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https://www.readbyqxmd.com/read/29778996/stent-and-flow-diverter-assisted-treatment-of-acutely-ruptured-brain-aneurysms
#1
José E Cohen, J Moshe Gomori, Ronen R Leker, Sergey Spektor, Hosni Abu El Hassan, Eyal Itshayek
OBJECTIVE: We present our experience with stent techniques in the management of acutely ruptured aneurysms, focusing on aneurysm occlusion rates, intraprocedural complications, and late outcomes. METHODS: We retrospectively reviewed the clinical records of patients treated by stent techniques during the early acute phase of aneurysmal rupture, from June 2011 to June 2016. Patients who underwent stenting for the management of unruptured aneurysms, or in a delayed fashion for a ruptured lesion, were excluded...
May 19, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29777892/surgically-treated-de-novo-cervico-medullary-arachnoid-cyst-in-a-symptomatic-adult-patient
#2
William Clifton, Gazanfar Rahmathulla, Kourosh Tavanaiepour, Dunbar Alcindor, George Jakubek, Daryoush Tavanaiepour
Arachnoid cysts are a relatively common finding in adult patients, especially with the advent of advanced imaging techniques. The overall incidence ranges from 1-2%, and the majority are clinically silent1,2 . Arachnoid cysts are postulated to arise by congenital anomalies or trauma1 . De novo formation of arachnoid cysts has been reported, but is exceptionally rare and mostly found in the pediatric population after head trauma3-5 . There have only been two reported cases of symptomatic de novo arachnoid cyst formation in adult patients to date, both with histories of head trauma6,7 ...
May 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29755898/an-unusual-presentation-of-kikuchi-fujimoto-disease-with-recurrent-subdural-effusion
#3
Sara Shahid, Syed H Alam, Indira Hadley
A 24-year-old man complained of a right temporal headache for four weeks. The patient denied any trauma or previous anticoagulation use. He also reported tender right facial swelling. His physical exam was unrevealing except for right cranial nerve (CN) VI palsy, right parotid enlargement, and cervical adenopathy. Laboratory findings were significant for mild leukopenia at 3300 cells/uL. The computed tomography (CT) scan obtained showed a chronic left subdural effusion with a 4 mm midline shift and confirmed right parotid enlargement and cervical lymphadenopathy...
March 10, 2018: Curēus
https://www.readbyqxmd.com/read/29751187/brain-trauma-foundation-guideline-compliance-results-of-a-multidisciplinary-international-survey
#4
Ryan Hirschi, Casey Rommel, Joshua Letsinger, Raminder Nirula, Gregory William John Hawryluk
BACKGROUND: The Brain Trauma Foundation (BTF) guidelines reflect evidence-based best practices in the management of traumatic brain injury (TBI) however compliance varies. OBJECTIVE: To inform self-reported physician compliance and predictors of compliance related to BTF guidelines via an international survey. METHODS: We conducted an international, multidisciplinary survey examining self-reported adherence to the BTF guidelines and multiple factors potentially affecting adherence...
May 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29723241/intra-operative-cerebrospinal-fluid-sampling-versus-post-operative-lumbar-puncture-for-detection-of-leptomeningeal-disease-in-malignant-paediatric-brain-tumours
#5
Sharon Y Y Low, Chen Min Wei, Kenneth T E Chang, Chan Yiong Huak, Ng Lee Ping, Seow Wan Tew, David C Y Low
INTRODUCTION: Leptomeningeal disease is a feared sequelae of malignant paediatric brain tumours. Current methods for its detection is the combined use of cranio-spinal MRI, and CSF cytology from a post-operative lumbar puncture. In this study, the authors hypothesize that CSF taken at the start of surgery, either from an external ventricular drain or neuroendoscope will have equal sensitivity for positive tumour cells, in comparison to lumbar puncture. Secondary hypotheses include positive correlation between CSF cytology and MRI findings of LMD...
2018: PloS One
https://www.readbyqxmd.com/read/29709059/health-worker-migration-and-migrant-healthcare-seeking-cosmopolitanism-in-the-nhs
#6
Arianne Shahvisi
The U.K.'s National Health Service (NHS) is critically reliant on staff from overseas, which means that a sizeable number of U.K. healthcare professionals have received their training at the cost of other states, whose populations are urgently in need of healthcare professionals. At the same time, while healthcare is widely seen as a primary good, many migrants are unable to access the NHS without charge, and anti-immigration political trends are likely to further reduce that access. Both of these topics have received close attention in the global health ethics literature...
April 30, 2018: Bioethics
https://www.readbyqxmd.com/read/29704614/contribution-of-systemic-vascular-effects-to-fmri-activity-in-white-matter
#7
Pinar S Özbay, Catie Chang, Dante Picchioni, Hendrik Mandelkow, Thomas M Moehlman, Miranda G Chappel-Farley, Peter van Gelderen, Jacco A de Zwart, Jeff H Duyn
To investigate a potential contribution of systemic physiology to recently reported BOLD fMRI signals in white matter, we compared photo-plethysmography (PPG) and whole-brain fMRI signals recorded simultaneously during long resting-state scans from an overnight sleep study. We found that intermittent drops in the amplitude of the PPG signal exhibited strong and widespread correlations with the fMRI signal, both in white matter (WM) and in gray matter (GM). The WM signal pattern resembled that seen in previous resting-state fMRI studies and closely tracked the location of medullary veins...
April 25, 2018: NeuroImage
https://www.readbyqxmd.com/read/29702966/the-growth-of-neurosurgery-in-east-africa-challenges
#8
Maria M Santos, Mubashir M Qureshi, Karol P Budohoski, Halinder S Mangat, Japhet G Ngerageza, Karsten Schöller, Hamisi K Shabani, Micaella R Zubkov, Roger Härtl
As the second of 3 articles in this series, the aim of this article is to provide readers with an understanding of the development of neurosurgery in East Africa (foundations), the challenges that arise in providing neurosurgical care in developing countries (challenges), and an overview of traditional and novel approaches to overcoming these challenges and improving health care in the region (innovations). Recognizing the challenges that need to be addressed is the first step to implementing efficient and qualified surgery delivery systems in low- and middle-income countries...
May 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29693258/microvascular-anatomy-of-the-brain-of-the-adult-pipid-frog-xenopus-laevis-daudin-a-scanning-electron-microscopic-study-of-vascular-corrosion-casts
#9
Alois Lametschwandtner, Bernd Minnich
To demonstrate the 3D microvascular anatomy of the brain of the model organism Xenopus laevis Daudin scanning electron microscopy of vascular corrosion casts was correlated with light microscopy of stained 7 µm thick serial tissues sections. Results showed that supplying arteries descended from the leptomeningeal surface without remarkable branchings straight to the subventricular zone where they branched and capillarized. Capillaries showed few H- and/or Y-shaped anastomoses during their centrifugal course toward the leptomeningeal surface where they drained into cerebral venules and veins...
April 25, 2018: Journal of Morphology
https://www.readbyqxmd.com/read/29687712/chitosan-based-polysaccharide-gated-flexible-indium-tin-oxide-synaptic-transistor-with-learning-abilities
#10
Fei Yu, Li Qiang Zhu, Wan Tian Gao, Yang Ming Fu, Hui Xiao, Jian Tao, Ju Mei Zhou
Recently, surrounding friendly electronic devices are attracting increasing interests. "Green" artificial synapses with learning abilities are also interesting for neuromorphic platforms. Here, solution processed chitosan-based polysaccharide electrolyte gated indium tin oxide (ITO) synaptic transistors are fabricated on PET substrate. Good transistor performances against mechanical stress are observed. Short-term synaptic plasticities are mimicked on the proposed ITO synaptic transistor. When applying pre-synaptic and post-synaptic spikes on gate electrode and drain electrode respectively, spiking timing dependent plasticity function is mimicked on the synaptic transistor...
April 24, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29684516/reconsideration-of-neurogenic-pulmonary-oedema-as-a-source-of-metastatic-cerebral-abscess-following-subarachnoid-hemorrhages-a-preliminary-study
#11
Ahmet Gökyar, Mehmet D Aydın, Sevilay Özmen, Elif Demirci, Abdullah H Marangoz, Enis Kuruoğlu, Cengiz Çokluk
BACKGROUND: Subarachnoid hemorrhage (SAH) may be a cause of neurogenic pulmonary edema (NPE). It is well known that lymphatic fluid draining by thoracic duct to lungs consists of many dangerous metabolites, degraded tissue particles and microbiological pathogens. However, there is no enough study which investigates if NPE cause septicemia or not. In this study, we retrospectively examined our experimental materials whether there is a meaningful relationship between the NPE and cerebral abscess formation...
April 20, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29682134/frontal-sinusitis-complicated-by-a-brain-abscess-and-subdural-empyema
#12
Matthew T Niehaus, Kyli N Krape, Shawn M Quinn, Bryan G Kane
A 49-year-old male was brought to the Emergency Department after being found unresponsive. The patient had multiple seizures and was intubated in the prehospital setting. A computed tomography scan showed bilateral paranasal sinus disease, and magnetic resonance imaging showed a right frontal abscess and subdural empyema. Neurosurgery took the patient to the operating room, performed a craniotomy, and drained a large amount of purulent fluid. He was subsequently discharged for acute rehabilitation. Clinicians should consider complicated frontal sinusitis, especially in the undifferentiated patient presenting with neurologic deficits and signs or symptoms of sinus disease...
April 2018: Radiology Case Reports
https://www.readbyqxmd.com/read/29682010/craniofacial-trauma-in-pediatric-patients-following-winnowing-blade-injury-review-of-literature
#13
REVIEW
Harsha Huliyappa, Balakrishna Ojha, Anil Chandra, Sunil Kumar Singh, Chhitij Srivastava
In developing countries, during the harvest season, winnower blade injuries occur very frequently in children and results in lifelong disability. Nine children were managed during 1 month, all resulting due to winnower blade induced craniofacial trauma. PubMed search for "fan blade injury" showed two case series and three case reports. In our study, 88% had compound depressed fracture; brain matter leak in 56%, cerebrospinal fluid (CSF) leak alone in 22%. 66.7% had injury involving the frontal bone...
April 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29663282/the-frozen-brain-state-of-cryptococcus-gattii-a-globe-trotting-tropical-neurotropic-fungus
#14
Paul T Akins, Brian Jian
Initially reported in tropical regions, Cryptococcus gattii infection is now diagnosed globally. METHODS: case report; Literature review. Although initial reports described outbreaks of pulmonary and central nervous system (CNS) disease in tropical regions such as Australia and New Guinea, it is now clear that Cryptococcus gattii is a global, neurotropic pathogen. In contrast with C. neoformans, C. gattii patients are more likely to present with cryptococcomas in the brain and lungs and are often HIV negative...
April 16, 2018: Neurocritical Care
https://www.readbyqxmd.com/read/29660051/resection-of-right-frontal-arteriovenous-malformation-3-dimensional-operative-video
#15
William T Couldwell
The video demonstrates resection of a Grade II Spetzler-Martin unruptured, medium-sized arteriovenous malformation (AVM). A young woman presented with headaches and seizures. The right frontal lesion measured 4.5 cm in largest dimension and had superficial venous drainage. Partial Onyx embolization, primarily of the anterior cerebral feeding arteries, was performed. Bone removal for exposure allowed identification of indentation from the large superficial draining vein. The video demonstrates careful microsurgical dissection on the AVM/brain interface, with selective interruption of feeding arteries circumferentially...
April 11, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29622505/preoperative-lumbar-drainage-placement-for-surgical-cranioplasty
#16
Henrik Giese, Jennifer Meyer, Andreas Unterberg, Christopher Beynon
OBJECTIVE: Intraoperative reduction of cerebrospinal fluid may be required in patients undergoing cranioplasty (CP) surgery, especially in the presence of bulging cranial defects. Direct cannulation of the frontal horn of the lateral ventricle is associated with risks such as intracerebral haemorrhage or postoperative leakage of cerebrospinal fluid. Here we report our initial experiences with preoperative lumbar drain (LD) placement for cranioplasty surgery in patients with bulging cranial defects...
April 2, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29622371/a-reanalysis-of-predictors-for-the-risk-of-hemorrhage-in-brain-arteriovenous-malformation
#17
Zheng Huang, Kang Peng, Changqing Chen, Feiyue Zeng, Junyu Wang, Fenghua Chen
BACKGROUND: Brain arteriovenous malformation (BAVM) is a congenital cerebral vascular disease that characterized with intracranial hemorrhage and epilepsy. It has some risk in current treatments including microsurgery, endovascular, and radiation therapy. Some patients with bAVMs may keep unruptured in their whole life. Whether it should be treated depends on the evaluation of the hemorrhage risk of bAVM. Although previous studies gave many significant predictors, we tried to find some new and more significant predictors in 173 patients with bAVMS by retrospective analysis...
April 2, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29621076/multiple-intracranial-cavernous-angiomas-with-a-trigonal-cavernous-angioma-mimicking-glioma
#18
Jie Wu, Rijun Ren, Zhaoyou Qiu, Maokai Wang
Intracranial cavernous angiomas (CAs) are hamartomatous vascular malformations consisting of thin-walled vascular channels located within the brain, but typically lacking intervening neural parenchyma, large feeding arteries, or draining veins. The CAs occurring in the ventricular system are rare, with an incidence of 2.5% to 10.3% of the intracranial CAs, and those arising from the trigone of the lateral ventricle are even rarer. Till now, there are <20 patients with trigonal CAs have been reported in the English literature...
April 4, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29619904/dynamics-of-evans-blue-clearance-from-cerebrospinal-fluid-into-meningeal-lymphatic-vessels-and-deep-cervical-lymph-nodes
#19
Marcela Maloveska, Jan Danko, Eva Petrovova, Lenka Kresakova, Katarina Vdoviakova, Alena Michalicova, Andrej Kovac, Veronika Cubinkova, Dasa Cizkova
Objectives Recently, it has been confirmed, that excess fluid and waste products from the brain are drained into the cerebrospinal fluid (CSF) and afterwards cleared via the olfactory route and/or lymphatic vessels in the brain dura and corresponding extracranial lymphatic structures. Therefore, the aim of present study was to monitor time-dependent uptake of Evans blue (EB) tracer from subarachnoid space into the meningeal lymphatic vessels and extracranial lymph nodes in rats during 3 hours-12 days. Methods EB was injected into the cisterna magna of anesthetized rats and after required survival, plasma, brain dura matter and corresponding lymph nodes (cervical, thoracic and lumbar) were dissected and processed for lymphatic vessels analyses using immunofluorescence and immunohistochemistry...
April 5, 2018: Neurological Research
https://www.readbyqxmd.com/read/29610928/brain-drains-new-insights-into-brain-clearance-pathways-from-lymphatic-biology
#20
REVIEW
Neil I Bower, Benjamin M Hogan
The lymphatic vasculature act as the drainage system for most of our tissues and organs, clearing interstitial fluid and waste and returning them to the blood circulation. This is not the case for the central nervous system (CNS), which is devoid of parenchymal lymphatic vessels. Nevertheless, the brain is responsible for 25% of the body's metabolism and only compromises 2% of the body's mass. This high metabolic load requires an efficient system to remove waste products and maintain homeostasis. Well-described mechanisms of waste clearance include phagocytic immune cell functions as well as perivascular fluid flow; however, the need for active drainage of waste from the brain is becoming increasingly appreciated...
April 2, 2018: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
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