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Increased intracranial pressure

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https://www.readbyqxmd.com/read/29628584/evaluation-of-the-hemodynamic-response-of-intravenous-clonidine-versus-ropivacaine-scalp-block-to-insertion-of-scalp-pins-in-neurosurgical-patients
#1
Saraswathi Nagappa, Sandhya Kalappa, Raghavendra Biligiri Sridhara
Background: The application of the skull-pin head-holder, used to stabilize the head during neurosurgical procedures, produces an intense nociceptive stimulus and results in abrupt increases in blood pressure and cerebral blood flow under general anesthesia. Different anesthetic and pharmacologic techniques, including local anesthetics, narcotics, antihypertensives, and deepening of anesthesia with inhalation anesthetics, have been used to blunt this deleterious effect with variable success...
January 2018: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/29628552/ultrasonographic-optic-nerve-sheath-diameter-as-a-surrogate-measure-of-raised-intracranial-pressure-in-severe-pregnancy-induced-hypertension-patients
#2
Shiv Kumar Singh, Kiran Bhatia
Context: It is a well-known fact that severe pregnancy-induced hypertension (PIH) can be disastrous at times as it can cause a lot of complications to both pregnant women and her baby. Hence, it is always desirable to know the extent of severity by a real-time and easily accessible modality like ultrasound. Aims: The aim of the study was to evaluate the incidence of raised intracranial pressure (ICP) in severe preeclampsia and eclampsia patients using ocular ultrasonography with optic nerve sheath diameter (ONSD) measurement...
January 2018: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/29626002/evaluating-off-label-uses-of-acetazolamide
#3
REVIEW
Megan A Van Berkel, Jessica L Elefritz
PURPOSE: Current off-label uses of acetazolamide in hospitalized patients are reviewed. SUMMARY: Acetazolamide is a carbonic anhydrase inhibitor typically used for indications including epilepsy, glaucoma, edema, and altitude sickness but it may be prescribed in hospitalized patients for off-label indications. It inhibits carbonic anhydrase, which leads to reduced hydrogen ion secretion in the proximal renal tubule, resulting in increased bicarbonate and cation excretion and causing urinary alkalization and diuresis...
April 15, 2018: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/29621631/spontaneous-intracranial-hypotension-is-diagnosed-by-a-combination-of-lipocalin-type-prostaglandin-d-synthase-and-brain-type-transferrin-in-cerebrospinal-fluid
#4
Yuta Murakami, Koichi Takahashi, Kyoka Hoshi, Hiromi Ito, Mayumi Kanno, Kiyoshi Saito, Kenneth Nollet, Yoshiki Yamaguchi, Masakazu Miyajima, Hajime Arai, Yasuhiro Hashimoto, Tatsuo Mima
BACKGROUND: Spontaneous intracranial hypotension (SIH) is caused by cerebrospinal fluid (CSF) leakage. Definitive diagnosis can be difficult by clinical examinations and imaging studies. METHODS: SIH was diagnosed with the following criteria: (i) evidence of CSF leakage by cranial magnetic resonance imaging (MRI) findings of intracranial hypotension and/or low CSF opening pressure; (ii) no recent history of dural puncture. We quantified CSF proteins by ELISA or Western blotting...
April 2, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29621117/cerebral-multimodal-monitoring-in-sepsis-an-experimental-study
#5
Pedro Kurtz, Joana C d'Avila, Darwin Prado, Caroline Madeira, Charles Vargas-Lopes, Rogerio Panizzutti, Luciano Cesar Pontes Azevedo, Fernando A Bozza
Acute brain dysfunction is a complication of sepsis and its pathophysiology remains poorly understood. We studied the brain metabolism in a resuscitated animal model of sepsis. Twelve anesthetized, mechanically ventilated and invasively monitored pigs were allocated to a sham procedure (N = 5) or sepsis (N = 7). Sepsis was induced through fecal inoculation in the peritoneum. Fluid resuscitation was maintained during the entire study period. Animals were observed until spontaneous death or for a maximum of 24 hours...
April 4, 2018: Shock
https://www.readbyqxmd.com/read/29618196/the-course-of-intracranial-pressure-after-antipyretic-therapy-in-acute-brain-injury
#6
Edoardo Picetti, Patrizia Ceccarelli, Laura Malchiodi, Francesca Mensi, Solange Risolo, Franco Servadei, Corrado Iaccarino, Ilaria Rossi, Sandra Rossi
BACKGROUND: The present study was performed to evaluate intracranial pressure (ICP) variations after antipyretic therapy and their relationship to ICP at baseline (ICPbas) in acute brain injury (ABI) patients. METHODS: We completed a retrospective analysis on data derived from 2 previously published prospective observational studies. The first study involved 32 ABI patients and was performed to elucidate the cerebral and hemodynamic effects of intravenous (IV) paracetamol...
April 4, 2018: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/29618106/contribution-of-intrasellar-pressure-elevation-to-headache-manifestation-in-pituitary-adenoma-evaluated-with-intraoperative-pressure-measurement
#7
Yasuhiko Hayashi, Yasuo Sasagawa, Masahiro Oishi, Daisuke Kita, Koichi Misaki, Issei Fukui, Osamu Tachibana, Mitsutoshi Nakada
BACKGROUND: Headache frequently occurs in patients with pituitary adenoma and is reported in large as well as small adenomas. However, the exact mechanism of headache derived from pituitary adenoma remains unknown. OBJECTIVE: To evaluate the contribution of intrasellar pressure (ISP) to headache manifestation by using intraoperative ISP measurement. METHODS: The records of 108 patients who had first-time transsphenoidal surgery for pituitary adenoma were reviewed retrospectively...
March 29, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29616650/pediatric-angiostrongyliasis
#8
F Lombard, D Basset, G Cambonie, P Bastien, E Jeziorski
Angiostrongyliasis, the leading cause worldwide of eosinophilic meningitis, is an emergent disease due to Angiostrongylus cantonensis larvae, transmitted accidentally to humans. Contamination of children usually occurs by direct contact with an infected mollusk. Eosinophilic meningoencephalitis is the major clinical feature of this parasitic infection in humans. It is usually benign for adults, but more severe for children. Clinical symptoms usually combine fever, meningitis, and neurological signs (somnolence, moaning, hypotonia, convulsions, and increased intracranial pressure)...
February 1, 2018: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/29611866/gamma-knife-radiosurgery-for-arteriovenous-malformations-general-principles-and-preliminary-results-in-a-swiss-cohort
#9
Matthieu Raboud, Constantin Tuleasca, Philippe Maeder, Luis Schiappacasse, Maud Marguet, Roy Thomas Daniel, Marc Levivier
INTRODUCTION: Arteriovenous malformations (AVMs) are a type of vascular malformation characterised by an abnormal connection between arteries and veins, bypassing the capillary system. This absence of capillaries generates an elevated pressure (hyperdebit), in both the AVM and the venous drainage, increasing the risk of rupture. Management modalities are: observation, microsurgical clipping, endovascular treatment and radiosurgery. The former can be used alone or in the frame of a multidisciplinary approach...
April 3, 2018: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29610967/early-analysis-of-operative-management-of-chiari-i-malformation-in-pediatric-cystic-fibrosis-patients
#10
Derek C Samples, Dewey J Thoms, Izabela Tarasiewicz
INTRODUCTION: Chiari I malformation, defined as herniation of the cerebellar tonsils at least 5 mm below the foramen magnum, can result from congenital or acquired pathology. While the mechanism is not well understood, an association between Chiari I and cystic fibrosis has been described in the literature. The lifelong respiratory status management necessitated by cystic fibrosis creates a greater risk of Chiari symptomatology as well as post-operative CSF-related complications in the setting of duraplasty secondary to recurrent transient increases in intracranial pressure...
April 2, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29608535/genetic-survey-of-adult-onset-idiopathic-intracranial-hypertension
#11
Markus H Kuehn, Rajashree Mishra, Benjamin E Deonovic, Kimberly N Miller, Shana E McCormack, Grant T Liu, Mark J Kupersmith, Michael Wall
BACKGROUND: Idiopathic intracranial hypertension (IIH) is a condition characterized by increased intracranial pressure of unknown cause. IIH has been shown to be associated with female sex as well as obesity. This genome-wide association study was performed to determine whether genetic variants are associated with this condition. METHODS: We analyzed the chromosomal DNA of 95 patients with IIH enrolled in the Idiopathic Intracranial Hypertension Treatment Trial and 95 controls matched on sex, body mass index, and self-reported ethnicity...
March 30, 2018: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/29602888/pseudotumor-cerebri-as-the-presentation-of-lyme-disease-in-a-non-endemic-area
#12
Marta Ezequiel, Ana Teresa Teixeira, Maria João Brito, Catarina Luís
Intracranial hypertension is a rare entity in prepubertal children, and its differential diagnosis includes a number of systemic diseases, drugs, vitamin deficiencies and excesses, and hereditary conditions. Infectious aetiology is rare. The case of a 9-year-old boy with intracranial hypertension secondary to acute neuroborreliosis is described. He presented with daily pulsatile frontotemporal headache, pallor, photophobia and phonophobia. His neurological examination revealed papilledema with no nuchal rigidity...
March 30, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29596338/non-invasive-electromagnetic-skin-patch-sensor-to-measure-intracranial-fluid-volume-shifts
#13
Jacob Griffith, Kim Cluff, Brandon Eckerman, Jessica Aldrich, Ryan Becker, Peer Moore-Jansen, Jeremy Patterson
Elevated intracranial fluid volume can drive intracranial pressure increases, which can potentially result in numerous neurological complications or death. This study's focus was to develop a passive skin patch sensor for the head that would non-invasively measure cranial fluid volume shifts. The sensor consists of a single baseline component configured into a rectangular planar spiral with a self-resonant frequency response when impinged upon by external radio frequency sweeps. Fluid volume changes (10 mL increments) were detected through cranial bone using the sensor on a dry human skull model...
March 29, 2018: Sensors
https://www.readbyqxmd.com/read/29596291/interprofessional-simulations-promote-knowledge-retention-and-enhance-perceptions-of-teamwork-skills-in-a-surgical-trauma-burn-intensive-care-unit-setting
#14
Katie L George, Beth Quatrara
BACKGROUND: The current state of health care encompasses highly acute, complex patients, managed with ever-changing technology. The ability to function proficiently in critical care relies on knowledge, technical skills, and interprofessional teamwork. Integration of these factors can improve patient outcomes. Simulation provides "hands-on" practice and allows for the integration of teamwork into knowledge/skill training. However, simulation can require a significant investment of time, effort, and financial resources...
May 2018: Dimensions of Critical Care Nursing: DCCN
https://www.readbyqxmd.com/read/29589330/the-use-of-continuous-eeg-monitoring-in-intensive-care-units-in-the-netherlands-a-national-survey
#15
Danny M W Hilkman, Walther N K A van Mook, Werner H Mess, Vivianne H J M van Kranen-Mastenbroek
BACKGROUND: Currently, continuous electroencephalographic monitoring (cEEG) is the only available diagnostic tool for continuous monitoring of brain function in intensive care unit (ICU) patients. Yet, the exact relevance of routinely applied ICU cEEG remains unclear, and information on the implementation of cEEG, especially in Europe, is scarce. This study explores current practices of cEEG in adult Dutch ICU departments focusing on organizational and operational factors, development over time and factors perceived relevant for abstaining its use...
March 27, 2018: Neurocritical Care
https://www.readbyqxmd.com/read/29581240/intracranial-arterial-dolichoectasia-and-stenosis-risk-factors-and-relation-to-cerebral-small-vessel-disease
#16
Fei-Fei Zhai, Shuang Yan, Ming-Li Li, Fei Han, Quan Wang, Li-Xin Zhou, Jun Ni, Ming Yao, Shu-Yang Zhang, Li-Ying Cui, Zheng-Yu Jin, Yi-Cheng Zhu
BACKGROUND AND PURPOSE: Intracranial arterial dolichoectasia (IADE) is a poorly understood arteriopathy compared with intracranial atherosclerotic stenosis (ICAS). We aimed to investigate the risk factors of IADE and ICAS and their relationship with neuroimaging markers of cerebral small vessel disease in a population-based study. METHODS: This study comprised 1237 participants (aged 57.2±9.4 years, 37.6% men) who underwent brain magnetic resonance imaging and magnetic resonance angiography...
March 26, 2018: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29579815/utility-of-transcranial-doppler-in-the-coordination-of-transplants-10-years-of-experience
#17
A Cacciatori, M Godino, R Mizraji
Transcranial Doppler (TCD) integrated to multimodal neuromonitoring of neurocritical patients is a useful tool in the clinical follow-up. A retrospective and descriptive study of 194 patients who were admitted into the intensive care unit (ICU) was carried out from December 2007 to February 2017. We analyzed the distribution of study frequencies with respect to the pathologies that motivated them, the characteristics of patients who evolved to brain death (BD), and most frequent patterns of cerebral circulatory arrest...
March 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29576930/retinal-vessel-diameters-change-within-1-hour-of-intracranial-pressure-lowering
#18
Heather E Moss, Gautam Vangipuram, Zainab Shirazi, Mahnaz Shahidi
Purpose: We tested the hypotheses that retinal venule diameter (Dv) is associated with baseline intracranial pressure (ICP) level and that Dv is reduced shortly after ICP lowering. Methods: Dv and arteriole diameter (Da) were extracted from scanning laser ophthalmoscopic images in 40 eyes of 20 adult human subjects (10 with and 10 without papilledema) immediately before and after measurement of ICP (range, 10-55 cm H2 O) and ICP lowering by cerebrospinal fluid (CSF) drainage via lumbar puncture (LP)...
March 2018: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/29575852/streptococcus-suis-a-re-emerging-pathogen-associated-with-occupational-exposure-to-pigs-or-pork-products-part-ii-pathogenesis
#19
Jacek Dutkiewicz, Violetta Zając, Jacek Sroka, Bernard Wasiński, Ewa Cisak, Anna Sawczyn, Anna Kloc, Angelina Wójcik-Fatla
<i>Streptococcus suis</i> is a re-emerging zoonotic pathogen that may cause severe disease, mostly meningitis, in pigs and in humans having occupational contact with pigs and pork, such as farmers, slaughterhose workers and butchers. The first stage of the pathogenic process, similar in pigs and humans, is adherence to and colonisation of mucosal and/or epithelial surface(s) of the host. The second stage is invasion into deeper tissue and extracellular translocation of bacterium in the bloodstream, either free in circulation or attached to the surface of monocytes...
March 14, 2018: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/29574222/the-dilemma-of-anticoagulating-patients-with-cerebral-venous-thrombosis-who-underwent-decompressive-craniectomy
#20
Plinio Duarte Mendes, Clayton Lucas da Silva Lopes, Diogo Mendes França, Jarbas Carvalhais Reis, Augusto Cesar de Jesus Santos, Rogerio Zenobio Darwich
BACKGROUND: Cerebral venous thrombosis (CVT) is an uncommon subtype of cerebrovascular accident. The time to be allowed between decompressive craniectomy (DC) and the onset of anticoagulation in patients diagnosed with CVT is still a controversial topic among neurosurgeons, neurologists, and intensivists. CASE DESCRIPTION: We present a brief clinical case report of a female patient who underwent DC and was later diagnosed with CVT, for whom anticoagulation was initiated 24 hours postoperatively...
March 21, 2018: World Neurosurgery
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