keyword
MENU ▼
Read by QxMD icon Read
search

Normal pressure hydrocephalus

keyword
https://www.readbyqxmd.com/read/29682435/assessment-of-ventriculoperitoneal-shunt-function-using-ultrasound-characterization-of-valve-interface-oscillation-as-a-proxy
#1
April Aralar, Matthew Bird, Robert Graham, Beomseo Koo, Parag Chitnis, Siddhartha Sikdar, Mahesh Shenai
Objective Ventricular shunts are a mainstay of hydrocephalus treatment, but the detection of its clinical failure often relies on circumstantial evidence. A direct, non-interventional method for reliably evaluating cerebrospinal fluid (CSF) function does not exist due to the difficulty of measuring in vivo flow characteristics. The objective of this study is to apply a novel method of ultrasound monitoring to characterize the oscillation observed during pulsatile CSF flow and failure states in an in vitro and cadaveric model...
February 19, 2018: Curēus
https://www.readbyqxmd.com/read/29661694/descriptive-epidemiology-of-parkinsonism-in-the-canton-of-geneva-switzerland
#2
Vanessa Fleury, Pauline Brindel, Nicolas Nicastro, Pierre R Burkhard
OBJECTIVES: A large descriptive cross-sectional population-based prevalence study as well as a retrospective incidence study were undertaken to ascertain the frequency of Parkinson's Disease (PD) and other types of degenerative and non-degenerative parkinsonism in the Canton of Geneva, Switzerland. METHODS: An extensive case-finding approach including records from public hospitals, private neurologists and nursing homes was utilized. All patients with a diagnosis of parkinsonism established between 2003 and 2012 were included...
April 9, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29660591/inverse-relationship-between-the-evans-index-and-cognitive-performance-in-non-disabled-stroke-free-community-dwelling-older-adults-a-population-based-study
#3
Oscar H Del Brutto, Robertino M Mera, Danielle Gladstone, María Sarmiento-Bobadilla, Kristen Cagino, Mauricio Zambrano, Aldo F Costa, Mark J Sedler
OBJECTIVE: The Evans Index (EI) is used for recognition of individuals with normal pressure hydrocephalus. However, recent studies suggest that the EI is not a reliable marker of this condition. Rather, the EI may be inversely correlated with cognitive performance, but information on this correlation is lacking. We aimed to assess the relationship between the EI and cognitive performance in community-dwelling older adults. PATIENTS AND METHODS: The study included 314 non-disabled, stroke-free, individuals aged ≥60 years enrolled in the Atahualpa Project undergoing brain MRI and MoCA testing...
March 30, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29642364/re-characterization-of-lower-urinary-tract-symptoms-in-patients-with-idiopathic-normal-pressure-hydrocephalus
#4
Alan J Wein
No abstract text is available yet for this article.
April 2018: Journal of Urology
https://www.readbyqxmd.com/read/29610690/comorbid-normal-pressure-hydrocephalus-with-parkinsonism-a-clinical-challenge-and-call-for-awareness
#5
A Cucca, M C Biagioni, K Sharma, J Golomb, R M Gilbert, A Di Rocco, J E Fleisher
Idiopathic normal pressure hydrocephalus (iNPH) is the most common cause of hydrocephalus in adults. The diagnosis may be challenging, requiring collaborative efforts between different specialists. According to the International Society for Hydrocephalus and Cerebrospinal Fluid Disorders, iNPH should be considered in the differential of any unexplained gait failure with insidious onset. Recognizing iNPH can be even more difficult in the presence of comorbid neurologic disorders. Among these, idiopathic Parkinson's disease (PD) is one of the major neurologic causes of gait dysfunction in the elderly...
2018: Case Reports in Neurological Medicine
https://www.readbyqxmd.com/read/29581614/effect-of-spinal-tap-test-on-the-performance-of-sit-to-stand-walking-and-turning-in-patients-with-idiopathic-normal-pressure-hydrocephalus
#6
Sunee Bovonsunthonchai, Theerapol Witthiwej, Chanon Ngamsombat, Sith Sathornsumetee, Roongtiwa Vachalathiti, Weerasak Muangpaisan, Pichaya Hengsomboon, Suthasinee Thong-On, Supattra Jankhum, Pusanisa Yangyoo
The aim of the study was to investigate the effect of the spinal tap test on sit-to-stand (STS), walking, and turning and to determine the relationship among the outcome measures of STS, walking, and turning in patients with iNPH. Twenty-seven patients with clinical symptoms of iNPH were objectively examined for STS, walking, and turning by the Force Distribution Measurement (FDM) platform connected with a video camera. Assessments were performed at before and 24 hours after spinal tap. Motor abilities were assessed by the STS time, time of walking over 3 meters, and time and number of steps when turning over 180 degrees...
February 2018: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/29571865/preoperative-biomarkers-in-patients-with-idiopathic-normal-pressure-hydrocephalus-showing-a-favorable-shunt-surgery-outcome
#7
Yun Jeong Hong, Min-Jeong Kim, Eunhye Jeong, Ji-Eun Kim, Jihye Hwang, Jung-Il Lee, Jae-Hong Lee, Duk L Na
INTRODUCTION: Idiopathic normal pressure hydrocephalus (INPH) is known to be a potentially treatable neurologic condition. The neurocognitive outcomes after surgery, however, have been variable. It is important to define preoperative characteristics of patients that predicts the shunting outcome. We aimed to compare baseline differences between shunt-responsive and unresponsive patients after 1year from surgery in order to identify preoperative predictors showing favorable clinical outcomes...
April 15, 2018: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29566389/amyloid-deposits-and-idiopathic-normal-pressure-hydrocephalus-an-18f-florbetaben-study
#8
Kyunghun Kang, Uicheul Yoon, Jinwoo Hong, Shin Young Jeong, Pan-Woo Ko, Sang-Woo Lee, Ho-Won Lee
BACKGROUND: The first aim of our study was to determine whether cortical 18F-florbetaben retention was different between healthy controls and idiopathic normal-pressure hydrocephalus (INPH) patients. Our second aim was to investigate whether there were any relationships between 18F-florbetaben retention and either hippocampal volume or clinical symptoms in INPH patients. METHODS: Seventeen patients diagnosed with INPH and 8 healthy controls underwent studies with magnetic resonance imaging and 18F-florbetaben positron emission tomography imaging...
March 22, 2018: European Neurology
https://www.readbyqxmd.com/read/29549286/non-invasive-estimation-of-the-intracranial-pressure-waveform-from-the-central-arterial-blood-pressure-waveform-in-idiopathic-normal-pressure-hydrocephalus-patients
#9
Karen Brastad Evensen, Michael O'Rourke, Fabrice Prieur, Sverre Holm, Per Kristian Eide
This study explored the hypothesis that the central aortic blood pressure (BP) waveform may be used for non-invasive estimation of the intracranial pressure (ICP) waveform. Simultaneous invasive ICP and radial artery BP waveforms were measured in 29 individuals with idiopathic normal pressure hydrocephalus (iNPH). The central aortic BP waveforms were estimated from the radial artery BP waveforms using the SphygmoCor system. For each individual, a transfer function estimate between the central aortic BP and the invasive ICP waveforms was found (Intra-patient approach)...
March 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29547089/cerebral-autoregulation-cerebrospinal-fluid-outflow-resistance-and-outcome-following-cerebrospinal-fluid-diversion-in-normal-pressure-hydrocephalus
#10
Afroditi Despina Lalou, Marek Czosnyka, Joseph Donnelly, John D Pickard, FMedSci, Eva Nabbanja, Nicole C Keong, Matthew Garnett, Zofia H Czosnyka
OBJECTIVE Normal pressure hydrocephalus is not simply the result of a disturbance in CSF circulation, but often includes cardiovascular comorbidity and abnormalities within the cerebral mantle. In this study, the authors have examined the relationship between the global autoregulation pressure reactivity index (PRx), the profile of disturbed CSF circulation and pressure-volume compensation, and their possible effects on outcome after surgery. METHODS The authors studied a cohort of 131 patients in whom a clinical suspicion of normal pressure hydrocephalus was investigated...
March 16, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29547088/usefulness-of-the-convexity-apparent-hyperperfusion-sign-in-123-i-iodoamphetamine-brain-perfusion-spect-for-the-diagnosis-of-idiopathic-normal-pressure-hydrocephalus
#11
Takuma Ohmichi, Masaki Kondo, Masahiro Itsukage, Hidetaka Koizumi, Shigenori Matsushima, Nagato Kuriyama, Kazunari Ishii, Etsuro Mori, Kei Yamada, Toshiki Mizuno, Takahiko Tokuda
OBJECTIVE The gold standard for the diagnosis of idiopathic normal pressure hydrocephalus (iNPH) is the CSF removal test. For elderly patients, however, a less invasive diagnostic method is required. On MRI, high-convexity tightness was reported to be an important finding for the diagnosis of iNPH. On SPECT, patients with iNPH often show hyperperfusion of the high-convexity area. The authors tested 2 hypotheses regarding the SPECT finding: 1) it is relative hyperperfusion reflecting the increased gray matter density of the convexity, and 2) it is useful for the diagnosis of iNPH...
March 16, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29520439/validation-of-davson-s-equation-in-patients-suffering-from-idiopathic-normal-pressure-hydrocephalus
#12
Afroditi-Despina Lalou, Virginia Levrini, Matthew Garnett, Eva Nabbanja, Dong-Joo Kim, Laurent Gergele, Anna Bjornson, Zofia Czosnyka, Marek Czosnyka
INTRODUCTION: The so-called Davson's equation relates baseline intracranial pressure (ICP) to resistance to cerebrospinal fluid outflow (Rout), formation of cerebrospinal fluid (If ) and sagittal sinus pressure (PSS ) There is a controversy over whether this fundamental equation is applicable in patients with normal pressure hydrocephalus (NPH). We investigated the relationship between Rout and ICP and also other compensatory, clinical and demographic parameters in NPH patients. METHOD: We carried out a retrospective study of 229 patients with primary NPH who had undergone constant-rate infusion studies in our hospital...
March 8, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29514517/a-systematic-review-of-the-diagnostic-utility-of-simple-tests-of-change-after-trial-removal-of-cerebrospinal-fluid-in-adults-with-normal-pressure-hydrocephalus
#13
Aileen Eugenia Scully, Edwin Choon Wyn Lim, Pei Pei Teow, Dawn May Leng Tan
OBJECTIVE: To synthesize the evidence regarding the diagnostic value of simple ancillary tests post cerebrospinal fluid drainage in normal pressure hydrocephalus. DATA SOURCES: MEDLINE, CINAHL, PsycINFO, Scopus, Web of Science, and Cochrane library databases; last searched on 12 September 2017. REVIEW METHODS: This review was performed applying the steps of the PRISMA statement. The QUADAS 2 tool was used to assess the risk of bias. Prospective and retrospective trials were systematically reviewed, and data on diagnostic accuracy were extracted...
February 1, 2018: Clinical Rehabilitation
https://www.readbyqxmd.com/read/29492569/significant-association-of-slow-vasogenic-icp-waves-with-normal-pressure-hydrocephalus-diagnosis
#14
Andreas Spiegelberg, Matthias Krause, Juergen Meixensberger, Burkhardt Seifert, Vartan Kurtcuoglu
OBJECTIVE: We aimed to test whether there is an association of slow vasogenic wave (SVW) occurrence with positive response to external lumbar drainage (ELD) and ventriculoperitoneal shunting and to design a method for the recognition and quantification of SVWs in the intracranial pressure (ICP) signal. MATERIALS AND METHODS: We constructed SVW templates using normalized sine waves. We calculated the cross-correlation between the respective SVW template and the ICP signal...
2018: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/29492566/is-there-a-link-between-icp-derived-infusion-test-parameters-and-outcome-after-shunting-in-normal-pressure-hydrocephalus
#15
Eva Nabbanja, Marek Czosnyka, Nicole C Keong, Matthew Garnett, John D Pickard, Despina Afroditi Lalou, Zofia Czosnyka
OBJECTIVE: The term "hydrocephalus" encompasses a range of disorders characterised by clinical symptoms, abnormal brain imaging and derangement of cerebrospinal fluid (CSF) dynamics. The ability to elucidate which patients would benefit from CSF diversion (a shunt or third ventriculostomy) is often unclear. Similar difficulties are encountered in shunted patients to predict the scope for improvement by shunt re-adjustment or revision. MATERIALS AND METHODS: We compared retrospective pre-shunting infusion test results performed in 310 adult patients diagnosed with normal pressure hydrocephalus (NPH) and their improvement after shunting...
2018: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/29492554/icp-and-antihypertensive-drugs
#16
Charlotte Rouzaud-Laborde, Pierre Lafitte, Laurent Balardy, Zofia Czosnyka, Eric A Schmidt
OBJECTIVES:  Arterial hypertension is among the leading risks for mortality. This burden requires in hypertensive patients the use of single, double or more antihypertensive drugs. The relationship between intracranial pressure (ICP) and arterial blood pressure is complex and still under debate. The impact of antihypertensive drugs on ICP is unknown. We wanted to understand whether the use of antihypertensive drugs has a significant influence on ICP and cerebrospinal fluid (CSF)/brain related parameters...
2018: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/29492548/critical-closing-pressure-during-a-controlled-increase-in-intracranial-pressure
#17
Katarzyna Kaczmarska, Magdalena Kasprowicz, Antoni Grzanka, Wojciech Zabołotny, Peter Smielewski, Despina Afroditi Lalou, Georgios Varsos, Marek Czosnyka, Zofia Czosnyka
OBJECTIVES: The objectives were to compare three methods of estimating critical closing pressure (CrCP) in a scenario of a controlled increase in intracranial pressure (ICP) induced during an infusion test in patients with suspected normal pressure hydrocephalus (NPH). METHODS: We retrospectively analyzed data from 37 NPH patients who underwent infusion tests. Computer recordings of directly measured intracranial pressure (ICP), arterial blood pressure (ABP) and transcranial Doppler cerebral blood flow velocity (CBFV) were used...
2018: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/29492547/are-slow-waves-of-intracranial-pressure-suppressed-by-general-anaesthesia
#18
Despina Afroditi Lalou, Marek Czosnyka, Joseph Donnelly, Andrea Lavinio, John D Pickard, Matthew Garnett, Zofia Czosnyka
OBJECTIVES: Slow waves of intracranial pressure (ICP) are spontaneous oscillations with a frequency of 0.3-4 cycles/min. They are often associated with pathological conditions, following vasomotor activity in the cranial enclosure. This study quantifies the effects of general anaesthesia (GA) on the magnitude of B-waves compared with natural sleep and the conscious state. MATERIALS AND METHODS: Four groups of 30 patients each were formed to assess the magnitude of slow waves...
2018: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/29485341/delayed-clearance-of-cerebrospinal-fluid-tracer-from-entorhinal-cortex-in-idiopathic-normal-pressure-hydrocephalus-a-glymphatic-magnetic-resonance-imaging-study
#19
Per K Eide, Geir Ringstad
The glymphatic system plays a key role for clearance of waste solutes from the rodent brain. We recently found evidence of glymphatic circulation in the human brain when using magnetic resonance imaging (MRI) contrast agent as cerebrospinal fluid (CSF) tracer in conjunction with multiple MRI acquisitions (gMRI). The present study explored the hypothesis that reduced glymphatic clearance in entorhinal cortex (ERC) may be instrumental in idiopathic normal pressure hydrocephalus (iNPH) dementia. gMRI acquisitions were obtained over a 24-48 h time span in cognitively affected iNPH patients and non-cognitively affected patients with suspected CSF leaks...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29480685/efficacy-of-diffusion-tensor-imaging-in-the-peri-operative-evaluation-of-corticospinal-tracts-and-gait-improvement-in-normal-pressure-hydrocephalus
#20
Tarek R Mansour, Ahmed Alnemari, Omar Ashour, Pouya Entezami, Mark Buehler, Daniel Gaudin
No abstract text is available yet for this article.
February 23, 2018: Journal of Neurosurgical Sciences
keyword
keyword
13396
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"