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July 1-15 2006 Postings (Note: Some archived links may become inactive)


07/15/2006 12:33 PM

Usefulness of Diffusion Tensor Imaging for Evaluation of Motor Function in Patients With Traumatic Brain Injury Three Case Studies

Journal of Head Trauma Rehabilitation. Focus on Clinical Research and Practice, Part 2. 21(3):272-278, May/June 2006


To determine whether diffusion tensor imaging (DTI) can detect diffuse axonal injury, and to evaluate the association of DTI findings with motor function in patients with traumatic brain injury.


07/15/2006 12:32 PM

Stroke rehabilitation outcome: the Turkish experience

International Journal of Rehabilitation Research. 29(2):105-111, June 2006

The objectives of this study were to examine the demographic and clinical characteristics of stroke patients admitted for inpatient rehabilitation, to study the occurrence of medical problems/complications, and to document functional outcome and possible factors influencing outcome.


07/15/2006 12:31 PM

The effectiveness of a stroke education group on persons with stroke and their caregivers

International Journal of Rehabilitation Research. 29(2):123-129, June 2006

The educational group has been proposed as an effective way to deliver a program based on structured stroke knowledge to enhance emotional support among people with stroke and their caregivers. The aim of this study was to explore whether the stroke educational group could increase stroke-related knowledge, and improve perceived health status, in persons with stroke and their caregivers, and thus reduce the stress induced during the care-giving process.


07/15/2006 12:30 PM

The predictive factors for length of stay for stroke patients in Taiwan using the path model

International Journal of Rehabilitation Research. 29(2):137-143, June 2006

The aim of this study was to examine the predictive factors, and their relative strengths, for predicting length of rehabilitation stay using the path model. One hundred and seventeen stroke patients were recruited from two rehabilitation units in university-affiliated hospitals in northern Taiwan. The Taiwanese Rehabilitation Database System was used to collect the patient's relevant information. Path analysis was used to explore the relative strengths of each predictive factor. The results showed that the ability to engage in self-care activities was the only direct predictor, whereas subjective well-being and cognitive social skills had an indirect effect on the length of rehabilitation stay, mediating through cognitive-social skills and ability to engage in activities of daily living, respectively.


07/15/2006 12:24 PM

Epidermal Growth Factor Receptor Activation An Upstream Signal for Transition of Quiescent Astrocytes into Reactive Astrocytes after Neural Injury

The Journal of Neuroscience, July 12, 2006, 26(28):7532-7540

Modulating the behaviors of reactive astrocytes is a potential therapeutic strategy for neurodegenerative diseases. We found that upregulation and activation of the epidermal growth factor receptor (EGFR) occur in astrocytes after different injuries in optic nerves in vivo. Activation of EGFR regulates genes and cellular processes representing most major markers of reactive astrocytes and genes related with glaucomatous optic neuropathy and other neural disorders. These results suggest that activation of EGFR is a common, regulatory pathway that triggers quiescent astrocytes into reactive astrocytes in response to neural injuries in the optic nerve, and perhaps other parts of the CNS.


07/15/2006 12:22 PM

Cortical Inhibition Modified by Embryonic Neural Precursors Grafted into the Postnatal Brain

The Journal of Neuroscience, July 12, 2006, 26(28):7380-7389

Embryonic medial ganglionic eminence (MGE) cells transplanted into the adult brain can disperse, migrate, and differentiate to neurons expressing GABA, the primary inhibitory neurotransmitter. It has been hypothesized that grafted MGE precursors could have important therapeutic applications increasing local inhibition, but there is no evidence that MGE cells can modify neural circuits when grafted into the postnatal brain. Here we demonstrate that MGE cells grafted into one location of the neonatal rodent brain migrate widely into cortex.


07/15/2006 12:21 PM

Pathways of neonatal stroke and subclavian steal syndrome

Archives of Disease in Childhood - Fetal and Neonatal Edition 2006;91:F204-F207

Neonatal stroke may occur silently. Identification of potential embolic pathways unique to the neonate is important when investigating the aetiology of infarction and arterial occlusion, and preventing further episodes. This is a case report of an infant with venous thrombus embolising across the foramen ovale causing cerebral infarction and subclavian artery steal syndrome, without neurological signs.


07/13/2006 03:39 PM

Acute Malignancy related Hydrocephalus Uncovered After Endoscopic Manipulation Possible Influence of Gastrointestinal Endoscopy on Concurrent Intracranial Lesion

Surgical Laparoscopy, Endoscopy & Percutaneous Techniques. 16(2):94-98, April 2006

A 78-year-old man underwent biliary stenting by means of endoscopy for obstructive jaundice due to common bile duct cancer. Despite uneventful operation, the patient remained comatose and began to hiccup and vomit with marked gastrointestinal gas retention. Neuroimaging studies disclosed obstructive hydrocephalus caused by a midbrain metastasis, probably from coexisting lung cancer. Ventricular peritoneal shunting restored consciousness and eliminated other gastrointestinal symptoms. This case suggests that gastrointestinal endoscopy may affect concurrent intracranial lesions, resulting in acute distress, presumably by transmission of pressure from the abdomen to a distant body compartment such as the intracranial space, or by endoscopy-related hypoventilation.


07/13/2006 03:35 PM

Utility of Repeat Head Computed Tomography After Blunt Head Trauma: A Systematic Review

Journal of Trauma-Injury Infection & Critical Care. 61(1):226-233, July 2006

Repeat head computed tomography (CT) is standard practice for head-injured patients at many trauma centers. Utilization of CT has increased over time, yet effects on outcome and associated risks are unknown. We systematically reviewed the literature to determine the incidence of progression of injury on repeat CT and resulting treatment changes.


07/13/2006 03:34 PM

Hippocampal abnormalities and seizure recurrence after antiepileptic drug withdrawal

NEUROLOGY 2006;67:134-136

The authors performed hippocampal volumetry and T2 relaxometry in 84 consecutive patients with partial epilepsy from a protocol for antiepileptic drug (AED) withdrawal after at least 2 years of seizure control. Seizure recurrence after AED withdrawal was more frequent among patients with hippocampal atrophy and abnormal hippocampal T2 signal.


07/13/2006 03:33 PM

Progression of white matter lesions and hemorrhages in cerebral amyloid angiopathy

NEUROLOGY 2006;67:83-87

To determine the rate of progression of white matter lesions and hemorrhages in a cohort with cerebral amyloid angiopathy (CAA).


07/13/2006 03:32 PM

Quality improvement in acute stroke

NEUROLOGY 2006;67:88-93

To determine if stroke center designation and selective triage of acute stroke patients improve quality of care.


07/13/2006 03:30 PM

Diffuse cerebral vasoconstriction Call Fleming syndrome and stroke associated with antidepressants

NEUROLOGY 2006;67:159-160

Call–Fleming syndrome is a reversible segmental vasoconstriction of cerebral arteries manifested by a "thunderclap" headache and focal neurologic symptoms. Although of unknown etiology, it has been reported in association with vasoactive sympathomimetic drugs. The authors report Call–Fleming syndrome in two patients with history of antidepressant use. Although the association is hypothetical, the authors suggest consideration of Call–Fleming syndrome in patients presenting with headache, focal deficits, and evidence of cerebral ischemia during antidepressant use.


07/13/2006 03:29 PM

Plasma d dimer predicts poor outcome after acute intracerebral hemorrhage

NEUROLOGY 2006;67:94-98

To investigate if systemic d-dimer activation occurs after acute intracerebral hemorrhage (ICH) and to study its influence on clinical outcome.


07/13/2006 03:28 PM

Are elevated admission calcium levels associated with better outcomes after ischemic stroke

NEUROLOGY 2006;67:170-173

Calcium (Ca2+) and magnesium (Mg2+) influence the molecular pathways of ischemic neuronal death. The authors evaluated the impact of admission serum Ca2+ and Mg2+ levels, on incident stroke severity and discharge functional outcome. After adjusting for covariates, higher admission Ca2+ was significantly associated with lesser stroke severity and better discharge functional outcome. Admission Mg2+ was not an independent clinical outcome prognosticator.


07/13/2006 03:27 PM

Continuous assessment of electrical epileptic activity in acute stroke

NEUROLOGY 2006;67:99-104

To determine the incidence and risk factors of electrical seizures and other electrical epileptic activity using continuous EEG (cEEG) in patients with acute stroke.


07/12/2006 03:02 PM

Advanced Age and Preinjury Warfarin Anticoagulation Increase the Risk of Mortality After Head Trauma

Journal of Trauma-Injury Infection & Critical Care. 61(1):107-110, July 2006

A large population of patients on oral anticoagulants is exposed to the risk of traumatic brain injury (TBI). Effects of age and anticoagulation on TBI outcomes need to be assessed separately.


07/12/2006 03:01 PM

Effect of preoperative embolization on resection of intracranial meningioma Local experience

Surgical Practice, Volume 10, Number 3, August 2006, pp. 106-110(5)

Preoperative devascularization of intracranial meningioma by endovascular embolization has been performed in many institutes over the past 30?years. Advancement in microsurgical techniques and endovascular technology during the period may have offset or magnified the benefit of the procedure. The aim of the present study was to evaluate the effect of preoperative embolization on surgical resection of intracranial meningiomas.


07/12/2006 02:59 PM

Sleep Memory and Plasticity

Annual Review of Psychology Vol. 57: 139-166

Although the functions of sleep remain largely unknown, one of the most exciting hypotheses is that sleep contributes importantly to processes of memory and brain plasticity. Over the past decade, a large body of work, spanning most of the neurosciences, has provided a substantive body of evidence supporting this role of sleep in what is becoming known as sleep-dependent memory processing. We review these findings, focusing specifically on the role of sleep in (a) memory encoding, (b) memory consolidation, (c) brain plasticity, and (d) memory reconsolidation; we finish with a summary of the field and its potential future directions.


07/12/2006 02:57 PM

Epilepsy and neurodegenerative diseases in adults a clinical review

Epileptic Disorders. Volume 8, Number 1, 44-54, April 2006

Neurodegenerative disorders in adults are progressively recognized as one of the major causes of epilepsy. Improved health care, resulting in increased longevity, will unavoidably lead to an increase of epilepsy cases in the elderly. For example, in Alzheimer’s disease, almost 10% of the patients present with seizures, eventually necessitating an antiepileptic treatment. We review available data on epidemiology, diagnosis and treatment of the epilepsies when associated with major neurodegenerative disorders. Controlled, prospective studies are lacking.


07/12/2006 02:56 PM

Progressive myoclonic epilepsies myth or reality

Epileptic Disorders. Volume 8, Number 1, 37-43, April 2006

The progressive myoclonus epilepsies (PME) are rare diseases and many clinicians, who have only few opportunities to encounter such patients, may think of them as mythical.


07/12/2006 02:55 PM

Seizures, epilepsy and vascular disorders

Epileptic Disorders. Volume 8, Number 1, 69-71, April 2006

Stroke is a major cause of seizures in the elderly. About 10% of all stroke patients experience one or several seizures\; they may occur during the first 24 hours after the stroke, in the early and late stages and after several months or even years following the initial vascular accident. We review current data on epidemiology, risk factors, semiology, differential diagnosis, follow-up and recurrence, and management of seizures following stroke.


07/12/2006 02:53 PM

Use of an Optimized Transient Occlusion of the Middle Cerebral Artery Protocol for the Mouse Stroke Model

Journal of Stroke and Cerebrovascular Diseases Volume 15, Issue 4 , 8 July 2006, Pages 133-138

Intraluminal occlusion of the middle cerebral artery in rodents is widely used for investigating cerebral ischemia and reperfusion injury.


07/12/2006 02:52 PM

Predicting Mortality After Intracerebral Hemorrhage Comparison of Scoring Systems and Influence of Withdrawal of Care

Journal of Stroke and Cerebrovascular Diseases Volume 15, Issue 4 , 8 July 2006, Pages 144-150

The Broderick system and the intracerebral hemorrhage (ICH) score are two systems for predicting 30-day mortality in patients with spontaneous ICH. No previous study has compared two ICH scoring systems in an independent patient cohort. Our purpose was to externally validate and directly compare these two systems and evaluate the effect of withdrawal of care on system performance.


07/12/2006 02:51 PM

Early Supported Discharge and Continued Rehabilitation at Home After Stroke 5 Year Follow up of Resource Use

Journal of Stroke and Cerebrovascular Diseases Volume 15, Issue 4 , 8 July 2006, Pages 139-143

Early supported discharge (ESD) with continued rehabilitation at home has shown a beneficial effect on extended activities of daily living 5 years after stroke. The long-term effect of ESD on resource use has not been explored.


07/12/2006 02:50 PM

Serial Fiberoptic Endoscopic Evaluation of Swallowing in Patients With Acute Stroke and Dysphagia Case Report and General Considerations

Journal of Stroke and Cerebrovascular Diseases Volume 15, Issue 4 , 8 July 2006, Pages 172-175

Dysphagia is a common symptom in acute stroke. However, stroke-related dysphagia usually improves faster than other neurologic symptoms. Therefore, in addition to early diagnosis of dysphagia, closely meshed monitoring is necessary to guide appropriate protective and nutritional strategies. We propose serial fiber-optic endoscopic evaluation of swallowing as a valuable tool for this purpose. The clinical impact of serial fiberoptic endoscopic evaluation of swallowing is exemplified by reporting on a patient with a complicated course of stroke-related dysphagia.


07/12/2006 02:48 PM

The Impact of Mild Stroke on Meaningful Activity and Life Satisfaction

Journal of Stroke and Cerebrovascular Diseases Volume 15, Issue 4 , 8 July 2006, Pages 151-157

Patients with mild stroke are assumed to achieve full recovery with little or no intervention. However, recent studies suggest that such patients may experience persistent disability and difficulty with complex activities.


07/12/2006 02:47 PM

Dysphagia and Nutritional Status at the Time of Hospital Admission for Ischemic Stroke

Journal of Stroke and Cerebrovascular Diseases Volume 15, Issue 4 , 8 July 2006, Pages 164-171

Dysphagia and poor nutritional status occur frequently after stroke; however, potential associations between them are unknown. We evaluated potential associations between dysphagia and poor nutritional status in patients with acute ischemic stroke. Potential associations between these outcomes and more global stroke severity measures were also assessed.


07/11/2006 04:34 PM

Nedd4 WW Domain-Binding Protein 5 Ndfip1 Is Associated with Neuronal Survival after Acute Cortical Brain Injury

The Journal of Neuroscience, July 5, 2006, 26(27):7234-7244

Understanding the transcriptional response to neuronal injury after trauma is a necessary prelude to formulation of therapeutic strategies. We used Serial Analysis of Gene Expression (SAGE) to identify 50,000 sequence tags representing 18,000 expressed genes in the cortex 2 h after traumatic brain injury (TBI). A similar tag library was obtained from sham-operated cortex. The SAGE data were validated on biological replicates using quantitative real-time-PCR on multiple samples at 2, 6, 12, and 24 h after TBI.


07/11/2006 04:32 PM

Impaired Awareness of Deficits and Treatment Adherence Among People With Traumatic Brain Injury or Spinal Cord Injury

Journal of Head Trauma Rehabilitation. Focus on Clinical Research and Practice, Part 2. 21(3):226-235, May/June 2006

To examine the relation between impaired awareness of deficits (IAD) and treatment adherence and to verify previous findings regarding the types of disabilities that people with traumatic brain injury (TBI) tend to underestimate.


07/11/2006 04:30 PM

Healthy Lifestyle and the Risk of Stroke in Women

Arch Intern Med. 2006;166:1403-1409

Healthy lifestyle has been associated with decreased risk of coronary heart disease. In contrast, little is known about its association with stroke risk.


07/11/2006 09:19 AM

Are elevated admission calcium levels associated with better outcomes after ischemic stroke

NEUROLOGY 2006;67:170-173

Calcium (Ca2+) and magnesium (Mg2+) influence the molecular pathways of ischemic neuronal death. The authors evaluated the impact of admission serum Ca2+ and Mg2+ levels, on incident stroke severity and discharge functional outcome. After adjusting for covariates, higher admission Ca2+ was significantly associated with lesser stroke severity and better discharge functional outcome. Admission Mg2+ was not an independent clinical outcome prognosticator.


07/11/2006 09:17 AM

Pilot study of the combination of EGFR and mTOR inhibitors in recurrent malignant gliomas

NEUROLOGY 2006;67:156-158

Malignant gliomas are frequently characterized by amplification of the epidermal growth factor receptor (EGFR) and loss of PTEN tumor suppressor gene. Twenty-eight heavily pretreated patients with recurrent malignant gliomas were administered EGFR inhibitors (gefitinib or erlotinib) in combination with the mTOR (mammalian target of rapamycin) inhibitor sirolimus. The regimens were reasonably well tolerated. Nineteen percent of patients experienced a partial response and 50% had stable disease. Six-month progression-free survival for glioblastoma patients was 25%.


07/11/2006 09:15 AM

CSF levels of growth factors and plasminogen activators in leptomeningeal metastases

NEUROLOGY 2006;67:114-119

To investigate the diagnostic value of transforming growth factor ß1 (TGFß1), vascular endothelial growth factor (VEGF), urokinase-type plasminogen activator (uPA), and tissue-type plasminogen activator (tPA) in CSF for leptomeningeal metastasis (LM).


07/11/2006 09:15 AM

Continuous assessment of electrical epileptic activity in acute stroke

NEUROLOGY 2006;67:99-104

To determine the incidence and risk factors of electrical seizures and other electrical epileptic activity using continuous EEG (cEEG) in patients with acute stroke.


07/11/2006 09:14 AM

Plasma d dimer predicts poor outcome after acute intracerebral hemorrhage

NEUROLOGY 2006;67:94-98

To investigate if systemic d-dimer activation occurs after acute intracerebral hemorrhage (ICH) and to study its influence on clinical outcome.


07/11/2006 09:13 AM

Quality improvement in acute stroke The New York State Stroke Center Designation Project

NEUROLOGY 2006;67:88-93

To determine if stroke center designation and selective triage of acute stroke patients improve quality of care.


07/11/2006 09:12 AM

Progression of white matter lesions and hemorrhages in cerebral amyloid angiopathy

NEUROLOGY 2006;67:83-87

To determine the rate of progression of white matter lesions and hemorrhages in a cohort with cerebral amyloid angiopathy (CAA).


07/11/2006 09:08 AM

Perfusion Magnetic Resonance Imaging Predicts Patient Outcome as an Adjunct to Histopathology A Second Reference Standard in the Surgical and Nonsurgical Treatment of Low grade Gliomas

Neurosurgery. 58(6):1099-1107, June 2006

To determine whether relative cerebral blood volume (rCBV) can predict patient outcome, specifically tumor progression, in low-grade gliomas (LGGs) and thus provide a second reference standard in the surgical and postsurgical management of LGGs.


07/11/2006 09:07 AM

Outcome of Oculomotor Nerve Palsy from Posterior Communicating Artery Aneurysms Comparison of Clipping and Coiling

Neurosurgery. 58(6):1040-1046, June 2006

Recovery of posterior communicating artery aneurysm-induced oculomotor nerve palsy (ONP) after aneurysm coiling has been reported. However, the coil mass may compromise recovery of the nerve. Therefore, we compared the outcome of coiling and clipping for this indication.


07/11/2006 09:06 AM

Intravenous Magnesium versus Nimodipine in the Treatment of Patients with Aneurysmal Subarachnoid Hemorrhage A Randomized Study

Neurosurgery. 58(6):1054-1065, June 2006

07/11/2006 09:04 AM

Hyperglycemia Independently Increases the Risk of Perioperative Stroke Myocardial Infarction and Death after Carotid Endarterectomy

Neurosurgery. 58(6):1066-1073, June 2006

Clinical and experimental evidence suggests that hyperglycemia lowers the neuronal ischemic threshold, potentiates stroke volume in focal ischemia, and is associated with morbidity and mortality in the surgical critical care setting. It remains unknown whether hyperglycemia during carotid endarterectomy (CEA) predisposes patients to perioperative stroke and operative related morbidity and mortality.


07/11/2006 09:02 AM

Thyroid Hormones, Dementia and Atrophy of the Medial Temporal Lobe

The Journal of Clinical Endocrinology & Metabolism Vol. 91, No. 7 2569-2573

Thyroid function has been related to Alzheimer disease (AD), but it remains unclear whether thyroid dysfunction results from or contributes to developing AD.


07/11/2006 09:01 AM

Brain Death Understanding of the Conceptual Basis by Pediatric Intensivists in Canada

Arch Pediatr Adolesc Med. 2006;160:747-752

To determine whether pediatric intensivists in Canada are aware of the controversies regarding the concept of brain death (BD).


07/11/2006 09:00 AM

Postasphyxial Hypoxic Ischemic Encephalopathy in Neonates

Arch Pediatr Adolesc Med. 2006;160:729-736

To construct and validate a model and derive a simple rule that is usable in any birth location for the prediction of outcome of term infants with severe asphyxia.


07/07/2006 10:38 AM

Cognitive Rehabilitation Interventions for Executive Function Moving from Bench to Bedside in Patients with Traumatic Brain Injury

Journal of Cognitive Neuroscience. 2006;18:1212-1222

Executive function mediated by prefrontally driven distributed networks is frequently impaired by traumatic brain injury (TBI) as a result of diffuse axonal injury and focal lesions. In addition to executive cognitive functions such as planning and working memory, the effects of TBI impact social cognition and motivation processes. To encourage application of cognitive neuroscience methods to studying recovery from TBI, associated reorganization of function, and development of interventions, this article reviews the pathophysiology of TBI, critiques currently employed methods of assessing executive function, and evaluates promising interventions that reflect advances in cognitive neuroscience. Brain imaging to identify neural mechanisms mediating executive dysfunction and response to interventions following TBI is also discussed.


07/07/2006 10:36 AM

Cognitive Rehabilitation Interventions for Neglect and Related Disorders Moving from Bench to Bedside in Stroke Patients

Journal of Cognitive Neuroscience. 2006;18:1223-1236

The spatial neglect syndrome, defined by asymmetric attention and action not attributed to primary motor or sensory dysfunction and accompanied by functional disability, is a major cause of post-stroke morbidity. In this review, we consider the challenges and obstacles facing scientific researches wishing to evaluate the mechanisms and effectiveness of rehabilitation interventions. Spatial neglect is a heterogeneous disorder, for which consensus research definitions are not currently available, and it is unclear which of the deficits associated with the syndrome causes subsequent disability. We review current opinion about methods of assessment, suggest a rational approach to selecting therapies which requires further study, and make systems-level and theoretical recommendations for building theory. We lastly review some creative questions for consideration in future research.


07/06/2006 02:56 PM

Age Differences in Fluid Balance and Serum Na and K Levels After Nasogastric Tube Feeding in Stroke Patients Elderly vs Nonelderly

Journal of Parenteral and Enteral Nutrition, Vol. 30, No. 4, 2006 321-330

Enteral nutrition support has been commonly used to improve nutrition status in acute stroke patients. The purpose of this study was to examine whether significant alterations in fluid and serum Na+ and K+ levels due to nasogastric tube feeding depended on patient age.


07/06/2006 02:54 PM

Predictors of Stroke During 911 Calls Opportunities for Improving EMS Response

Prehospital Emergency Care, Volume 10, Number 3, July-September 2006, pp. 369-373(5)

Only 31%-52% of stroke calls are accurately identified by 9-1-1 dispatchers according to prior studies. Recognizing the time-dependent nature of acute stroke, better identification of stroke patients at the time of their 9-1-1 calls may allow an improved prehospital response. We sought to identify any words/phrases that 9-1-1 dispatchers could use to identify more stroke calls.


07/06/2006 02:51 PM

Relation of Prematurity and Brain Injury to Crying Behavior in Infancy

PEDIATRICS Vol. 118 No. 1 July 2006, pp. e57-e65

The objective of this study was to assess crying behavior during infancy in very preterm infants with or without brain injury.


07/06/2006 09:02 AM

Outcomes in TBI With Violent Versus Nonviolent Etiology in a Predominantly Rural Setting

Journal of Head Trauma Rehabilitation. Focus on Clinical Research and Practice, Part 2. 21(3):213-225, May/June 2006

To evaluate differences in outcome in persons with violent versus nonviolent traumatic brain injury (TBI) etiology.


07/06/2006 08:59 AM

Case series Monocular visual loss associated with subarachnoid hemorrhage secondary to ruptured intracranial aneurysms

Canadian Journal of Anesthesia 53:684-689 (2006)

To describe variations in the presentation of monocular visual loss associated with intracranial aneurysm rupture. The clinical course, possible etiologies and management of visual loss in three patients are described.


07/06/2006 08:58 AM

Cognitive impairments in acute lacunar stroke

Acta Neurol Scand 2006: 114: 17-22

The present study investigated the prevalence of cognitive deficits in acute lacunar stroke, validated the Mini Mental State Examination (MMSE) in detecting cognitive impairments in lacunar patients, and identified predictors of such deficits.


07/06/2006 08:57 AM

Continuous EEG monitoring in patients with traumatic brain injury reveals a high incidence of epileptiform activity

Acta Neurol Scand 2006: 114: 47-53

EEG is the only available method for real time monitoring of the brain and is therefore of great interest in the neurointensive care. The present study describes our experiences from implying continuous EEG monitoring as a routine method. We also present EEG patterns observed on patients with traumatic brain injury (TBI).


07/06/2006 08:56 AM

Smoking and non-smoking tobacco as risk factors in subarachnoid haemorrhage

Acta Neurol Scand 2006: 114: 33-37

Swedish snuff is a particular form of non-smoking tobacco with high nicotine content. It is unknown whether this form of tobacco is a risk factor similar to smoking for suffering subarachnoid haemorrhage (SAH). In the present study we report our finding concerning smoking and snuff as risk factors for the disease.


07/06/2006 08:54 AM

The epidemiology of post stroke epilepsy according to stroke subtypes

Acta Neurol Scand 2006: 114: 8-12

Strokes represent the most common etiology of epilepsy in patients over the age of 60?years, with an incidence of 2-4% occurring in different studies. In this observational study, 1,428 patients were included who had stroke and were admitted to our Stroke Unit between the years 1996 and 2005.


07/06/2006 08:53 AM

Valproate induced hyperammonemic encephalopathy

Acta Neurol Scand 2006: 114: 1-7

Valproate-induced hyperammonemic encephalopathy (VHE) is an unusual complication characterized by a decreasing level of consciousness, focal neurological deficits, cognitive slowing, vomiting, drowsiness, and lethargy. We have thoroughly reviewed the predisposing factors and their screening, the biochemical and physiopathological mechanisms involved, the different treatments described, and those that are being investigated. Etiopathogenesis is not completely understood, although hyperammonemia has been postulated as the main cause of the clinical syndrome.


07/06/2006 08:51 AM

Utilisation of diagnostic computerised tomography imaging and immediate clinical outcomes in older people with stroke before and after introduction of the National Service Framework for older people A comparative study of hospital based stroke registry data 1997 2003 Norfolk experience

Age and Ageing 2006 35(4):399-403

How the National Service Framework (NSF) for older people in England might be associated with changes in clinically relevant stroke outcome has not been investigated. We looked for changes in computerised tomography (CT) scan rate, inpatient case-fatality rate (CFR), length of acute hospital stay and discharge destination for older people with stroke, compared with their younger counterparts, for a period before, and after, the introduction of the NSF.


07/06/2006 08:50 AM

A Model for the Pharmacological Treatment of Crouzon Syndrome

Neurosurgery. 59(1):210-215, July 2006

Crouzon syndrome is caused by mutations in fibroblast growth factor receptor 2 (FGFR2) leading to constitutive activation of receptors in the absence of ligand binding. The syndrome is characterized by premature fusion of the cranial sutures that leads to abnormal cranium shape, restricted brain growth, and increased intracranial pressure. Surgical remodeling of the cranial vault is currently used to treat affected infants. The purpose of this study was to develop a pharmacological strategy using tyrosine kinase inhibition as a novel treatment for craniosynostotic syndromes caused by constitutive FGFR activation.


07/06/2006 08:49 AM

Primary Melanocytic Tumor of the Cerebellopontine Angle Mimicking a Vestibular Schwannoma Case Report

Neurosurgery. 59(1):E206, July 2006

The majority of tumors of the cerebellopontine angle (CPA) are benign. We report the case of a primary malignant melanoma of the CPA that mimicked a vestibular schwannoma (acoustic neuroma). We discuss the differential diagnosis and prognosis of melanotic lesions at this location.


07/06/2006 08:47 AM

Spontaneous Intracranial Hypotension Resulting in Coma Case Report

Neurosurgery. 59(1):E204, July 2006

Spontaneous intracranial hypotension is a potentially severe condition characterized by a distinct clinical picture caused by low cerebrospinal fluid pressure. Although coma has been reported previously as a presentation of this condition, this is the first report in which misdiagnosis of this condition and unwarranted surgery led to coma.


07/06/2006 08:46 AM

Continuous Real time Visualization of the Human Cerebral Microcirculation during Arteriovenous Malformation Surgery Using Orthogonal Polarization Spectral Imaging

Neurosurgery. 59(1):167-171, July 2006

After excision of an arteriovenous malformation (AVM), intracerebral hemorrhage or edema can develop, most probably resulting from hyperperfusion. Changes in the perinidal cerebral microvessels probably play a role in the development of this complication but have not been well studied so far. In this study, microvascular changes associated with resection of an AVM were observed and quantified intraoperatively using orthogonal polarization spectral imaging.


07/06/2006 08:45 AM

Alteration of Postural Responses to Visual Field Motion in Mild Traumatic Brain Injury

Neurosurgery. 59(1):134-139, July 2006

Balance deficits in individuals experiencing mild traumatic brain injury have been documented in numerous recent studies. However, long-lasting balance deficits and specific mechanisms causing these deficits have not been systematically examined. This article aimed to present empirical evidence showing destabilizing effects of visual field motion in concussed individuals up to 30 days postinjury.


07/06/2006 08:44 AM

Risk Factors for Adult Nosocomial Meningitis after Craniotomy Role of Antibiotic Prophylaxis

Neurosurgery. 59(1):126-133, July 2006

To evaluate incidence and risk factors of postoperative meningitis, with special emphasis on antibiotic prophylaxis, in a series of 6243 consecutive craniotomies.


07/06/2006 08:43 AM

Intraoperative Language Localization in Multilingual Patients with Gliomas

Neurosurgery. 59(1):115-125, July 2006

Intraoperative localization of speech is problematic in patients who are fluent in different languages. Previous studies have generated various results depending on the series of patients studied, the type of language, and the sensitivity of the tasks applied. It is not clear whether languages are mediated by multiple and separate cortical areas or shared by common areas. Globally considered, previous studies recommended performing a multiple intraoperative mapping for all the languages in which the patient is fluent. The aim of this work was to study the feasibility of performing an intraoperative multiple language mapping in a group of multilingual patients with a glioma undergoing awake craniotomy for tumor removal and to describe the intraoperative cortical and subcortical findings in the area of craniotomy, with the final goal to maximally preserve patients' functional language.



07/06/2006 08:42 AM

Results of Surgical Resection for Progression of Brain Metastases Previously Treated by Gamma Knife Radiosurgery

Neurosurgery. 59(1):86-97, July 2006

To determine treatment outcome after surgical resection for progressive brain metastases after gamma knife radiosurgery (GKR) and to explore the role of dynamic contrast agent-enhanced perfusion magnetic resonance imaging (MRI) and proton spectroscopic MRI studies (MRS/P) in predicting pathological findings.


07/06/2006 08:41 AM

Patient Outcomes after Vestibular Schwannoma Management A Prospective Comparison of Microsurgical Resection and Stereotactic Radiosurgery

Neurosurgery. 59(1):77-85, July 2006

The best management for patients with small- to medium-sized vestibular schwannomas (VS) is controversial.


07/06/2006 08:40 AM

Use of Diffusion Weighted Magnetic Resonance Imaging in Predicting Early Postoperative Outcome of New Neurological Deficits after Brain Tumor Resection

Neurosurgery. 59(1):60-66, July 2006

To study risk factors for the development of postoperative neurological deficits after brain tumor resection and to define prognostic factors for recovery.


07/06/2006 08:39 AM

Postembolization Neurological Deficits in Cerebral Arteriovenous Malformations Stratification by Arteriovenous Malformation Grade

Neurosurgery. 59(1):53-59, July 2006

To stratify the risk of embolization during the treatment of cerebral arteriovenous malformations (AVMs) by grade and to assess its impact on the overall treatment risk.


07/06/2006 08:38 AM

Alterations in Plasma Complement Levels after Human Ischemic Stroke

Neurosurgery. 59(1):28-33, July 2006

Stroke is a leading cause of morbidity and mortality in the United States. Recent animal studies have implicated the complement system in cerebral ischemia/reperfusion injury and suggest that complement inhibition may improve stroke outcomes. To assess the applicability of these findings to humans, we evaluated the characteristics and time course of human complement activation after stroke.


07/06/2006 08:37 AM

Prediction of Symptomatic Vasospasm after Subarachnoid Hemorrhage The Modified Fisher Scale

Neurosurgery. 59(1):21-27, July 2006

We developed a modification of the Fisher computed tomographic rating scale and compared it with the original Fisher scale to determine which scale best predicts symptomatic vasospasm after subarachnoid hemorrhage.


07/01/2006 01:24 PM

Serum cholesterol haemorrhagic stroke ischaemic stroke and myocardial infarction Korean national health system prospective cohort study

BMJ 2006;333:22 (1 July),

To investigate risk factors, such as heavy alcohol consumption, that might explain any increased risk of haemorrhagic stroke associated with low blood cholesterol.


07/01/2006 01:23 PM

Metabolic Cost of Overground Gait in Younger Stroke Patients and Healthy Controls

Medicine & Science in Sports & Exercise. 38(6):1041-1046, June 2006

Locomotor impairment, such as that which may occur following a stroke, results in increased energy expenditure during walking. Previous research quantifying this increased metabolic demand has focused on older people; thus, the aim of this study was to investigate the physiological cost of walking in younger patients following stroke.


07/01/2006 01:22 PM

The role of corticothalamic coupling in human temporal lobe epilepsy

Brain 2006 129(7):1917-1928

The EEG activity of the thalamus and temporal lobe structures (hippocampus, entorhinal cortex and neocortex) was obtained using intracerebral recordings (stereoelectroencephalography, SEEG) performed in patients with TLE seizures undergoing pre-surgical evaluation. Synchrony was studied using a statistical measure of SEEG signal interdependencies (non-linear correlation).


07/01/2006 01:21 PM

Impact of Female Gender on Prognosis in Type 2 Diabetic Patients with Ischemic Stroke

European Neurology 2006;56:6-12

This study assessed gender differences in diabetic patients with ischemic stroke with respect to vascular risk factors, clinical features and early outcome. Ischemic stroke was diagnosed in 261 diabetic women and 300 diabetic men of 2,446 ischemic stroke patients included in a prospective stroke registry over 17 years.


07/01/2006 01:11 PM

Rehabilitation implications of non traumatic subarachnoid haemorrhage

Brain Injury Volume 20, Number 7 / June 2006 679 - 685

Subarachnoid haemorrhage (SAH) remains an important cause of stroke in the rehabilitation population, whose incidence has not been changed by pre-morbid medical treatment. The understanding of the pathophysiological changes that occur after SAH has been more clearly defined, therefore the treatment and outcomes of these patients have undergone drastic changes over the past few years.


07/01/2006 01:10 PM

Challenges associated with the definition and assessment of inappropriate sexual behaviour amongst individuals with an acquired neurological impairment

Brain Injury Volume 20, Number 7 / June 2006 687 - 693

The subject of Inappropriate Sexual Behaviour (ISB) amongst clients with neurological impairment, specifically Acquired Brain Injury (ABI) and dementia, has received limited coverage to date within the literature. This paper discusses some of the problems encountered in the definition and quantification of ISB, in particular the absence of standardized measurement tools to record ISB within an inpatient setting. Whilst ISB is reported to be less prevalent than other behavioural sequelae of brain injury or dementia, it is suggested that its impact on patients and carers can be significant. Ill-defined terminology and the absence of relevant assessment tools add to the specific challenges of understanding and managing ISB within a care or rehabilitation setting. As a result, it is argued that the subjective attitudes of staff and the culture of an institution can dominate the approach taken to dealing with ISB for these client groups.


07/01/2006 01:08 PM

Post traumatic amnesia predicts long term cerebral atrophy in traumatic brain injury

Brain Injury Volume 20, Number 7 / June 2006 695 - 699

To examine post-traumatic amnesia (PTA) and its relation to long-term cerebral atrophy in persons with traumatic brain injury (TBI) using objective indicators of PTA duration and Quantitative Magnetic Resonance Imaging (QMRI). It was hypothesized that longer PTA would predict later generalized atrophy (increased ventricle-to-brain ratio (VBR)). As a guide in assessing patients with TBI, this study determined the probability of developing chronic cerebral atrophy based on PTA duration.


07/01/2006 01:06 PM

Effect of urbanicity of residence on TBI outcome at one year post injury

Brain Injury Volume 20, Number 7 / June 2006 701 - 709

To determine the impact of urbanicity of residence and occurrence of medical complications on outcome after traumatic brain injury (TBI).


07/01/2006 01:03 PM

Breaking the news of traumatic brain injury and incapacities

Brain Injury Volume 20, Number 7 / June 2006 711 - 718

This paper presents research results regarding disclosure of traumatic brain injury (TBI) diagnosis and resulting deficits of a study aiming to investigate the experiences of individuals who had sustained a TBI, their families, the physicians and health professionals involved, from the critical care episodes and subsequent rehabilitation.


07/01/2006 01:02 PM

Work related deaths and traumatic brain injury

Brain Injury Volume 20, Number 7 / June 2006 719 - 724

Traumatic brain injury (TBI) at the workplace is a significant contributor to the number of work-related deaths that occur per year. This study aimed to quantify and characterize these deaths in Ontario.


07/01/2006 01:01 PM

Mild traumatic brain injury Effects on naming in word retrieval and discourse

Brain Injury Volume 20, Number 7 / June 2006 725 - 732

To investigate differences between a group with mild traumatic brain injury (MTBI) and a control group relative to standard scores and error type during word retrieval in both naming and discourse tasks.


07/01/2006 12:59 PM

Symptoms of post traumatic stress Intrusion and avoidance 6 and 12 months after TBI

Brain Injury Volume 20, Number 7 / June 2006 733 - 742

(1) To examine survivors with traumatic brain injury (TBI) for symptoms of avoidance and intrusion, two dimensions of post-traumatic stress (PTS) at 6 and 12 months post-injury. (2) To identify risk factors associated with these symptoms.


07/01/2006 12:58 PM

Establishing a prognosis for functional outcome during coma recovery

Brain Injury Volume 20, Number 7 / June 2006 743 - 758

One of the most challenging tasks for clinicians caring for survivors of severe brain injury (BI) is establishing a prognosis, for long-term functional outcome, while the patient is unconscious. The objective of this article is to report findings regarding the prediction of functional outcomes 1-year after severe BI using data available when the patient is unconscious.


07/01/2006 12:57 PM

Serum S 100B and cleaved tau are poor predictors of long term outcome after mild traumatic brain injury

Brain Injury Volume 20, Number 7 / June 2006 759 - 765

To determine the relationship of serum S-100B and C-tau levels to long-term outcome after mild traumatic brain injury (mild TBI).


07/01/2006 12:54 PM

Post-traumatic growth in acquired brain injury A preliminary small scale study

Brain Injury Volume 20, Number 7 / June 2006 767 - 773

o examine the nature, degree and time course of positive psychological change in people with severe acquired brain injury.


07/01/2006 12:52 PM

Brain injury following neuroleptic malignant syndrome Case report and review of the literature

Brain Injury Volume 20, Number 7 / June 2006 775 - 778

To report a case of brain injury following neuroleptic malignant syndrome (NMS) and review the literature for similar documented cases.


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