Search Results
Results 301 - 350 of 1835
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Hegland O - - 2010
OBJECTIVES: To examine the effect of early statin treatment on progression of arteriosclerosis in internal carotid arteries (ICA); to compare the progression of arteriosclerosis in ICA of patients treated with a statin to the progression seen in drug-na?ve patients. PATIENTS AND METHODS: We performed repetitive Doppler scans of 363 carotid ...
Righini Christian Adrien - - 2009
Acute isolated sphenoid sinusitis is a relatively uncommon entity. Because its symptoms and clinical findings are nonspecific, it can be easily misdiagnosed. Left unrecognized and untreated, it can lead to several well-known and severe complications, including meningitis, cerebral abscess, cavernous sinus thrombosis, and epidural or subdural empyema. We report the ...
Romero José R - - 2009
Carotid artery disease is common and increases the risk of stroke. However, there is wide variability on the severity of clinical manifestations of carotid disease, ranging from asymptomatic to fatal stroke. The collateral circulation has been recognized as an important aspect of cerebral circulation affecting the risk of stroke as ...
Robbs J V - - 2009
This study represents a prospective audit comparing carotid artery stenting (CAS) with carotid endarterectomy (CEA), performed by a single surgical team. Between January 2005 and December 2008, 440 patients were referred; 177 had CAS and 263 CEA. Selection of procedure was individualised and contra-indications for CAS included internal carotid artery ...
Slovut David P - - 2010
Severe stenosis of the common carotid artery (CCA), while uncommon, is associated with increased risk of transient ischemic attack and stroke. To date, no validated duplex ultrasound criteria have been established for grading the severity of CCA stenosis. The goal of this study was to use receiver-operating curve (ROC) analysis ...
Shimizu Hiroaki - - 2010
OBJECTIVE: Parent artery occlusion with/without bypass surgery is one of the treatment choices for the internal carotid artery (ICA) aneurysm difficult to treat by clipping or coiling. There have been few reports regarding postoperative cerebral blood flow (CBF) changes after surgery. This study evaluated the present bypass selection strategy based ...
Coster Suzan - - 2010
Two young women with ischemic stroke successfully underwent intra-arterial thrombolysis (IAT) 10 and 11h, respectively after stroke onset. A 23-year-old (case 1) and a 22-year-old woman (case 2) who developed severe neurological deficits (NIHSS 20 and 13, respectively) were presented to our hospital 9h after onset of the symptoms. In ...
Fernandez-Miranda Juan C - - 2009
OBJECTIVES/HYPOTHESIS: We sought to investigate the anatomical relation of the intrasphenoid septations to the internal carotid artery (ICA). METHODS: Twenty-seven preoperative high-resolution computed tomography angiographic (CTA) scans with 1 mm of separation acquisition were examined. In addition, an endoscopic endonasal approach and high-resolution computed tomography were done on 27 fresh-frozen ...
Akar Ali - - 2009
AIM: Increasing use of surgical magnification for operations in the territory of the anterior choroidal artery (AChA) has created a need for detailed knowledge of their anatomical variations. The aim of the present study is to examine the anatomical variations of the AChAin patients operated via pterional approach. MATERIAL AND ...
- - 2009
BACKGROUND: Better methods of identifying which patients with asymptomatic carotid stenosis will develop stroke, are required to improve the risk-benefit ratio of carotid endarterectomy. A promising method is the detection of asymptomatic embolic signals using transcranial Doppler. Embolic signals predict stroke risk in symptomatic carotid stenosis, but their predictive role ...
Jaspers Gijs W - - 2009
Four patients with high internal carotid artery (ICA) occlusive disease were indicated for surgical endarterectomy and needed additional exposure besides regular head rotation and extension. When indicated, in our clinic this is usually achieved by mandibular subluxation with interdental wiring. Due to dental wear and periodontal disease, all 4 patients ...
Mourand Isabelle - - 2010
INTRODUCTION: Internal carotid artery dissection with tandem internal carotid and middle cerebral artery occlusion may be responsible for large cerebral infarction that carries a general poor prognosis. Recanalization of internal carotid artery (ICA) dissection by stent-assisted thrombolysis has been recently proposed. We report two cases of acute symptomatic ICA dissection ...
Plumb Andrew A - - 2010
A case of incidentally diagnosed fenestration of the supraclinoid internal carotid artery (ICA) with an associated aneurysm is presented. We present appearances on magnetic resonance angiography, which have not been previously described. Careful interrogation of the data in volume-rendered and multiplanar reformats was required to make the diagnosis. The relationship ...
Goode S D - - 2009
PURPOSE: In patients with symptomatic carotid artery disease the predominant mechanism causing ischaemic injury is considered to be thromboembolic, however compromise of cerebral haemodynamics is considered to be a significant factor. Removal of the embolic source is accepted as the major benefit from carotid endarterectomy (CEA), however improvement in cerebral ...
Koch Sebastian - - 2009
BACKGROUND: Disturbances in local blood flow influenced by arterial geometry contribute to atherogenesis. Carotid bifurcation hemodynamics depend on the relative sizes of the common carotid artery (CCA), internal carotid artery (ICA), and external carotid artery (ECA), which vary considerably among individuals. The prevalence of carotid bifurcation atherosclerosis differs among race-ethnic ...
Franke Jennifer - - 2009
We sought to examine the acute and subacute results of carotid stenting performed during live transmissions. Teaching courses focusing on live demonstrations of carotid interventions have been the key educational facility for physicians interested in learning state-of-the-art interventional techniques of carotid stenosis treatment. However, starting with the very first live ...
Tiu Ramon - - 2009
Paroxysmal nocturnal hemoglobinuria (PNH) is a rare, acquired bone-marrow disorder characterized by hemolytic anemia, hemoglobinuria, and cytopenia. Most patients die from venous thrombotic events. Stroke is a common cause of morbidity and mortality in PNH and it is almost exclusively a result of cerebral venous thrombosis. Case reports of ischemic ...
Taha Mahmoud M - - 2009
Distal embolism is an important periprocedural technical complication with carotid angioplasty and carotid artery stenting (CAS). We evaluated the safety and efficacy of protection devices used during CAS by detecting new cerebral ischemic lesions using diffusion-weighted magnetic resonance imaging in 95 patients who underwent 98 CAS procedures: 34 using single ...
Yim Seong Jin - - 2009
Agenesis of the common carotid artery (CCA) resulting in separation of the origin of the external carotid artery (ECA) and internal carotid artery (ICA) from the aortic arch is rare. Fewer than 25 cases have been reported, and correlative ultrasound data were available for only 1 of them. A 52-year-old ...
Huang Zei-Lun - - 2010
To report a patient with diabetic rubeosis who suffered from acute retinal ischemic change and stroke after intravitreal injection of bevacizumab. A 55-year-old man had diabetes with unilateral rubeosis and macular edema. Three days after receiving intravitreal injection of bevacizumab (1.25 mg in 0.1 ml), he developed acute vision loss ...
Sadek Mikel - - 2009
Prior neck irradiation may induce atherosclerosis in the carotid artery and is considered an indication for carotid angioplasty and stenting (CAS). This study sought to evaluate the effect of neck radiation therapy (XRT) on the rate of restenosis and embolic potential in patients undergoing CAS. Two hundred ten CAS procedures ...
Ichikawa Hiroo - - 2009
OBJECTIVE: The goal of the study was to investigate factors associated with dilation of the internal carotid artery (ICA) and basilar artery (BA), which reflect the anterior and posterior circulation respectively, and to examine if these arteries are affected differently by specific factors. METHODS: The diameters of ICA and BA ...
Park Jong-Ho - - 2009
BACKGROUND: To determine the role of small vertebrobasilar artery (SVBA) in patients with posterior circulation stroke (PCS), we evaluated the ischemic patterns, collateral features, and stroke mechanisms in PCS patients with SVBA. METHODS: Ischemic findings on magnetic resonance (MR) imaging were correlated with 3D time-of-flight/contrast-enhanced MR angiography and/or catheter angiography ...
Kolkert Joé L - - 2011
The aim of this study was to investigate a possible overestimation of the degree of contralateral carotid artery stenosis by duplex in patients with significant bilateral carotid stenoses who are to undergo carotid endarterectomy (CEA). A retrospective analysis was performed of all patients undergoing CEA in our center over a ...
Grinberg Leopold - - 2009
High-resolution three-dimensional simulations (involving 100 million degrees of freedom) were employed to study transient turbulent flow in a carotid arterial bifurcation with a stenosed internal carotid artery (ICA). The geometrical model was reconstructed from MRI images, and in vivo velocity measurements were incorporated in the simulations to provide inlet and ...
Govaert P - - 2009
INTRODUCTION: Here (and in an accompanying article dealing with definitions, differential diagnosis and registration), a structured sequential diagnostic flow is proposed to discern clinical phenotypes for perinatal stroke, including arterial ischaemic stroke (AIS), cerebral sinovenous thrombosis (CSVT) and haemorrhagic stroke. MATERIAL AND RESULTS: For neonatal AIS, the diagnostic sequence is ...
Nedelmann Max - - 2009
BACKGROUND AND PURPOSE: Transcranial color-coded duplex sonography has become a standard diagnostic technique to assess the intracranial arterial status in acute stroke. It is increasingly used for the evaluation of prognosis and the success of revascularization in multicenter trials. The aim of this international consensus procedure was to develop recommendations ...
Wertman Brett M - - 2009
OBJECTIVES: This study sought to assess the ability of coronary computed tomography angiography (CTA) in identifying complex coronary stenosis morphology before invasive coronary angiography (ICA) and percutaneous coronary intervention (PCI). BACKGROUND: Complexity of stenosis morphology affects PCI success. Whether CTA can detect the entire spectrum of recognized complex stenosis morphologies ...
Koennecke H-C - - 2009
Approximately 15% of ischemic strokes are caused by extracranial carotid stenoses. Revascularization of a symptomatic stenosis is very efficacious in carefully selected patients. This review outlines criteria which help to identify those who will benefit most from carotid endarterectomy (CEA) for symptomatic stenosis. Asymptomatic carotid stenosis is a common condition ...
Lam Russell C - - 2009
Stroke is the third most common cause of death in the United States. Approximately 30% of all ischemic strokes are secondary to carotid artery disease. Carotid endarterectomy (CEA) is considered the gold standard for the treatment of carotid artery stenosis. Endovascular techniques such as carotid angioplasty and stenting (CAS) have ...
Martinelli O - - 2009
The value of TCD in clinical practice is well established since it can be used to measure cerebral vasomotor reactivity and to detect and grade vasospasm (VSP) following subarachnoid haemorrhage and cerebral blood perfusion consequences of extracranial ICA stenosis or occlusion. Intracranial steno-occlusive disease can be detected more reliably by ...
Hui Ferdinand K - - 2010
BACKGROUND: Mechanical thrombectomy devices rely on the ability of an operator to directly access a thrombus with the device. The authors demonstrate the first reported posterior-to-anterior circulation approach using the Penumbra Stroke System (Penumbra, Inc, Alameda, CA) for thrombectomy in acute stroke. CASE DESCRIPTION: A 53-year-old man presented 5 hours ...
Hui Ferdinand K - - 2009
BACKGROUND: Mechanical thrombectomy devices rely on the ability of an operator to directly access a thrombus with the device. The authors demonstrate the first reported posterior-to-anterior circulation approach using the Penumbra Stroke System (Penumbra, Inc, Alameda, CA) for thrombectomy in acute stroke. CASE DESCRIPTION: A 53-year-old man presented 5 hours ...
Ma Dongyang - - 2009
We report our experience of the management of 53 patients with 57 carotid body tumours from two units of oral and maxillofacial surgery in China between 1995 and 2006. Digital subtraction angiography was used most often for the confirmation of diagnosis and preoperative assessment. Fifty-one patients with 55 tumours had ...
Mitsuhashi Yutaka - - 2009
Carotid artery stenting (CAS) is an effective and less invasive alternative to carotid endarterectomy for internal carotid artery (ICA) stenosis, but the guiding catheter is often technically difficult to introduce into the common carotid artery (CCA) in patients with concomitant atherosclerotic disease in the peripheral vessels or aorta. A new ...
Amiridze Nana - - 2009
BACKGROUND: Basilar artery thrombosis remains a significant clinical problem, and no reproducible animal model has been established to study the stroke within the vertebrobasilar distribution. We report a study designed to pilot test a novel model of brainstem stroke in rabbits, created by selective endovascular occlusion of the basilar artery. ...
Anastasiadis Kyriakos - - 2009
BACKGROUND: Carotid artery stenosis (CAS) is a well-known risk factor for perioperative stroke in cardiac surgery. It is unclear whether preoperative carotid screening should be applied to all patients. Carotid intervention concomitantly with cardiac operations is also controversial. Our objective was to identify the prevalence of significant CAS and its ...
Arora S - - 2010
OBJECTIVE: To determine the optimal spatial coverage for CT-imaging of carotid atherosclerosis, allowing the most accurate prediction of the associated risk of ischemic stroke. METHODS: In a cross-sectional study, we retrospectively identified 136 consecutive patients admitted to our emergency department with suspected stroke who underwent a CT-angiogram (CTA) of the ...
Eleftheriou Despina - - 2009
Arterial ischemic stroke (AIS) and cerebral venous sinus thrombosis (CVST) are increasingly recognized as causes of significant childhood disability. Lack of knowledge of the underlying pathogenic mechanisms results in diagnostic challenges and complicates therapeutic decisions, as reflected in divergent recommendations in three sets of pediatric stroke guidelines. In addition, there ...
Turtzo L Christine - - 2009
Limb-shaking transient ischemic attacks (TIAs) occur when perfusion is reduced to the cortical territory associated with the transient movements. We present a case in which a patient with preexisting left internal carotid artery (ICA) occlusion developed limb-shaking TIAs secondary to severe stenosis of her left external carotid artery (ECA). After ...
Mehta Rajendra H - - 2009
Data on the safety of carotid artery stenting (CAS) in a large number of unselected patients with contralateral occlusion and significant ipsilateral stenosis are less known. Accordingly, we evaluated 3,137 patients undergoing CAS who were enrolled in a German Registry from 2000 to 2008 and compared the clinical features and ...
Binning M J - - 2009
We report a 54-year-old man who suffered a stroke from a complete right internal carotid artery (ICA) occlusion. Two months later, he presented with right eye blindness. Imaging demonstrated 50% recanalization of his right ICA. He underwent a right carotid endarterectomy to prevent contralateral stroke from emboli through a patent ...
Schreiber Stefanie - - 2009
BACKGROUND AND PURPOSE: The coincidence of hemodynamic and embolic findings in patients with stroke from large artery stenosis has suggested an interaction of both pathologies. This has emerged into the hypothesis of an impaired washout of emboli in the presence of hypoperfusion. We propose an additional link between both pathologies. ...
Noad R L - - 2012
Since their original description in 1687, aneurysms of the extracranial internal carotid artery (ICA) remain rare and account for less than 2% of all carotid operations (Zwolak et al. in: J Vasc Surg 1:415-422, 1984; El-Sabrout, Cooley in: J Vasc Surg 31:702-712, 2000). Cerebrovascular morbidity and mortality rates remain high ...
Frosk Patrick - - 2009
Arterial ischemic stroke involving the posterior circulation is uncommon in children. The underlying etiologies and risk factors predisposing to posterior circulation stroke include vasculopathies, intracranial trauma, cardiac disease, infection, and hematologic disorders. However, in many children with posterior circulation stroke, the underlying mechanisms are poorly understood. We describe a 14-month-old ...
Chung Joonho - - 2009
The purpose of this study was to analyze the clinical outcome of 75 consecutive patients with cervical carotid artery stenosis and who were treated by carotid artery stenting (CAS) only. From February 2003 to June 2008, there were 78 stents placed in 75 symptomatic patients (mean age : 67.3 years); ...
Bernard Timothy J TJ Pediatric Neurology, B155, The Children's Hospital, Denver, 13123 East 16th Avenue, Aurora, CO 80045, USA. - - 2009
Childhood arterial ischemic stroke treatment guidelines recommend extended anticoagulation in cardioembolism and dissection. We sought to investigate the safety of extended anticoagulation in childhood arterial ischemic stroke with nonmoyamoya arteriopathy, for which the risk of recurrent stroke is high. Thirty-seven patients with childhood-onset arterial ischemic stroke with acute arteriopathy (excluding ...
Kim Y D - - 2009
BACKGROUND AND PURPOSE: Although it has been suggested that bilateral symmetry of atherosclerosis can be found in paired arteries, including external carotid arteries and femoral arteries, it has remained unknown in intracranial arteries. We determined whether bilateral symmetry (a mirror pattern) of atherosclerosis presents in the entire cerebral arterial system. ...
Tanaka Tomotaka - - 2009
The significance of asymptomatic leukoaraiosis is unknown although cerebral microangiopathy is regarded as its pathology. To confirm the relationship between leukoaraiosis and cerebral microangiopathy, the pulsatility index (PI) at the cervical internal carotid artery (CA) which has been proposed as an indicator of microangiopathy, was evaluated in relation to leukoaraiosis. ...
Lind Lars - - 2009
BACKGROUND: Arterial compliance and endothelium-dependent vasodilation are two characteristics of the vessel wall. In the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) study, we studied the relationships between arterial compliance and endothelium-dependent vasodilation versus atherosclerosis as measured with two imaging modalities. METHODS: In the population-based PIVUS study (1016 ...
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