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Intracranial pressure monitors

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https://www.readbyqxmd.com/read/28806347/pediatric-pseudotumor-cerebri-syndrome
#1
Paul H Phillips, Claire A Sheldon
Idiopathic intracranial hypertension, otherwise known as primary pseudotumor cerebri syndrome (PTCS), most frequently occurs in obese women of childbearing age. However, children may be affected as well. This review will address recent findings regarding demographics, diagnosis, and treatment of pediatric PTCS. Prepubertal children with primary PTCS have an equal sex distribution and less frequent obesity compared with adult patients. However, female gender and obesity are risk factors for primary PTCS in postpubertal children...
September 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28806189/the-use-of-optical-coherence-tomography-in-neuro-ophthalmology
#2
Noel C Y Chan, Carmen K M Chan
PURPOSE OF REVIEW: In the last decade, with the advances of optical coherence tomography (OCT) technology, different imaging protocols and analysis algorithms have been introduced to maximize the potential of this diagnostic tool in the evaluation of different eye diseases. This review aims to provide an update on these additional features, with respect to the management of a diverse range of neuro-ophthalmologic conditions. RECENT FINDINGS: Macular ganglion cell complex (mGCC) analysis has been shown to be superior to peripapillary retinal nerve fiber layer (pRNFL) analysis in certain settings, such as differentiating Leber's hereditary optic neuropathy from functional visual loss; monitoring neurodegenerative diseases or multiple sclerosis; and predicting visual loss in nonarteritic ischemic optic neuropathy...
August 12, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28801417/optic-nerve-sheath-diameter-sonography-for-the-diagnosis-of-increased-intracranial-pressure-a-systematic-review-and-meta-analysis-protocol
#3
Alex Koziarz, Niv Sne, Fraser Kegel, Waleed Alhazzani, Siddharth Nath, Jetan H Badhiwala, Timothy Rice, Paul Engels, Faidi Samir, Andrew Healey, Kamyar Kahnamoui, Laura Banfield, Sunjay Sharma, Kesava Reddy, Gregory W J Hawryluk, Andrew W Kirkpatrick, Saleh A Almenawer
INTRODUCTION: Increased intracranial pressure (ICP) is a significant neurological issue that may lead to permanent neurological sequelae. When evaluating patients with traumatic brain injury, it is crucial to identify those with high ICP in order to expedite ICP lowering measures and maintain adequate cerebral perfusion. Several measures are used to recognise patients with increased ICP including CT scan, MRI, ICP monitor, and lumbar puncture (LP). However, these tests can be invasive, associated with radiation exposure, contraindicated, or not readily available...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28799879/the-pathophysiology-of-chronic-noncommunicating-hydrocephalus-lessons-from-continuous-intracranial-pressure-monitoring-and-ventricular-infusion-testing
#4
Per Kristian Eide
OBJECTIVE The pathophysiology of chronic noncommunicating hydrocephalus (ncHC) is poorly understood. This present study explored whether lessons about the pathophysiology of this clinical entity might be retrieved from results of overnight monitoring of pulsatile and static intracranial pressure (ICP) and ventricular infusion testing. METHODS The study cohort included adult patients (> 20 years of age) with chronic ncHC due to aqueductal stenosis in whom symptoms had lasted a minimum of 6 months. A reference cohort consisted of age- and sex-matched patients managed for communicating HC (cHC)...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799016/intraparenchymal-intracranial-pressure-monitoring-for-hydrocephalus-and-cerebrospinal-fluid-disorders
#5
Aswin Chari, Debayan Dasgupta, Alexander Smedley, Claudia Craven, Edward Dyson, Samir Matloob, Simon Thompson, Lewis Thorne, Ahmed K Toma, Laurence Watkins
BACKGROUND: Elective intraparenchymal intracranial pressure (ICP) monitoring is useful for the diagnosis and treatment of hydrocephalus and cerebrospinal fluid (CSF) disorders. This retrospective study analyzes median ICP and pulse amplitude (PA) recordings in neurosurgically naïve patients undergoing elective ICP monitoring for suspected CSF disorders. METHODS: Retrospective review of prospectively collated database of neurosurgically naïve patients undergoing elective ICP monitoring for suspected hydrocephalus and CSF disorders...
August 10, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28793057/noninvasive-intracranial-pressure-monitoring-for-hiv-associated-cryptococcal-meningitis
#6
V R Bollela, G Frigieri, F C Vilar, D L Spavieri, F J Tallarico, G M Tallarico, R A P Andrade, T M de Haes, O M Takayanagui, A M Catai, S Mascarenhas
Mortality and adverse neurologic sequelae from HIV-associated cryptococcal meningitis (HIV-CM) remains high due to raised intracranial pressure (ICP) complications. Cerebrospinal fluid (CSF) high opening pressure occurs in more than 50% of HIV-CM patients. Repeated lumbar puncture with CSF drainage and external lumbar drainage might be required in the management of these patients. Usually, there is a high grade of uncertainty and the basis for clinical decisions regarding ICP hypertension tends to be from clinical findings (headache, nausea and vomiting), a low Glasgow coma scale score, and/or fundoscopic papilledema...
August 7, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28781914/will-clinical-parameters-reliably-predict-external-ventricular-drain-associated-ventriculitis-is-frequent-routine-cerebrospinal-fluid-surveillance-necessary
#7
Omid Hariri, Saman Farr, Shokry Lawandy, Bailey Zampella, Dan Miulli, Javed Siddiqi
BACKGROUND: The placement of an external ventricular drain (EVD) for monitoring and treatment of increased intracranial pressure is not without risk, particularly for the development of associated ventriculitis. The goal of this study was to investigate whether changes in cerebrospinal fluid (CSF), serum, or clinical parameters are correlated with the development of ventriculitis before it occurs, allowing for the determination of optimal timing of CSF collection. METHODS: An observational retrospective study was conducted between January 2006 and May 2012...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28774294/temperature-variability-in-the-day-night-cycle-is-associated-with-further-intracranial-pressure-during-therapeutic-hypothermia
#8
Adriano Barreto Nogueira, Eva Annen, Oliver Boss, Faraneh Farokhzad, Christopher Sikorski, Emanuela Keller
BACKGROUND: To assess whether circadian patterns of temperature correlate with further values of intracranial pressure (ICP) in severe brain injury treated with hypothermia. METHODS: We retrospectively analyzed temperature values in subarachnoid hemorrhage patients treated with hypothermia by endovascular cooling. The circadian patterns of temperature were correlated with the mean ICP across the following day (ICP24). RESULTS: We analyzed data from 17 days of monitoring of three subarachnoid hemorrhage patients that underwent aneurysm coiling, sedation and hypothermia due to refractory intracranial hypertension and/or cerebral vasospasm...
August 3, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28769857/hyperventilation-therapy-for-control-of-posttraumatic-intracranial-hypertension
#9
REVIEW
Daniel Agustín Godoy, Ali Seifi, David Garza, Santiago Lubillo-Montenegro, Francisco Murillo-Cabezas
During traumatic brain injury, intracranial hypertension (ICH) can become a life-threatening condition if it is not managed quickly and adequately. Physicians use therapeutic hyperventilation to reduce elevated intracranial pressure (ICP) by manipulating autoregulatory functions connected to cerebrovascular CO2 reactivity. Inducing hypocapnia via hyperventilation reduces the partial pressure of arterial carbon dioxide (PaCO2), which incites vasoconstriction in the cerebral resistance arterioles. This constriction decrease cerebral blood flow, which reduces cerebral blood volume and, ultimately, decreases the patient's ICP...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28763434/comparison-of-3-hypertonic-saline-and-20-mannitol-for-reducing-intracranial-pressure-in-patients-undergoing-supratentorial-brain-tumor-surgery-a-randomized-double-blind-clinical-trial
#10
Achmet Ali, Aylin Tetik, Pulat A Sabanci, Demet Altun, Nukhet Sivrikoz, Taner Abdullah, Aydin Aydoseli, Altay Sencer, Ibrahim O Akinci
BACKGROUND: In the present study, we hypothesized that 3% hypertonic saline (HS) is more effective than 20% mannitol to reduce intracranial pressure (ICP) and to modify brain bulk in patients undergoing an elective supratentorial craniotomy. MATERIALS AND METHODS: After institutional review board approval, patients scheduled to undergo supratentorial craniotomy were enrolled into this prospective, randomized, double-blind study. The patients were monitored for routine hemodynamic parameters, depth of anesthesia, and ICP...
July 31, 2017: Journal of Neurosurgical Anesthesiology
https://www.readbyqxmd.com/read/28762185/consideration-of-the-intracranial-pressure-threshold-value-for-the-initiation-of-traumatic-brain-injury-treatment-a-xenon-ct-and-perfusion-ct-study
#11
Mitsuru Honda, Ryo Ichibayashi, Ginga Suzuki, Hiroki Yokomuro, Yoshikatsu Seiki, Shigeru Sase, Taichi Kishi
BACKGROUND: Monitoring of intracranial pressure (ICP) is considered to be fundamental for the care of patients with severe traumatic brain injury (TBI) and is routinely used to direct medical and surgical therapy. Accordingly, some guidelines for the management of severe TBI recommend that treatment be initiated for ICP values >20 mmHg. However, it remained to be accounted whether there is a scientific basis to this instruction. The purpose of the present study was to clarify whether the basis of ICP values >20 mmHg is appropriate...
July 31, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28756599/long-term-monitoring-of-intracranial-pressure-in-normal-pressure-hydrocephalus-and-other-csf-disorders
#12
EDITORIAL
Zofia Czosnyka, Marek Czosnyka
Long-term monitoring of intracranial pressure is a useful method in the diagnosis of complex hydrocephalus and CSF disorders. This editorial discusses various criteria for the interpretation of ICP monitoring in normal pressure hydrocephalus, idiopathic intracranial hypertension and in patients with implanted hydrocephalus shunts.
July 29, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28747037/increased-arterial-stiffness-is-an-independent-risk-factor-for-hemorrhagic-transformation-in-ischemic-stroke-undergoing-thrombolysis
#13
Maurizio Acampa, Silvia Camarri, Pietro Enea Lazzerini, Francesca Guideri, Rossana Tassi, Raffaella Valenti, Alessandra Cartocci, Giuseppe Martini
BACKGROUND: Hemorrhagic transformation (HT) is a multifactorial phenomenon and represents a possible complication of ischemic stroke, especially after thrombolytic treatment. Increased arterial stiffness has been associated with intracranial hemorrhage, but there is no evidence of association with HT after thrombolytic therapy. The aim of our study is to investigate a possible link between arterial stiffness and HT occurrence after thrombolytic therapy in patients with ischemic stroke...
September 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28743344/-experimental-animal-study-of-cerebral-oxygen-metabolism-changes-during-the-process-of-brain-death
#14
Huaying Qi, Chenguang Wan, Xuequan Feng, Mu Li, Li Chen, Yongqiang Wang, Yuan Shi, Lei Liu, Zhongyang Shen
OBJECTIVE: To reproduce a stable animal model of brain death in pigs, observe the change regularity of cerebral oxygen metabolism during the process of brain death, and to evaluate the significance and value of cerebral oxygen metabolism parameters for the diagnosis of brain death. METHODS: Twelve landrace pigs were used to create the brain death models using modified method of increasing epidural intracranial pressure (ICP). The mean arterial pressure (MAP) and ICP were monitored continuously during the process...
July 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28742869/ultrasound-non-invasive-measurement-of-intracranial-pressure-in-neurointensive-care-a-prospective-observational-study
#15
Chiara Robba, Danilo Cardim, Tamara Tajsic, Justine Pietersen, Michael Bulman, Joseph Donnelly, Andrea Lavinio, Arun Gupta, David K Menon, Peter J A Hutchinson, Marek Czosnyka
BACKGROUND: The invasive nature of the current methods for monitoring of intracranial pressure (ICP) has prevented their use in many clinical situations. Several attempts have been made to develop methods to monitor ICP non-invasively. The aim of this study is to assess the relationship between ultrasound-based non-invasive ICP (nICP) and invasive ICP measurement in neurocritical care patients. METHODS AND FINDINGS: This was a prospective, single-cohort observational study of patients admitted to a tertiary neurocritical care unit...
July 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28742817/temporal-profile-of-intracranial-pressure-and-cerebrovascular-reactivity-in-severe-traumatic-brain-injury-and-association-with-fatal-outcome-an-observational-study
#16
Hadie Adams, Joseph Donnelly, Marek Czosnyka, Angelos G Kolias, Adel Helmy, David K Menon, Peter Smielewski, Peter J Hutchinson
BACKGROUND: Both intracranial pressure (ICP) and the cerebrovascular pressure reactivity represent the dysregulation of pathways directly involved in traumatic brain injury (TBI) pathogenesis and have been used to inform clinical management. However, how these parameters evolve over time following injury and whether this evolution has any prognostic importance have not been studied. METHODS AND FINDINGS: We analysed the temporal profile of ICP and pressure reactivity index (PRx), examined their relation to TBI-specific mortality, and determined if the prognostic relevance of these parameters was affected by their temporal profile using mixed models for repeated measures of ICP and PRx for the first 240 hours from the time of injury...
July 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28742798/cerebrovascular-pressure-reactivity-monitoring-using-wavelet-analysis-in-traumatic-brain-injury-patients-a-retrospective-study
#17
Xiuyun Liu, Joseph Donnelly, Marek Czosnyka, Marcel J H Aries, Ken Brady, Danilo Cardim, Chiara Robba, Manuel Cabeleira, Dong-Joo Kim, Christina Haubrich, Peter J Hutchinson, Peter Smielewski
BACKGROUND: After traumatic brain injury (TBI), the ability of cerebral vessels to appropriately react to changes in arterial blood pressure (pressure reactivity) is impaired, leaving patients vulnerable to cerebral hypo- or hyperperfusion. Although, the traditional pressure reactivity index (PRx) has demonstrated that impaired pressure reactivity is associated with poor patient outcome, PRx is sometimes erratic and may not be reliable in various clinical circumstances. Here, we introduce a more robust transform-based wavelet pressure reactivity index (wPRx) and compare its performance with the widely used traditional PRx across 3 areas: its stability and reliability in time, its ability to give an optimal cerebral perfusion pressure (CPPopt) recommendation, and its relationship with patient outcome...
July 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28733841/analgosedation-of-adult-patients-with-elevated-intracranial-pressure-survey-of-current-clinical-practice-in-austria
#18
Guenther Herzer, Claudia Mirth, Udo M Illievich, Wolfgang G Voelckel, Helmut Trimmel
BACKGROUND: Analgesia and sedation are key items in intensive care. Recently published S3 guidelines specifically address treatment of patients with elevated intracranial pressure. METHODS: The Austrian Society of Anesthesiology, Resuscitation and Intensive Care Medicine carried out an online survey of neurointensive care units in Austria in order to evaluate the current state of practice in the areas of analgosedation and delirium management in this high-risk patient group...
July 21, 2017: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/28726590/a-method-of-managing-severe-traumatic-brain-injury-in-the-absence-of-intracranial-pressure-monitoring-the-ice-protocol
#19
Randall Chesnut, Nancy Temkin, Sureyya Dikmen, Carlos Rondina, Walter Videtta, Gustavo Petroni, Silvia Lujan, Victor Alanis, Antonio Luis Eiras Falcao, Gustavo La Fuente, Luis Gonzalez, Manuel Jibaja, Arturo Lavendez, Freddy Sandi Lora, Roberto Merida, Ricardo Romero, James Pridgeon, Jason Barber, Joan Machamer, Kelley Chaddock
Purpose - The imaging- and clinical-examination (ICE) algorithm used in the BEST TRIP ICP randomized controlled trial is the only prospectively investigated clinical protocol for TBI management without ICP monitoring. As the default literature standard, it warrants careful evaluation. Methods - We present the ICE protocol in detail and analyse the demographics, outcome, treatment intensity, frequency of intervention usage, and related adverse events in the ICE-protocol cohort. Results - The 167 ICE protocol patients were young (median 29 years) with a median Glasgow Coma Scale motor score of 4 but with anisocoria or abnormal pupillary reactivity in 40%...
July 20, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28712906/a-comparison-of-pharmacologic-therapeutic-agents-used-for-the-reduction-of-intracranial-pressure-following-traumatic-brain-injury
#20
REVIEW
Ahmed M Alnemari, Brianna M Krafcik, Tarek R Mansour, Daniel Gaudin
OBJECTIVE: In neurotrauma care, a better understanding of treatments following traumatic brain injury (TBI) has led to a significant decrease in morbidity and mortality in this population. TBI represents a significant medical problem, and complications following TBI are associated with the initial injury and post-event intracranial processes such as elevated intracranial pressure (ICP) and brain edema. Consequently, appropriate therapeutic interventions are required to reduce brain tissue damage and improve cerebral perfusion...
July 13, 2017: World Neurosurgery
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