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https://www.readbyqxmd.com/read/28634578/neonatal-venous-thromboembolism
#1
REVIEW
Kristina M Haley
Neonates are the pediatric population at highest risk for development of venous thromboembolism (VTE), and the incidence of VTE in the neonatal population is increasing. This is especially true in the critically ill population. Several large studies indicate that the incidence of neonatal VTE is up almost threefold in the last two decades. Central lines, fluid fluctuations, sepsis, liver dysfunction, and inflammation contribute to the risk profile for VTE development in ill neonates. In addition, the neonatal hemostatic system is different from that of older children and adults...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28634463/protective-effect-of-n-acetylcysteine-amide-on-blast-induced-increase-in-intracranial-pressure-in-rats
#2
Usmah Kawoos, Richard M McCarron, Mikulas Chavko
Blast-induced traumatic brain injury is associated with acute and possibly chronic elevation of intracranial pressure (ICP). The outcome after TBI is dependent on the progression of complex processes which are mediated by oxidative stress. So far, no effective pharmacological protection against TBI exists. In this study, rats were exposed to a single or repetitive blast overpressure (BOP) at moderate intensities of 72 or 110 kPa in a compressed air-driven shock tube. The degree and duration of the increase in ICP were proportional to the intensity and frequency of the blast exposure(s)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28632582/the-effect-of-resuscitative-endovascular-balloon-occlusion-of-the-aorta-partial-aortic-occlusion-and-aggressive-blood-transfusion-on-traumatic-brain-injury-in-a-swine-multiple-injuries-model
#3
M Austin Johnson, Timothy K Williams, Sarah-Ashley E Ferencz, Anders J Davidson, Rachel M Russo, William T O'Brien, Joseph M Galante, J Kevin Grayson, Lucas P Neff
BACKGROUND: Despite clinical reports of poor outcomes, the degree to which resuscitative endovascular balloon occlusion of the aorta (REBOA) exacerbates traumatic brain injury (TBI) is not known. We hypothesized that combined effects of increased proximal mean arterial pressure (pMAP), carotid blood flow (Qcarotid), and intracranial pressure (ICP) from REBOA would lead to TBI progression compared with partial aortic occlusion (PAO) or no intervention. METHODS: Twenty-one swine underwent a standardized TBI via computer Controlled cortical impact followed by 25% total blood volume rapid hemorrhage...
July 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28632556/watertight-sealing-without-lumbar-drainage-for-incidental-ventral-dural-defect-in-transthoracic-spine-surgery-a-retrospective-review-of-53-cases
#4
Sang-Hyeop Jeon, Sang-Ho Lee, Yi Sheng Tsang, Tag-Geun Jung, Ki-Hyoung Moon, Gun Choi, Ketan D Dilip
STUDY DESIGN: A retrospective review. OBJECTIVES: To evaluate the therapeutic efficacy of the triple layer closure technique to establish watertight sealing without diversion of lumbar drainage, in preventing persistent incidental subarachnoid-pleural fistula and other neurological complications related to excessive drainage of cerebrospinal fluid (CSF) after dural defect in transthoracic ossified posterior longitudinal ligament (OPLL) surgery. SUMMARY OF BACKGROUND DATA: CSF leakage into the pleural cavity leads to unfavorable conditions for natural healing of incidental durotomy due to the negative pressure environment of the pleural space and lack of wound healing around the bony cavity near the decompressed spinal cord...
July 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28631971/rapidly-progressive-dementia-an-unusual-cause
#5
Aastha Takkar, Veenu Singla, Manish Modi, Vivek Gupta, Manoj K Goyal, Vivek Lal
Brain metastases are known to be present with a history of increased intra-cranial pressure headache, seizures or altered sensorium. Corresponding to the clinical brain metastases are the most feared complication of a systemic cancer. Classically, brain metastases are associated with significant morbidity and are known to present with a history of increased intracranial pressure headache, seizures or altered sensorium. Neuroimaging is usually suggestive of massive peri-lesional edema and mass effect surrounding the space occupying lesions...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28630478/assessment-of-the-role-of-intracranial-hypertension-and-stress-on-hippocampal-cell-apoptosis-and-hypothalamic-pituitary-dysfunction-after-tbi
#6
Huajun Tan, Weijian Yang, Chenggang Wu, Baolong Liu, Hao Lu, Hong Wang, Hua Yan
In recent years, hypopituitarism caused by traumatic brain injury (TBI) has been explored in many clinical studies; however, few studies have focused on intracranial hypertension and stress caused by TBI. In this study, an intracranial hypertension model, with epidural hematoma as the cause, was used to explore the physiopathological and neuroendocrine changes in the hypothalamic-pituitary axis and hippocampus. The results demonstrated that intracranial hypertension increased the apoptosis rate, caspase-3 levels and proliferating cell nuclear antigen (PCNA) in the hippocampus, hypothalamus, pituitary gland and showed a consistent rate of apoptosis within each group...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28627088/astrogliosis-and-impaired-aquaporin-4-and-dystrophin-systems-in-idiopathic-normal-pressure-hydrocephalus
#7
Per Kristian Eide, Hans-Arne Hansson
AIMS: Idiopathic normal pressure hydrocephalus (iNPH) is one subtype of dementia that may improve following drainage of cerebrospinal fluid (CSF). This prospective observational study explored whether expression of the water channel aquaporin-4 (AQP4) and the anchoring molecule dystrophin 71 (Dp71) are altered at astrocytic perivascular endfeet and in adjacent neuropil of iNPH patient. Observations were related to measurements of pulsatile and static intracranial pressure (ICP). METHODS: The study included iNPH patients undergoing overnight monitoring of the pulsatile/static ICP, in whom a biopsy was taken from the frontal cerebral cortex during placement of the ICP sensor...
June 19, 2017: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/28627086/the-hypertension-of-hemophilia-is-associated-with-vascular-remodeling-in-the-joint
#8
Richard Fw Barnes, Thomas J Cramer, Tudor H Hughes, Annette von Drygalski
OBJECTIVE: Hemophilic arthropathy is associated with pronounced vascular joint remodeling. Also, compared to the general population, PWH have a higher prevalence of hypertension not explained by usual risk factors. Since vascular remodeling in various vascular beds is a hallmark of hypertension, we hypothesized that vascular joint remodeling is associated with elevated blood pressures and hypertension. METHODS: Elbows, knees and ankles of 28 adult PWH were evaluated for vascular abnormalities with MSKUS/PD, as well as for radiographic and clinical status and pain...
June 19, 2017: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/28625587/a-rabbit-model-of-aneurysmal-subarachnoid-hemorrhage-by-ear-central-artery-suprasellar-cistern-shunt
#9
Jing Lu, Fuxiang Chen, Bing Cai, Fan Chen, Dezhi Kang
Aneurysmal subarachnoid hemorrhage (aSAH) is a life-threatening hemorrhagic cerebrovascular disease. The concept of early brain injury (EBI), induced by sharply increased intracranial pressure (ICP) and low cerebral perfusion pressure (CPP) with cerebral global ischemia following aneurysm rupture, has been increasingly accepted. However, EBI has not been well studied partly due to lack of an ideal animal model. The purpose of this study was to establish a new aSAH model which can mimic the pathophysiological damage of EBI...
June 15, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28625441/the-protective-effects-of-dexmedetomidine-on-ischemic-brain-injury-a-meta-analysis
#10
REVIEW
Lianxiang Jiang, Meizhu Hu, Yan Lu, Ya Cao, Yan Chang, Zeping Dai
BACKGROUND: Intracranial lesions, trauma or surgery-related damage activate immune inflammation and neuroendocrine responses, causing ischemic brain injury. Studies have shown that inflammatory cascade mediated by neuroendocrine hormones and proinflammatory mediators is implicated in the pathophysiology of ischemic brain injury. Alpha2-adrenoceptor agonists, dexmedetomidine, is widely used as neuroprotectants in anesthesia practice. However, it is still lack of a comprehensive meta-analysis to evaluate the neuroprotection of dexmedetomidine against ischemic brain injury via suppressing these two physiological responses...
August 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28625252/-cerebral-injury-induced-by-heat-stroke-and-the-therapeutic-effect-of-hyperbaric-oxygen-therapy
#11
Xiaoxiao Ni, Zhifeng Liu, Qiuyou Xie, Huasheng Tong, Lei Su, Ronghao Yu
With the global warming, the incidence of heat stroke was significantly higher than before. Severe heat stroke has a high mortality, high morbidity and consolidated central nervous system injury characteristics. The main features of severe heat stroke cerebral injury include cognitive impairment, delirium, convulsions and coma. Its mechanism is related with heat shock induced cerebral tissue ischemia and hypoxia, vascular dysfunction, secondary cascade inflammation and so on. Currently, the main treatment of heat stroke cerebral injury is the hypothermia therapy, dehydration for the reduction of intracranial pressure, naloxone and other cerebral protection and nutrition treatments...
June 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28624560/intracranial-hypotension-following-traumatic-brain-injury-a-diagnostic-and-therapeutic-challenge
#12
Jacob Chen Ming Low, Anan Shtaya, Samantha Hettige
BACKGROUND: Intracranial hypotension (IH) is a recognised cause of coma, however, the diagnosis is often challenging, especially in patients with superimposed traumatic brain injury (TBI). CASE REPORT: We report a case of a 67-year-old patient who became comatose following evacuation of bilateral acute subdural haematomas with concurrent respiratory failure. Imaging and intraparenchymal intracranial pressure (ICP) monitoring confirmed secondary IH. She was managed with an epidural blood patch, and a 72 hours period in the trendelenberg position guided by ICP monitoring and clinical assessment...
June 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28624169/dynamic-change-in-optic-nerve-after-intracranial-pressure-reduction-in-children
#13
Won June Lee, Hae Jin Kim, Ki Ho Park, Yong Woo Kim, Michael J A Girard, Jean Martial Mari, Seung-Ki Kim, Ji Hoon Phi, Jin Wook Jeoung
No abstract text is available yet for this article.
June 14, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28623925/human-jugular-vein-collapse-in-the-upright-posture-implications-for-postural-intracranial-pressure-regulation
#14
Petter Holmlund, Elias Johansson, Sara Qvarlander, Anders Wåhlin, Khalid Ambarki, Lars-Owe D Koskinen, Jan Malm, Anders Eklund
BACKGROUND: Intracranial pressure (ICP) is directly related to cranial dural venous pressure (P dural ). In the upright posture, P dural is affected by the collapse of the internal jugular veins (IJVs) but this regulation of the venous pressure has not been fully understood. A potential biomechanical description of this regulation involves a transmission of surrounding atmospheric pressure to the internal venous pressure of the collapsed IJVs. This can be accomplished if hydrostatic effects are cancelled by the viscous losses in these collapsed veins, resulting in specific IJV cross-sectional areas that can be predicted from flow velocity and vessel inclination...
June 17, 2017: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/28623520/prediction-of-intracranial-hypertension-through-noninvasive-intracranial-pressure-waveform-analysis-in-pediatric-hydrocephalus
#15
Matheus Fernando Manzolli Ballestero, Gustavo Frigieri, Brenno Caetano Troca Cabella, Sergio Mascarenhas de Oliveira, Ricardo Santos de Oliveira
PURPOSE: The purpose of this study is to evaluate a noninvasive device to assess intracranial pressure wave form in children with hydrocephalus. METHODS: A prospective and non-experimental descriptive-analytic study was performed. Fifty-six patients were enrolled in this study. They were divided in four groups: group A, children with clinically compensated hydrocephalus; B, surgically treated hydrocephalus; C, patients with acute intracranial hypertension due to hydrocephalus; and D, children without neurological disease (control)...
June 16, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28623468/-intracranial-pressure-monitoring-in-polytrauma-patients-with-traumatic-brain-injury
#16
REVIEW
T Neubauer, W Buchinger, E Höflinger, J Brand
BACKGROUND: The monitoring of intracranial pressure (ICP) represents a cornerstone in the intensive care of patients with traumatic brain injury (TBI) and the industry provides various technical solutions to this end. Decompressive craniectomy can be an option if conservative measures fail to reduce excessive ICP. OBJECTIVE: To examine the pathophysiology of ICP in trauma, the management of polytrauma involving TBI, and the indications for decompressive craniectomy; and to compare the different monitoring systems and their complications...
June 16, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28616896/high-resolution-transbulbar-ultrasonography-helping-differentiate-intracranial-hypertension-in-bilateral-optic-disc-oedema-patients
#17
Qian Chen, Weimin Chen, Min Wang, Xinghuai Sun, Yan Sha, Zhenxin Li, Guohong Tian
PURPOSE: The enlargement of optic nerve sheath diameter (ONSD) has been proven to be related with raised intracranial pressure (ICP). No prospective study has been focused on utilizing retrobulbar ultrasonography in optic disc oedema patient presented to ophthalmologist. METHODS: High-resolution transbulbar ultrasonography was performed in a cohort of patient presented with bilateral optic disc oedema. The subarachnoid space of optic nerve (SAS), ONSD and optic nerve diameter (OND) was measured prior to other ancillaries including lumbar puncture...
June 14, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28614970/effect-of-cerebrospinal-fluid-drainage-on-brain-tissue-oxygenation-in-traumatic-brain-injury
#18
Omar S Akbik, Mark Krasberg, Edwin M Nemoto, Howard Yonas
The effectiveness of cerebrospinal fluid (CSF) drainage in lowering high intracranial pressure (ICP) is well established in severe traumatic brain injury (TBI). However, recently the use of external ventricular drains and intracranial pressure monitors in traumatic brain injury has come under question. The aim of this retrospective study was to investigate the effect of CSF drainage on brain tissue oxygenation (PbtO2). Using a multimodality monitoring system, we continuously monitored brain tissue oxygenation (PbtO2) and parenchymal ICP during CSF drainage events via a ventriculostomy in 40 patients with severe traumatic brain injury (TBI)...
June 14, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28611643/uncommon-presentation-of-idiopathic-intracranial-hypertension-in-a-patient-with-polycystic-ovary-syndrome-a-case-report
#19
Anas Mohammad Albarrak, Suleiman Kojan
INTRODUCTION: Idiopathic intracranial hypertension is a rare condition characterized by increased intracranial pressure without clinical, laboratory, or radiological evidence of intracranial pathology. Early management could prevent irreversible outcomes. CASE PRESENTATION: A 17-year-old single Arabian female of Arab origin presented with a 2-day complaint of horizontal diplopia and transient visual obscurations. She denied any history of headache or decreased vision...
January 2017: Case Reports in Neurology
https://www.readbyqxmd.com/read/28611153/effects-of-short-term-mild-hypercapnia-during-head-down-tilt-on-intracranial-pressure-and-ocular-structures-in-healthy-human-subjects
#20
Steven S Laurie, Gianmarco Vizzeri, Giovanni Taibbi, Connor R Ferguson, Xiao Hu, Stuart M C Lee, Robert Ploutz-Snyder, Scott M Smith, Sara R Zwart, Michael B Stenger
Many astronauts experience ocular structural and functional changes during long-duration spaceflight, including choroidal folds, optic disc edema, globe flattening, optic nerve sheath diameter (ONSD) distension, retinal nerve fiber layer thickening, and decreased visual acuity. The leading hypothesis suggests that weightlessness-induced cephalad fluid shifts increase intracranial pressure (ICP), which contributes to the ocular structural changes, but elevated ambient CO2 levels on the International Space Station may also be a factor...
June 2017: Physiological Reports
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