Search Results
Results 151 - 200 of 1848
1 2 3 4 5 6 7 8 9 10 >
Khong Yee - - 2010
Defective deep placentation is characterised by defective remodelling of the utero-placental arteries. Under certain conditions, it is also characterised by the presence of arterial lesions, such as acute atherosis and the persistence of endovascular trophoblast. The condition has been associated with a spectrum of complications during pregnancy, including pre-eclampsia, intrauterine ...
Kwon Tai Hyung - - 2011
Carotid stenosis with intraluminal thrombus is associated with a high risk of early recurrent stroke. We evaluated the feasibility and outcome of carotid stenting in acute ischemic stroke patients with carotid stenosis and intraluminal thrombus. Among 295 consecutive acute ischemic stroke patients who were referred for intra-arterial thrombolytic (IAT) therapy, ...
Carrera E E Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK. - - 2011
A decrease in arterial compliance of the internal carotid artery has been associated with an increased risk in ipsilateral ischaemic stroke. However, so far, no technique has been validated to monitor the compliance of intracerebral arteries (Ca) in patients with carotid artery disease. In this study, we sought to monitor ...
Clair Daniel G - - 2011
Each of the embolic protection devices used in carotid artery stenting (CAS) has advantages and disadvantages. The prospective, multicenter, single-arm EMPiRE Clinical Study investigated a proximally placed device (GORE Flow Reversal System) that provides distal neuroprotection during CAS by reversing blood flow in the internal carotid artery, thereby directing emboli ...
Camporese Giuseppe - - 2011
Spontaneous recanalization of intracranial internal carotid artery (ICA) occlusion is frequent in embolic strokes. Spontaneous recanalization of the extracranial portion of the ICA occlusion of atherosclerotic or embolic origin is only anecdotally reported, and data are lacking about its incidence, natural history, and outcome in long-term follow-up. Consecutive patients with ...
Berger Ludovic - - 2011
A case of persistent proatlantal artery (PA) is described in a 60-year-old woman who presented with cerebellar ataxia, homonymous hemianopia, and aphasia. Both Doppler scan and magnetic resonance angiography (MRA) showed agenesis of both vertebral arteries, 80% stenosis of the left internal carotid artery (ICA), and an anastomotic vessel between ...
Vicenzini Edoardo - - 2010
Comprehension of the pathophysiologic characteristics of atherosclerosis has focused its attention on the study of dynamic and metabolic processes involving the vessel wall as possible causes of stroke. When compared with conventional radiologic techniques, sonography has the main advantage of being a real-time imaging modality. We report 2 acute stroke ...
Curry Philip - - 2010
Stroke is a devastating complication during coronary artery bypass grafting. Screening may identify patients at highest risk. Surgical timing, sequence strategies and carotid stenting remain unresolved. Selective use of techniques could prevent adverse neurological sequelae while achieving complete myocardial revascularization.
Li Jie - - 2010
The purpose of this study was to investigate carotid artery hemodynamics and blood flow involving external carotid artery (ECA) and internal carotid artery (ICA) patency in patients with Takayasu arteritis (TA). The common carotid artery (CCA), ECA, ICA, and vertebral artery (VA) were examined in 19 patients with TA involving ...
Petar Popov - - 2010
The purpose of this report is to describe our experience of infected false aneurysm treatment following internal carotid artery (ICA) reconstruction. Five and 6 years before admission, bilateral reconstruction was done because of ICA kinking at a local health center. The patient was symptomless for 5 years but later became ...
Knur Rainer - - 2011
Carotid artery stenting (CAS) is an efficient alternative procedure for the treatment of high-surgical-risk patients with symptomatic and asymptomatic carotid stenosis. The use of cerebral protection systems might decrease procedural risk of stroke and death. We report our initial experience with protected carotid stenting in high-risk patients with severe carotid ...
Wardlaw Joanna M - - 2011
Atheromatous middle cerebral artery (MCA) stenosis could cause lacunar stroke by occluding lenticulostriate artery origins, but atheroma is common, and previous studies lacked suitable controls. We aimed to determine if intracranial atheroma was more common in lacunar than in cortical ischaemic stroke. We recruited patients with lacunar stroke and controls ...
Alexandrov Andrei V - - 2012
Transcranial Doppler (TCD) is a physiological ultrasound test with established safety and efficacy. Although imaging devices may be used to depict intracranial flow superimposed on structural visualization, the end-result provided by imaging duplex or nonimaging TCD is sampling physiological flow variables through the spectral waveform assessment. Clinical indications considered by ...
Sanossian Nerses N Department of Neurology, University of Southern California, CA, USA. - - 2011
We examined the correlation of angiographic collaterals in acute stroke with the presence, extent, and distribution of white matter changes, so-called Leukoaraiosis, in an effort to determine if Leukoaraiosis indicates chronic cerebral hypoperfusion and/or is associated with the development of cerebral collateral circulation. Consecutive acute strokes due to large-vessel occlusion ...
Gizewski E R - - 2011
Approximately 6 - 50% of all ischemic strokes are caused by intracranial arterial stenosis (IAS). Despite medical prevention, patients with symptomatic IAS have a high annual risk for recurrent ischemic stroke of about 12%, and up to 19% in the case of high-grade IAS (≥ 70%). Digital subtraction angiography remains ...
AbuRahma Ali F - - 2011
Clinicians have relied on published institutional experience for interpreting carotid duplex ultrasound studies (CDUS). This study will validate the ultrasound imaging consensus criteria published in 2003. The CDUS and angiography results of 376 carotid arteries were analyzed. Receiver-operating characteristic (ROCs) curves were used to compare peak systolic velocities (PSVs), end-diastolic ...
Roth C - - 2010
BACKGROUND AND PURPOSE: The purpose of this study was to demonstrate a new approach to the use of a self-expanding stent in the treatment of acute ischemic stroke. METHODS: Twenty-two consecutive patients with acute intracerebral artery occlusions were treated with a self-expandable intracranial stent, which was withdrawn in its unfolded ...
Hassoun Heitham T - - 2010
Stroke is a leading cause of morbidity and mortality worldwide. Traditional therapy for extracranial carotid artery occlusive disease, a significant risk factor for stroke, consists of optimal medical management and selective surgical treatment with carotid endarterectomy (CEA) for stroke risk reduction. Buoyed by the widespread application of percutaneous interventions for ...
Hauck Erik F - - 2010
Patients with chronic carotid artery occlusion face a significant risk of stroke. It is believed that treatment is indicated if medical therapy fails or even as prophylaxis in high-risk patients. Direct surgical repair with carotid endarterectomy has a considerable failure rate and significant associated risks. Indirect repair with an extracranial-to-intracranial ...
Jiao Lei - - 2010
OBJECTIVE; ; The objective of this study was to identify developmental changes in vascular smooth muscle cells (VSMC) during aneurysm formation using an elastase-induced rabbit carotid artery aneurysm model. - Aneurysms were induced in carotid arteries of rabbits by exposure to elastase. Tissues from developing aneurysms were isolated at various ...
Boulos Alan S - - 2011
Object Tamoxifen has been shown to be a potent neuroprotectant against stroke in rodents. Because other neuroprotectant medications have failed in human trials, a study of tamoxifen in a large-animal model was necessary to further assess the drug's effectiveness. For this study, the authors developed an endovascular model of anterior ...
Safian Robert D - - 2010
A prospective nonrandomized multicenter registry of 160 patients with severe carotid stenosis and high-risk features for carotid endarterectomy was conducted during the 3-month period from March to May 2005. Carotid artery stenting (CAS) was performed with the SpideRX™ Embolic Protection System (ev3, Inc., Plymouth, MN, USA) as part of an ...
Kimiagar I - - 2010
Cerebral hemodynamic status might be prognostic for either the symptomatic or asymptomatic course of carotid occlusive disease. It is determined by evaluating cerebral vasomotor reactivity (VMR). We assessed VMR in asymptomatic patients with total occlusion of the internal carotid artery (ICA) and followed them to evaluate the role of impaired ...
Shah Parth S - - 2010
Recanalization after extracranial internal carotid artery (ICA) occlusion is a rare phenomenon and the natural history of the disease is largely unknown. There have been few cases reported in the published data, including early recanalization after a cerebrovascular accident (CVA). We report a case of a 74-year-old man who presented ...
Radhakrishnan M - - 2010
We describe a case of postoperative stroke in a patient undergoing anterior cervical discectomy caused by a combination of intraoperative retraction of an atherosclerotic carotid vessel and arterial hypotension.
Markl Michael - - 2010
the purpose of this study was to analyze the in vivo distribution of absolute wall shear stress (WSS(abs)) and oscillatory shear index (OSI) in the carotid bifurcation and to evaluate its dependence on bifurcation geometry, the presence of internal carotid artery (ICA) stenosis, and recanalization therapy. time-resolved 3D blood flow ...
Rodríguez-Luna David - - 2011
Before thrombolytic treatment for acute ischemic stroke is undertaken, conditions associated with increased risk of hemorrhagic complications, such as an acute aortic dissection (AAD), should be excluded. We report an 80-year-old woman with acute ischemic stroke as the sole clinical manifestation of AAD who was treated with intravenous (IV) tissue ...
Boyko Matthew - - 2010
Animal models of cerebral ischemia represent an important contribution to both our understanding of stroke mechanism and the development of new therapies. The technique of MCAO (middle cerebral artery occlusion) via ECA (external carotid artery) occlusion is widely utilized. Disruption of the ECA and its branches leads to impaired mastication ...
Dittrich Ralf - - 2011
The prevalence of elongation of the internal carotid arteries (ICA) is suggested to be significantly higher in patients with spontaneous cervical artery dissection (sCAD) than in other stroke patients. We reassessed this hypothesis in a case-control study by means of an improved semiautomated MR imaging technique. We compared the length ...
Buslovich Steven - - 2011
Spontaneous recanalization of a chronically occluded internal carotid artery (ICA) is a rare occurrence. The authors report 3 patients who had documented total occlusion of the ICA followed by late spontaneous recanalization with subsequent high-grade stenosis. The patients in this series had occlusions for 11 months, 36 months, and 39 ...
Bhatia Rohit R Department of Clinical Neurosciences, Foothills Hospital, University of Calgary, Calgary, Alberta, Canada. - - 2010
Acute rates of recanalization after intravenous (IV) recombinant tissue plasminogen activator (rt-PA) in proximal vessel occlusion have been estimated sparingly, typically using transcranial Doppler (TCD). We aimed to study acute recanalization rates of IV rt-PA in CT angiogram-proven proximal (internal carotid artery [ICA], M1 middle cerebral artery [MCA], M2-MCA, and ...
Reid Amy J - - 2010
Moyamoya disease is a rare stroke syndrome of unknown etiology resulting from stenosis or occlusion of the supraclinoid internal carotid artery (ICA) in association with an abnormal vascular network in the basal ganglia. Although the highest incidence of moyamoya disease is in pediatric patients, pathology reports have been primarily limited ...
Cattaneo Luigi - - 2010
We investigated the pattern of volitional facial motor deficits in acute stroke patients. We assessed the strength of single facial movements and correlated it to the site of infarct classified on computed tomography scans. Exclusion criteria were previous stroke, cerebral hemorrhage, and subcortical stroke. Results showed that weakness in eyelid ...
Ceylan Serdar - - 2010
The blood vessel anomalies of the head-neck area may result in death with massive hemorrhage during head and neck surgery. Although anomalies of internal carotid artery (ICA) are observed particularly on the posterior pharyngeal wall, we may confront them in various localizations. Because of these anomalies, the surgeon must always ...
Kar Subrata - - 2010
Carotid artery stenting (CAS) prior to open-heart surgery may be a useful approach to minimise the risk of neurologic events in patients undergoing aortic valve replacement (AVR). All patients referred for carotid intervention at our institution between 1998 and 2005 with concomitant severe aortic stenosis (AS) (aortic valve area <1.0 ...
Chaer Rabih A - - 2010
Octogenarians and even patients over 70 years old have unexplained poor outcomes with carotid angioplasty and stenting (CAS). We sought to evaluate whether older patients may have compromised intracranial collaterals and cerebral reserve and be intolerant to otherwise clinically silent emboli generated during CAS. One thousand twenty-four cerebral blood flow ...
Groen Harald C - - 2010
Accurate assessment of wall shear stress (WSS) is vital for studies on the pathogenesis of atherosclerosis. WSS distributions can be obtained by computational fluid dynamics (CFD) using patient-specific geometries and flow measurements. If patient-specific flow measurements are unavailable, in- and outflow have to be estimated, for instance by using Murray's ...
Olindo Stephane - - 2010
BACKGROUND AND PURPOSE: The aim of the current study was to determine the prevalence of basilar artery hypoplasia (BAH) and to evaluate whether BAH is a possible risk factor for posterior circulation stroke (PCS). METHODS: Basilar artery diameter was assessed by MRI in 685 consecutive ischemic stroke patients. BAH frequency, ...
Yu Mengnan - - 2010
The aim of this study was to identify image-based morphological parameters that correlated with the formation of internal carotid artery-posterior communicating artery (ICA-PcomA) aneurysms. Morphological parameters obtained from 3-dimensional digital subtraction angiography (3D-DSA) were evaluated from nine patients with ICA-PcomA aneurysms, including the diameter of the ICA (Dica) and PcomA ...
Kawashima Masatou - - 2011
<title/> Objectives: The purpose of our study was to evaluate the correlation between fluid-attenuated inversion recovery (FLAIR) images of hyperintense vessel (HV), a representative of leptomeningeal vessels (LMVs), and cerebral vascular hemodynamic status in patients with steno-occlusive disease of the internal carotid artery (ICA) and middle cerebral artery (MCA). Sixty-eight ...
Cohen José E - - 2010
Internal carotid artery (ICA) agenesis has been usually reported as an asymptomatic condition in association with other congenital anomalies. However, it is less well described in the context of clinical neurological syndromes. Five cases of ICA agenesis are reviewed. The diagnosis of ICA agenesis was based on the absence of ...
Hess C P - - 2010
Cerebral and cervical arterial abnormalities are the most common non-cutaneous anomaly in PHACE syndrome, but the location and type of arterial lesions that occur have not been systematically assessed in a large cohort. Our aim was to characterize the phenotypic spectrum of arteriopathy, assess the frequency with which different arteries ...
Dhall Anil - - 2010
Carotid endarterectomy in the presence of an occluded contralateral artery is associated with a high risk of perioperative stroke. Carotid stenting with neuroprotection devices has emerged as a safe procedure for revascularization in this circumstance. We performed high-risk carotid angioplasty in a patient with a history of recurrent transient ischemic ...
Kablak-Ziembicka Anna - - 2010
To evaluate the possible role of transcranial color-coded Doppler ultrasonography (TCD) in predicting cerebral reperfusion injury (CRI) in patients undergoing carotid artery stenting (CAS) for internal carotid artery (ICA) stenosis. TCD was obtained in 210 patients (149 men; mean age 64.2+/-8.4 years, range 44-83) who underwent CAS for ICA stenosis ...
Shakhnovich Irina - - 2010
The accuracy of carotid duplex ultrasonography (CDU) in detecting moderate and severe carotid artery disease was evaluated in comparison with arteriography. Accuracy of CDU was correlated with arteriographic findings using North American Symptomatic Carotid Endarterectomy Trial (NASCET) criteria in 147 internal carotid arteries. The duplex measurements consisted of peak systolic ...
Xu David S - - 2010
The external carotid artery (ECA) anastomoses in many distal territories supplied by the internal carotid artery (ICA) and is an important source of collateral circulation to the brain. Stenosis of the ECA in ipsilateral ICA occlusion can produce ischemic sequelae. To examine the effectiveness of ECA stenting in treating symptomatic ...
Choi S - - 2010
The aim of this study was to closely examine the course of the intercostal arteries within the intercostal spaces particularly with regard to where the arteries were located in relation to their adjacent ribs. The degree of tortuosity of the arteries was also examined, along with anatomical differences in different ...
Rhee Hak Young - - 2010
Recurrent cerebral infarctions developed in a patient with idiopathic thrombocytopenic purpura (ITP). At the time of the first stroke, there were large thrombi in the right proximal internal carotid artery (ICA) and an occlusion of the right terminal ICA. The occlusion was recanalized by intra-arterial infusion of urokinase. After 20 ...
Marques M A - - 2010
Neurologic events associated to antiphospholipoid syndrome (APLS) are not uncommon, but ischemic stroke due to acute carotid thrombosis, is a rare presentation of this syndrome. We report a case of a 48 years old female patient, without evidence of atherothrombosis or other vascular pathology, who presented an ischemic stroke due ...
Goyal Manu S MS Department of Neurology, Washington University School of Medicine, St. Louis, Missouri, - - 2010
To define the clinical characteristics and outcome of patients with idiopathic stenosis or occlusion of the basal arteries, without moyamoya collateral vessel formation. We identified patients who presented to our institution from 1996 to 2005 with occlusive disease of the distal internal carotid artery or the proximal middle or anterior ...
1 2 3 4 5 6 7 8 9 10 >