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https://www.readbyqxmd.com/read/28801417/optic-nerve-sheath-diameter-sonography-for-the-diagnosis-of-increased-intracranial-pressure-a-systematic-review-and-meta-analysis-protocol
#1
Alex Koziarz, Niv Sne, Fraser Kegel, Waleed Alhazzani, Siddharth Nath, Jetan H Badhiwala, Timothy Rice, Paul Engels, Faidi Samir, Andrew Healey, Kamyar Kahnamoui, Laura Banfield, Sunjay Sharma, Kesava Reddy, Gregory W J Hawryluk, Andrew W Kirkpatrick, Saleh A Almenawer
INTRODUCTION: Increased intracranial pressure (ICP) is a significant neurological issue that may lead to permanent neurological sequelae. When evaluating patients with traumatic brain injury, it is crucial to identify those with high ICP in order to expedite ICP lowering measures and maintain adequate cerebral perfusion. Several measures are used to recognise patients with increased ICP including CT scan, MRI, ICP monitor, and lumbar puncture (LP). However, these tests can be invasive, associated with radiation exposure, contraindicated, or not readily available...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28771407/imaging-strategies-for-suspected-acute-cranial-shunt-failure-a-cost-effectiveness-analysis
#2
Jay Pershad, Andrew Taylor, M Kennedy Hall, Paul Klimo
OBJECTIVES: We compared cost-effectiveness of cranial computed tomography (CT), fast sequence magnetic resonance imaging (fsMRI), and ultrasonography measurement of optic nerve sheath diameter (ONSD) for suspected acute shunt failure from the perspective of a health care organization. METHODS: We modeled 4 diagnostic imaging strategies: (1) CT scan, (2) fsMRI, (3) screening ONSD by using point of care ultrasound (POCUS) first, combined with CT, and (4) screening ONSD by using POCUS first, combined with fsMRI...
August 2017: Pediatrics
https://www.readbyqxmd.com/read/28742869/ultrasound-non-invasive-measurement-of-intracranial-pressure-in-neurointensive-care-a-prospective-observational-study
#3
Chiara Robba, Danilo Cardim, Tamara Tajsic, Justine Pietersen, Michael Bulman, Joseph Donnelly, Andrea Lavinio, Arun Gupta, David K Menon, Peter J A Hutchinson, Marek Czosnyka
BACKGROUND: The invasive nature of the current methods for monitoring of intracranial pressure (ICP) has prevented their use in many clinical situations. Several attempts have been made to develop methods to monitor ICP non-invasively. The aim of this study is to assess the relationship between ultrasound-based non-invasive ICP (nICP) and invasive ICP measurement in neurocritical care patients. METHODS AND FINDINGS: This was a prospective, single-cohort observational study of patients admitted to a tertiary neurocritical care unit...
July 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28736129/clinical-and-radiological-predictors-of-malignant-middle-cerebral-artery-infarction-development-and-outcomes
#4
Angelique F Albert, Matthew A Kirkman
BACKGROUND: Optic nerve sheath diameter (ONSD) can predict intracranial hypertension and outcomes in severe traumatic brain injury. Its utility in middle cerebral artery (MCA) stroke is unknown. AIMS: We reviewed serial radiological measurements, including ONSD, in patients with MCA stroke undergoing decompressive craniectomy (DC) for malignant MCA syndrome and compared demographic, clinical, and radiological data with an age- and gender-matched group of nonmalignant MCA stroke patients...
July 20, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28727580/increase-in-intracranial-pressure-by-application-of-a-rigid-cervical-collar-a-pilot-study-in-healthy-volunteers
#5
Iscander M Maissan, Rein Ketelaars, Boris Vlottes, Sanne E Hoeks, Dennis den Hartog, Robert J Stolker
OBJECTIVES: Rigid cervical collars are known to increase intracranial pressure (ICP) in severe traumatic brain injury (TBI). Cerebral blood flow might decrease according to the Kellie Monroe doctrine. For this reason, the use of the collar in patients with severe TBI has been abandoned from several trauma protocols in the Netherlands. There is no evidence on the effect of a rigid collar on ICP in patients with mild or moderate TBI or indeed patients with no TBI. As a first step we tested the effect in healthy volunteers with normal ICPs and intact autoregulation of the brain...
July 19, 2017: European Journal of Emergency Medicine: Official Journal of the European Society for Emergency Medicine
https://www.readbyqxmd.com/read/28639043/ultrasonographic-optic-nerve-sheath-diameter-for-predicting-elevated-intracranial-pressure-during-laparoscopic-surgery-a-systematic-review-and-meta-analysis
#6
Eun Jung Kim, Bon-Nyeo Koo, Seung Ho Choi, Kyoungun Park, Min-Soo Kim
BACKGROUND: Laparoscopic surgery involves the creation of a carbon dioxide (CO2) pneumoperitoneum to facilitate a clear surgical view, which may result in an elevated intracranial pressure (ICP). Depending on the surgical area, steep Trendelenburg positioning may be used as well, further increasing the ICP. The objective of this study was to assess the effects of laparoscopic surgery on changes in ICP assessed by ultrasonographic measurement of optic nerve sheath diameter (ONSD), which is a generally accepted simple, reliable, and non-invasive ICP measurement technique...
June 21, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28637781/detecting-optic-nerve-head-swelling-on-ultrasound-and-optical-coherence-tomography-in-children-and-young-people-an-observational-study
#7
Annegret Hella Dahlmann-Noor, Gillian W Adams, Moritz Claudius Daniel, Alison Davis, Joanne Hancox, Melanie Hingorani, Patricia Ibanez, Becky McPhee, Himanshu Patel, Marie Restori, Clare Roberts, Maria Theodorou, James Acheson
BACKGROUND: Following high-profile cases, referrals for evaluation of 'suspicious optic discs' to eye clinics in the UK have sharply increased, asking ophthalmologists to reliably distinguish between true and pseudopapilloedema. Optic nerve sheath dilatation (ONSD) on ocular ultrasound (US) is considered a reliable sign of true papilloedema, but this test is not widely available. Recently, anterior bowing of Bruch's membrane (BM) and increased retinal nerve fibre layer thickness on optical coherence tomography (OCT) have emerged as indicators of intracranial hypertension, and OCT is widely available...
June 21, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28616896/high-resolution-transbulbar-ultrasonography-helping-differentiate-intracranial-hypertension-in-bilateral-optic-disc-oedema-patients
#8
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/28611153/effects-of-short-term-mild-hypercapnia-during-head-down-tilt-on-intracranial-pressure-and-ocular-structures-in-healthy-human-subjects
#9
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
https://www.readbyqxmd.com/read/28533826/a-novel-triage-tool-optic-nerve-sheath-diameter-in-traumatic-brain-injury-and-its-correlation-to-rotterdam-computed-tomography-ct-scoring
#10
Sudha Kiran Das, Sachin P Shetty, Kamal Kumar Sen
BACKGROUND: Optic nerve sheath diameter (ONSD) evaluated in CT imaging as well as Rotterdam CT Score (RCTS) are proven independent predictors of outcome in patients with traumatic brain injury (TBI). To date, no study has correlated ONSD on admission CT scan with RCTS. MATERIAL/METHODS: Retrospective cohort study comprised of consecutive patients undergoing CT imaging for traumatic brain injury recruited between January and October 2015. Bilateral ONSD was measured 3 mm behind the eyeball in axial and sagittal planes and mean value was calculated...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28486629/effect-of-caudal-block-using-different-volumes-of-local-anaesthetic-on-optic-nerve-sheath-diameter-in-children-a-prospective-randomized-trial
#11
B Lee, B-N Koo, Y S Choi, H K Kil, M-S Kim, J H Lee
Background: Caudal block is commonly administered for postoperative analgesia in children. Although caudal block with 1.5 ml kg -1 local anaesthetic has been reported to reduce cerebral oxygenation in infants, the effect of caudal block on intracranial pressure (ICP) in children has not been well investigated. Optic nerve sheath diameter (ONSD) correlates with degree of ICP. This study aimed to estimate the effects of caudal block on ICP according to volume of local anaesthetic using ultrasonographic measurement of ONSD in children...
May 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28473274/alterations-in-optic-nerve-sheath-diameter-according-to-cerebrovascular-disease-sub-groups
#12
Emre Gökcen, İbrahim Caltekin, Atakan Savrun, Hilal Korkmaz, Şeyda Tuba Savrun, Gökhan Yıldırım
BACKGROUND: ONSD (optic nerve sheath diameter) is a method used for indirect measurement of the increased intracranial pressure. In previous studies, the relation between the increased intracranial pressure and ONSD was analyzed in the patients suffering from cerebrovascular diseases (CVD). In our study, the patients suffering from ischemic CVD were categorized into 4 subgroups according to Oxfordshire Community Stroke Project classification (OCSP); the relationship between each group and ONSD, and the influence on each eye were analyzed...
April 30, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28452990/relationship-between-the-optic-nerve-sheath-diameter-and-lumbar-cerebrospinal-fluid-pressure-in-patients-with-normal-tension-glaucoma
#13
A Pircher, M Montali, J Berberat, L Remonda, H E Killer
PurposeTo investigate on the relationship between the optic nerve sheath diameter (ONSD) and the lumbar cerebrospinal fluid pressure (CSF-p) in Caucasian patients with normal tension glaucoma (NTG).Patients and methodsRetrospective analysis of medical records of patients with open-angle glaucoma in the period from 2005 to 2015 from the Ophthalmology Department, Cantonal Hospital Aarau, Switzerland was performed. A total of 38 patients (mean age 68.6±11.3 years, 21 females and 17 males) fulfilled the diagnostic criteria of NTG and underwent computed tomography (CT) of the orbit and lumbar puncture (LP)...
April 28, 2017: Eye
https://www.readbyqxmd.com/read/28431869/the-diagnostic-and-prognostic-value-of-the-optic-nerve-sheath-diameter-on-ct-for-diagnosis-spontaneous-subarachnoid-hemorrhage
#14
Murat Yesilaras, Turgay Yilmaz Kilic, Suveyda Yesilaras, Ozge Duman Atilla, Dilek Öncel, Mahmut Çamlar
INTRODUCTION: The aim of this study was to investigate the relationship between the optic nerve sheath diameter (ONSD) measured on non-contrast head computed tomography (CT) and the diagnosis and prognosis of spontaneous subarachnoid hemorrhage (SAH) on emergency department (ED) patients. METHOD: We used a matched control group of patients with the same age and gender who were diagnosed in the ED with spontaneous SAH and who admitted to the ED with headache. Four emergency medicine attending physicians made the ONSD measurements...
April 14, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28421189/optic-nerve-sheath-diameter-ultrasound-evaluation-in-intensive-care-unit-possible-role-and-clinical-aspects-in-neurological-critical-patients-daily-monitoring
#15
M Toscano, G Spadetta, P Pulitano, M Rocco, V Di Piero, O Mecarelli, E Vicenzini
Background. The increase of the optic nerve sheath diameter (ONSD) is a reliable, noninvasive sonographic marker of intracranial hypertension. Aim of the study was to demonstrate the efficacy of ONSD evaluation, when monitoring neurocritical patients, to early identify malignant intracranial hypertension in patients with brain death (BD). Methods. Data from ultrasound ONSD evaluation have been retrospectively analyzed in 21 sedated critical patients with neurological diseases who, during their clinical course, developed BD...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28370143/inter-rater-reliability-of-sonographic-optic-nerve-sheath-diameter-measurements-by-emergency-medicine-physicians
#16
Stephanie Oberfoell, David Murphy, Andrew French, Stacy Trent, David Richards
OBJECTIVES: To compare the degree of agreement of sonographic optic nerve sheath diameter (ONSD) measurements by ultrasound fellowship-trained and resident emergency medicine (EM) physicians. METHODS: Ten ultrasound fellowship-trained EM attending physicians from multiple institutions and 51 resident EM physicians at a single residency were enrolled to measure the ONSD using a computerized ruler on five separate still-frame sonograms of adult eyes that included the retrobulbar optic nerve...
April 3, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in 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
#17
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/28169341/noninvasive-and-quantitative-intracranial-pressure-estimation-using-ultrasonographic-measurement-of-optic-nerve-sheath-diameter
#18
Li-Juan Wang, Yan Yao, Liang-Shu Feng, Yu-Zhi Wang, Nan-Nan Zheng, Jia-Chun Feng, Ying-Qi Xing
We aimed to quantitatively assess intracranial pressure (ICP) using optic nerve sheath diameter (ONSD) measurements. We recruited 316 neurology patients in whom ultrasonographic ONSD was measured before lumbar puncture. They were randomly divided into a modeling and a test group at a ratio of 7:3. In the modeling group, we conducted univariate and multivariate analyses to assess associations between ICP and ONSD, age, sex, BMI, mean arterial blood pressure, diastolic blood pressure. We derived the mathematical function "Xing &Wang" from the modelling group to predict ICP and evaluated the function in the test group...
February 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28156180/diagnosis-of-optic-nerve-sheath-meningioma-during-optic-nerve-sheath-decompression
#19
Austin R Meeker, Melissa W Ko, Bryant P Carruth, Kenneth B Strumpf, Thomas A Bersani
Optic nerve sheath meningioma (ONSM) is typically diagnosed based on clinical suspicion and imaging characteristics and is most often treated with radiation. Historically, biopsy, optic nerve sheath decompression, and debulking surgeries have been avoided for fear of optic nerve vascular disruption and tumor spread into the orbit. This is a case of a 48-year-old man who presented with unilateral optic disc edema, declining visual acuity, and a visual field defect. Despite an initial improvement with acetazolamide, his vision subsequently worsened...
February 2017: Orbit
https://www.readbyqxmd.com/read/28118848/the-association-of-findings-on-brain-computed-tomography-with-neurologic-outcomes-following-extracorporeal-cardiopulmonary-resuscitation
#20
Jeong-Am Ryu, Chi Ryang Chung, Yang Hyun Cho, Kiick Sung, Gee Young Suh, Taek Kyu Park, Young Bin Song, Joo-Yong Hahn, Jin-Ho Choi, Hyeon-Cheol Gwon, Seung-Hyuk Choi, Jeong Hoon Yang
BACKGROUND: Limited data are available on imaging predictors of neurological outcomes after extracorporeal cardiopulmonary resuscitation (ECPR). We investigated the association of initial brain computed tomography (CT) findings with neurological outcomes following ECPR. METHODS: Between February 2005 and December 2015, a total of 42 patients who underwent brain CT scans within 48 h after ECPR were analyzed. Loss of the boundary between gray matter and white matter (LOB) or cortical sulcal effacement (SE), gray-to-white matter ratio (GWR), and optic nerve sheath diameter (ONSD) were measured on initial brain CT...
January 25, 2017: Critical Care: the Official Journal of the Critical Care Forum
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