE: To evaluate the efficacy of endovascular treatment of giant intracranial aneurysms with Willis covered stents (Micro-Port, Shanghai, China). CLINICAL PRESENTATION: The endovascular treatment of two cases of giant intracranial aneurysm was successfully accomplished by the placement of Willis covered stents specially designed for intracranial use. Both patients presented with ...
Yilmazkaya Bayram - - 2008
BACKGROUND: In-stent stenosis remains the major disadvantage of coronary interventions. Extensive applications of the intracardiac devices especially involving long segments of coronary arteries have resulted in an increase in the number of cases of in-stent stenosis. That may require aggressive surgical approaches. METHODS: Between June 2006 and October 2007, 7 ...
Akiyama Yasuhiko - - 2008
In-stent stenosis is a possible long-term complication of carotid artery stenting. A simple and safe technique of cutting balloon angioplasty is described for carotid in-stent stenosis. The stented vessel is imaged by three-dimensional (3D) rotational angiography, the acquired projection images are transferred to a workstation, and the stenotic lesion and ...
Holfeld Johannes - - 2008
We report 2 patients who were referred for treatment of hemodynamically significant symptomatic stenosis of the aorta at the thoracoabdominal transition (coral reef aorta) that was causing abdominal angina and intermittent claudication. Both patients underwent successful transfemoral endovascular stent-graft placement and are free of symptoms, with regular findings at 6-month ...
Hussain Farrukh - - 2008
The crush and "mini-crush" techniques have been described previously for complex coronary bifurcation intervention. Typically, the single stent technique, with or without final kissing balloon inflation, has been preferred over the 2-stent method, whenever possible, to minimize stent length or stent overlap. The multiple 2-stent techniques need to be utilized, ...
Hoit Daniel A - - 2008
OBJECTIVE: Endovascular stent graft (SG) deployment offers a useful vessel-preserving strategy for vascular wall lesions such as pseudoaneurysms and fistulae. Although deployment of expanded polytetrafluoro-ethylene-covered SGs within the carotid and vertebral arteries is technically feasible, data on long-term efficacy, safety, and patency rate remain sparse. METHODS: Six patients with traumatic ...
Kotsar Andres - - 2008
PURPOSE: The biodegradable PLGA (a copolymer of L-lactide and glycolide) urethral stent with a spiral configuration has been used clinically for the prevention of postoperative urinary retention after different types of thermal therapy for benign prostatic hyperplasia. A new braiding pattern for this stent has recently been developed by our ...
Stefanadis Christodoulos - - 2008
The detection of atheromatous lesions in patients with coronary artery disease is related to neovascularisation, since it is associated with the presence of a dense network of vasa vasorum in the vascular wall. The increased density of vasa vasorum causes destabilisation of the atheromatous plaque. The safety and efficacy of ...
Mayer Thomas E - - 2009
The purpose of this study was to shorten and simplify the procedure of filter retrieval after carotid stenting with cerebral protecting devices. We propose a retrieval method with a soft-tip guiding catheter, which eliminates the step of balloon exchange and introduction of a retriever catheter for the protection filter. The ...
Shimamoto Takeshi - - 2009
Crawford type II thoracoabdominal aortic aneurysm (TAAA) secondary to chronic dissection was successfully treated with hybrid therapy comprising surgical visceral reconstruction and dual Inoue stent graft implantation. The proximal single-branched Inoue stent graft effectively sealed the entry located near the left subclavian artery and simultaneously excluded the TAAA, while the ...
Peluso J P P - - 2008
BACKGROUND AND PURPOSE: Stent systems for intracranial use are continuously improved. We report our initial experience using a new self-expanding easy-to-place nitinol stent (Enterprise) in the treatment of wide-neck intracranial aneurysms. MATERIALS AND METHODS: Between January and October 2007, 16 aneurysms in 15 patients were treated with stent assistance. Aneurysm ...
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