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Idiopathic normal pressure hydrocephalus

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https://www.readbyqxmd.com/read/28293475/nationwide-hospital-based-survey-of-idiopathic-normal-pressure-hydrocephalus-in-japan-epidemiological-and-clinical-characteristics
#1
Nagato Kuriyama, Masakazu Miyajima, Madoka Nakajima, Michiko Kurosawa, Wakaba Fukushima, Yoshiyuki Watanabe, Etsuko Ozaki, Yoshio Hirota, Akiko Tamakoshi, Etsuro Mori, Takeo Kato, Takahiko Tokuda, Akinori Urae, Hajime Arai
OBJECTIVES: There have been no nationwide epidemiological studies of idiopathic normal pressure hydrocephalus (iNPH) in Japan. Therefore, a nationwide epidemiologic survey of iNPH was performed to determine the number of cases and clinical characteristics by sex and diagnostic level. METHODS: The first survey examined the numbers of cases that met the diagnostic criteria of iNPH and those who underwent shunt operations in 2012. The second survey gathered patients' details to clarify their clinical background characteristics...
March 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28259041/trunk-sway-in-idiopathic-normal-pressure-hydrocephalus-quantitative-assessment-in-clinical-practice
#2
Tomas Bäcklund, Jennifer Frankel, Hanna Israelsson, Jan Malm, Nina Sundström
BACKGROUND: In diagnosis and treatment of patients with idiopathic normal pressure hydrocephalus (iNPH), there is need for clinically applicable, quantitative assessment of balance and gait. Using a body-worn gyroscopic system, the aim of this study was to assess postural stability of iNPH patients in standing, walking and during sensory deprivation before and after cerebrospinal fluid (CSF) drainage and surgery. A comparison was performed between healthy elderly (HE) and patients with various types of hydrocephalus (ventriculomegaly (VM))...
February 24, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28257339/symri-of-the-brain-rapid-quantification-of-relaxation-rates-and-proton-density-with-synthetic-mri-automatic-brain-segmentation-and-myelin-measurement
#3
Akifumi Hagiwara, Marcel Warntjes, Masaaki Hori, Christina Andica, Misaki Nakazawa, Kanako Kunishima Kumamaru, Osamu Abe, Shigeki Aoki
Conventional magnetic resonance images are usually evaluated using the image signal contrast between tissues and not based on their absolute signal intensities. Quantification of tissue parameters, such as relaxation rates and proton density, would provide an absolute scale; however, these methods have mainly been performed in a research setting. The development of rapid quantification, with scan times in the order of 6 minutes for full head coverage, has provided the prerequisites for clinical use. The aim of this review article was to introduce a specific quantification method and synthesis of contrast-weighted images based on the acquired absolute values, and to present automatic segmentation of brain tissues and measurement of myelin based on the quantitative values, along with application of these techniques to various brain diseases...
March 3, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28251346/cost-effectiveness-analysis-of-shunt-surgery-for-idiopathic-normal-pressure-hydrocephalus-based-on-the-sinphoni-and-sinphoni-2-trials
#4
Masahiro Kameda, Shigeki Yamada, Masamichi Atsuchi, Teruo Kimura, Hiroaki Kazui, Masakazu Miyajima, Etsuro Mori, Masatsune Ishikawa, Isao Date
BACKGROUND: We showed that ventriculoperitoneal (VP) shunt and lumboperitoneal (LP) shunt surgeries are beneficial for patients with idiopathic normal pressure hydrocephalus (iNPH) in the Study of Idiopathic Normal Pressure Hydrocephalus on Neurological Improvement (SINPHONI; a multicenter prospective cohort study) and in SINPHONI-2 (a multicenter randomized trial). Although therapeutic efficacy is important, cost-effectiveness analysis is equally valuable. METHODS: Using both a set of assumptions and using the data from SINPHONI and SINPHONI-2, we estimated the total cost of treatment for iNPH, which consists of medical expenses (e...
March 1, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28247411/reversed-aqueductal-cerebrospinal-fluid-net-flow-in-idiopathic-normal-pressure-hydrocephalus
#5
L K Yin, J J Zheng, L Zhao, X Z Hao, X X Zhang, J Q Tian, K Zheng, Y M Yang
OBJECTIVES: The changes of CSF flow dynamics in idiopathic normal pressure hydrocephalus (iNPH) are not fully elucidated. Most previous studies took the whole cardiac cycle as a unit. In this work, it is divided into systole and diastole phase and compared between iNPH patients and normal elderly and paid special attention to the change of netflow direction. MATERIALS AND METHODS: Twenty iNPH patients according to international guideline and twenty healthy volunteers were included in this study and examined by MRI...
March 1, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/28238737/mortality-and-risk-of-dementia-in-normal-pressure-hydrocephalus-a%C3%A2-population-study
#6
Daniel Jaraj, Carsten Wikkelsø, Katrin Rabiei, Thomas Marlow, Christer Jensen, Svante Östling, Ingmar Skoog
INTRODUCTION: We examined mortality, dementia, and progression of hydrocephalic symptoms among untreated individuals with idiopathic normal-pressure hydrocephalus (iNPH) in a population-based sample. METHODS: A total of 1235 persons were examined between 1986 and 2012. Shunted individuals were excluded. We examined 53 persons with hydrocephalic ventricular enlargement (probable iNPH: n = 24, asymptomatic or possible iNPH: n = 29). Comparisons were made with individuals without hydrocephalic ventricular enlargement...
February 24, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/28185313/improvement-in-lower-urinary-tract-symptoms-across-multiple-domains-following-ventriculoperitoneal-shunting-for-idiopathic-normal-pressure-hydrocephalus
#7
Sarah C Krzastek, Samuel P Robinson, Harold F Young, Adam P Klausner
AIMS: The purpose of this study was to evaluate the change in lower urinary tract symptoms following ventriculoperitoneal shunting in patients with idiopathic normal pressure hydrocephalus (iNPH). METHODS: Lower urinary tract symptoms in patients with new-onset iNPH were prospectively evaluated using validated questionnaires from the International Consultation on Incontinence to assess overactive bladder (ICIq-OAB), incontinence (ICIq-UI), and quality of life (ICIq-LUTqol), as well as the American Urological Association Symptom Score bother scale, prior to and following ventriculoperitoneal shunting for iNPH...
February 10, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28156249/utility-of-mri-based-disproportionately-enlarged-subarachnoid-space-hydrocephalus-scoring-for-predicting-prognosis-after-surgery-for-idiopathic-normal-pressure-hydrocephalus-clinical-research
#8
Narihide Shinoda, Osamu Hirai, Shinya Hori, Kazuyuki Mikami, Toshiaki Bando, Daisuke Shimo, Takahiro Kuroyama, Yoji Kuramoto, Masato Matsumoto, Yasushi Ueno
OBJECTIVE The presence of disproportionately enlarged subarachnoid space hydrocephalus (DESH) on brain imaging is a recognized finding of idiopathic normal pressure hydrocephalus (iNPH), but the features of DESH can vary across patients. The aim of this study was to evaluate the utility of MRI-based DESH scoring for predicting prognosis after surgery. METHODS In this single-center, retrospective cohort study, the DESH score was determined by consensus between a group of neurosurgeons, neurologists, and a neuroradiologist based on the preoperative MRI findings of the patients with suspected iNPH...
February 3, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28132644/a-change-in-brain-white-matter-after-shunt-surgery-in-idiopathic-normal-pressure-hydrocephalus-a-tract-based-spatial-statistics-study
#9
Shigenori Kanno, Makoto Saito, Tomohito Kashinoura, Yoshiyuki Nishio, Osamu Iizuka, Hirokazu Kikuchi, Masahito Takagi, Masaki Iwasaki, Shoki Takahashi, Etsuro Mori
BACKGROUND: The aim of this study was to elucidate changes in cerebral white matter after shunt surgery in idiopathic normal pressure hydrocephalus (INPH) using diffusion tensor imaging (DTI). METHODS: Twenty-eight consecutive INPH patients whose symptoms were followed for 1 year after shunt placement and 10 healthy control (HC) subjects were enrolled. Twenty of the initial 28 INPH patients were shunt-responsive (SR) and the other 8 patients were non-responsive (SNR)...
January 30, 2017: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/28120085/neuropsychological-assessment-in-the-differential-diagnosis-of-idiopathic-normal-pressure-hydrocephalus-an-important-tool-for-the-maintenance-and-restoration-of-neuronal-and-neuropsychological-functions
#10
Carmela Sindorio, Rosaria Viola Abbritti, Giovanni Raffa, Stefano M Priola, Antonino Germanò, Massimiliano Visocchi, Maria C Quattropani
Idiopathic normal pressure hydrocephalus (iNPH) is a progressive clinical syndrome that includes gait disturbances, urinary incontinence, and cognitive impairment. iNPH shows similarities to other neurodegenerative disorders, primarily Alzheimer's Disease (AD). Definition of the neuropsychological profile of iNPH and the qualitative analysis of systematic mistakes made in cognitive tests could represent a valid method for systematizing possible specific markers of iNPH dementia and differentiating it from other dementias...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28089835/supplementary-tests-in-idiopathic-normal-pressure-hydrocephalus-a-single-center-experience-with-a-combined-lumbar-infusion-test-and-tap-test
#11
F Raneri, M A S Zella, A Di Cristofori, B Zarrino, M Pluderi, D Spagnoli
INTRODUCTION: Lumbar infusion test (LIT) and Tap Test (TT) have previously been described for the diagnosis and the selection of appropriate surgical candidates in idiopathic normal pressure hydrocephalus (iNPH) MATERIALS AND METHODS: We retrospectively reviewed 81 consecutive patients with clinical diagnosis of iNPH selected for supplementary testing. Clinical evaluation was scored with the Japanese Grading Scale for Normal Pressure Hydrocephalus (JGSNPH), the Global Deterioration Score (GDS) and the modified Rankin Scale (mRS)...
January 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28063896/clinical-correlation-of-abnormal-findings-on-magnetic-resonance-elastography-in-idiopathic-normal-pressure-hydrocephalus
#12
Avital Perry, Christopher S Graffeo, Nikoo Fattahi, Mona M ElSheikh, Nealey Cray, Arvin Arani, Richard L Ehman, Kevin J Glaser, Armando Manduca, Fredric B Meyer, John Huston
BACKGROUND: Idiopathic normal pressure hydrocephalus (iNPH) is a ventriculomegaly syndrome characterized by dementia, urinary incontinence, and gait disturbance, which is potentially reversible after ventriculoperitoneal shunting (VPS). Magnetic resonance elastography (MRE) is an evolving imaging technology that noninvasively measures tissue viscoelasticity. We studied iNPH patients using MRE prior to shunting, compared them with normal controls, and analyzed associations between MRE findings and clinical features, as a pilot assessment of MRE in iNPH...
March 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28062721/vascular-risk-factors-in-inph-a-prospective-case-control-study-the-inph-crash-study
#13
Hanna Israelsson, Bo Carlberg, Carsten Wikkelsö, Katarina Laurell, Babar Kahlon, Göran Leijon, Anders Eklund, Jan Malm
OBJECTIVE: To assess the complete vascular risk factor (VRF) profile of idiopathic normal pressure hydrocephalus (INPH) using a large sample of representative patients with INPH and population-based controls to determine the extent to which vascular disease influences INPH pathophysiology. METHODS: All patients with INPH who underwent shunting in Sweden in 2008-2010 were compared to age- and sex-matched population-based controls. Inclusion criteria were age 60-85 years and no dementia...
February 7, 2017: Neurology
https://www.readbyqxmd.com/read/28052454/estimated-ventricle-size-using-evans-index-reference-values-from-a-population-based-sample
#14
D Jaraj, K Rabiei, T Marlow, C Jensen, I Skoog, C Wikkelsø
BACKGROUND AND PURPOSE: Evans index is an estimate of ventricular size used in the diagnosis of idiopathic normal-pressure hydrocephalus (iNPH). Values >0.3 are considered pathological and are required by guidelines for the diagnosis of iNPH. However, there are no previous epidemiological studies on Evans index, and normal values in adults are thus not precisely known. We examined a representative sample to obtain reference values and descriptive data on Evans index. METHODS: A population-based sample (n = 1235) of men and women aged ≥70 years was examined...
January 4, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/27981690/measuring-changes-in-the-optic-nerve-sheath-diameter-in-patients-with-idiopathic-normal-pressure-hydrocephalus-a-useful-diagnostic-supplement-to-spinal-tap-tests
#15
M Ertl, R Aigner, M Krost, Z Karnasová, K Müller, M Naumann, F Schlachetzki
BACKGROUND AND PURPOSE: Cerebrospinal fluid (CSF) removal improves clinical symptoms of many patients with idiopathic normal-pressure hydrocephalus (iNPH). The aim of this study was to investigate the correlation of changes in the optic nerve sheath diameter (ONSD) with patient responses to CSF removal. METHODS: Transorbital ultrasonography was performed to obtain ONSD measurements in 31 patients with iNPH before and after lumbar puncture. Measurements were obtained while patients were supine and upright...
March 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/27965058/apathy-and-higher-level-of-gait-control-in-normal-pressure-hydrocephalus
#16
Gilles Allali, Magali Laidet, Stéphane Armand, Arnaud Saj, Paul Krack, Frédéric Assal
Apathy represents the most common behavioral disturbance in patients with suspicion of idiopathic normal pressure hydrocephalus (iNPH) and has a major impact on quality of life. However, its impact on gait -the hallmark motor disturbance of iNPH - has never been studied yet. This study aims to evaluate the impact of apathy on higher level of gait control in patients with suspicion of iNPH. Stride time variability (STV), a marker of higher level of gait control, was quantified during usual walking (single task) and during walking while performing simultaneously cognitive tasks (dual task) of counting and verbal fluency...
December 11, 2016: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/27941913/choroidal-fissure-acts-as-an-overflow-device-in-cerebrospinal-fluid-drainage-morphological-comparison-between-idiopathic-and-secondary-normal-pressure-hydrocephalus
#17
Shigeki Yamada, Masatsune Ishikawa, Yasushi Iwamuro, Kazuo Yamamoto
To clarify the pathogenesis of two different types of adult-onset normal-pressure hydrocephalus (NPH), we investigated cerebrospinal fluid distribution on the high-field three-dimensional MRI. The subarachnoid spaces in secondary NPH were smaller than those in the controls, whereas those in idiopathic NPH were of similar size to the controls. In idiopathic NPH, however, the basal cistern and Sylvian fissure were enlarged in concurrence with ventricular enlargement towards the z-direction, but the convexity subarachnoid space was severely diminished...
December 12, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27916758/-hydrocephalus-mimicking-idiopathic-normal-pressure-hydrocephalus-as-the-first-manifestation-of-neurosarcoidosis
#18
REVIEW
Atsuhiko Sugiyama, Makoto Kobayashi, Kumiko Agatsuma, Takeshi Bo, Toshiaki Shiojiri, Hidetoshi Mochida, Yoshio Suzuki, Takashi Matsunaga, Satoshi Kuwabara
A 61-year-old woman presented with a 10-month history of gait disturbance and a 7-month history of urinary incontinence. The Hasegawa dementia scale-revised score indicated cognitive impairment. Brain magnetic resonance imaging (MRI) indicated hydrocephalus with disproportionately enlarged subarachnoid space. This is usually considered a characteristic finding in idiopathic normal pressure hydrocephalus (iNPH). Ventriculo-peritoneal shunting improved the patient's symptoms. Neurosarcoidosis was suspected as a cause of the hydrocephalus because of the abnormalities in the cerebrospinal fluid and the abnormal enhancement of the cauda equina, the leptomeninges of the brainstem, and the spinal cord, as seen on MRI with gadolinium enhancement...
December 2016: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/27911315/decreased-expression-of-hsa-mir-4274-in%C3%A2-cerebrospinal-fluid-of-normal-pressure-hydrocephalus-mimics-with-parkinsonian-syndromes
#19
Ivana Jurjević, Masakazu Miyajima, Ikuko Ogino, Chihiro Akiba, Madoka Nakajima, Akihide Kondo, Mika Kikkawa, Mitsuyasu Kanai, Nobutaka Hattori, Hajime Arai
BACKGROUND: Patients presenting with the classical idiopathic normal pressure hydrocephalus (iNPH) triad often show additional parkinsonian spectrum signs. Accurate differential diagnosis strongly influences the long-term outcome of cerebrospinal fluid (CSF) shunting. OBJECTIVE: The aim of this study was to find potential CSF microRNA (miRNA) biomarkers for NPH mimics with parkinsonian syndromes that can reliably distinguish them from iNPH patients. METHODS: Two cohorts of 81 patients (cohort 1, n = 55; cohort 2, n = 26) with possible iNPH who were treated in two centers between January 2011 and May 2014 were studied...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27878614/associations-of-intracranial-pressure-with-brain-biopsy-radiological-findings-and-shunt-surgery-outcome-in-patients-with-suspected-idiopathic-normal-pressure-hydrocephalus
#20
Maria Kojoukhova, Krista-Irina Vanha, Matti Timonen, Anne M Koivisto, Ossi Nerg, Jaana Rummukainen, Tuomas Rauramaa, Ritva Vanninen, Juha E Jääskeläinen, Anna Sutela, Ville Leinonen
BACKGROUND: It remains unclear how intracranial pressure (ICP) measures are associated with brain biopsies and radiological markers. Here, we aim to investigate associations between ICP and radiological findings, brain biopsies, and shunt surgery outcome in patients with suspected idiopathic normal pressure hydrocephalus (iNPH). METHOD: In this study, we retrospectively analyzed data from 73 patients admitted with suspected iNPH to Kuopio University Hospital. Of these patients, 71% underwent shunt surgery...
January 2017: Acta Neurochirurgica
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