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Intracranial pressure monitors

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https://www.readbyqxmd.com/read/28089743/multichannel-visual-evoked-potentials-in-the-assessment-of-visual-pathways-in-children-with-marked-brain-abnormalities
#1
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/28070712/microdialysis-monitoring-in-clinical-traumatic-brain-injury-and-its-role-in-neuroprotective-drug-development
#2
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/28049382/use-of-intracranial-pressure-monitoring-in-bacterial-meningitis-a-10-year-follow-up-on-outcome-and-intracranial-pressure-versus-head-ct-scans
#3
Lykke Larsen, Frantz R Poulsen, Troels H Nielsen, Carl-Henrik Nordström, Mette K Schulz, Åse B Andersen
BACKGROUND: The aim of this study was to evaluate the clinical outcome of patients with severe bacterial meningitis where intracranial pressure (ICP) monitoring has been performed. METHODS: A retrospective observational study including patients admitted 1st(.) January 2005 to 31st(.) December 2014. Thirty nine patients age 18-89 years were included. All the patients received intensive care with mechanical ventilation, ICP monitoring, sedation, antibiotics and corticosteroids according to current guidelines...
January 3, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28035993/brain-monitoring-in-critically-neurologically-impaired-patients
#4
REVIEW
Salazar Jones, Gary Schwartzbauer, Xiaofeng Jia
Assessment of neurologic injury and the evolution of severe neurologic injury is limited in comatose or critically ill patients that lack a reliable neurologic examination. For common yet severe pathologies such as the comatose state after cardiac arrest, aneurysmal subarachnoid hemorrhage (aSAH), and severe traumatic brain injury (TBI), critical medical decisions are made on the basis of the neurologic injury. Decisions regarding active intensive care management, need for neurosurgical intervention, and withdrawal of care, depend on a reliable, high-quality assessment of the true state of neurologic injury, and have traditionally relied on limited assessments such as intracranial pressure monitoring and electroencephalogram...
December 27, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28030638/effects-of-intracranial-pressure-monitoring-on-mortality-in-patients-with-severe-traumatic-brain-injury-a-meta-analysis
#5
Liang Shen, Zhuo Wang, Zhongzhou Su, Sheng Qiu, Jie Xu, Yue Zhou, Ai Yan, Rui Yin, Bin Lu, Xiaohu Nie, Shufa Zhao, Renfu Yan
BACKGROUND: The Brain Trauma Foundation (BTF) guidelines published in 2007 suggest some indications for intracranial pressure (ICP) monitoring in severe traumatic brain injury (TBI). However, some studies had not shown clinical benefit in patients with severe TBI; several studies had even reported that ICP monitoring was associated with an increased mortality rate. The effect of ICP monitoring has remained controversial, regardless of the ICP monitoring guidelines. Here we performed a meta-analysis of published studies to assess the effects of ICP monitoring in patients with severe TBI...
2016: PloS One
https://www.readbyqxmd.com/read/28017745/negative-pressure-hydrocephalus-a-case-report-on-successful-treatment-under-intracranial-pressure-monitoring-with-bilateral-ventriculoperitoneal-shunts
#6
Sajan Pandey, Yi Jin, Liang Gao, Cheng Chen Zhou, Da Ming Cui
Negative pressure hydrocephalus (NegPH), a very rare condition of unknown etiology and optimal treatment, usually presents post neurosurgery with clinical and imaging features of hydrocephalus but with negative cerebrospinal fluid pressure. We here describe a NegPH case of -3 mmHg ICP, that was successfully treated to achieve +5mmHg under continues intracranial pressure monitoring with horizontal positioning; head down and legs elevated to 10-15(o); neck wrapping for controlled venous drainage; chest and abdomen bandage; infusion of 5% dextrose fluid to lower plasma osmolarity (Na(+) 130-135 mmol/L); daily CSF drainage >200 ml; and arterial blood gas PCO2 >40mmHg...
December 22, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/28009240/venous-sinus-stenting-for-reduction-of-intracranial-pressure-in-iih-a-prospective-pilot-study
#7
Kenneth C Liu, Robert M Starke, Christopher R Durst, Tony R Wang, Dale Ding, R Webster Crowley, Steven A Newman
OBJECTIVE Idiopathic intracranial hypertension (IIH) may cause blindness due to elevated intracranial pressure (ICP). Venous sinus stenosis has been identified in select patients, leading to stenting as a potential treatment, but its effects on global ICP have not been completely defined. The purpose of this pilot study was to assess the effects of venous sinus stenting on ICP in a small group of patients with IIH. METHODS Ten patients for whom medical therapy had failed were prospectively followed. Ophthalmological examinations were assessed, and patients with venous sinus stenosis on MR angiography proceeded to catheter angiography, venography with assessment of pressure gradient, and ICP monitoring...
December 23, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28007486/-trends-in-computed-tomography-characteristics-intracranial-pressure-monitoring-and-surgical-management-in-severe-traumatic-brain-injury-analysis-of-a-data-base-of-the-past-25-years-in-a-neurosurgery-department
#8
Pedro A Gómez, Ana M Castaño-León, David Lora, Santiago Cepeda, Alfonso Lagares
OBJECTIVE: To describe the radiological characteristics, surgical indications, procedures, and intracranial pressure monitoring of a representative cohort of severe traumatic brain injury (sTBI) cases collected over the past 25years, and to analyse the changes that have occurred by dividing the period into 3 equal time periods. METHODS: An observational cohort study was conducted on consecutive adult patients (>14years of age) with severe closed TBI (Glasgow Coma Scale score [GCS]≤8) who were admitted during the first 48hours after injury to the Hospital 12 de Octubre from 1987 to 2012...
December 19, 2016: Neurocirugía
https://www.readbyqxmd.com/read/28006941/early-changes-of-brain-perfusion-after-subarachnoid-hemorrhage-the-effect-of-sodium-nitroprusside
#9
M Kolar, K Nohejlova, J Mares, J Pachl
Causes of early hypoperfusion after subarachnoid hemorrhage (SAH) include intracranial hypertension as well as vasoconstriction. The aim of the study was to assess the effect of intracerebroventricular (ICV) administration of sodium nitroprusside (SNP) on early hypoperfusion after SAH. Male Wistar rats (220-240 g) were used, SAH group received 250 microl of fresh autologous arterial blood into the prechiasmatic cistern; sham-operated animals received 250 microl of isotonic solution. Therapeutic intervention: ICV administration of 10 microg SNP; 5 microl 5 % glucose (SNP vehicle) and untreated control...
December 22, 2016: Physiological Research
https://www.readbyqxmd.com/read/28000131/transcranial-doppler-monitoring-of-intracranial-pressure-plateau-waves
#10
Danilo Cardim, Bernhard Schmidt, Chiara Robba, Joseph Donnelly, Corina Puppo, Marek Czosnyka, Peter Smielewski
BACKGROUND: Transcranial Doppler (TCD) has been used to estimate ICP noninvasively (nICP); however, its accuracy varies depending on different types of intracranial hypertension. Given the high specificity of TCD to detect cerebrovascular events, this study aimed to compare four TCD-based nICP methods during plateau waves of ICP. METHODS: A total of 36 plateau waves were identified in 27 patients (traumatic brain injury) with TCD, ICP, and ABP simultaneous recordings...
December 20, 2016: Neurocritical Care
https://www.readbyqxmd.com/read/27998316/decompressive-craniectomy-for-malignant-middle-cerebral-artery-infarction-in-a-16-year-old-boy-a-case-report
#11
Simon Lammy, Paul Fivey, Meharpal Sangra
BACKGROUND: Cryptogenic stroke frequently occurs in younger patients and has a high risk of recurrence. Consequently, secondary prevention is often suboptimal as there is no known risk factor to target. This case demonstrates an unexpected finding of middle cerebral artery infarction and extensive malignant transformation in a 16-year-old boy more than a day post-admission. The lack of a proven culprit lesion makes this case even more intriguing and subsequently raises questions of cryptogenic mechanisms in the context of unrelated trauma...
December 20, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27982555/how-to-manage-blood-pressure-after-brain-injury
#12
Laurent Carteron, Fabio S Taccone, Mauro Oddo
Manipulation of blood pressure (BP) is a mainstay of therapy in patients with acute brain injury (ABI). In the early emergent phase (first hours from injury), depending on intracranial pathology, BP manipulation aims to 1) limit the progression of parenchymal hematomas or hemorrhagic transformation (in patients with ischemic/hemorrhagic stroke and aneurysmal subarachnoid hemorrhage [SAH]), and 2) attenuate hypoperfusion and secondary cerebral ischemic insults (in patients with traumatic brain injury [TBI])...
December 16, 2016: Minerva Anestesiologica
https://www.readbyqxmd.com/read/27956677/effects-of-pneumoperitoneum-and-trendelenburg-position-on-intracranial-pressure-assessed-using-different-non-invasive-methods
#13
C Robba, D Cardim, J Donnelly, A Bertuccio, S Bacigaluppi, N Bragazzi, B Cabella, X Liu, B Matta, M Lattuada, M Czosnyka
BACKGROUND: The laparoscopic approach is becoming increasingly frequent for many different surgical procedures. However, the combination of pneumoperitoneum and Trendelenburg positioning associated with this approach may increase the patient's risk for elevated intracranial pressure (ICP). Given that the gold standard for the measurement of ICP is invasive, little is known about the effect of these common procedures on ICP. METHODS: We prospectively studied 40 patients without any history of cerebral disease who were undergoing laparoscopic procedures...
December 2016: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/27942920/traumatic-elevated-vertex-fracture-with-delayed-increase-in-intracranial-pressure-a-rare-case
#14
Uday Singh Raswan, Sarbjit Singh Chhiber, Altaf U Ramzan
INTRODUCTION: Skull fractures are traditionally classified into linear, comminuted or depressed which can either be simple or compound. A skull fracture where the bone fragment is elevated above the intact skull known as elevated skull fracture has been reported infrequently in literature. CASE PRESENTATION: We report a unique case of simple elevated vertex fracture in a 3-month-old child where the vertex had separated from the calvarium and was elevated above the level of outer table in a patient with delayed neurological deterioration...
December 9, 2016: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27922966/local-coverage-for-acute-severely-herniated-brain-using-scalp-and-forehead-flaps-in-a-pediatric-patient-with-head-trauma
#15
Matthew Brown, Navid Pourtaheri, Kristopher Katira, Sunil Manjila, Ali S Totonchi
A 4-year-old-boy required emergent craniectomy and drainage of a large right-sided acute subdural hematoma after head trauma, during which massive sinus hemorrhage with brain swelling occurred. Acute intraoperative management entailed dural cover using synthetic dural membrane substitute and scalp coverage over the herniated brain using acellular dermal matrix. After intensive monitoring and control of raised intracranial pressure over the next few days, the exposed brain was then covered by scalp and forehead flaps with cadaveric skin grafting to the donor site...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27907960/multimodality-monitoring-illuminating-the-comatose-human-brain
#16
Charles L Francoeur, Margaret Pain, Stephan A Mayer
The field of neurocritical care has evolved tremendously in recent years, a development explained vastly by the advent of neurophysiological monitoring. From basic intracranial pressure measurements to brain tissue oxygenation, microdialysis, cerebral blood flow (CBF), and surface and intracortical electroencephalography (EEG), our ability to detect and control physiologic endpoints of brain function in comatose patients has grown substantially. The integration of these data gave birth to the concept of multimodality monitoring (MMM)...
December 2016: Seminars in Neurology
https://www.readbyqxmd.com/read/27907158/effects-of-exposure-to-blast-overpressure-on-intracranial-pressure-and-blood-brain-barrier-permeability-in-a-rat-model
#17
Usmah Kawoos, Ming Gu, Jason Lankasky, Richard M McCarron, Mikulas Chavko
Exposure to blast overpressure (BOP) activates a cascade of pathological processes including changes in intracranial pressure (ICP) and blood-brain barrier (BBB) permeability resulting in traumatic brain injury (TBI). In this study the effect of single and multiple exposures at two intensities of BOP on changes in ICP and BBB permeability in Sprague-Dawley rats was evaluated. Animals were exposed to a single or three repetitive (separated by 0.5 h) BOPs at 72 kPa or 110 kPa. ICP was monitored continuously via telemetry for 6 days after exposure to BOP...
2016: PloS One
https://www.readbyqxmd.com/read/27906426/continuous-monitoring-of-intracranial-pressure-for-prediction-of-postoperative-complications-of-hypertensive-intracerebral-hemorrhage
#18
S-X Yu, Q-S Zhang, Y Yin, Z Liu, J-M Wu, M-X Yang
OBJECTIVE: This study evaluates the value of continuous dynamic monitoring of intracranial pressure (ICP) in patients with hypertensive intracerebral hemorrhage to predict early postoperative complications. PATIENTS AND METHODS: Data from 80 patients treated in our hospital from February 2014 to February 2015 were analyzed. The patients all underwent decompressive craniectomies, and their ICP changes were monitored invasively and continuously for 1 to 7 days after surgery...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27906037/integrated-therapy-for-hiv-and-cryptococcosis
#19
REVIEW
Sirawat Srichatrapimuk, Somnuek Sungkanuparph
Cryptococcosis has been one of the most common opportunistic infections and causes of mortality among HIV-infected patients, especially in resource-limited countries. Cryptococcal meningitis is the most common form of cryptococcosis. Laboratory diagnosis of cryptococcosis includes direct microscopic examination, isolation of Cryptococcus from a clinical specimen, and detection of cryptococcal antigen. Without appropriate treatment, cryptococcosis is fatal. Early diagnosis and treatment is the key to treatment success...
November 29, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27884843/traumatic-brain-injury-in-england-and-wales-prospective-audit-of-epidemiology-complications-and-standardised-mortality
#20
T Lawrence, A Helmy, O Bouamra, M Woodford, F Lecky, P J Hutchinson
OBJECTIVES: To provide a comprehensive assessment of the management of traumatic brain injury (TBI) relating to epidemiology, complications and standardised mortality across specialist units. DESIGN: The Trauma Audit and Research Network collects data prospectively on patients suffering trauma across England and Wales. We analysed all data collected on patients with TBI between April 2014 and June 2015. SETTING: Data were collected on patients presenting to emergency departments across 187 hospitals including 26 with specialist neurosurgical services, incorporating factors previously identified in the Ps14 multivariate logistic regression (Ps14(n)) model multivariate TBI outcome prediction model...
November 24, 2016: BMJ Open
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