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Intracranial pressure monitors

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https://www.readbyqxmd.com/read/28925731/detection-of-metabolic-pattern-following-decompressive-craniectomy-in-severe-traumatic-brain-injury-a-microdialysis-study
#1
Deepak Gupta, Raghav Singla, Anna T Mazzeo, Eric B Schnieder, Vivek Tandon, S S Kale, A K Mahapatra
OBJECTIVE: The aim of the study was to detect mitochondrial dysfunction and ischaemia in severe traumatic brain injury and their relationship with outcome. METHODS: Forty-one patients with severe traumatic brain injury (TBI) who underwent decompressive craniectomy were prospectively monitored with intracerebral microdialysis catheters (MD). Variables related to energy metabolism were studied using microdialysis. RESULTS: Twentysix patients (63...
September 19, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28922874/noninvasive-transfontanelle-monitoring-of-the-intracerebral-pressure-in-comparison-with-an-invasive-intradural-intracranial-pressure-device-a-prospective-study
#2
Bedjan Behmanesh, Marco Bartels, Florian Gessler, Natalie Filmann, Volker Seifert, Matthias Setzer, Thomas M Freiman
BACKGROUND: We previously introduced a novel noninvasive technique of intracranial pressure (ICP) monitoring in children with open fontanelles. OBJECTIVE: To compare the ICP obtained by our new technique to the ICP derived from an intradurally implanted ICP measurement device (external ventricular drain, subdural ICP device). METHODS: Children with open fontanelles and need of intracranial monitoring were included in this study. A standard ICP probe was placed upon the frontal fontanelle and data were compared with the values recorded by an already invasively implanted subdural ICP technique...
October 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28904465/spectrum-of-visual-impairment-in-cerebral-venous-thrombosis-importance-of-tailoring-therapies-based-on-pathophysiology
#3
Sanjith Aaron, Anupriya Arthur, A T Prabakhar, Pavitra Mannam, N K Shyamkumar, Sunithi Mani, Vivek Mathew, Jeyanthi Peter, Ajith Sivadasan, Anika Alexander, M Karthik, Rohith Ninan Benjamin, Mathew Alexander
Visual impairment can complicate cerebral venous thrombosis (CVT). Here, we describe the various pathophysiological mechanisms and treatments available. A retrospective chart review of all patients treated for CVT in a large quaternary teaching hospital was done, and cases with visual impairment due to CVT were identified. The various mechanisms causing visual impairment in CVT were (1) raised intracranial pressure (ICP) caused by venous thrombosis without venous infarcts resulting in a benign intracranial hypertension-like presentation of CVT, (2) venous infarcts involving the occipital cortex, (3) raised ICP following the development of a secondary dural arteriovenous (AV) fistula, and (4) arterial occipital infarcts due to posterior cerebral artery compression secondary to herniation in large venous infarcts...
July 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28904458/can-transcranial-color-doppler-spectral-signatures-be-a-novel-biomarker-for-monitoring-cerebrovascular-autoregulation-and-intracranial-pressure-a-speculative-synthesis
#4
Sandhya Mangalore, Kotresh, Rakshith Srinivasa, Alangar Sathyaranjandas Hegde, Rangashetty Srinivasa
BACKGROUND: Trans Cranial Colour Doppler (TCCD) has been extensively used in various neurological and neurosurgical conditions causing severe raise in the intracranial pressure (ICP). MATERIAL AND METHOD: Our study explores the sequential evolution of TCCD flow pattern by correlating with pupillary reactivity, Glasgow coma scale (GCS), and imaging. Our cohort consisted of thirty patients with ten patients in each subgroup admitted to the neuro-Intensive Care Unit (NICU) for various neurological and neurosurgical causes...
July 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28902893/correlation-of-optic-nerve-sheath-diameter-with-directly-measured-intracranial-pressure-in-korean-adults-using-bedside-ultrasonography
#5
Jin Pyeong Jeon, Si Un Lee, Sung-Eun Kim, Suk Hyung Kang, Jin Seo Yang, Hyuk Jai Choi, Yong Jun Cho, Seung Pil Ban, Hyoung Soo Byoun, Young Soo Kim
OBJECTIVES: The correlation of optic nerve sheath diameter (ONSD) as seen on ultrasonography (US) and directly measured intracranial pressure (ICP) has been well described. Nevertheless, differences in ethnicity and type of ICP monitor used are obstacles to the interpretation. Therefore, we investigated the direct correlation between ONSD and ventricular ICP and defined an optimal cut-off point for identifying increased ICP (IICP) in Korean adults with brain lesions. METHODS: This prospective study included patients who required an external ventricular drainage (EVD) catheter for ICP control...
2017: PloS One
https://www.readbyqxmd.com/read/28894592/changes-in-delta-adc-reflect-intracranial-pressure-changes-in-craniosynostosis
#6
Yuko Takahashi, Masaaki Hori, Kazuaki Shimoji, Masakazu Miyajima, Osamu Akiyama, Hajime Arai, Shigeki Aoki
BACKGROUND: In patients with craniosynostosis, intracranial pressure (ICP) has been reported to increase even in the absence of overt symptoms. The early and non-invasive detection of intracranial hypertension is important for reducing the risk of abnormal brain development in pediatric patients. PURPOSE: To assess whether the apparent diffusion coefficient (ADC) of white matter during the cardiac cycle (ΔADC) would change after surgery to relieve ICP in children with craniosynostosis...
September 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28894164/investigating-the-relationship-between-cerebrospinal-fluid-and-magnetic-induction-phase-shift-in-rabbit-intracerebral-hematoma-expansion-monitoring-by-mri
#7
Mingsheng Chen, Qingguang Yan, Jian Sun, Gui Jin, Mingxin Qin
In a prior study of intracerebral hemorrhage monitoring using magnetic induction phase shift (MIPS), we found that MIPS signal changes occurred prior to those seen with intracranial pressure. However, the characteristic MIPS alert is not yet fully explained. Combining the brain physiology and MIPS theory, we propose that cerebrospinal fluid (CSF) may be the primary factor that leads to hematoma expansion being alerted by MIPS earlier than with intracranial pressure monitoring. This paper investigates the relationship between CSF and MIPS in monitoring of rabbit intracerebral hemorrhage models, which is based on the MIPS measurements data, the quantified data on CSF from medical images and the amount of injected blood in the rabbit intracerebral hemorrhage model...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28880397/transcranial-doppler-a-stethoscope-for-the-brain-neurocritical-care-use
#8
REVIEW
Chiara Robba, Danilo Cardim, Mypinder Sekhon, Karol Budohoski, Marek Czosnyka
Transcranial Doppler (TCD) ultrasonography is a noninvasive bedside monitoring technique that can evaluate cerebral blood flow hemodynamics in the intracranial arterial vasculature. TCD allows assessment of linear cerebral blood flow velocity, with a high temporal resolution and is inexpensive, reproducible, and portable. The aim of this review is to provide an overview of the most commonly used TCD derived signals and measurements used commonly in neurocritical care. We describe both basic (flow velocity, pulsatility index) and advanced concepts, including critical closing pressure, wall tension, autoregulation, noninvasive intracranial pressure, brain compliance, and cerebrovascular time constant; we also describe the clinical applications of TCD to highlight their utility in the diagnosis and monitoring of cerebrovascular diseases as the "stethoscope for the brain...
September 7, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28874206/variation-in-monitoring-and-treatment-policies-for-intracranial-hypertension-in-traumatic-brain-injury-a-survey-in-66-neurotrauma-centers-participating-in-the-center-tbi-study
#9
Maryse C Cnossen, Jilske A Huijben, Mathieu van der Jagt, Victor Volovici, Thomas van Essen, Suzanne Polinder, David Nelson, Ari Ercole, Nino Stocchetti, Giuseppe Citerio, Wilco C Peul, Andrew I R Maas, David Menon, Ewout W Steyerberg, Hester F Lingsma
BACKGROUND: No definitive evidence exists on how intracranial hypertension should be treated in patients with traumatic brain injury (TBI). It is therefore likely that centers and practitioners individually balance potential benefits and risks of different intracranial pressure (ICP) management strategies, resulting in practice variation. The aim of this study was to examine variation in monitoring and treatment policies for intracranial hypertension in patients with TBI. METHODS: A 29-item survey on ICP monitoring and treatment was developed on the basis of literature and expert opinion, and it was pilot-tested in 16 centers...
September 6, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28872457/feature-clustering-of-intracranial-pressure-time-series-for-an-alarm-function-estimation-in-traumatic-brain-injury
#10
Michal Teplan, Ivan Bajla, Roman Rosipal, Martin Rusnák
The guidelines for the management of Traumatic Brain Injury (TBI) recommend that IntraCranial Presure (ICP) should be monitored in all salvageable patients with severe TBI, albeit this quantity cannot identify the specific mechanisms of pressure elevation. The conventional application of ICP monitoring consists merely in acquisition of ICP values in discrete time and their comparison to the established ICP threshold. The excess of this threshold triggers the special emergency treatment protocol...
September 5, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28871418/time-spent-with-impaired-autoregulation-is-linked-with-outcome-in-severe-infant-paediatric-traumatic-brain-injury
#11
Konstantin Hockel, Jennifer Diedler, Felix Neunhoeffer, Ellen Heimberg, Carmen Nagel, Martin U Schuhmann
BACKGROUND: It could be shown in traumatic brain injury (TBI) in adults that the functional status of cerebrovascular autoregulation (AR), determined by the pressure reactivity index (PRx), correlates to and even predicts outcome. We investigated PRx, cerebral perfusion pressure (CPP) and intracranial pressure (ICP) and their correlation to outcome in severe infant and paediatric TBI. METHODS: Seventeen patients (range, 1 day to 14 years) with severe TBI (median GCS at presentation, 4) underwent long-term computerised ICP and mean arterial pressure (MAP) monitoring using dedicated software to determine CPP and PRx and optimal CPP (CPP level where PRx shows best autoregulation) continuously...
September 4, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28866058/surgical-fat-patch-improves-secondary-intracranial-hypotension-orthostatic-headache-associated-with-lumbosacral-dural-ectasia-case-report
#12
Beretta Elena, Franzini Andrea, Cordella Roberto, Nazzi Vittoria, Valentini Laura Grazia, Franzini Angelo
BACKGROUND: Secondary intracranial hypotension is a clinical syndrome associated with the reduction of the cerebrospinal fluid volume and dural continuity violation. The main symptoms are orthostatic headache associated with nausea, vomiting, diplopia, dizziness and tinnitus. The treatment is usually non-specific. CASE DESCRIPTION: The authors describe the case of a 37-years-old woman who developed secondary intracranial hypotension caused by lumbosacral iatrogenic dural ectasia following de-tethering surgery...
August 30, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28860105/ascertaining-the-value-of-noninvasive-measures-obtained-using-color-duplex-ultrasound-and-central-aortic-pressure-monitoring-during-the-management-of-cerebral-arteriovenous-malformation-resection-protocol-for-a-prospective-case-control-pilot-study
#13
Kathryn J Busch, Hosen Kiat
BACKGROUND: Dramatic hemodynamic changes occur upon removal of an arteriovenous malformation of the brain (bAVM) with a number of potentially serious perioperative complications, such as intracranial hemorrhage and venous occlusive hypertensive syndrome. As these complications largely occur in the postoperative inpatient period, a rapid, repeatable noninvasive investigation to serially monitor relevant intracranial hemodynamics may be of benefit. Though, transcranial Doppler (TCD) and transcranial color duplex (TCCD) are techniques used and available to provide hemodynamic measurements postoperatively, the time course of hemodynamic sequences following bAVM resection remains uncertain...
August 31, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28846763/functional-outcome-after-intracranial-pressure-monitoring-for-children-with-severe-traumatic-brain-injury
#14
Tellen D Bennett, Peter E DeWitt, Tom H Greene, Rajendu Srivastava, Jay Riva-Cambrin, Michael L Nance, Susan L Bratton, Desmond K Runyan, J Michael Dean, Heather T Keenan
Importance: Intracranial pressure (ICP) monitoring is a mainstay of therapy for children with traumatic brain injury (TBI), but its overall association with patient outcome is unclear. Objective: To test the hypothesis that ICP monitoring is associated with improved functional survival of children with severe TBI. Design, Setting, and Participants: A propensity-weighted effectiveness analysis was conducted using 2 linked national databases with data from 30 US children's hospitals from January 1, 2007, to December 31, 2012, on 3084 children with severe TBI...
August 28, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/28846750/big-data-not-yet-big-enough-to-determine-the-influence-of-intracranial-pressure-monitoring-on-outcome-in-children-with-severe-traumatic-brain-injury
#15
Christopher M Horvat, Patrick M Kochanek
No abstract text is available yet for this article.
August 28, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/28841620/a-treatment-algorithm-for-patients-presenting-with-sagittal-craniosynostosis-after-the-age-of-1-year
#16
Edward J Ruane, Catharine B Garland, Liliana Camison, Regina A Fenton, Ken K Nischal, Ian F Pollack, Mandeep S Tamber, Lorelei J Grunwaldt, Joseph E Losee, Jesse A Goldstein
BACKGROUND: Sagittal craniosynostosis typically presents shortly after birth, with a scaphocephalic head shape, and is addressed surgically for functional and aesthetic concerns. This study highlights the authors' experience with a challenging patient population: those with phenotypically mild, missed, and late-developing sagittal craniosynostosis. METHODS: A prospective cohort study was conducted for all cases of sagittal craniosynostosis presenting to the authors' institution between July of 2013 and December of 2015...
September 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28838819/pediatric-idiopathic-intracranial-hypertension-is-the-fixed-threshold-value-of-elevated-lp-opening-pressure-set-too-high
#17
Lucia Gerstl, Nikola Schoppe, Lucia Albers, Birgit Ertl-Wagner, Noam Alperin, Oliver Ehrt, Andreas Pomschar, Mirjam N Landgraf, Florian Heinen
BACKGROUND: Idiopathic intracranial hypertension (IIH) in children is a rare condition of unknown etiology and various clinical presentations. The primary aim of this study was to evaluate if our pediatric IIH study group fulfilled the revised diagnostic criteria for IIH published in 2013, particularly with regard to clinical presentation and threshold value of an elevated lumbar puncture opening pressure. Additionally we investigated the potential utilization of MR-based and fundoscopic methods of estimating intracranial pressure for improved diagnosis...
August 12, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28830738/mastoid-epidermoid-tumor-and-associated-dural-arteriovenous-fistula-with-venous-sinus-occlusion
#18
Jang W Yoon, Youssef J Hamade, Ramon Navarro, Benjamin L Brown, Larry Lundy, Rabih G Tawk
BACKGROUND: Dural arteriovenous fistula (DAVF) is an abnormal vascular connection between arterial and venous channels within dura mater. Although DAVFs have been linked to other types of intracranial tumors, this is the first case reporting the association between DAVF and an epidermoid tumor. CASE DESCRIPTION: A middle aged patient with chronic headache presented with Borden type II DAVF draining into the right transverse sigmoid junction, and was also found to have an epidermoid tumor over the right mastoid...
August 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28829632/frequency-of-and-factors-associated-with-emergency-department-intracranial-pressure-monitor-placement-in-severe-paediatric-traumatic-brain-injury
#19
Nithya Kannan, Alex Quistberg, Jin Wang, Jonathan I Groner, Richard B Mink, Mark S Wainwright, Michael J Bell, Christopher C Giza, Douglas F Zatzick, Richard G Ellenbogen, Linda Ng Boyle, Pamela H Mitchell, Monica S Vavilala
OBJECTIVE: To examine the frequency of and factors associated with emergency department (ED) intracranial pressure (ICP) monitor placement in severe paediatric traumatic brain injury (TBI). METHODS: Retrospective, multicentre cohort study of children <18 years admitted to the ED with severe TBI and intubated for >48 hours from 2007 to 2011. RESULTS: Two hundred and twenty-four children had severe TBI and 75% underwent either ED, operating room (OR) or paediatric intensive care unit (PICU) ICP monitor placement...
August 22, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28819737/further-controversies-about-brain-tissue-oxygenation-pressure-reactivity-after-traumatic-brain-injury
#20
Morten Andresen, Joseph Donnelly, Marcel Aries, Marianne Juhler, David Menon, Pja Hutchinson, Peter Smielewski
BACKGROUND: Continuous monitoring of cerebral autoregulation is considered clinically useful due to its ability to warn against brain ischemic insults, which may translate to a relationship with adverse outcome. It is typically performed using the pressure reactivity index (PRx) based on mean arterial pressure and intracranial pressure. A new ORx index based on brain tissue oxygenation and cerebral perfusion pressure (CPP) has been proposed that similarly allows for evaluation of cerebrovascular reactivity...
August 17, 2017: Neurocritical Care
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