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Results 651 - 700 of 2923
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Wong Geoffrey - - 2008
The goal of this study was to evaluate the ability of recombinant human thrombomodulin (rTM) to inhibit neointimal hyperplasia when bound to expanded polytetrafluoroethylene (ePTFE) stent grafts placed in a porcine balloon injured carotid artery model. The left carotid artery of male pigs, weighing 25 to 30 Kg, was injured ...
Kurimoto Yoshihiko - - 2008
BACKGROUND: Although the left subclavian artery (LSA) is simply covered to exclude distal aortic arch aneurysm during endovascular stent-grafting, this technique is potentially harmful. METHODS AND RESULTS: Between January 2001 and April 2005, 40 cases of stent-grafting were performed for distal aortic arch diseases. For all 31 elective cases, the ...
Yachia Daniel - - 2008
PURPOSE OF REVIEW: Conventional ureteral stents, which have been in use for almost 30 years, are undergoing several changes in materials, designs and purposes of use. RECENT FINDINGS: Recent advances in ureteroscopes reduced the numbers of double-J insertions. In addition, because of the frequent failures of the double-J stents in ...
Kim Joon-young - - 2008
To evaluate the potential utility of a self-expandable intratracheal nitinol stent with flared ends for the treatment of tracheal collapse in dogs, endotracheal stenting therapy was performed under fluoroscopic guidance in four dogs with severe tracheal collapse. During the 4 to 7 month followup, after stent implantation, clinical signs, including ...
Pasa Márcio Bastiani - - 2008
OBJECTIVE: To evaluate intimal thickening secondary to stent placement or to insertion of the delivery system without stent placement in pig carotid arteries. METHODS: Stents were placed in the right common carotid arteries of 7 pigs, and 7 other control pigs underwent only insertion of the delivery system without stent ...
Walsh Rowan - - 2008
A 10-day-old child with hypoplastic left heart syndrome (HLHS) underwent first-stage palliation for HLHS, Norwood procedure with a Sano modification, i.e., placement of a right ventricular to pulmonary artery (RV-PA) conduit. The patient developed progressively worsening systemic oxygen desaturation in the immediate postoperative period. Stenosis of the proximal RV-PA conduit ...
Perret Xavier - - 2008
Aberrant coronary arteries are frequently observed in patients presenting with Fallot's tetralogy (TOF). Before the complete surgical repair of the TOF, the percutaneously performed pulmonary trunk (PT) angioplasty is often performed in order to temporarily increase the pulmonary circulation, thus increasing the pulmonary vessel size, finally improving surgical outcome. This ...
Hernández-Antolín Rosa Ana - - 2008
A 2.5 x 32 mm Taxus Libert e stent was deployed at high pressure in the proximal right coronary artery (RCA) of a 71-year-old male patient, but the distal part of the lesion remained uncovered. A second stent (Driver 2.5 x 12 mm) could not be advanced through the first ...
Nordmeyer Johannes - - 2008
AIMS: Percutaneous pulmonary valve implantation (PPVI) is now an accepted treatment strategy for right ventricular (RV) outflow tract (RVOT) dysfunction in many European Heart Centres. We analysed the efficacy of repeat PPVI as a treatment modality for early device failure. METHODS AND RESULTS: Twenty patients underwent repeat PPVI for RVOT ...
Sharafuddin Melhem J - - 2008
Kissing stent reconstruction of the aortoiliac bifurcation is a widely used technique for the management of aortoiliac occlusive disease involving the aortic bifurcation or proximal common iliac arteries. New advances in delivery systems and stent design have enabled better anatomic results with kissing stenting. Long-term patency is generally excellent, although ...
Kelly Dominic - - 2008
Radial diagnostic angiography and percutaneous coronary intervention have been shown to be safe and feasible with fewer major complications in comparison with the femoral approach. Despite their safety profile, occasional vascular complications do still occur. We present a case of a brachial artery perforation treated successfully by the deployment of ...
Dibie Alain A Institut Mutualiste Montsouris, Paris, - - 2008
To evaluate the safety and long-term efficacy of a true dedicated bifurcation bare metal stent (DBS) for the treatment of bifurcation coronary artery lesions. Thirty-four patients were enrolled in this prospective multicentre study. The majority of culprit lesions were located on the left anterior descending artery/diagonal bifurcation (n=19) followed by ...
Seo Kwon Duk - - 2008
Carotid artery stenting is widely performed for extracranial carotid artery stenosis. In-stent thrombosis is a rare but potentially devastating complication. We present a case of acute in-stent thrombosis immediately following stent insertion and post-balloon dilatation in a 64-year-old male. Thrombosis was successfully treated by intravenous tirofiban, a glycoprotein IIb/IIIa receptor ...
Schulte Stefan - - 2008
This paper reports on the early and midterm results of endovascular treatment of acute carotid artery dissections, its specific problems, and its limitations. We encountered seven patients with symptomatic extracranial carotid artery dissection, three cases of which occurred after carotid endarterectomy, two after carotid angioplasty and stenting, and two after ...
Agostoni Pierfrancesco - - 2009
"StentBoost" is a new angiographic technique that allows improved angiographic visualization of stents deployed in coronary arteries, by enhancing the X-ray focus of the region where the stent is placed. Using this technique we were able to assess the deformation and the expansion of a stent deployed to treat a ...
Berrocal Daniel H - - 2008
BACKGROUND: It is not known whether overexpansion modifies stent recoil, symmetric distribution of struts, and neointimal hyperplasia. OBJECTIVES: The objectives were (a) to evaluate whether stent overexpansion modifies the geometric configuration of the stent in the arterial wall, (b) to determine the relationship between overexpansion and stent recoil, and (c) ...
Fischell Tim A - - 2008
BACKGROUND: The stenting of aorto-ostial lesions in the native coronary circulation, renal arteries, and saphenous vein grafts is technically challenging. METHODS: We report the first in the world use of the Ostial Protrade mark, a novel nitinol-based device, utilized in conjunction with standard stenting techniques to assist in the precise ...
Kim Minsuok M Department of Mechanical and Aerospace Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260, - - 2008
There is a general lack of quantitative understanding about how specific design features of endovascular stents (struts and mesh design, porosity) affect the hemodynamics in intracranial aneurysms. To shed light on this issue, we studied two commercial high-porosity stents (Tristar stent and Wallstent) in aneurysm models of varying vessel curvature ...
Tatekawa Yukihiro - - 2008
We report a new technique for treatment of tracheomalacia or tracheal compression caused by the innominate artery, utilized in two patients with neuromuscular disorders. Both cases developed a chest deformity in the setting of severe scoliosis. Computed chest tomography and fiberoptic bronchoscopy showed that the cervical trachea was compressed between ...
Bergqvist David - - 2008
PURPOSE: To evaluate the collective incidence of, and experience with, aortoenteric fistula after endovascular aortoiliac therapy. MATERIALS AND METHODS: A systematic literature research was performed to identify cases of aortoenteric fistulation after aortic stent-graft procedures or stent implantation. RESULTS: The review revealed 16 cases of aortoenteric fistulation after aortic stent-grafting ...
Bruschi Giuseppe - - 2008
We report the case of a 61-year-old man who was treated with percutaneous coronary intervention (PCI) for unstable angina. Seven days after the procedure, he voluntary suspended double anti-aggregant therapy and experienced acute coronary thrombotic occlusion. A repeat PCI procedure was undertaken but the stent and the balloon remained entrapped ...
Kaplan Sahin - - 2008
We report a case of restenosis following ostial stenting of the right coronary artery, with protrusion of the stent into the aorta. Despite multiple attempts, no wire could be advanced coaxially inside the stent. The solution was to pass a wire through the struts of the protruding stent and crush ...
Randall Jonathan - - 2008
A 20-year woman who presented with acute pancreatitis developed a pseudocyst that was successfully drained by endoscopic placement of a stent as a cystogastrostomy. The first stent used went fully into the cyst and was irretrievable. Two years later a computed tomography showed the stent lying anterior to the left ...
Klepczyk Lisa - - 2008
Endovascular modalities are being increasingly employed in the treatment of a variety of vascular diseases. With new technologies come novel complications, and one such complication unique to endovascular surgery is stent fracture. We present two cases of stent fracture following stenting of the superior mesenteric artery and discuss possible causes ...
Ozaki Kazuyuki - - 2008
A 69-year-old woman underwent percutaneous coronary intervention for a severe stenotic lesion in the bifurcation of the mid-left anterior descending artery and first diagonal branch. A single stent was implanted into the left anterior descending artery. After the stent strut was dilated by balloon inflation in the diagonal branch, dissection ...
Sun Zhonghua - - 2008
PURPOSE: To report the diagnostic value of computed tomographic (CT) virtual intravascular endoscopy (VIE) in the assessment of patients with abdominal aortic aneurysm (AAA) treated with fenestrated endovascular grafts. METHODS: Eight patients (7 men; mean age 76 years, range 70-82) with AAAs unsuitable for open surgery or conventional endovascular repair ...
Hussain Farrukh - - 2008
Stent detachment and loss from the balloon represents a dreaded complication of coronary angioplasty. Previously described techniques of stent retrieval include the distal small balloon technique, the wire braiding technique, the snare technique, the stent crush technique4 and a single report of retrieval with the PercuSurge distal embolic protection device. ...
Kölbel Tilo - - 2008
PURPOSE: To demonstrate the feasibility of a novel technique that modifies the configuration of a thoracic stent-graft after deployment to comply with the arch curvature. TECHNIQUE: The principle of a Bowden cable has been applied to direct a conventional thoracic stent-graft in situ after deployment. A suture placed at the ...
Molden Jaime - - 2008
Treatment of a coronary artery with a high burden of thrombus in the setting of myocardial infarction poses significant challenges to the operator. Furthermore, a high thrombus burden present in an abnormal aneurysmal artery poses an even greater obstacle. We report a unique case of a 30 year-old-male presenting with ...
Plich Michael - - 2008
PURPOSE: To describe a new technique for distal protection during stenting of a bifurcated renal artery using two simultaneous filter devices. CASE REPORT: A 70-year-old patient underwent angiography of a single functional kidney. Severe proximal, nonostial narrowing of an early bifurcated renal artery was found. Two AngioGuard filter protection devices ...
Zimpfer Daniel - - 2008
BACKGROUND: This study assessed the feasibility of stent graft treatment of ascending aortic dissections in a porcine in vitro model. METHODS: The entire thoracic aortic aorta including the supraaortic branches was harvested from 12 adult pigs and an intimal tear was artificially created. The aortic annulus was then sewn into ...
Ribichini Flavio - - 2008
The aim of the present study was to analyse the long-term histology and immunohistochemistry of the plaque composition and cellular infiltration of SVGs (saphenous vein grafts) containing metallic stents. Percutaneous interventions in SVGs have a worse long-term clinical outcome compared with stenting of coronary arteries. Whether the pathological features of ...
Hartung Olivier - - 2008
Iliac vein occlusive disease leads to 73% of rethrombosis that occurs after venous thrombectomy when left untreated. The goal of this study is to present our long-term results of stenting of iliocaval occlusive lesions persisting after surgical venous thrombectomy. From November 1995 to April 2007, 29 patients (19 women), with ...
Romagnoli Enrico E Emo Centro Cuore Columbus, Milan, - - 2008
In clinical practice, adequate stent deployment has an important effect on immediate and long-term results after percutaneous coronary interventions. In particular, suboptimal or incomplete stent expansion is associated with increased restenosis and target vessel revascularization rates and, especially with drug-eluting stents (DES), might also predispose to stent thrombosis. Notwithstanding the ...
Peregrin J H - - 2008
The purpose of this prospective study was to evaluate whether stent placement in infrapopliteal arteries is helpful in failed percutaneous transluminal angioplasty (PTA). Infrapopliteal PTA was performed in 70 arteries of 66 patients with chronic critical lower limb ischemia. The group comprised 55 males and 11 females, with an average ...
Shim Chi Young - - 2008
BACKGROUND: Endovascular techniques using various stent-graft systems are now available to treat aortic disease. Because stent-grafts need large-bore sheaths, arterial surgical cut-downs for access and closure are required. This study describes and reports the results of a percutaneous technique using multiple Perclose devices (Closer-S, 6 Fr) for large arteriotomy closure. ...
Duijm Lucien E M - - 2008
To determine the feasibility of endovascular treatment of inflow stenoses in arteriovenous fistulae (AVFs) through retrograde venous access catheterization. We included all 22 dysfunctional AVFs with arterial inflow stenoses at access imaging between January 2002 and September 2006. Following retrograde venous access puncture, an interventional radiologist intended to cross the ...
Hecht Harvey S - - 2008
The purpose of this study was to evaluate the accuracy of detector computed tomographic angiographic qualitative and quantitative analyses for the detection of in-stent restenosis (ISR) Previous studies have used qualitative analyses exclusively and have excluded "unevaluable" stents. Multidetector computed tomographic angiography (MDCT) was performed before quantitative coronary angiography in ...
Nowakowski Kris - - 2008
This case report and subsequent literature review describes the management difficulties in a patient who developed abciximab-induced thrombocytopenia and gastrointestinal bleeding. Abciximab was used to treat the no-reflow phenomenon, which occurred during insertion of three sequential Taxus coronary artery stents. Resuscitation of this bleeding patient with fluids, blood, and platelet ...
Santoro Giuseppe - - 2008
Bilateral arterial ducts serving nonconfluent pulmonary arteries is a very rare pattern of pulmonary blood flow in congenital heart disease with pulmonary atresia. In this setting, neonatal ductal closure might result in abrupt pulmonary hypoperfusion and life-threatening systemic hypoxia, thereby indicating emergent surgical palliation or repair. However, percutaneous arterial duct ...
Periard D - - 2008
Delayed stent fracture has been observed in many different arteries and may represent a risk factor for restenosis. We describe the case of a delayed rupture of an endovascular brachiocephalic trunk stent. The complete fracture allowed a fragment to migrate distally and tilt, resulting in a hemodynamic pattern similar to ...
Krol Katharine L - - 2008
PURPOSE: To evaluate the safety and effectiveness of the Zilver vascular stent in the treatment of de novo or restenotic lesions in the external and common iliac arteries. MATERIALS AND METHODS: Regardless of the results of an initial percutaneous transluminal angioplasty (PTA), 151 consecutive patients were implanted with Zilver vascular ...
Liou Tong-Miin - - 2008
Computation and experiment have been complementarily performed to study the fluid flow inside a stented lateral aneurysm anchored on the straight parent vessel. The implicit solver was based on the time-dependent incompressible Navier-Stokes equations of laminar flow. Solutions were generated by a cell-center finite-volume method that used second-order upwind and ...
Vanhoenacker Piet K - - 2008
BACKGROUND: Multi-detector computed tomography angiography (MDCTA)of the coronary arteries after stenting has been evaluated in multiple studies.The purpose of this study was to perform a structured review and meta-analysis of the diagnostic performance of MDCTA for the detection of in-stent restenosis in the coronary arteries. METHODS: A Pubmed and manual ...
Carlino Mauro - - 2008
OBJECTIVES: To assess the utilization of microinjection of contrast for the recanalization of chronic total occlusions (CTO). BACKGROUND: Microchannels in CTOs have been considered important conduits for CTO crossing, utilizing dedicated guidewires. We postulated that microinjection of contrast immediately distal to the proximal cap of the CTO could identify and ...
Brunkwall J - - 2008
It is now more than 20 years since the first report of stent graft insertion in the human arterial system was published. The first "homemade" devices proved that the technique was possible but could not show any durability. Using these devices, it was possible to get a good seal but ...
Yin Tieying - - 2008
A patient was fitted with an Anaconda stent graft for which there was a persistent type II endoleak. Two subsequent attempts at embolization were unable to resolve the endoleak. The diameter of the aneurysm varied initially from 5.5 cm in diameter down to 4.8 cm but then later re-dilated to ...
Thiessen Rennae - - 2008
Fibrosing mediastinitis is a rare benign condition, which can cause compression of the pulmonary or systemic vessels, tracheobronchial tree, coronary arteries or esophagus, leading to disabling clinical symptoms and even death. The case of a 26-year-old woman who presented with dyspnea is described. She was found to have 80% stenosis ...
Hoppe Hanno - - 2008
PURPOSE: To report the authors' initial experience with carotid artery stent-grafts in a comparatively large patient series for the treatment of acute bleeding and impending rupture or the prevention of distal embolization. MATERIALS AND METHODS: This retrospective study was approved by the institutional review boards and performed according to HIPPA ...
Gervaso Francesca - - 2008
In recent years, computational structural analyses have emerged as important tools to investigate the mechanical response of stent placement into arterial walls. Although most coronary stents are expanded by inflating a polymeric balloon, realistic computational balloon models have been introduced only recently. In the present study, the finite element method ...
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