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Results 201 - 250 of 2927
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Tsetis Dimitrios - - 2010
Endovascular repair of femoral arterial access complications is nowadays the treatment of choice in a group of patients who cannot tolerate vascular reconstruction and bleeding due to advanced cardiovascular disease. Endovascular procedures can be performed under local anesthesia, are well tolerated by the patient, and are associated with a short ...
Bruckheimer Elchanan - - 2010
OBJECTIVES: To report on the early results of treatment of coarctation of the aorta by dilation with a new polytetrafluoroethylene covered stent. BACKGROUND: Transcatheter dilation of aortic coarctation carries the risk of aneurysm or rupture. Covered stent implantation reduces this risk but requires a large delivery system. The Advanta V12 ...
Gastaldi Dario - - 2010
The most common approach to treat atherosclerosis in coronary bifurcations is the provisional side-branch (PSB) stenting, which consists sequentially of the insertion of a stent in the main branch (MB) of the bifurcation and a dilatation of the side branch (SB) passing through the struts of the stent at the ...
Gaughen J R JR - - 2010
BACKGROUND AND PURPOSE: Blister aneurysms of the supraclinoid ICA represent a rare but well-documented cause of subarachnoid hemorrhage. These aneurysms are difficult to detect, and their surgical treatment is challenging, with high morbidity and mortality rates. The reports currently in the literature that describe the surgical and endovascular treatment of ...
Anand Girija - - 2011
Migration of superior vena cava (SVC) stents is a well-recognised complication of their deployment, and numerous strategies exist for their retrieval. To our knowledge, only three cases of migration of an SVC stent to the pulmonary vasculature have previously been reported. None of these patients developed complications that resulted in ...
Hyvelin Jean-Marc - - 2010
The introduction of drug-eluting stents (DES) has largely added benefit to the percutaneous coronary intervention. Questions about the long-term safety of DES have been raised, however, particularly with respect to late stent thrombosis. Research efforts are now being directed toward therapeutics that can impede smooth muscle proliferation and promote vascular ...
Yokouchi Yuki - - 2010
The patient was a 40-year-old Japanese woman. At 37 years of age she underwent stent implantation in LAD#7 for an acute myocardial infarction. Subsequently, coronary intervention was performed four times because of occlusion of the stent. Sudden death occurred at 40 years of age due to ventricular tachycardia. Clinically, the ...
Patel R A G - - 2010
Patient selection and a thorough understanding of the technical aspects of percutaneous transluminal renal artery stent placement (PTRS) are paramount to obtaining optimal outcomes. The purpose of this paper is to review renal artery angiography and stent placement techniques. Tips and tricks for successful procedural outcome are described. The potential ...
Chung Sang-Hoon - - 2010
PURPOSE: To determine factors affecting the ability of 64-multislice computed tomography (MSCT) to detect, assess, and accurately diagnose significant coronary arterial in-stent restenosis (ISR). MATERIALS AND METHODS: The institutional review board approved this study and waived informed consent. Sixty patients underwent CT coronary angiography using 64-MSCT, after implantation of coronary ...
Gordon Brent M - - 2010
Atrium expanded polytetrafluoroethylene covered stents were implanted in the stenotic pulmonary veins (n = 5) of three patients. Use of this device was feasible in infants and the procedure was well-tolerated without major complications. The majority (4/5) of covered stents remained patent for at least 3 months after implantation. Stents ...
Peeters P - - 2010
Several limitations inherent to the implantation of a metallic device, such as the occurrence of in-stent re-stenosis, in an arterial lumen intuitively explain the interest for developing bio-absorbable stents. Two main types of bio-absorbable stents currently exist: polymer stents and metallic stents. To date, no studies with bio-absorbable stents have ...
Hussain Farrukh - - 2010
Coronary stent dislodgement and loss carries significant morbidity and risk of infarction and thrombosis if left untreated. There have been multiple previous techniques for stent retrieval or deployment after stent loss including wire braiding, distal small balloon retrieval technique, snare use, forceps in large vessels and the stent crush technique. ...
Roguin Ariel - - 2010
BACKGROUND: The majority of procedural training especially in interventional cardiology, still occurs on patients with direct mentoring by experienced physicians during an actual clinical procedure. In recent years there is an increase use of simulators especially for carotid artery stenting. However, most simulators use "generic" predefined cases. METHODS AND RESULT: ...
Ghandehari Kavian - - 2010
Angioplasty and stenting of the cervicocerebral arteries is a novel treatment for atherosclerotic stenosis, which has periprocedural complications. Data were collected prospectively from 2007 to 2009 in a multicenter cohort of patients undergoing interventions for cervicocerebral stenosis. Retrospective assessment of the 2003-2006 archives of the same interventionists and a review ...
Burzotta Francesco - - 2010
AIMS: Provisional stenting with drug-eluting-stents is actually adopted to treat most of bifurcated lesions. A major drawback of this technique is the risk of side-branch (SB) closure after main vessel (MV) stenting. METHODS AND RESULTS: We set-up, and bench tested, a novel technique for SB protection based on the placement ...
Formichi Maxime - - 2010
To evaluate videoscopic ultrasonography (VUS) as a guiding method for endovascular aortic stent placement. Eight pigs were prepared for a videoscopic approach to the abdominal aorta. Through the trocarts, a VUS probe was placed in contact with the infrarenal aorta and iliacs. In the first 4 animals, a standard surgical ...
Canan Timothy - - 2010
Stent fracture has been observed in noncoronary vessels, especially in the superficial femoral and popliteal arteries and with bare metal stents in saphenous vein grafts of coronary arteries. Since the introduction of drug-eluting stents, stent fractures have also been reported in small studies and case reports. We reviewed these publications ...
Catakoglu Alp Burak - - 2010
AIMS: We report a new stenting technique which was employed in 12 patients to treat coronary bifurcation lesions. METHODS AND RESULTS: A stent is positioned in the main vessel together with a balloon in the side branch, which is positioned slightly proximal to the main vessel stent that also has ...
Zhu Yue-Qi - - 2010
PURPOSE: To compare the use of the Willis stent-graft versus coil embolization for complicated aneurysms in the cisternal segment of the internal carotid artery (ICA). METHODS: Thirty-four patients (19 women; mean age 46.7+/-16.8 years, range 3-79) with 36 complicated aneurysms were treated either by Willis covered stents (n = 19) ...
Pavlisa Goran - - 2010
BACKGROUND: Intracranial aneurysms may be difficult for endovascular treatment due to size, fusiform shape, or wide neck. In such patients, intracranial stents are used to support the coils in the aneurysm sac, or they may be used as a sole stenting technique to divert the blood flow without coils. The ...
Park Ki-Hyuk - - 2010
To describe variations in the shape, orientation, and length of the branches of multi-branched thoracoabdominal stent grafts. The branches were constructed in situ by attaching a covered stent (Fluency Plus Tracheobronchial Stent Graft; Bard Peripheral Vascular, Tempe, Ariz) to each of four caudally-oriented cuffs on custom-made stent grafts. Pre- and ...
Zenteno Marco - - 2010
The sole stenting technique has emerged as a new tool for the management of intracranial aneurysms. However, several concerns have emerged about the long-term behavior of intracranial stents, particularly their safety and efficacy. We present the first case of an intracranial aneurysm intentionally treated with the sole stenting technique. After ...
Xiong Guanglei - - 2010
Image-based computational fluid dynamics provides great promise for evaluation of vascular devices and assessment of surgical procedures. However, many previous studies employ idealized arterial and device models or patient-specific models with a limited number of cases, since the model construction process is tedious and time-consuming. Moreover, in contrast to retrospective ...
Moszura Tomasz - - 2010
BACKGROUND: Pulmonary artery stenting without a long vascular sheath has a special significance, particularly for children with low body weight. Using only a short sheath often permits the implantion of a stent of the correct size; moreover, it improves access to peripherally located stenoses. The aim of this paper is ...
Milewski Krzysztof - - 2010
BACKGROUND: The high radial force and durability of cobalt-chromium alloy enable the construction of low-profile stents with thin struts, which improves their elasticity and may play a key role in reducing the incidence of neointimal hyperplasia as well as allow faster endothelialization. The aim of this study was to compare ...
Taha Mahmoud M - - 2010
Aneurysms in the supra-aortic extracranial arteries are rare in neurovascular pathology. Conventional surgery is effective but technically demanding and successful endovascular repair is reported. We treated 5 patients with supra-aortic extracranial artery aneurysms at our hospital (mean age 53.8 years). There were 2 aneurysms of the common carotid artery, 1 ...
Chae Eun Young - - 2010
Bronchopleural fistula (BPF), one of the potentially fatal complications after pulmonary resection, remains a therapeutic challenge. We present a case of postpneumonectomy BPF successfully managed with a silicone-covered bronchial occlusion stent. The BPF was successfully occluded without complications, and there was no stent migration or any other problem seen at ...
Lanzer Peter - - 2010
At present, the product information of intracoronary stents provided by the industry contains only limited technical data restricting judgments on the in vivo performance of individual products. Available experimental and clinical evidence suggests that interventional target sites display highly heterogeneous biomechanical behavior needed to be matched by specific stent and ...
Hasanefendioglu Aylin - - 2010
We present a case of wide-necked giant aneurysm located at the P1-P2 segment of the posterior cerebral artery. The initial goal for treatment of the aneurysm was hemodynamic flow redirection with subsequent thrombosis so the procedure and involved stent placement to the neck of the aneurysm without any filling material. ...
Can Mehmet M - - 2010
Narrowing of the iliac artery is a common presentation of systemic atherosclerosis. With the recent development of invasive techniques, angioplasty and stenting offer excellent results for fixing limb ischemia of aorto-iliac arteries. However, despite novel interventional approaches and constantly increasing experience, complications such as distal embolization, stent migration, acute or ...
Spillner Jan - - 2010
An apico-aortic conduit (AAC) is an alternative therapy in patients with aortic valve stenosis and severe concomitant disease. We investigated whether it is feasible to create an apico-aortic conduit off-pump with a newly developed, stent-based coring- and cannulation-device in the animal model. A new self-expandable, stent equipped and hooked prosthesis ...
Ng Ramford - - 2010
Since the introduction of the retrograde technique, the success rate of chronic total occlusion (CTO) percutaneous coronary intervention (PCI) has increased significantly in patients with suitable anatomy. To our knowledge, retrograde recanalization of a CTO from the abluminal side of a previously placed stent has not been reported. We describe ...
Early M - - 2010
There have been notably higher rates of restenosis with stents used to restore blood flow to many stenosed peripheral arteries compared with their coronary counterparts. The mechanical environment of arteries such as the femoral and popliteal (and the stent fracture that this can cause) has previously been identified as a ...
Jolly Neeraj - - 2010
Chronic constrictive pericarditis can result in extrinsic compression of coronary arteries during diastole. We present one such case wherein the coronary compression and the resultant cardiac ischemia developed late after surgical pericardiectomy, and treatment with intracoronary stenting was unsuccessful. Issues pertaining to management of this rare condition are discussed and ...
Saleh Layth - - 2010
Intracoronary undeployed stent embolization occurring during percutaneous coronary intervention is an infrequent complication. Published data indicate that without stent retrieval, the outcome is unfavourable. The present report describes a case in which failure to retrieve an undeployed embolized stent from the mid right coronary artery was managed conservatively with acetylsalicylic ...
Bajaj Sharad - - 2010
Most commonly, coronary artery aneurysms are secondary to atherosclerosis, but cases have been reported in patients who have vasculitis or tissue disorders, and in patients who have undergone interventional procedures. However, over the past few years, an increasing number of cases of coronary artery aneurysms after drug-eluting stent implantation have ...
Villa-Uriol M C MC Computational Imaging & Simulation Technologies in Biomedicine (CISTIB), Universitat Pompeu Fabra (UPF), Barcelona, Spain. - - 2010
AngioLab is a software tool developed within the GIMIAS framework and is part of a more ambitious pipeline for the integrated management of cerebral aneurysms. AngioLab currently includes three plug-ins: angio segmentation, angio morphology and stenting, as well as supports advanced rendering techniques for the visualization of virtual angiographies. In ...
Wykrzykowska Joanna J JJ Department of Cardiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, - - 2010
Evaluations of stents by MDCT from studies performed at single centers have yielded variable results with a high proportion of unassessable stents. The purpose of this study was to evaluate the accuracy of 64-MDCT angiography (MDCTA) in identifying in-stent restenosis in a multicenter trial. The Coronary Evaluation Using Multidetector Spiral ...
Yang P - - 2010
BACKGROUND AND PURPOSE: MCA aneurysms are common and often pose technical challenges to interventionalists. Intracranial stents are widely used in treating wide-neck aneurysms in other locations. To evaluate the feasibility, effectiveness, and safety of stent placement in MCA aneurysms, we performed this retrospective study. MATERIALS AND METHODS: Between October 2003 ...
Sreeram Narayanswami - - 2010
Little is known about the outcome of acute thrombotic occlusion of segments of the cavopulmonary connections (CPC) in infants and children with univentricular hearts. Early recognition and aggressive therapy may result in successful salvage of some of these patients. Five consecutive patients (age range 4-8 months) presenting with acute occlusion ...
Sun Zhonghua - - 2010
We wanted to investigate the hemodynamic effect of fenestrated stents on the renal arteries with using a fluid structure interaction method. Two representative patients who each had abdominal aortic aneurysm that was treated with fenestrated stent grafts were selected for the study. 3D realistic aorta models for the main artery ...
Xue Hui - - 2010
OBJECTIVE: To evaluate the efficacy of intravascular intervention in the management of different types of Budd-Chiari syndrome. METHODS: Fifty-three patients of BCS were clinically diagnosed and interventionally treated in terms of their signs and symptoms of portal hypertension and occlusive inferior vena cava/or hepatic veins with the combination of Doppler ...
Hu Hong-Tao - - 2010
We describe a case of percutaneous placement of a thoracic aortic stent-graft for safe removal of a malpositioned pedicle screw in a 52-year-old man. The patient had undergone posterior thoracic spinal instrumentation for pyogenic spondylitis and spinal deformity 8 months previously. Follow-up CT images showed a malpositioned pedicle screw which ...
Oweis Yaseen - - 2011
We describe the delayed development of intracranial abscesses following emergent treatment with a covered stent-graft for carotid blowout syndrome (CBS) in a patient with head and neck cancer. The patient presented with hemoptysis and frank arterial bleeding through the tracheostomy site. A self-expandable stent-graft was deployed across a small pseudoaneurysm ...
Szólics Alex - - 2010
OBJECTIVES: To evaluate the safety and feasibility of the use of covered stents for the treatment of extracranial carotid artery stenosis caused by highly embologenic plaques, and to study the long-term outcome of patients receiving such covered stents. METHODS: Between 2002 and 2007, 46 patients (63% symptomatic, 78.3% male, 67 ...
Sommer C M - - 2010
The purpose of this study was to evaluate the impact of stent design on in-stent stenosis in rabbit iliac arteries. Four different types of stent were implanted in rabbit iliac arteries, being different in stent design (crown or wave) and strut thickness (50 or 100 microm). Ten stents of each ...
Nakamura Yuki - - 2010
We report a case of a patient who underwent removal of an external stent of the bronchus. She had undergone external stenting for tracheobronchomalacia. After removal of the external stent, the bronchus was just as widely patent as preoperative state.
Shimamoto Takeshi - - 2010
OBJECTIVES: Paraplegia remains a serious complication after endovascular repair of thoracic aortic aneurysms, and it has been reported that paraplegia might be due to ischemia of the artery of Adamkiewicz. This study investigates the feasibility of an Inoue stent graft with a side branch of a small caliber for the ...
Piotin Michel - - 2010
BACKGROUND AND PURPOSE: Stent-assisted coiling has expanded the treatment of intracranial aneurysms, but the rates of procedure-related neurological complications and the incidence of angiographic aneurysm recurrence of this novel treatment are not yet well known. We present our experience with stent-assisted coiling with special emphasis on procedure-related neurological complications and ...
Kerr Andrew - - 2009
PURPOSE: To test the novel hypotheses that (1) endograft profile can be reduced if the components do not overlap in the carrier catheter and (2) the inside-out deployment technique can produce a device with overlapping layers. TECHNIQUE: This study evaluated an endograft in which the graft and stents were connected ...
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