keyword
MENU ▼
Read by QxMD icon Read
search

Hemispheric stroke

keyword
https://www.readbyqxmd.com/read/28095921/papillary-fibroelastoma-of-the-aortic-valve-presenting-with-chronic-angina-and-acute-stroke-a-case-report
#1
Fan Zhang, Ziqiang Zhu, Gautham K Upadhya, Jiankun Tong, Vlad Gotlieb, Abdullah Khan, Rakesh P Gupta
BACKGROUND: Papillary fibroelastomas are rare, benign cardiac tumors that are often found on cardiac valvular surfaces. Most are incidental discoveries during surgery or autopsy. The clinical presentation of fibroelastoma varies widely, ranging from clinically asymptomatic to severe thromboembolic events. CASE PRESENTATION: We report a case of 65-year-old white man diagnosed with scattered, bilateral acute cerebral hemisphere infarcts with a history of chronic angina...
January 18, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28094088/usefulness-of-multiparametric-computerized-tomography-findings-in-the-differential-diagnosis-of-stroke-mimics-of-epileptic-origin-a-preliminary-study
#2
R López Ruiz, S Quintas, P Largo, M de Toledo, M T Carreras, A Gago-Veiga, R Manzanares, J Vivancos
OBJECTIVE: Thirty percent of the patients for whom code stroke is activated have stroke mimics, the most common being epilepsy. Our purpose was to evaluate the usefulness of multiparametric CT for differentiating between seizure-related symptoms and vascular events. MATERIAL AND METHODS: We conducted a retrospective observational study; data were gathered prospectively during one year. We studied multiparametric CT images of patients admitted following code stroke activation and finally diagnosed with epilepsy...
January 13, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28087473/salvianolic-acids-for-injection-safi-suppresses-inflammatory-responses-in-activated-microglia-to-attenuate-brain-damage-in-focal-cerebral-ischemia
#3
Pengwei Zhuang, Yanjun Wan, Shihan Geng, Ying He, Bo Feng, Zhengliang Ye, Dazheng Zhou, Dekun Li, Hongjun Wei, Hongyan Li, Yanjun Zhang, Aichun Ju
BACKGROUND: Inflammatory reactions induced by microglia in the brain play crucial roles in ischemia/reperfusion (I/R) cerebral injuries. Microglia activation has been shown to be closely related to TLR4/NF-κB signal pathways. Salvianolic acids for injection (SAFI) have been used in clinical practice to treat ischemic stroke with reported neuroprotective effects; however, the underlying mechanisms are still uncertain. OBJECTIVE AND METHODS: First, we studied the effect of SAFI on inflammatory responses in LPS-stimulated BV-2 microglia...
January 10, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28081452/differential-white-matter-involvement-associated-with-distinct-visuospatial-deficits-after-right-hemisphere-stroke
#4
Alex R Carter, Mark P McAvoy, Joshua S Siegel, Xin Hong, Serguei V Astafiev, Jennifer Rengachary, Kristi Zinn, Nicholas V Metcalf, Gordon L Shulman, Maurizio Corbetta
Visuospatial attention depends on the integration of multiple processes, and people with right hemisphere lesions after a stroke may exhibit severe or no visuospatial deficits. The anatomy of core components of visuospatial attention is an area of intense interest. Here we examine the relationship between the disruption of core components of attention and lesion distribution in a heterogeneous group (N = 70) of patients with right hemisphere strokes regardless of the presence of clinical neglect. Deficits of lateralized spatial orienting, measured as the difference in reaction times for responding to visual targets in the contralesional or ipsilesional visual field, and deficits in re-orienting attention, as measured by the difference in reaction times for invalidly versus validly cued targets, were measured using a computerized spatial orienting task...
December 20, 2016: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28079797/case-report-rapid-improvement-of-crossed-cerebellar-diaschisis-after-intravascular-laser-irradiation-of-blood-in-a-case-of-stroke
#5
Wan-Hua Yang, Shiou-Ping Lin, Shin-Tsu Chang
RATIONALE: Crossed cerebellar diaschisis (CCD) is a poor prognostic factor after stroke because without immediate cerebral reperfusion no further improvements in the patient's condition can be achieved. We investigated the clinical effects of intravascular laser irradiation therapy (ILIB) on CCD and evaluated the therapeutic effect in the sub-acute post-stroke stage. PATIENT CONCERNS: The 77-year-old male with cerebral infarction in the territory of the right anterior cerebral artery only underwent conservative treatment including hydration and aspirin in the acute post-stroke stage...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28066898/a-quantitative-symmetry-based-analysis-of-hyperacute-ischemic-stroke-lesions-in-noncontrast-computed-tomography
#6
Roman Peter, Panagiotis Korfiatis, Daniel Blezek, A Oscar Beitia, Irena Stepan-Buksakowska, Daniel Horinek, Kelly D Flemming, Bradley J Erickson
PURPOSE: Early identification of ischemic stroke plays a significant role in treatment and potential recovery of damaged brain tissue. In noncontrast CT (ncCT), the differences between ischemic changes and healthy tissue are usually very subtle during the hyperacute phase (< 8 h from the stroke onset). Therefore, visual comparison of both hemispheres is an important step in clinical assessment. A quantitative symmetry-based analysis of texture features of ischemic lesions in noncontrast CT images may provide an important information for differentiation of ischemic and healthy brain tissue in this phase...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/28049189/functional-long-term-outcome-after-left-versus-right-sided-intracerebral-hemorrhage
#7
Vanessa D Beuscher, Joji B Kuramatsu, Stefan T Gerner, Julia Köhn, Hannes Lücking, Stephan P Kloska, Hagen B Huttner
BACKGROUND AND PURPOSE: Hemispheric location might influence outcome after intracerebral hemorrhage (ICH). INTERACT suggested higher short-term mortality in right hemispheric ICH, yet statistical imbalances were not addressed. This study aimed at determining the differences in long-term functional outcome in patients with right- vs. left-sided ICH with a priori-defined sub-analysis of lobar vs. deep bleedings. METHODS: Data from a prospective hospital registry were analyzed including patients with ICH admitted between January 2006 and August 2014...
January 4, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28041532/laterality-and-body-ownership-effect-of-handedness-on-experience-of-the-rubber-hand-illusion
#8
M Smit, D I Kooistra, I J M van der Ham, H C Dijkerman
Body ownership has mainly been linked to the right hemisphere and larger interhemispheric connectivity has been shown to be associated with greater right hemispheric activation. Mixed-handed participants tend to have more interhemispheric connectivity compared to extreme handed participants. The aim of this study was to examine whether feelings of ownership as assessed with the rubber hand illusion (RHI) are differentiated by handedness and differed between the left and right hand. Sinistrals-, dextrals-, and mixed-handed individuals (n = 63) were subjected to the RHI...
January 2, 2017: Laterality
https://www.readbyqxmd.com/read/28039678/studying-the-neural-bases-of-prism-adaptation-using-fmri-a-technical-and-design-challenge
#9
Janet H Bultitude, Alessandro Farnè, Romeo Salemme, Danielle Ibarrola, Christian Urquizar, Jacinta O'Shea, Jacques Luauté
Prism adaptation induces rapid recalibration of visuomotor coordination. The neural mechanisms of prism adaptation have come under scrutiny since the observations that the technique can alleviate hemispatial neglect following stroke, and can alter spatial cognition in healthy controls. Relative to non-imaging behavioral studies, fMRI investigations of prism adaptation face several challenges arising from the confined physical environment of the scanner and the supine position of the participants. Any researcher who wishes to administer prism adaptation in an fMRI environment must adjust their procedures enough to enable the experiment to be performed, but not so much that the behavioral task departs too much from true prism adaptation...
December 30, 2016: Behavior Research Methods
https://www.readbyqxmd.com/read/28018988/gsk249320-a-monoclonal-antibody-against-the-axon-outgrowth-inhibition-molecule-myelin-associated-glycoprotein-improves-outcome-of-rodents-with-experimental-stroke
#10
Diana Cash, Alanna C Easton, Michel Mesquita, John Beech, Steve Williams, Andrew Lloyd, Elaine Irving, Steven C Cramer
Myelin-associated glycoprotein (MAG) is an inhibitor of axon growth. MAG levels increase after stroke. GSK249320 is a monoclonal antibody that neutralizes MAG-mediated inhibition and so may promote axon outgrowth and improve post-stroke outcomes. The current study tested the hypothesis that GSK249320 initiated 24 hours or 7 days after experimental stroke improves behavioural outcomes. Rats with right middle cerebral artery occlusion for 90 minutes were randomized to receive 6 weeks of intravenous (a) GSK249320 starting 24 hours post-stroke, (b) GSK249320 starting 7 days post-stroke, or (c) vehicle...
2016: J Neurol Exp Neurosci
https://www.readbyqxmd.com/read/28013040/affective-speech-prosody-perception-and-production-in-stroke-patients-with-left-hemispheric-damage-and-healthy-controls
#11
Joan H Leung, Suzanne C Purdy, Lynette J Tippett, Sylvia H S Leão
PURPOSE: 'Affective prosody' defines the supra-segmental features of speech that, when manipulated, can change the type and intensity of emotion conveyed by the speaker. Although the right hemisphere is predominantly linked to the processing of affective prosodic cues, existing literature also suggests that damage to the left hemisphere can result in similar deficits. This study aims to demonstrate, and add to the evidence, that patients with left-hemisphere injury experience difficulties with affective prosodic perception and production, measured via a new combination of assessments and analyses...
December 22, 2016: Brain and Language
https://www.readbyqxmd.com/read/28012353/impact-of-timing-of-cranioplasty-on-hydrocephalus-after-decompressive-hemicraniectomy-in-malignant-middle-cerebral-artery-infarction
#12
Tobias Finger, Vincent Prinz, Evelyn Schreck, Alexandra Pinczolits, Simon Bayerl, Thomas Liman, Johannes Woitzik, Peter Vajkoczy
OBJECTIVE: Patients with malignant middle cerebral artery infarction frequently develop hydrocephalus after decompressive hemicraniectomy. Hydrocephalus itself and known shunt related complications after ventriculo-peritoneal shunt implantation may negatively impact patientś outcome. Here, we aimed to identify factors associated with the development of hydrocephalus after decompressive hemicraniectomy in malignant middle cerebral artery infarction. PATIENTS AND METHODS: A total of 99 consecutive patients with the diagnosis of large hemispheric infarctions and the indication for decompressive hemicraniectomy were included...
December 9, 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28008092/amobes-active-mobility-very-early-after-stroke-a-randomized-controlled-trial
#13
Alain P Yelnik, Victorine Quintaine, Cedric Andriantsifanetra, Marie Wannepain, Peggy Reiner, Hélène Marnef, Mathilde Evrard, Elena Meseguer, Jean Pascal Devailly, Monica Lozano, Catherine Lamy, Florence Colle, Eric Vicaut
BACKGROUND AND PURPOSE: Intensive physical therapy (PT) facilitates motor recovery when provided during a subacute stage after stroke. The efficiency of very early intensive PT has been less investigated. We aimed to investigate whether intensive PT conducted within the first 2 weeks could aid recovery of motor control. METHODS: This multicentre randomized controlled trial compared soft PT (20-min/d apart from respiratory needs) and intensive PT (idem+45 minutes of intensive exercises/day) initiated within the first 72 hours after a first hemispheric stroke...
December 22, 2016: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28007584/neurogenesis-upregulation-on-the-healthy-hemisphere-after-stroke-enhances-compensation-for-age-dependent-decrease-of-basal-neurogenesis
#14
Joanna Adamczak, Markus Aswendt, Christina Kreutzer, Peter Rotheneichner, Adrien Riou, Marion Selt, Andreas Beyrau, Ulla Uhlenküken, Michael Diedenhofen, Melanie Nelles, Ludwig Aigner, Sebastien Couillard-Despres, Mathias Hoehn
Stroke is a leading cause of death and disability worldwide with no treatment for the chronic phase available. Interestingly, an endogenous repair program comprising inflammation and neurogenesis is known to modulate stroke outcome. Several studies have shown that neurogenesis decreases with age but the therapeutic importance of endogenous neurogenesis for recovery from cerebral diseases has been indicated as its ablation leads to stroke aggravation and worsened outcome. A detailed characterization of the neurogenic response after stroke related to ageing would help to develop novel and targeted therapies...
December 20, 2016: Neurobiology of Disease
https://www.readbyqxmd.com/read/28006971/association-of-clinical-headache-features-with-stroke-location-an-mri-voxel-based-symptom-lesion-mapping-study
#15
Christian L Seifert, Etienne M Schönbach, Claus Zimmer, Annette Förschler, Thomas R Tölle, Regina Feurer, Jens Gempt, Athina Papadopoulou, Stefano Magon, Till Sprenger, Holger Poppert
Background We have recently shown that the presence of headache in ischemic stroke is associated with lesions of the insular cortex. The aim of this post-hoc subgroup analysis was to investigate the association of specific headache features with stroke location in patients with acute ischemic stroke. Methods In this observational study, patients (mean age: 61.5, 58% males) with ischemic stroke and acute headache (n = 49) were investigated. Infarcts were manually outlined on 3D diffusion weighted magnetic resonance imaging (MRI) scans and transformed into standard stereotaxic space; lesions of the left hemisphere were mirrored in the x-axis to allow a voxel-wise group analysis of all patients...
January 1, 2016: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28004991/bilateral-versus-ipsilesional-cortico-subcortical-activity-patterns-in-stroke-show-hemispheric-dependence
#16
A Cristina Vidal, Paula Banca, Augusto G Pascoal, Gustavo C Santo, João Sargento-Freitas, Ana Gouveia, Miguel Castelo-Branco
Background Understanding of interhemispheric interactions in stroke patients during motor control is an important clinical neuroscience quest that may provide important clues for neurorehabilitation. In stroke patients, bilateral overactivation in both hemispheres has been interpreted as a poor prognostic indicator of functional recovery. In contrast, ipsilesional patterns have been linked with better motor outcomes. Aim We investigated the pathophysiology of hemispheric interactions during limb movement without and with contralateral restraint, to mimic the effects of constraint-induced movement therapy...
January 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28004906/transcranial-and-spinal-cord-magnetic-stimulation-in-treatment-of-spasticity-a-literature-review-and-meta-analysis
#17
Julia Korzhova, Dmitry Sinitsyn, Alexander Chervyakov, Alexandra Poydasheva, Maria Zakharova, Natalia Suponeva, Lyudmila Chernikova, Michael Piradov
INTRODUCTION: Spasticity is associated with various diseases of the nervous system. Current treatments such as drug therapy, botulinum toxin injections, kinesitherapy, and physiotherapy are not sufficiently effective in a large number of patients. Transcranial magnetic stimulation (TMS) can be considered as an alternative method of treatment. The purpose of this article is to conduct a systematic review and meta-analysis of all available publications assessing the efficacy of repetitive TMS in treatment of spasticity...
December 22, 2016: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28001316/computed-tomography-based-quantification-of-lesion-water-uptake-identifies-patients-within-4-5-hours-of-stroke-onset-a-multicenter-observational-study
#18
Jens Minnerup, Gabriel Broocks, Judith Kalkoffen, Soenke Langner, Michael Knauth, Marios Nikos Psychogios, Heike Wersching, Anja Teuber, Walter Heindel, Bernd Eckert, Heinz Wiendl, Peter Schramm, Jens Fiehler, André Kemmling
OBJECTIVE: Many patients with stroke cannot receive intravenous thrombolysis because the time of symptom onset is unknown. We tested whether computed tomography (CT)-based quantification of water uptake in the ischemic tissue can identify patients with stroke onset within 4.5 hours, the time window of thrombolysis. METHODS: Perfusion CT was used to identify ischemic brain tissue, and its density was measured in native CT and related to the density of the corresponding area of the contralateral hemisphere to quantify lesion water uptake...
December 2016: Annals of Neurology
https://www.readbyqxmd.com/read/28000975/hypointense-vessels-detected-by-susceptibility-weighted-imaging-identifies-tissue-at-risk-of-infarction-in-anterior-circulation-stroke
#19
Bastian Cheng, Nikolaus Schröder, Nils Daniel Forkert, Peter Ludewig, André Kemmling, Tim Magnus, Jens Fiehler, Christian Gerloff, Götz Thomalla
BACKGROUND AND PURPOSE: The diagnostic value of susceptibility-weighted magnetic resonance imaging of acute stroke patients has shown potential as a surrogate marker of impaired hemodynamics. We investigate the value of asymmetrical hypointense cerebral vessels (HV) for the identification of vessel status and tissue at risk of infarction (TaR). METHODS: Symmetry of HV was visually rated on SWI data from a well-defined population of acute anterior circulation stroke with onset <24 hours...
December 21, 2016: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/27997443/automated-infarct-core-volumetry-within-the-hypoperfused-tissue-technical-implementation-and-evaluation
#20
Elias Kellner, Marco Reisert, Valerij G Kiselev, Christoph J Maurer, Lena-Alexandra Beume, Horst Urbach, Karl Egger
OBJECTIVE: The aim of this study was to develop a rapid and fully automatic infarct core and tissue at risk volumetry approach in acute ischemic stroke. METHODS: We evaluated an algorithm in which segmentation was restricted to 1 hemisphere and the potential lesion characterized on the basis of the perfusion parameter Tmax with a region-wise comparison of local histograms to its mirrored counterpart. RESULTS: We applied the "Tmax inside" method to 30 cases of a public data set with ground-truth segmentations for diffusion-weighted and perfusion magnetic resonance imaging...
December 15, 2016: Journal of Computer Assisted Tomography
keyword
keyword
90647
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"