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Idiopathic normal pressure hydrocephalus

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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
#1
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
#2
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 ventriculomegaly syndrome characterized by dementia, urinary incontinence, and gait disturbance, which is potentially reversible following ventriculoperitoneal shunting (VPS). Magnetic resonance elastography (MRE) is an evolving imaging technology that noninvasively measures tissue viscoelasticity. OBJECTIVE: We studied iNPH patients using MRE prior to shunting, compared them to normal controls, and analyzed associations between MRE findings and clinical features, as a pilot assessment of MRE in iNPH...
January 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28062721/vascular-risk-factors-in-inph-a-prospective-case-control-study-the-inph-crash-study
#3
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...
January 6, 2017: Neurology
https://www.readbyqxmd.com/read/28052454/estimated-ventricle-size-using-evans-index-reference-values-from-a-population-based-sample
#4
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
#5
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...
December 15, 2016: 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
#6
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
#7
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
#8
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
#9
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...
November 28, 2016: 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
#10
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
https://www.readbyqxmd.com/read/27876063/early-and-delayed-assessments-of-quantitative-gait-measures-to-improve-the-tap-test-as-a-predictor-of-shunt-effectiveness-in-idiopathic-normal-pressure-hydrocephalus
#11
Masatsune Ishikawa, Shigeki Yamada, Kazuo Yamamoto
BACKGROUND: To improve the diagnostic performance of the cerebrospinal fluid (CSF) tap test (TT), early and delayed assessments of gait were performed after the removal of 30 ml of CSF in patients with probable idiopathic normal pressure hydrocephalus. Assessments of gait included the 3-m timed up and go test (TUG), and the 10-m walk in time (10Ti) and in step (10St) tests. METHODS: Quantitative data for the TUG, the 10Ti, and the 10St were obtained before CSF removal and on days 1 and 4 after removal of 30 ml CSF...
November 22, 2016: Fluids and Barriers of the CNS
https://www.readbyqxmd.com/read/27871440/investigation-and-clinical-applications-of-muscle-strength-change-in-cerebrospinal-fluid-tap-test-in-cases-of-idiopathic-normal-pressure-hydrocephalus-a-retrospective-study
#12
Tsuyoshi Matsuoka, Jun-Ichi Iida, Makoto Kawahara, Yoshitomo Uchiyama
The cerebrospinal fluid tap test (CSFTT) is widely used to diagnose idiopathic normal pressure hydrocephalus (iNPH) and predict the therapeutic effectiveness of shunting. However, the ability to walk cannot be quantified for patients who are unable to walk. Therefore, we examined whether the iNPH diagnostic aid is possible using dynamometry, even for patients who are unable to walk. In this study, 45 patients underwent grip strength assessment, quadriceps strength assessment, 10-m walk test, and 3-m Timed Up and Go test before and after CSFTT...
December 15, 2016: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/27861535/a-segmental-copy-number-loss-of-the-sfmbt1-gene-is-a-genetic-risk-for-shunt-responsive-idiopathic-normal-pressure-hydrocephalus-inph-a-case-control-study
#13
Hidenori Sato, Yoshimi Takahashi, Luna Kimihira, Chifumi Iseki, Hajime Kato, Yuya Suzuki, Ryosuke Igari, Hiroyasu Sato, Shingo Koyama, Shigeki Arawaka, Toru Kawanami, Masakazu Miyajima, Naoyuki Samejima, Shinya Sato, Masahiro Kameda, Shinya Yamada, Daisuke Kita, Mitsunobu Kaijima, Isao Date, Yukihiko Sonoda, Takamasa Kayama, Nobumasa Kuwana, Hajime Arai, Takeo Kato
Little is known about genetic risk factors for idiopathic normal pressure hydrocephalus (iNPH). We examined whether a copy number loss in intron 2 of the SFMBT1 gene could be a genetic risk for shunt-responsive, definite iNPH. Quantitative and digital PCR analyses revealed that 26.0% of shunt-responsive definite iNPH patients (n = 50) had such a genetic change, as compared with 4.2% of the healthy elderly (n = 191) (OR = 7.94, 95%CI: 2.82-23.79, p = 1.8 x 10-5) and 6.3% of patients with Parkinson's disease (n = 32) (OR = 5...
2016: PloS One
https://www.readbyqxmd.com/read/27802227/effects-of-alzheimer-s-disease-associated-risk-loci-on-amyloid-%C3%AE-accumulation-in-the-brain-of-idiopathic-normal-pressure-hydrocephalus-patients
#14
Tiina Laiterä, Jussi Paananen, Seppo Helisalmi, Timo Sarajärvi, Joel Huovinen, Marjo Laitinen, Tuomas Rauramaa, Irina Alafuzoff, Anne M Remes, Hilkka Soininen, Annakaisa Haapasalo, Juha E Jääskeläinen, Ville Leinonen, Mikko Hiltunen
BACKGROUND: Idiopathic normal pressure hydrocephalus (iNPH) is a dementing condition featuring characteristic symptoms, ventriculomegaly, and normal or slightly elevated cerebrospinal fluid pressure. In Alzheimer's disease (AD) patients, diffuse aggregates of amyloid-β (Aβ) and neurofibrillary hyperphosphorylated tau are detected in the neocortex of the brain, while similar accumulation of Aβ is also detected in iNPH. Recent genome-wide association studies have identified several novel risk loci for AD, potentially affecting Aβ-related cellular processes...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27790243/the-effect-of-spinal-tap-test-on-different-sensory-modalities-of-postural-stability-in-idiopathic-normal-pressure-hydrocephalus
#15
Katrin Abram, Silvia Bohne, Peter Bublak, Panagiota Karvouniari, Carsten M Klingner, Otto W Witte, Orlando Guntinas-Lichius, Hubertus Axer
BACKGROUND/AIMS: Postural instability in patients with normal pressure hydrocephalus (NPH) is a most crucial symptom leading to falls with secondary complications. The aim of the current study was to evaluate the therapeutic effect of spinal tap on postural stability in these patients. METHODS: Seventeen patients with clinical symptoms of NPH were examined using gait scale, computerized dynamic posturography (CDP), and neuropsychological assessment. Examinations were done before and after spinal tap test...
September 2016: Dementia and Geriatric Cognitive Disorders Extra
https://www.readbyqxmd.com/read/27787666/neurite-orientation-dispersion-and-density-imaging-for-evaluation-of-corticospinal-tract-in-idiopathic-normal-pressure-hydrocephalus
#16
Ryusuke Irie, Kohei Tsuruta, Masaaki Hori, Michimasa Suzuki, Koji Kamagata, Atsushi Nakanishi, Kouhei Kamiya, Madoka Nakajima, Masakazu Miyajima, Hajime Arai, Shigeki Aoki
PURPOSE: To evaluate diffusional changes of the corticospinal tract (CST) in patients with idiopathic normal pressure hydrocephalus (iNPH) by neurite orientation dispersion and density imaging (NODDI). MATERIALS AND METHODS: Nineteen patients with iNPH and 12 healthy controls were included. Diffusion MRI data for NODDI were acquired with a 3-T system, using 32 motion-probing gradient directions with six b-values (from 0 to 2500 s/mm(2)). The orientation dispersion index (ODI), intra-cellular volume fraction (Vic), and isotropic volume fraction (Viso) of the CST were calculated by tract-specific analysis in patients and controls...
October 27, 2016: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/27743250/multimodal-analysis-to-predict-shunt-surgery-outcome-of-284-patients-with-suspected-idiopathic-normal-pressure-hydrocephalus
#17
Antti J Luikku, Anette Hall, Ossi Nerg, Anne M Koivisto, Mikko Hiltunen, Seppo Helisalmi, Sanna-Kaisa Herukka, Anna Sutela, Maria Kojoukhova, Jussi Mattila, Jyrki Lötjönen, Jaana Rummukainen, Irina Alafuzoff, Juha E Jääskeläinen, Anne M Remes, Hilkka Soininen, Ville Leinonen
OBJECTIVES: Optimal selection of idiopathic normal pressure hydrocephalus (iNPH) patients for shunt surgery is challenging. Disease State Index (DSI) is a statistical method that merges multimodal data to assist clinical decision-making. It has previously been shown to be useful in predicting progression in mild cognitive impairment and differentiating Alzheimer's disease (AD) and frontotemporal dementia. In this study, we use the DSI method to predict shunt surgery response for patients with iNPH...
October 14, 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27733932/characterisation-of-the-complexity-of-intracranial-pressure-signals-measured-from-idiopathic-and-secondary-normal-pressure-hydrocephalus-patients
#18
Tricia Adjei, Daniel Abásolo, David Santamarta
Hydrocephalus is a condition characterised by enlarged cerebral ventricles, which in turn affects intracranial pressure (ICP); however, the mechanisms regulating ICP are not fully understood. A nonlinear signal processing approach was applied to ICP signals measured during infusion studies from patients with two forms of hydrocephalus, in a bid to compare the differences. This is the first study of its kind. The two forms of hydrocephalus were idiopathic normal pressure hydrocephalus (iNPH) and secondary normal pressure hydrocephalus (SH)...
September 2016: Healthcare Technology Letters
https://www.readbyqxmd.com/read/27730385/does-aqueductal-stenosis-influence-the-lumbar-infusion-test-in-normal-pressure-hydrocephalus
#19
Emilio Luis González-Martínez, David Santamarta
BACKGROUND: Late-onset idiopathic aqueductal stenosis may present with clinical features indistinct from idiopathic normal-pressure hydrocephalus (NPH). Moreover, aqueductal stenosis (AS) is not always detected by conventional magnetic resonance imaging (MRI). The aim of this study was to compare the hydrodynamic pattern among NPH patients according to the patency of the aqueduct. METHODS: Fifty-six consecutive lumbar infusion tests were performed in patients with NPH syndrome...
October 11, 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27692614/the-predictive-value-of-desh-for-shunt-responsiveness-in-idiopathic-normal-pressure-hydrocephalus
#20
Claudia L Craven, Ahmed K Toma, Tarek Mostafa, Neekhil Patel, Laurence D Watkins
OBJECTIVE: Selecting probable idiopathic normal pressure hydrocephalus (INPH) patients for shunt insertion presents a challenge because of coexisting comorbidities and other conditions that could mimic NPH. The characteristic appearance of DESH (Disproportionately Enlarged Subarachnoid Space Hydrocephalus) on brain imaging has been shown to have a high positive predictive value in identifying shunt responsive INPH patients (SINPHONI trial). However, the negative predictive value of this radiological sign was not clearly demonstrated...
December 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
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