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Intracranial pressure monitors

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https://www.readbyqxmd.com/read/28330412/early-asymmetric-cardio-cerebral-causality-and-outcome-after-severe-traumatic-brain-injury
#1
Lei Gao, Peter Smieleweski, Marek Czosnyka, Ari Ercole
The brain and heart are two vital systems in health and disease, increasingly recognised as a complex, interdependent network with constant information flow in both directions. After severe traumatic brain injury (TBI), the causal, directed interactions between the brain, heart and autonomic nervous system have not been well established. Novel methods are needed to probe unmeasured, potentially prognostic information in complex biological networks that are not revealed via traditional means. In this study, we examined potential bi-directional causality between intracranial pressure (ICP), mean arterial pressure (MAP) and heart rate (HR) and its relationship to mortality in a 24-hour period early after TBI...
March 23, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28323775/inadequate-antioxidative-responses-in-kidneys-of-brain-dead-rats
#2
Dane Hoeksma, Rolando A Rebolledo, Maximilia Hottenrott, Yves S Bodar, Janneke J Wiersema-Buist, Harry Van Goor, Henri G D Leuvenink
BACKGROUND: Brain death (BD)-related lipid peroxidation, measured as serum malondialdehyde (MDA) levels, correlates with delayed graft function in renal transplant recipients. How BD affects lipid peroxidation is not known. The extent of BD-induced organ damage is influenced by the speed at which intracranial pressure increases. To determine possible underlying causes of lipid peroxidation, we investigated the renal redox balance by assessing oxidative and antioxidative processes in kidneys of brain-dead rats after fast and slow BD induction...
April 2017: Transplantation
https://www.readbyqxmd.com/read/28300719/idiopathic-intracranial-hypertension-in-monozygotic-female-twins-intracranial-pressure-dynamics-and-treatment-outcome
#3
Manolis Polemikos, Hans E Heissler, Elvis J Hermann, Joachim K Krauss
BACKGROUND: Familial cases of idiopathic intracranial hypertension (IIH) are exceedingly rare and its occurrence has not been reported before in monozygotic twins. CASE DESCRIPTION: We describe the cases of monozygotic female twins who developed IIH at age 25 and at age 28, respectively. Continuous intracranial pressure monitoring confirmed elevated intracranial pressure (ICP) as measured initially by lumbar puncture. In both cases, successful treatment with resolution of papilledema and symptoms relief was achieved after ventriculoperitoneal shunting...
March 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28291455/measuring-hemodynamic-changes-in-the-ophthalmic-artery-during-applied-force-for-noninvasive-intracranial-pressure-monitoring-test-results-in-a-porcine-model
#4
Max Twedt, Chase Pfeifer, William Thorell, Greg Bashford
Possible traumatic brain injury victims would greatly benefit from a handheld, noninvasive intracranial pressure (ICP) monitoring tool, which a medic could operate in a remote area. Such a device would also benefit the transport of injured soldiers during en route medical care and critical care air transport. This study demonstrates the use of noninvasive blood flow measurements in the eye by ultrasound as a proxy for ICP. ICP was artificially raised in a porcine model and resultant blood flow change in the ophthalmic artery was measured...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28282851/twenty-four-hour-real-time-continuous-monitoring-of-cerebral-edema-in-rabbits-based-on-a-noninvasive-and-noncontact-system-of-magnetic-induction
#5
Gen Li, Ke Ma, Jian Sun, Gui Jin, Mingxin Qin, Hua Feng
Cerebral edema is a common disease, secondary to craniocerebral injury, and real-time continuous monitoring of cerebral edema is crucial for treating patients after traumatic brain injury. This work established a noninvasive and noncontact system by monitoring the magnetic induction phase shift (MIPS) which is associated with brain tissue conductivity. Sixteen rabbits (experimental group n = 10, control group, n = 6) were used to perform a 24 h MIPS and intracranial pressure (ICP) simultaneously monitored experimental study...
March 8, 2017: Sensors
https://www.readbyqxmd.com/read/28281221/evidence-for-decreased-brain-parenchymal-volume-after-large-intracerebral-hemorrhages-a-potential-mechanism-limiting-intracranial-pressure-rises
#6
Michael R Williamson, Frederick Colbourne
Potentially fatal intracranial pressure (ICP) rises commonly occur after large intracerebral hemorrhages (ICH). We monitored ICP after infusing 100-160 μL of autologous blood (vs. 0 μL control) into the striatum of rats in order to test the validity of this common model with regard to ICP elevations. Other endpoints included body temperature, behavioral impairment, lesion volume, and edema. Also, we evaluated hippocampal CA1 sector and somatosensory cortical neuron morphology to assess whether global ischemic injury occurred...
March 9, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28277450/intracranial-pressure-values-are-highly-variable-after-cerebral-spinal-fluid-drainage
#7
Michael Rogers, Sonja E Stutzman, Folefac D Atem, Samarpita Sengupta, Babu Welch, DaiWai M Olson
Intracranial pressure (ICP) is often obtained via external ventricular drain (EVD) placement and is discussed as a key vital sign in neuroscience. Nurses are most often delegated the task of observing, adjudicating, and documenting ICP. Cerebrospinal fluid drainage requires that the transducer connected to the EVD is open to drain, prohibiting ICP monitoring. There are no recent data to support an evidence-based standard for the period an ICP waveform should be observed, after the EVD is clamped, to be able to adjudicate a value that represents the patient's status...
April 2017: Journal of Neuroscience Nursing: Journal of the American Association of Neuroscience Nurses
https://www.readbyqxmd.com/read/28275224/aggressive-versus-conservative-antibiotic-use-to-prevent-and-treat-ventilator-associated-pneumonia-in-patients-with-severe-traumatic-brain-injury-comparison-of-two-case-series
#8
Arturo Chieregato, Paolo Malacarne, Francesco Cocciolo, Maurizio Ravaldini, Emanuele Russo, Bruno Viaggi, Michele Giardino, Carlotta Rossi, Bruno Simini, Guido Bertolini
BACKGROUND: In patients with traumatic brain injury (TBI), ventilator-associated pneumonia (VAP) is considered a dangerous complication, prompting early aggressive antibiotic treatment and prophylaxis. While this approach increases the selection of multidrug-resistant bacteria (MDR), its clinical benefit has not been demonstrated. METHODS: One-year incidence of VAP in severe TBI patients (ICU stay >48 hours, with either Glasgow Coma Scale 8 or receiving intracranial pressure monitoring, or having undergone emergency surgery) and the prevalence of MDR among those who eventually developed it, were compared in two Italian intensive care units (ICUs) adopting different antibiotic approaches...
March 8, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28269274/design-and-evaluation-of-a-low-cost-intracranial-pressure-monitoring-system
#9
Ranjani Sampath Kumaran, Bradly Greger, Jennifer Blain Christen
One of the most life-threatening neural conditions is elevated intracranial pressure (ICP); it is associated with ischemia and poor short- and long-term outcomes. Currently, monitoring systems that accurately measure ICP are either highly invasive or inaccurate. This work explores the design and evaluation of an epidural intracranial pressure monitoring system for low-cost, minimally invasive detection. Our goal is to develop a monitoring system that could also be integrated with an electrocorticography (ECoG) system...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268710/inductive-passive-sensor-for-intraparenchymal-and-intraventricular-monitoring-of-intracranial-pressure
#10
Mohammad H Behfar, Emily Abada, Lauri Sydanheimo, Ken Goldman, Aaron J Fleischman, Nalin Gupta, Leena Ukkonen, Shuvo Roy
Accurate measurement of intracranial hypertension is crucial for the management of elevated intracranial pressure (ICP). Catheter-based intraventricular ICP measurement is regarded as the gold standard for accurate ICP monitoring. However, this method is invasive, time-limited, and associated with complications. In this paper, we propose an implantable passive sensor that could be used for continuous intraparenchymal and intraventricular ICP monitoring. Moreover, the sensor can be placed simultaneously along with a cerebrospinal fluid shunt system in order to monitor its function...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28261039/first-description-of-reduced-pyruvate-dehydrogenase-enzyme-activity-following-subarachnoid-hemorrhage-sah
#11
Nadine Lilla, Hannah Füllgraf, Christian Stetter, Stefan Köhler, Ralf-Ingo Ernestus, Thomas Westermaier
Object: Several previous studies reported metabolic derangements and an accumulation of metabolic products in the early phase of experimental subarachnoid hemorrhage (SAH), which may contribute to secondary brain damage. This may be a result of deranged oxygen utilization due to enzymatic dysfunction in aerobic glucose metabolism. This study was performed to investigate, if pyruvate dehydrogenase enzyme (PDH) is affected in its activity giving further hints for a derangement of oxidative metabolism. Methods: Eighteen male Sprague-Dawley rats were randomly assigned to one of two experimental groups (n = 9): (1) SAH induced by the endovascular filament model and (2) sham-operated controls...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28255331/detection-of-impaired-cerebral-autoregulation-using-selected-correlation-analysis-a-validation-study
#12
Martin A Proescholdt, Rupert Faltermeier, Sylvia Bele, Alexander Brawanski
Multimodal brain monitoring has been utilized to optimize treatment of patients with critical neurological diseases. However, the amount of data requires an integrative tool set to unmask pathological events in a timely fashion. Recently we have introduced a mathematical model allowing the simulation of pathophysiological conditions such as reduced intracranial compliance and impaired autoregulation. Utilizing a mathematical tool set called selected correlation analysis (sca), correlation patterns, which indicate impaired autoregulation, can be detected in patient data sets (scp)...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/28252524/development-and-prospective-validation-of-tools-to-accurately-identify-neurosurgical-and-critical-care-events-in-children-with-traumatic-brain-injury
#13
Tellen D Bennett, Peter E DeWitt, Rebecca R Dixon, Cory Kartchner, Yamila Sierra, Diane Ladell, Rajendu Srivastava, Jay Riva-Cambrin, Allison Kempe, Desmond K Runyan, Heather T Keenan, J Michael Dean
OBJECTIVE: To develop and validate case definitions (computable phenotypes) to accurately identify neurosurgical and critical care events in children with traumatic brain injury. DESIGN: Prospective observational cohort study, May 2013 to September 2015. SETTING: Two large U.S. children's hospitals with level 1 Pediatric Trauma Centers. PATIENTS: One hundred seventy-four children less than 18 years old admitted to an ICU after traumatic brain injury...
March 1, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28249866/a-novel-approach-to-explore-how-nursing-care-affects-intracranial-pressure
#14
DaiWai M Olson, Camille Parcon, Aljean Santos, Guilla Santos, Ryan Delabar, Sonja E Stutzman
BACKGROUND: Intracranial pressure is measured continuously, and nursing behaviors have been associated with variations in the measurements. METHODS: A prospective pilot observational study was done to develop a comprehensive list of nursing behaviors that affect patients' intracranial pressure. Data on nurses were obtained by self-reports and video recording. Patient-level data were collected via chart abstraction, video recording, and patients' monitors. RESULTS: Data on 9 patients and 32 nurses were analyzed...
March 2017: American Journal of Critical Care: An Official Publication, American Association of Critical-Care Nurses
https://www.readbyqxmd.com/read/28243999/physiological-effects-of-early-incremental-mobilization-of-a-patient-with-acute-intracerebral-and-intraventricular-hemorrhage-requiring-dual-external-ventricular-drainage
#15
Sowmya Kumble, Elizabeth K Zink, Mackenzie Burch, Sandra Deluzio, Robert D Stevens, Mona N Bahouth
BACKGROUND: Recent trials have challenged the notion that very early mobility benefits patients with acute stroke. It is unclear how cerebral autoregulatory impairments, prevalent in this population, could be affected by mobilization. The safety of mobilizing patients who have external ventricular drainage (EVD) devices for cerebrospinal fluid diversion and intracranial pressure (ICP) monitoring is another concern due to risk of device dislodgment and potential elevation in ICP. We report hemodynamic and ICP responses during progressive, device-assisted mobility interventions performed in a critically ill patient with intracerebral hemorrhage (ICH) requiring two EVDs...
February 27, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28243808/intracranial-pressure-monitoring-after-primary-decompressive-craniectomy-is-it-useful
#16
EDITORIAL
Andreas K Demetriades
No abstract text is available yet for this article.
February 27, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28242158/-organisation-of-care-and-initial-management-of-severe-head-injury-in-spain-results-of-a-national-survey
#17
Vicente Joanes
OBJECTIVE: The main objective of the study is to obtain knowledge about the organisation of care for severe head trauma as well as the initial management of these patients in Neurosurgical Departments in Spain. MATERIAL AND METHOD: A 22-item questionnaire was designed and sent to 59 Neurosurgical Departments. The aim of the questionnaire was to collect data regarding the general profile of the patients with a severe head injury, the general characteristics of the hospitals, the initial care of these patients, the monitoring techniques used, and the measures used to control Intracranial pressure (ICP)...
February 24, 2017: Neurocirugía
https://www.readbyqxmd.com/read/28241847/the-accuracy-of-transcranial-doppler-in-excluding-intracranial-hypertension-following-acute-brain-injury-a-multicenter-prospective-pilot-study
#18
Frank A Rasulo, Rita Bertuetti, Chiara Robba, Francesco Lusenti, Alfredo Cantoni, Marta Bernini, Alan Girardini, Stefano Calza, Simone Piva, Nazzareno Fagoni, Nicola Latronico
BACKGROUND: Untimely diagnosis of intracranial hypertension may lead to delays in therapy and worsening of outcome. Transcranial Doppler (TCD) detects variations in cerebral blood flow velocity which may correlate with intracranial pressure (ICP). We investigated if intracranial hypertension can be accurately excluded through use of TCD. METHOD: This was a multicenter prospective pilot study in patients with acute brain injury requiring invasive ICP (ICPi) monitoring...
February 27, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28236869/intraventricular-hemorrhage-after-dural-fistula-embolization
#19
Joana Chaves Gonçalves Rodrigues de Carvalho, Francisco Javier Tercero Machin, Luis San Roman Manzanera, Jordi Blasco Andaluz, Sílvia Herrero Nogués, Núria Peix Soriano, Victor Obach Baurier, Enrique Jesus Carrero Cardenal
BACKGROUND AND OBJECTIVES: Dural arteriovenous fistulas are anomalous shunts between dural arterial and venous channels whose nidus is located between the dural leaflets. For those circumstances when invasive treatment is mandatory, endovascular techniques have grown to become the mainstay of practice, choice attributable to their reported safety and effectiveness. We describe the unique and rare case of a dural arteriovenous fistula treated by transarterial embolization and complicated by an intraventricular hemorrhage...
March 2017: Brazilian Journal of Anesthesiology
https://www.readbyqxmd.com/read/28236181/intracranial-pressure-monitoring-after-primary-decompressive-craniectomy-in-traumatic-brain-injury-a-clinical-study
#20
Edoardo Picetti, Maria Luisa Caspani, Corrado Iaccarino, Giulia Pastorello, Pierpaolo Salsi, Edoardo Viaroli, Franco Servadei
BACKGROUND: Intracranial pressure (ICP) monitoring represents an important tool in the management of traumatic brain injury (TBI). Although current information exists regarding ICP monitoring in secondary decompressive craniectomy (DC), little is known after primary DC following emergency hematoma evacuation. METHODS: Retrospective analysis of prospectively collected data. Inclusion criteria were age ≥18 years and admission to the intensive care unit (ICU) for TBI and ICP monitoring after primary DC...
February 24, 2017: Acta Neurochirurgica
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