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Intracranial pressure

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https://www.readbyqxmd.com/read/28238447/temporising-extradural-haematoma-by-craniostomy-using-an-intraosseous-needle
#1
Harry Bulstrode, Silvester Kabwama, Andrew Durnford, Jonathan Hempenstall, Aabir Chakraborty
We report a novel application of intraosseous needle drainage, alleviating raised intracranial pressure due to extradural haematoma. The potential application of this technique in preventing secondary brain injury and herniation during transfer to a neurosurgical unit is discussed.
February 20, 2017: Injury
https://www.readbyqxmd.com/read/28237144/retrospective-analysis-of-translaminar-demographic-and-physiologic-parameters-in-relation-to-papilledema-severity
#2
David Fleischman, Jennifer T Perry, R Rand Allingham, Sandra S Stinnett, Gita M Fleischman, Syndee J Givre, David A Chesnutt
OBJECTIVE: Some case reports suggest that the translaminar pressure difference is important in cases of papilledema. The purpose of this study was to determine ocular, physiologic, and demographic factors associated with papilledema severity. DESIGN: Retrospective, blinded study. PARTICIPANTS: Patients who had undergone a diagnostic lumbar puncture and had a diagnosis of papilledema in conjunction with idiopathic intracranial hypertension between 2004 and 2012 were included in the study...
February 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28236869/intraventricular-hemorrhage-after-dural-fistula-embolization
#3
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
#4
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
https://www.readbyqxmd.com/read/28236064/the-disconnected-shunt-a-window-of-opportunities
#5
Jonathan Roth, Shlomi Constantini
INTRODUCTION: Shunt disconnection (SD), or migration of the distal end to extra-peritoneal tissues, may lead to shunt malfunction or be diagnosed incidentally. We present a systematic approach for treatment options that is tailored to each patient's personalized history, CSF physiology, and distribution (MRI), as well as a careful informed consent process. METHODS: We present two algorithms, for symptomatic and asymptomatic SD. In cases presenting with symptomatic elevated intracranial pressure, a distal shunt revision (DSR), or, in selected patients, an endoscopic third ventriculostomy (ETV), should be performed...
February 24, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28235859/an-international-collaboration-studying-the-physiological-and-anatomical-cerebral-effects-of-carbon-dioxide-during-head-down-tilt-bed-rest-the-spacecot-study
#6
Karina Marshall-Goebel, Edwin Mulder, Dorit Donoviel, Gary Strangman, Jose I Suarez, Chethan Venkatasubba Rao, Petra Frings-Meuthen, Ulrich Limper, Jörn Rittweger, Eric M Bershad
Exposure to the microgravity environment results in various adaptive and maladaptive physiological changes in the human body, with notable ophthalmic abnormalities developing during 6-month missions on the International Space Station (ISS). These findings have led to the hypothesis that the loss of gravity induces a cephalad fluid shift, decreased cerebral venous outflow and increased intracranial pressure (ICP) which may be further exacerbated by increased ambient carbon dioxide (CO2) levels on the ISS. Here we describe the "SPACECOT study" (Studying the Physiological and Anatomical Cerebral Effects of CO2 during Head-Down Tilt), a randomized, double-blinded cross-over design study with two conditions: 29 h of 12° head-down tilt (HDT) with ambient air and 29 h of 12° HDT with 0...
February 23, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28235505/tension-pneumomediastnum-a-rare-cause-of-acute-intraoperative-circulatory-collapse-in-the-setting-of-unremarkable-tee-findings
#7
Jonathan B Weaver, Avinash B Kumar
DESIGN: Case report. SETTING: Operating room. PATIENT: 25YF, ASA IV E who underwent an emergent decompressive craniectomy for refractory intracranial hypertension secondary to acute intracranial hemorhage. INTERVENTIONS: A 25Y caucasian female presented with acute intracranial hemorrhage with intraventricular extension secondary to Moya Moya disease. Post admisison, she underwent an emergent decompressive craniectomy for medically refractory intracranial hypertension...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28230563/implementation-of-an-early-mobility-pathway-in-neurointensive-care-unit-patients-with-external-ventricular-devices
#8
Megan Moyer, Bethany Young, Joseph Borst, William Pino, Marisa Hart, Jesse LoBreglio, Derek Zaleski, Isaira Leonor, David Kung, Michelle Smith, Eric Zager, M Sean Grady, Monisha Kumar
BACKGROUND: Patients with an external ventricular drain (EVD) may not be readily mobilized because of concerns of catheter dislodgment and/or inappropriate cerebrospinal fluid drainage. Delayed mobilization may result in longer hospital stays and an increased risk for complications related to immobility. We aimed to determine the safety, feasibility, and outcome of an EVD mobilization protocol in patients with subarachnoid hemorrhage (SAH). METHODS: A multidisciplinary group developed a formal algorithm for the mobilization of patients with SAH with EVDs...
February 23, 2017: Journal of Neuroscience Nursing: Journal of the American Association of Neuroscience Nurses
https://www.readbyqxmd.com/read/28228396/case-of-a-cerebral-abscess-caused-by-porphyromonas-gingivalis-in-a-subject-with-periodontitis
#9
Frederic Van der Cruyssen, Koenraad Grisar, Honorine Maes, Constantinus Politis
We report the case of a 65-year-old man presenting with generalised seizures after developing a right frontal brain abscess. Stereotactic aspiration and subsequent matrix assisted laser desorption/ionisation time-of-flight analyzer (MALDI-TOF) spectrometry revealed Porphyromonas gingivalis as the only causative anaerobe microorganism. Secondary incision and drainage was required due to neurological deterioration with increased dimensions of the abscess, intracranial pressure and formation of a subdural occipitoparietal empyema...
February 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28227508/design-and-evaluation-of-a-low-cost-intracranial-pressure-monitoring-system
#10
Ranjani Sampath Kumaran, Bradly Greger, Jennifer Blain Christen, Ranjani Sampath Kumaran, Bradly Greger, Jennifer Blain Christen, Jennifer Blain Christen, Ranjani Sampath Kumaran, Bradly Greger
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/28226898/inductive-passive-sensor-for-intraparenchymal-and-intraventricular-monitoring-of-intracranial-pressure
#11
Mohammad H Behfar, Emily Abada, Lauri Sydanheimo, Ken Goldman, Aaron J Fleischman, Nalin Gupta, Leena Ukkonen, Shuvo Roy, Mohammad H Behfar, Emily Abada, Lauri Sydanheimo, Ken Goldman, Aaron J Fleischman, Nalin Gupta, Leena Ukkonen, Shuvo Roy, Lauri Sydanheimo, Aaron J Fleischman, Leena Ukkonen, Mohammad H Behfar, Nalin Gupta, Shuvo Roy, Ken Goldman, Emily Abada
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/28224197/erratum-to-brain-trauma-foundation-guidelines-for-intracranial-pressure-monitoring-compliance-and-effect-on-outcome
#12
Alberto Aiolfi, Elizabeth Benjamin, Desmond Khor, Kenji Inaba, Lydia Lam, Demetrios Demetriades
No abstract text is available yet for this article.
February 21, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28223179/biological-aspects-of-axonal-damage-in-glaucoma-a-brief-review
#13
REVIEW
Ernst R Tamm, C Ross Ethier, Claude Burgoyne, C Ross Ethier, Ernst R Tamm, Cheri Stowell, John E Dowling, Crawford Downs, Mark H Ellisman, Steven Fisher, Brad Fortune, Marcus Fruttiger, Tatjana Jakobs, Geoffrey Lewis, Claire H Mitchell, John Morrison, Sansar C Sharma, Ian Sigal, Michael Sofroniew, Lin Wang, Janey Wiggs, Samuel Wu, Richard H Masland
Intraocular pressure (IOP) is a critical risk factor in glaucoma, and the available evidence derived from experimental studies in primates and rodents strongly indicates that the site of IOP-induced axonal damage in glaucoma is at the optic nerve head (ONH). However, the mechanisms that cause IOP-induced damage at the ONH are far from understood. A possible sequence of events could originate with IOP-induced stress in the ONH connective tissue elements (peripapillary sclera, scleral canal and lamina cribrosa) that leads to an increase in biomechanical strain...
February 18, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28220397/neuron-specific-enolase-levels-as-a-marker-for-possible-neuronal-damage-in-idiopathic-intracranial-hypertension
#14
Yavuz Samancı, Bedia Samancı, Erdi Şahin, Güneş Altıokka-Uzun, Cem İsmail Küçükali, Erdem Tüzün, Betül Baykan
Although formerly considered as a "benign" disease, the presence of some important problems such as vision loss, resistance to appropriate medical treatment and relapses suggests that neuronal damage might play a role in the pathophysiology of IIH. In order to demonstrate possible neuronal damage/dysfunction participating in IIH pathophysiology, we aimed to investigate the relationship between serum neuron-specific enolase (NSE) levels and clinical features in patients with idiopathic intracranial hypertension (IIH)...
February 20, 2017: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/28219789/acetazolamide-lowers-intracranial-pressure-and-modulates-the-cerebrospinal-fluid-secretion-pathway-in-healthy-rats
#15
Maria Uldall, Hannah Botfield, Inger Jansen-Olesen, Alexandra Sinclair, Rigmor Jensen
Acetazolamide is one of the most widely used drugs for lowering intracranial pressure (ICP) and is believed to reduce cerebrospinal fluid (CSF) secretion via its action on the choroid plexus (CP). In the CP the main driving force for CSF secretion is primarily active transport of Na(+) ions facilitated by the Na/K ATPase. Transmembrane water channels, known as aquaporins (AQP), are also present in the CP and play an important role in the movement of water. In the present study, we investigated the effect of a single dose acetazolamide on the activity of the Na/K ATPase and ICP...
February 17, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28219399/noninvasive-detection-of-alarming-intracranial-pressure-changes-by-auditory-monitoring-in-early-management-of-brain-injury-a-prospective-invasive-versus-noninvasive-study
#16
Fabrice Giraudet, François Longeras, Aurélien Mulliez, Aurélie Thalamy, Bruno Pereira, Paul Avan, Laurent Sakka
BACKGROUND: In brain-injured patients intracranial pressure (ICP) is monitored invasively by a ventricular or intraparenchymal transducer. The procedure requires specific expertise and exposes the patient to complications such as malposition, hemorrhage or infection. As inner-ear fluid compartments are connected to the cerebrospinal fluid space, ICP changes elicit subtle changes in the physiology of the inner ear. Notably, we previously demonstrated that the phase of cochlear microphonic potential (CM) generated by sound stimuli rotates with ICP...
February 21, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28217162/a-rare-case-of-giant-occipital-meningocele-with-dandy-walker-syndrome-can-it-grow-bigger-than-this
#17
Dipanker Singh Mankotia, Guru Dutta Satyarthee, Bhoopendra Singh, Bhawani Shankar Sharma
Association of Dandy-Walker syndrome with occipital meningocele (OMC) is extremely rare and about thirty cases are reported till date in the Western literature. However, OMC is classified by Talamonti et al. into small, large, and giant categories with respective diameters were upto 5 cm in small, large with 5-9 cm, and giant with >9 cm. Usually the size of OMC progressively increases as raised intracranial pressure leads to compensatory cerebrospinal fluid escape into sac with the growth of children. Authors report an interesting case of an 18-month-old female child with extra-gigantic OMC, whose size was almost same since birth, representing the first case of its kind, who underwent successful surgical repair...
October 2016: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28217049/effectiveness-of-sodium-thiopentone-propofol-and-etomidate-as-an-ideal-intravenous-anesthetic-agent-for-modified-electroconvulsive-therapy
#18
Altaf Hussain Mir, Nida Farooq Shah, Mehraj Ud Din, Shabir Ahmad Langoo, Fayaz Ahmad Reshi
INTRODUCTION: Electroconvulsive therapy (ECT) is a well-established psychiatric treatment in which seizures are electrically induced in patients for therapeutic effects. ECT can produce severe disturbances in the cardiovascular system and a marked increase in cerebral blood flow and intracranial pressure. These cardiovascular changes may be altered using various anesthetic drugs. AIM AND OBJECTIVES: This study was undertaken to compare the effects of intravenous (IV) sodium thiopentone, propofol, and etomidate, used as IV anesthetic agents in modified ECT as regards, induction time and quality of anesthesia, alteration of hemodynamics, seizure duration, and recovery time...
January 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/28216365/automated-pressure-controlled-cerebrospinal-fluid-drainage-during-open-thoracoabdominal-aortic-aneurysm-repair
#19
Yamume Tshomba, Marco Leopardi, Daniele Mascia, Andrea Kahlberg, Andrea Carozzo, Silvio Magrin, Germano Melissano, Roberto Chiesa
OBJECTIVE: Perioperative cerebrospinal fluid (CSF) drainage is a well-established technique for spinal cord protection during thoracoabdominal aortic aneurysm (TAAA) open repair and is usually performed using dripping chamber-based systems. A new automated device for controlled and continuous CSF drainage, designed to maintain CSF pressure around the desired set values, thus avoiding unnecessary drainage, is currently available. The aim of our study was to determine whether the use of the new LiquoGuard automated device (Möller Medical GmbH, Fulda, Germany) during TAAA open repair was safe and effective in maintaining the desired CSF pressure values and whether the incidence of complications was reduced compared with a standard catheter connected to a dripping chamber...
February 16, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28215710/altered-mental-status-in-the-emergency-department-can-an-electrocardiogram-show-the-right-way-to-go
#20
Andre Dias, Emiliana Franco, Jasmine Martinez, Vincent M Figueredo
A 38-year-old African American male patient with a past medical history of human immunodeficiency virus and schizophrenia who was noncompliant with medications presented to the emergency department (ED) after activation of the local crisis response center for altered mental status. Upon arrival he was lethargic and uncooperative, unable to provide any significant details apart from pleuritic chest pain. His blood pressure was 133/88 mmHg, heart rate 43 beats per minute and initial body temperature 36.1 °C which prompted an electrocardiogram (EKG)...
February 2, 2017: Journal of Electrocardiology
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