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Increased intracranial pressure

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https://www.readbyqxmd.com/read/28346317/the-csf-immune-response-in-hiv-1-associated-cryptococcal-meningitis-macrophage-activation-correlates-of-disease-severity-and-effect-of-antiretroviral-therapy
#1
James E Scriven, Lisa M Graham, Charlotte Schutz, Thomas J Scriba, Katalin A Wilkinson, Robert J Wilkinson, David R Boulware, Britta C Urban, Graeme Meintjes, David G Lalloo
BACKGROUND: Immune modulation may improve outcome in HIV-associated cryptococcal meningitis. Animal studies suggest alternatively activated macrophages are detrimental but human studies are limited. We performed a detailed assessment of the cerebrospinal fluid (CSF) immune response and examined immune correlates of disease severity and poor outcome, and the effects of antiretroviral therapy (ART). METHODOLOGY: We enrolled persons ≥18 years with first episode of HIV-associated cryptococcal meningitis...
March 24, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28346232/the-future-is-now-neuroprotection-during-cardiopulmonary-resuscitation
#2
Johanna C Moore, Jason A Bartos, Timothy R Matsuura, Demetris Yannopoulos
PURPOSE OF REVIEW: Survival with favorable neurological function after cardiac arrest remains low. The purpose of this review is to identify recent advances that focus on neuroprotection during cardiopulmonary resuscitation (CPR). RECENT FINDINGS: Multiple strategies have been shown to enhance neuroprotection during CPR. Brain perfusion during CPR is increased with therapies such as active compression decompression CPR and intrathoracic pressure regulation that improve cardiac preload and decrease intracranial pressure...
March 24, 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28344346/choroid-plexus-aquaporin-1-and-intracranial-pressure-are-increased-in-obese-rats-towards-an-idiopathic-intracranial-hypertension-model
#3
M Uldall, D K Bhatt, C Kruuse, M Juhler, I Jansen-Olesen, R Jensen
BACKGROUND/OBJECTIVES: Idiopathic intracranial hypertension (IIH) is a condition of increased intracranial pressure (ICP) without identifiable cause. The majority of IIH patients are obese, which suggests a connection between ICP and obesity. The aim of the study was to compare ICP in lean and obese rats. We also aimed to clarify if any ICP difference could be attributed to changes in some well-known ICP modulators; retinol and arterial partial pressure of CO2 (pCO2). Another potential explanation could be differences in water transport across the choroid plexus (CP) epithelia, and thus we furthermore investigated expression profiles of aquaporin 1 and Na/K ATPase...
March 27, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28343842/cranial-nerve-palsy-following-central-neuraxial-block-in-obstetrics-a-review-of-the-literature-and-analysis-of-43-case-reports
#4
D J Chambers, K Bhatia
BACKGROUND: Cranial nerve palsy is a rarely reported complication of central neuraxial block in obstetrics. The aetiology is diverse and includes both decreased and increased intracranial pressure. METHODS: Medline, CINAHL, and EMBASE databases were searched to identify cases of cranial nerve palsy following obstetric central neuraxial block. Possible aetiology, clinical symptoms and signs, treatment, and time to resolution were assessed. RESULTS: Forty-one articles containing 43 case reports of cranial nerve palsy following obstetric central neuraxial block were identified...
February 20, 2017: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/28335668/directions-for-use-of-intracranial-pressure-monitoring-in-treatment-of-severe-traumatic-brain-injury-using-data-from-the-japan-neurotrauma-data-bank
#5
Eiichi Suehiro, Yuichi Fujiyama, Hiroyasu Koizumi, Michiyasu Suzuki
Neuromonitoring can be used to observe intracranial pathological conditions in neurointensive care, but use of intracranial pressure (ICP) monitoring is low in Japan. In this study, we retrospectively investigated the effects of ICP monitoring in treatment of severe traumatic brain injury (TBI) using data from the Japan Neurotrauma Data Bank (JNTDB). The study was conducted in 1,091 subjects enrolled in the JNTDB (Project 2009) from July 2009 to June 2011. The subjects were divided into those treated with and without ICP monitoring in intensive care for severe TBI...
March 23, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28334917/late-onset-cystic-brain-necrosis-after-radiotherapy-for-nasopharyngeal-carcinoma
#6
Wenli Fang, Beibei Gu, Xiuna Jing, Songhua Xiao, Shengnuo Fan, Wang Liao, Yuqiu Zheng, Jun Liu
Background: Cystic brain radionecrosis (CBRN) is a late-onset devastating complication after radiotherapy for head and neck neoplasms, especially for nasopharyngeal carcinoma (NPC). To our knowledge, it has scarcely been reported. Methods: We retrospectively reviewed all available medical records of NPC patients with CBRN who were treated with surgical intervention. Results: Sixteen patients were identified in this study and the mean latency of CBRN was 9...
February 24, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28332154/altered-cerebrospinal-fluid-dynamics-in-neurofibromatosis-type-l-severe-arachnoid-thickening-in-patients-with-neurofibromatosis-type-1-may-cause-abnormal-csf-dynamic
#7
Young Sill Kang, Eun-Kyung Park, Yong-Oock Kim, Ju-Seong Kim, Dong-Seok Kim, U W Thomale, Kyu-Won Shim
INTRODUCTION: The object of this study is to understand abnormal dynamic of cerebrospinal fluid (CSF) in patients with neurofibromatosis type 1 (NF1), which may cause temporal lobe herniation and bulging of temporal fossa. METHODS: Four patients, three females and one male, with NF1 were studied retrospectively. They presented with a similar craniofacial deformity, which consisted of pulsatile exophthalmos, an enlarged bony orbit, dysplasia of the sphenoid wing with the presence of a herniation of the temporal lobe into the orbit, and a bulging temporal fossa...
March 22, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28330412/early-asymmetric-cardio-cerebral-causality-and-outcome-after-severe-traumatic-brain-injury
#8
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/28329435/face-shield-design-against-blast-induced-head-injuries
#9
Long Bin Tan, Kwong Ming Tse, Yuan Hong Tan, Mohamad Ali Bin Sapingi, Vincent Beng Chye Tan, Heow Pueh Lee
Blast-induced traumatic brain injury (TBI) has been on the rise in recent years due to the increasing use of improvised explosive devices (IEDs) in conflict zones. Our study investigates the response of a helmeted human head subjected to a blast of 1 atm peak overpressure, for cases with and without a standard polycarbonate (PC) face shield and for face shields comprising of composite PC and aerogel materials and with lateral edge extension. The novel introduction of aerogel into the laminate face shield is explored and its wave-structure interaction mechanics and performance in blast mitigation is analysed...
March 22, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/28323775/inadequate-antioxidative-responses-in-kidneys-of-brain-dead-rats
#10
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/28320134/post-hemorrhagic-hydrocephalus-recent-advances-and-new-therapeutic-insights
#11
REVIEW
Qianwei Chen, Zhou Feng, Qiang Tan, Jing Guo, Jun Tang, Liang Tan, Hua Feng, Zhi Chen
Post-hemorrhagic hydrocephalus (PHH), also referred to as progressive ventricular dilatation, is caused by disturbances in cerebrospinal fluid (CSF) flow or absorption following hemorrhage in the brain. As one of the most serious complications of neonatal/adult intraventricular hemorrhage (IVH), subarachnoid hemorrhage (SAH), and traumatic brain injury (TBI), PHH is associated with increased morbidity and disability of these events. Common sequelae of PHH include neurocognitive impairment, motor dysfunction, and growth impairment...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28298771/attenuation-of-hemodynamic-response-to-skull-pin-head-holder-insertion-intravenous-clonidine-versus-intravenous-lignocaine-infusion
#12
Nethra H Nanjundaswamy, Vinay Marulasiddappa
BACKGROUND: Insertion of skull pin induces a significant increase in heart rate (HR), blood pressure (BP) and intracranial pressure. Alpha 2 agonist clonidine and intravenous (i.v.) lignocaine are effective in attenuating stress response. Local infiltration of pin site and scalp block with lignocaine are commonly used techniques for prevention of hemodynamic response to skull pin insertion. We compared the effectiveness of i.v. clonidine infusion and i.v. lignocaine infusion in suppressing the hemodynamic response to skull pin head holder insertion...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28297690/-multiple-tentorial-dural-arteriovenous-fistulas-with-acquired-pial-arteriovenous-fistula-presented-with-unilateral-eye-symptoms-successfully-treated-by-transarterial-embolization-and-direct-surgery-a-case-report
#13
Hisato Minamide, Yutaka Hayashi, Naoyuki Uchiyama
A 58-year-old man presented with slowly progressive chemosis, exophthalmos, and blepharedema of the left eye. Digital subtraction angiography revealed multiple dural arteriovenous fistulas(dAVFs)involving the bilateral tentorium, superior sagittal sinus, and right frontal convexity. In addition, occlusion of the left cavernous sinus and left sigmoid sinus were observed, which could lead to venous hypertension and might be associated with the occurrence of multiple dAVFs. Along with the congestion of the left ophthalmic vein, increased intracranial pressure due to the left tentorial dAVF with cortical venous reflux could have caused the left eye symptoms; therefore, the tentorial lesion was treated first...
March 2017: No Shinkei Geka. Neurological Surgery
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
#14
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/28284189/changes-in-intraocular-pressure-and-optic-nerve-sheath-diameter-in-patients-undergoing-robotic-assisted-laparoscopic-prostatectomy-in-steep-45%C3%A2-trendelenburg-position
#15
Sebastian Blecha, Marion Harth, Felix Schlachetzki, Florian Zeman, Christiane Blecha, Pierre Flora, Maximilian Burger, Stefan Denzinger, Bernhard M Graf, Horst Helbig, Michael T Pawlik
BACKGROUND: To evaluate changes in intraocular pressure (IOP) and intracerebral pressure (ICP) reflected by the optic nerve sheath diameter (ONSD) in patients undergoing robotic-assisted laparoscopic prostatectomy (RALP) in permanent 45° steep Trendelenburg position (STP). METHODS: Fifty-one patients undergoing RALP under a standardised anaesthesia. IOP was perioperatively measured in awake patients (T0) and IOP and ONSD 20 min after induction of anaesthesia (T1), after insufflation of the abdomen in supine position (T2), after 30 min in STP (T3), when controlling Santorini's plexus in STP (T4) and before awakening while supine (T5)...
March 11, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28283997/decision-support-system-for-detection-of-papilledema-through-fundus-retinal-images
#16
Shahzad Akbar, Muhammad Usman Akram, Muhammad Sharif, Anam Tariq, Ubaid Ullah Yasin
A condition in which the optic nerve inside the eye is swelled due to increased intracranial pressure is known as papilledema. The abnormalities due to papilledema such as opacification of Retinal Nerve Fiber Layer (RNFL), dilated optic disc capillaries, blurred disc margins, absence of venous pulsations, elevation of optic disc, obscuration of optic disc vessels, dilation of optic disc veins, optic disc splinter hemorrhages, cotton wool spots and hard exudates may result in complete vision loss. The ophthalmologists detect papilledema by means of an ophthalmoscope, Computed Tomography (CT), Magnetic Resonance Imaging (MRI) and ultrasound...
April 2017: Journal of Medical Systems
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
#17
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
#18
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/28277554/morphological-changes-of-anterior-cerebral-artery-aca-in-hydrocephalic-pediatric-patients
#19
Sait Ozturk, Erdogan Ayan, Metin Kaplan
OBJECTIVE: The morphology of anterior cerebral artery (ACA) in patients with hydrocephalus (HCP) was analyzed, and its importance was discussed in maintaining cerebral perfusion. MATERIALS & METHODS: A total of 84 cases in 2 groups between 0 and 3 months, followed-up at Firat Universitesi Hastanesi, Beyin Cerrahisi Klinigi, Elazig, Turkiye due to in 2010-2013, were enrolled. Two groups were created for the study. Group 1; patients with HCP and Group 2; as control group without HCP...
2017: Iranian Journal of Child Neurology
https://www.readbyqxmd.com/read/28277450/intracranial-pressure-values-are-highly-variable-after-cerebral-spinal-fluid-drainage
#20
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
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