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https://www.readbyqxmd.com/read/28800199/intracranial-elastance-is-increased-in-idiopathic-intracranial-hypertension
#1
Jason T Chisholm, Padmaja Sudhakar, Abdulnasser N Alhajeri, Jonathan H Smith
BACKGROUND: To date, no pathophysiologic model has sufficiently accounted for all the findings encountered in patients with idiopathic intracranial hypertension (IIH). Intracranial elastance is an index of volume-buffering capacity known to play a role in certain disorders of CSF dynamics, which has not been previously investigated in relation to IIH patients. METHODS: Single-center retrospective cohort study from July 1, 2011 to July 1, 2016. We collected values for opening pressure (PO ), closing pressure (PC ), volume (V) of CSF removed, as well as demographic and clinical covariates...
August 11, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28799016/intraparenchymal-intracranial-pressure-monitoring-for-hydrocephalus-and-cerebrospinal-fluid-disorders
#2
Aswin Chari, Debayan Dasgupta, Alexander Smedley, Claudia Craven, Edward Dyson, Samir Matloob, Simon Thompson, Lewis Thorne, Ahmed K Toma, Laurence Watkins
BACKGROUND: Elective intraparenchymal intracranial pressure (ICP) monitoring is useful for the diagnosis and treatment of hydrocephalus and cerebrospinal fluid (CSF) disorders. This retrospective study analyzes median ICP and pulse amplitude (PA) recordings in neurosurgically naïve patients undergoing elective ICP monitoring for suspected CSF disorders. METHODS: Retrospective review of prospectively collated database of neurosurgically naïve patients undergoing elective ICP monitoring for suspected hydrocephalus and CSF disorders...
August 10, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28768582/blind-overnight-a-case-of-fulminant-idiopathic-intracranial-hypertension
#3
Janpreet Singh Bhandohal, Taimur Mirza
Idiopathic Intracranial Hypertension (IIH) is a syndrome seen predominantly in obese women of reproductive age group, characterized by signs and symptoms of increased intracranial pressure due to an unknown cause. Some individuals have a more malignant form of disease called fulminant idiopathic intracranial hypertension with rapid worsening of symptoms over days. We report a case of 33year-old obese female (BMI 36.9) who presented with a severe headache and blurred vision for one week, found to have idiopathic intracranial hypertension with rapid worsening of symptoms suggestive of a fulminant course of disease...
July 5, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28758206/the-idiopathic-intracranial-hypertension-treatment-trial-a-review-of-the-outcomes
#4
Stacy V Smith, Deborah I Friedman
OBJECTIVE: The Idiopathic Intracranial Hypertension Treatment Trial (IIHTT) was the first large, randomized study on the use of acetazolamide and weight loss for treatment of idiopathic intracranial hypertension-associated vision loss. The multicenter trial also examined a number of secondary outcomes. This review summarizes all available results of the study published in the literature since 2014. BACKGROUND: Prior to the IIHTT, clinicians managed idiopathic intracranial hypertension based on data from small, unmasked trials, expert opinion, and clinical experience...
July 30, 2017: Headache
https://www.readbyqxmd.com/read/28752894/headache-in-idiopathic-intracranial-hypertension-findings-from-the-idiopathic-intracranial-hypertension-treatment-trial
#5
Deborah I Friedman, Peter A Quiros, Prem S Subramanian, Luis J Mejico, Shan Gao, Michael McDermott, Michael Wall
OBJECTIVE: To characterize the phenotype, headache-related disability, medical co-morbidities, use of symptomatic headache medications, and headache response to study interventions in the Idiopathic Intracranial Hypertension Treatment Trial (IIHTT). METHODS: Patients with untreated IIH and mild vision loss enrolled in the IIHTT and randomized to acetazolamide (ACZ) and weight loss or placebo (PLB) and weight loss had prospective assessment of headache disability using the Headache Impact Test-6 (HIT-6) questionnaire...
July 28, 2017: Headache
https://www.readbyqxmd.com/read/28751968/lumboperitoneal-shunt-insertion-without-fluoroscopy-guidance-accuracy-of-placement-in-a-series-of-107-procedures
#6
Sabah Al-Rashed, Haider Kareem, Neeraj Kalra, Linda D'Antona, Mouness Obeidat, Bhavesh Patel, Ahmed Toma
Background: Lumboperitoneal (LP) shunts were the mainstay of cerebrospinal fluid diversion therapy for idiopathic intracranial hypertension (IIH). The traditionally cited advantage of LP shunts over ventriculoperitoneal (VP) shunts is the ease of insertion in IIH. This needs to be placed at the level of L3/4 to be below the level of the spinal cord. The objective of this study was to analyse the position of LP shunts inserted without portable fluoroscopy guidance.  Methods: A retrospective analysis of radiology was performed for patients who underwent lumboperitoneal shunts between 2006 and 2016 at the National Hospital for Neurology and Neurosurgery...
2017: F1000Research
https://www.readbyqxmd.com/read/28742639/idiopathic-intracranial-hypertension-progressing-to-venous-sinus-thrombosis-subarachnoid-hemorrhage-and-stroke
#7
Joshua S Hardin, Raghu H Ramakrishnaiah, John D Pemberton, Paul H Phillips, Joseph G Chacko
Idiopathic intracranial hypertension (IIH) is a syndrome characterized by increased intracranial pressure (ICP), the absence of structural lesions on neuroimaging, and normal cerebrospinal fluid composition. Cerebral venous sinus thrombosis (CVST) is a common cause of increased ICP and can be differentiated from IIH with magnetic resonance venography. We describe a young woman with typical IIH who underwent lumbar puncture and was treated with a short course of high-dose corticosteroids followed by acetazolamide...
July 24, 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28735654/chronic-fatigue-syndrome-and-idiopathic-intracranial-hypertension-different-manifestations-of-the-same-disorder-of-intracranial-pressure
#8
J Nicholas P Higgins, John D Pickard, Andrew M L Lever
Though not discussed in the medical literature or considered in clinical practice, there are similarities between chronic fatigue syndrome and idiopathic intracranial hypertension (IIH) which ought to encourage exploration of a link between them. The cardinal symptoms of each - fatigue and headache - are common in the other and their multiple other symptoms are frequently seen in both. The single discriminating factor is raised intracranial pressure, evidenced in IIH usually by the sign of papilloedema, regarded as responsible for the visual symptoms which can lead to blindness...
August 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28733756/glial-and-neuronal-antibodies-in-patients-with-idiopathic-intracranial-hypertension
#9
Güneş Altıokka-Uzun, Ece Erdağ, Betül Baykan, John Tzartos, Duygu Gezen-Ak, Bedia Samancı, Erdinç Dursun, Paraskevi Zisimopoulou, Katerina Karagiorgou, Christos Stergiou, Erdi Şahin, Esme Ekizoğlu, Murat Kürtüncü, Erdem Tüzün
Headache and visual disturbances are the main presenting symptoms of idiopathic intracranial hypertension (IIH) characterized by increased intracranial pressure (ICP) with an unknown cause. We aimed to investigate the antibodies against optic neuritis-associated glial antigens, aquaporin-4 (AQP4) and myelin oligodendrocyte glycoprotein (MOG) and uncharacterized neuronal membrane antigens in IIH patients. Consecutive patients diagnosed according to Friedman revised diagnostic criteria and control subjects were included after their consent...
July 21, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28716667/pupillometric-evaluation-of-the-melanopsin-containing-retinal-ganglion-cells-in-mitochondrial-and-non-mitochondrial-optic-neuropathies
#10
Shakoor Ba-Ali, Henrik Lund-Andersen
In recent years, chromatic pupillometry is used in humans to evaluate the activity of melanopsin expressing intrinsic photosensitive retinal ganglion cells (ipRGCs). Blue light is used to stimulate the ipRGCs and red light activates the rod/cone photoreceptors. The late re-dilation phase of pupillary light reflex is primarily driven by the ipRGCs. Optic neuropathies i.e. Leber hereditary optic neuropathy (LHON), autosomal dominant optic atrophy (ADOA), nonarteritic anterior ischemic optic neuropathy (NAION), glaucoma, optic neuritis and idiopathic intracranial hypertension (IIH) are among the diseases, which have been subject to pupillometric studies...
July 14, 2017: Mitochondrion
https://www.readbyqxmd.com/read/28679427/comparison-of-the-sagittal-sinus-cross-sectional-area-between-patients-with-multiple-sclerosis-hydrocephalus-intracranial-hypertension-and-spontaneous-intracranial-hypotension-a-surrogate-marker-of-venous-transmural-pressure
#11
Grant A Bateman, Jeannette Lechner-Scott, Ross Copping, Christopher Moeskops, Swee Leong Yap
There is evidence that patients with multiple sclerosis (MS) and hydrocephalus share some common pathophysiological mechanisms. Alterations in CSF pressure are known to affect cerebral venous sinus geometry. To further explore these mechanisms, we measured the superior sagittal sinus (SSS) cross-sectional area 3 cm above the torcular using T2 images in 20 MS, 10 spontaneous intracranial hypotension (SIH), 21 hydrocephalus and 20 idiopathic intracranial hypertension (IIH) patients and compared with 20 matched controls...
July 6, 2017: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/28678218/idiopathic-intracranial-hypertension-in-males
#12
Hissah K Al Abdulsalam, Abdulrazag M Ajlan
Idiopathic intracranial hypertension (IIH) is a neurological condition characterized by increased intracranial pressure without an underlying intracranial pathology. This condition is rarely encountered in men and it predominantly affects obese women of childbearing age. We present an interesting case of IIH in a male patient who presented with acute severe vision loss over 2 weeks and was successfully treated via surgery. Although IIH is less common in men than in women, men are more likely to develop vision loss, which is usually severe and less likely to respond to medical treatment...
July 2017: Neurosciences: the Official Journal of the Pan Arab Union of Neurological Sciences
https://www.readbyqxmd.com/read/28670671/testicular-ischemia-caused-by-incarcerated-inguinal-hernia-in-infants-incidence-conservative-treatment-procedure-and-follow-up
#13
Mustafa Yasar Ozdamar, Osman Zeki Karakus
PURPOSE: Testicular ischemia and necrosis, especially in the infant age, may result from incarcerated inguinal hernia. Duration of ischemia is a significant factor for the affected testicle. We aimed to present a case series on the conservative management in the testicular ischemia caused by incarcerated inguinal hernia. MATERIALS AND METHODS: Inguinal hernia repairs performed in between March 2009 and December 2014 were investigated retrospectively. Patients' characteristics, hernia side, incarceration, testicular ischemia and complications were recorded...
July 2, 2017: Urology Journal
https://www.readbyqxmd.com/read/28637822/pattern-of-pressure-gradient-alterations-after-venous-sinus-stenting-for-idiopathic-intracranial-hypertension-predicts-stent-adjacent-stenosis-a-proposed-classification-system
#14
Daniel Raper, Thomas J Buell, Dale Ding, Ching-Jen Chen, Robert M Starke, Kenneth C Liu
OBJECTIVE: Venous sinus stenting (VSS) is a safe and effective treatment for idiopathic intracranial hypertension (IIH) with angiographic venous sinus stenosis. However, predictors of stent-adjacent stenosis (SAS) remain poorly defined. METHODS: We performed a retrospective review of 47 patients with IIH and intracranial venous stenosis who underwent VSS with pre- and post-stent venography. Patient characteristics, treatments and outcomes were reviewed. Changes in pressure gradient after VSS were classified according to pattern of gradient resolution into types I-III...
June 21, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28619360/further-delineation-of-cog8-cdg-a-case-with-novel-compound-heterozygous-mutations-diagnosed-by-targeted-exome-sequencing
#15
Aram Yang, Sung Yoon Cho, Ja-Hyun Jang, Jinsup Kim, Sook Za Kim, Beom Hee Lee, Han-Wook Yoo, Dong-Kyu Jin
Congenital disorders of glycosylation (CDG) are a rapidly expanding group of inherited metabolic disorders with highly variable clinical presentations caused by deficient glycosylation of proteins and/or lipids. CDG-IIh is a very rare subgroup of CDG caused by mutations in the conserved oligomeric Golgi (COG) complex gene, COG8, and so far, only two cases have been reported in the medical literature. Here, we describe an 8-year-old Korean boy with psychomotor retardation, hypotonia, failure to thrive, elevated serum liver enzymes, microcephaly, and talipes equinovarus...
June 13, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28592488/dna-damage-induced-atm-and-rad-3-related-atr-kinase-activation-in-non-replicating-cells-is-regulated-by-the-xpb-subunit-of-transcription-factor-iih-tfiih
#16
Michael G Kemp
The role of the DNA damage response protein kinase ataxia telangiectasia-mutated (ATM)- and Rad-3-related (ATR) in the cellular response to DNA damage during the replicative phase of the cell cycle has been extensively studied. However, little is known about ATR kinase function in cells that are not actively replicating DNA and that constitute most cells in the human body. Using small-molecule inhibitors of ATR kinase and overexpression of a kinase-inactive form of the enzyme, I show here that ATR promotes cell death in non-replicating/non-cycling cultured human cells exposed to N-acetoxy-2-acetylaminofluorene (NA-AAF), which generates bulky DNA adducts that block RNA polymerase movement...
July 28, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28584914/optical-coherence-tomography-for-the-diagnosis-and-monitoring-of-idiopathic-intracranial-hypertension
#17
Philipp Albrecht, Christine Blasberg, Marius Ringelstein, Ann-Kristin Müller, David Finis, Rainer Guthoff, Ella-Maria Kadas, Wolf Lagreze, Orhan Aktas, Hans-Peter Hartung, Friedemann Paul, Alexander U Brandt, Axel Methner
The objectives of the study were to investigate the value of optical coherence tomography in detecting papilledema in patients with idiopathic intracranial hypertension (IIH), a disease which is difficult to monitor and which can lead to permanent visual deficits; to analyze retinal changes over time. In this non-interventional case-control study, spectral-domain optical coherence tomography (SD-OCT) was used to analyze the retinal and optic nerve head (ONH) morphology of 21 patients with IIH and 27 age- and sex-matched healthy controls over time...
July 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28560487/effect-of-venous-stenting-on-intracranial-pressure-in-idiopathic-intracranial-hypertension
#18
Samir A Matloob, Ahmed K Toma, Simon D Thompson, Chee L Gan, Fergus Robertson, Lewis Thorne, Laurence D Watkins
BACKGROUND: Idiopathic intracranial hypertension (IIH) is characterised by an increased intracranial pressure (ICP) in the absence of any central nervous system disease or structural abnormality and by normal CSF composition. Management becomes complicated once surgical intervention is required. Venous sinus stenosis has been suggested as a possible aetiology for IIH. Venous sinus stenting has emerged as a possible interventional option. Evidence for venous sinus stenting is based on elimination of the venous pressure gradient and clinical response...
May 31, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28536838/outcomes-of-ventriculoperitoneal-shunt-insertion-in-the-management-of-idiopathic-intracranial-hypertension-in-children
#19
J Heyman, Ronak Ved, A Amato-Watkins, I Bhatti, J Te Water Naude, F Gibbon, P Leach
PURPOSE: The ventriculoperitoneal (VP) shunt has become the procedure of choice for treatment of idiopathic intracranial hypertension (IIH). We aimed to assess the efficacy of frameless stereotactic placement of VP shunts for the management of medically resistant IIH in children and to assess the role of gender and obesity in the aetiology of the condition. METHODS: This is a retrospective analysis of the case notes of 10 patients treated surgically at the University Hospital of Wales in Cardiff, from May 2006 to September 2012...
August 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28534259/the-efficacy-of-orbital-ultrasonography-and-magnetic-resonance-imaging-findings-with-direct-measurement-of-intracranial-pressure-in-distinguishing-papilledema-from-pseudopapilledema
#20
Zeynep Ozturk, Tuba Atalay, Ebru Arhan, Kursad Aydin, Ayse Serdaroglu, Tugba Hirfanoglu, Cengiz Havali, Yilmaz Akbas, Duygu Yalinbas
INTRODUCTION: The goal of this study was to evaluate the utility of orbital ultrasonography and magnetic resonance imaging in the diagnosis of idiopathic intracranial hypertension (IIH). METHOD: We reviewed the medical records of patients referred to our department for suspected IIH. RESULTS: Seven children were diagnosed with IIH. Nine children revealed pseudopapilledema by optic coherence tomography and/or orbital ultrasonography. When the axial sequences were reexamined, patients with papilledema had optic nerve sheath (ONS) enlargement (6...
May 22, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
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