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https://www.readbyqxmd.com/read/28095378/advanced-neuroimaging-techniques-in-pediatric-hydrocephalus
#1
Smruti K Patel, Weihong Yuan, Francesco T Mangano
From the early days of pneumoencephalography and ventriculography to the emerging technology of magnetic resonance diffusion tensor imaging (DTI) of the present day, neuroimaging has always been a critical tool in the diagnosis and treatment of pediatric hydrocephalus. There is accumulating evidence from both human and animal research suggesting that one of the major pathophysiological mechanisms underlying poor outcomes in these children is damage to vulnerable white matter (WM) structures in the brain as a result of ventricular enlargement and increased intracranial pressure...
January 18, 2017: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28092926/effect-of-gravity-and-microgravity-on-intracranial-pressure
#2
Justin S Lawley, Lonnie G Petersen, Erin J Howden, Satyam Sarma, William K Cornwell, Rong Zhang, Louis A Whitworth, Michael A Williams, Benjamin D Levine
Astronauts have recently been discovered to have impaired vision, with a presentation that resembles syndromes of elevated intracranial pressure (ICP). This syndrome is considered the most mission critical medical problem identified in the past decade of manned spaceflight. We recruited five men and three women who had an Ommaya reservoir inserted for the delivery of prophylactic central nervous system chemotherapy, but were free of their malignant disease for at least 1 year. ICP was assessed by placing a fluid-filled 25 ga butterfly needle into the Ommaya reservoir...
January 16, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28089743/multichannel-visual-evoked-potentials-in-the-assessment-of-visual-pathways-in-children-with-marked-brain-abnormalities
#3
Sian E Handley, Alki C Liasis
PURPOSE: To demonstrate how multichannel visual evoked potentials (VEPs) can provide quantitative measures of visual function in in children with marked cortical anatomy abnormalities. METHODS: Four children with marked brain pathology (2 holoprosencephaly, 2 giant interhemispheric cysts with hydrocephalus) underwent pattern reversal and flash VEP recordings from 16 equally distributed electrodes. Voltage maps of the major VEP components were constructed, and their distributions were compared to the magnetic resonance imaging (MRI) findings...
January 9, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28089421/microbiology-and-treatment-of-brain-abscess
#4
REVIEW
Itzhak Brook
Brain abscess is a focal pyogenic infection of the brain's parenchyma. The most frequent intracranial locations (in descending order of frequency) are: frontal-temporal, frontal-parietal, partial, cerebellar, and occipital lobes. The major predisposing factors are: an associated contiguous focus of infection, trauma, and hematogenous spread from a distant focus. The microbial etiology depends on the site of the primary infection; the patient's age, underlying condition, and immune status; and the geographic location...
January 12, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28088808/shunt-surgery-in-idiopathic-intracranial-hypertension-aided-by-electromagnetic-navigation
#5
Elvis J Hermann, Manolis Polemikos, Hans E Heissler, Joachim K Krauss
BACKGROUND: Idiopathic intracranial hypertension (IIH) is characterized by increased cerebrospinal fluid (CSF) pressure and normal or slit ventricles. Lumboperitoneal shunting had been favored by many investigators for CSF diversion in IIH for decades; however, it has been associated with various side effects. Because of the small ventricular size adequate positioning of a ventricular catheter is challenging. OBJECTIVES: Here, we investigated the usefulness of electromagnetic (EM)-guided ventricular catheter placement for ventriculoperitoneal shunting in IIH...
January 14, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28088798/the-intracranial-b2leed3s-score-and-the-risk-of-intracranial-hemorrhage-in-ischemic-stroke-patients-under-antiplatelet-treatment
#6
Pierre Amarenco, Leila Sissani, Julien Labreuche, Eric Vicaut, Marie Germaine Bousser, Angel Chamorro, Marc Fisher, Ian Ford, Kim M Fox, Michael G Hennerici, Heinrich Mattle, Peter M Rothwell, Philippe Gabriel Steg, Hans-Christoph Diener, Ralph L Sacco, Jacoba P Greving, Ale Algra
BACKGROUND: Chronic antiplatelet therapy in the post-acute phase of non-cardioembolic ischemic stroke is limited by the risk of intracranial hemorrhage (ICH) complications. METHODS: We developed an ICH risk score based on the PERFORM trial cohort (n = 19,100), which included patients with a non-cardioembolic ischemic stroke or transient ischemic attack, and externally validated this score in one contemporary trial of very similar size and inclusion criteria, the PRoFESS trial (n = 20,332 patients)...
January 14, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28087916/-a-case-of-idiopathic-hypertrophic-cranial-pachymeningitis-presenting-as-chronic-subdural-hematoma
#7
Zhan He, Fang Ding, Jiandong Rong, Yongli Gan
A 26-year-old male presented with a 6-day history of paroxysmal headache which was worsen with nausea and vomiting for 1 day. Head CT on admission revealed left chronic subdural hematoma with midline shift. An emergency Burr hole drainage for hematoma was performed. Headache recurred 6 days later. MRI of the brain revealed a diffuse thickening and a gadolinium-enhancement of the falx, cranial dura mater and tentorium cerebelli on the left side with pia mater involved. Lumber puncture showed increased intracranial pressure and elevated IgG level in cerebrospinal fluid...
May 25, 2016: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28087725/neurodevelopmental-outcomes-of-extremely-low-birthweight-infants-randomised-to-different-pco2-targets-the-phelbi-follow-up-study
#8
Ulrich H Thome, Orsolya Genzel-Boroviczeny, Bettina Bohnhorst, Manuel Schmid, Hans Fuchs, Oliver Rohde, Stefan Avenarius, Hans-Georg Topf, Andrea Zimmermann, Dirk Faas, Katharina Timme, Barbara Kleinlein, Horst Buxmann, Wilfried Schenk, Hugo Segerer, Norbert Teig, Annett Bläser, Roland Hentschel, Matthias Heckmann, Rolf Schlösser, Jochen Peters, Rainer Rossi, Wolfgang Rascher, Ralf Böttger, Jürgen Seidenberg, Gesine Hansen, Maria Zernickel, Harald Bode, Jens Dreyhaupt, Rainer Muche, Helmut D Hummler
BACKGROUND: Tolerating higher partial pressures of carbon dioxide (PCO2) in mechanically ventilated extremely low birthweight infants to reduce ventilator-induced lung injury may have long-term neurodevelopmental side effects. This study analyses the results of neurodevelopmental follow-up of infants enrolled in a randomised multicentre trial. METHODS: Infants (n=359) between 400 and 1000 g birth weight and 23 0/7-28 6/7 weeks gestational age who required endotracheal intubation and mechanical ventilation within 24 hours of birth were randomly assigned to high PCO2 or to a control group with mildly elevated PCO2 targets...
January 13, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28087346/patterns-of-retinal-hemorrhage-associated-with-pediatric-cerebral-sinovenous-thrombosis
#9
Gil Binenbaum, Julia E Reid, David L Rogers, Anne Jensen, Lori L Billinghurst, Brian J Forbes
BACKGROUND: Cerebral sinovenous thrombosis (CSVT) has been proposed as an alternative cause of retinal hemorrhage (RH) in children being evaluated for abusive head trauma. This study investigated the prevalence and characteristics of RH in children with CSVT. METHODS: The medical records of children >6 weeks of age with newly diagnosed CSVT and fundus examination by an ophthalmologist were examined retrospectively. Primary outcomes were presence and patterns of RH...
January 10, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28086878/a-case-of-cranium-bifidum-with-meningocele-in-ayrshire-calf
#10
Mosiany Letura Kisipan, Caleb Oburu Orenge, David Njogu Gacheru, Raphael Muchangi Ngure
BACKGROUND: Congenital cranial bone defects predispose to herniation of meninges, sometimes with brain tissue involvement, to form a cerebrospinal fluid (CSF)-filled cyst in the head. Such defects mainly results from focal failure of neural tube closure during fetal development and has been reported in various species of domestic mammals. CASE PRESENTATION: A one week old Ayrshire calf with a fluctuant swelling on parieto-occipital region of the head was referred to the faculty...
January 13, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28079681/internal-jugular-vein-compression-a-novel-approach-to-mitigate-blast-induced-hearing-injury
#11
Brian Sindelar, Michael Shinners, Sydney Sherman, Kevin Novak, Kristine Erickson, Vimal Patel, Paul Kubilis, David Smith, John Finan, Julian E Bailes
HYPOTHESIS: Internal jugular vein (IJV) compression before blast injury will lead to reduced risk of traumatic hearing injury following exposure to a blast injury. BACKGROUND: IJV compression and its effects on not only intracranial, but also intracochlear pressure may potentiate blast induced hearing injury, therefore, precluding its use as a prophylactic therapy for blast induced traumatic brain injury. METHODS: Twenty Sprague Dawley rats were exposed to a 17...
January 10, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28070712/microdialysis-monitoring-in-clinical-traumatic-brain-injury-and-its-role-in-neuroprotective-drug-development
#12
Eric Peter Thelin, Keri L H Carpenter, Peter J Hutchinson, Adel Helmy
Injuries to the central nervous system continue to be vast contributors to morbidity and mortality; specifically, traumatic brain injury (TBI) is the most common cause of death during the first four decades of life. Several modalities are used to monitor patients suffering from TBI in order to prevent detrimental secondary injuries. The microdialysis (MD) technique, introduced during the 1990s, presents the treating physician with a robust monitoring tool for brain chemistry in addition to conventional intracranial pressure monitoring...
January 9, 2017: AAPS Journal
https://www.readbyqxmd.com/read/28069320/mild-induced-hypothermia-for-patients-with-severe-traumatic-brain-injury-after-decompressive-craniectomy
#13
Chunhai Tang, Yun Bao, Min Qi, Lizhi Zhou, Fan Liu, Jian Mao, Qingmei Lei, Songtao Qi, Binghui Qiu
PURPOSE: To evaluate the efficacy and safety of mild induced hypothermia for intracranial hypertension in patients with traumatic brain injury after decompressive craniectomy. METHODS: A total of 60 adults with intracranial pressure (ICP) of more than 20 mm Hg after decompressive craniectomy were randomly assigned to standard care (control group) or hypothermia (32°C-35°C) plus standard care. Then, ICP, cerebral perfusion pressure, Glasgow Outcome Scale score, and complications were assessed...
December 29, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/28067615/intracranial-atherosclerosis-from-anatomy-to-pathophysiology
#14
Yuehua Pu, Linfang Lan, Xinyi Leng, Lawrence Ks Wong, Liping Liu
Background Intracranial atherosclerotic stenosis is an important etiology subtype of ischemic stroke. Stenosis severity was thought to be the main reference index for clinical treatment and research. However, stenosis could not reflect the ischemia risk completely, instead the hemodynamic state across the lesion, the extent of collateral circulation, and perfusion impairment downstream the stenosis are more important. Aims We write this review aimed to summarize novel angiographic methods applied in the evaluation of functional severity of ICAS, and commented on their limitations and prospects in future research...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28067614/experimental-determination-of-rupture-pressure-and-stress-of-adventitia-of-human-middle-cerebral-arteries
#15
Adam Piechna, Leszek Lombarski, Bogdan Ciszek, Krzysztof Cieslicki
Background Intracranial arterial dissections might be attributed to the particular biomechanical properties of their specific layers. Also, knowledge of adventitia properties would be crucial in the context of intracranial balloon angioplasty. Aims The purpose of this work was to determine the rupture pressure of separated adventitia and compare it to intact cerebral arterial segments. Methods Brain specimens were harvested from 14 autopsy subjects (age range from 23 to 86 years). Pressure-inflation tests were conducted on proximal segments of middle cerebral arteries and separated adventitia layers from contralateral arteries to assess the rupture pressure values...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28065791/the-neuroprotective-strategic-analysis-for-patients-with-acute-myocardial-infarction-combined-with-hypoxic-ischemic-encephalopathy-in-icu
#16
Yali Chao, Weiwei Hu, Xiaojuan Geng
BACKGROUND: We conducted this study to investigate the neuroprotective treatment strategies for patients with acute myocardial infarction (AMI) complicated with hypoxic ischemic encephalopathy (HIE) in the ICU. METHODS: A total of 83 cases that were diagnosed with secondary AMI for the first time were selected and divided into observation group (n=43) and the control group (n=40). All of patients underwent emergency or elective PCI. Patients in the control group were treated with mannitol to reduce intracranial pressure, cinepazide maleate to improve microcirculation in the brain and also given comprehensive treatments of oxygen inhalation, fluid infusion, acid-base imbalance correction, electrolyte disturbance, etc...
January 5, 2017: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/28064284/surgery-modified-pi-with-triple-bonnet-flap-and-fronto-orbital-advancement
#17
Uday Singh Raswan, Sarbjit Singh Chhiber, Altaf Umar Ramzan
INTRODUCTION: Craniosynostosis is the premature fusion of one or more of the cranial sutures and can occur as part of a syndrome or as an isolated defect. Pansynostosis is a rare form of craniosynostosis that involves premature fusion of all the cranial sutures (coronal, sagittal, metopic, and occipital). Particularly in cases of late presentation, there are heightened clinical concerns, both functional and aesthetic. In untreated cases of pansynostosis and increased intracranial pressure, optic nerve damage progresses to optic atrophy and then blindness...
January 7, 2017: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28063881/early-stage-alterations-of-catecholamine-and-adrenocorticotropic-hormone-levels-in-posttraumatic-acute-diffuse-brain-swelling
#18
Weiqiang Chen, Jiangtao Sheng, Guoyi Peng, Jinhua Yang, Shousen Wang, Kangsheng Li
Posttraumatic acute diffuse brain swelling (PADBS) is characterized by serious brain bulk enlargement rapidly following trauma and is a major cause of elevated intracranial pressure and thus mortality. The pathogenesis of PADBS is not clearly understood, and the early stage alterations of catecholamine (CA) and adrenocorticotropic hormone (ACTH) levels in PADBS also remain largely unknown. The objective of this study was to investigate CA and ACTH levels in the patients with PADBS in the early stage and discuss the possible roles CA and ACTH in the pathogenesis of PADBS...
January 4, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28061916/intracranial-and-intraocular-pressure-during-various-degrees-of-head-down-tilt
#19
Karina Marshall-Goebel, Edwin Mulder, Eric Bershad, Charles Laing, Anders Eklund, Jan Malm, Claudia Stern, Jörn Rittweger
BACKGROUND: More than half of astronauts develop ophthalmic changes during long-duration spaceflight consistent with an abnormal intraocular and intracranial pressure (IOP, ICP) difference. The aim of our study was to assess IOP and ICP during head-down tilt (HDT) and the additive or attenuating effects of 1% CO2 and lower body negative pressure (LBNP). METHODS: In Experiment I, IOP and ICP were measured in nine healthy subjects after 3.5 h HDT in five conditions: -6°, -12°, and -18° HDT, -12° with 1% CO2, and -12° with -20 mmHg LBNP...
January 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28060220/predictive-factors-that-may-contribute-to-secondary-insults-with-nursing-interventions-in-adults-with-traumatic-brain-injury
#20
Lena Nyholm, Tim Howells, Per Enblad
BACKGROUND: Nursing interventions pose risks and benefits to patients with traumatic brain injury at a neurointensive care unit. OBJECTIVES: The aim of this study was to investigate the risk of inducing high intracranial pressure (ICP) related to interventions and whether intracranial compliance, baseline ICP, or autoregulation could be used as predictors. METHODS: The study had a quantitative, prospective, observational design. Twenty-eight patients with TBI were included, and 67 interventions were observed...
February 2017: Journal of Neuroscience Nursing: Journal of the American Association of Neuroscience Nurses
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