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Aphasia due to stroke

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https://www.readbyqxmd.com/read/29102390/comorbidities-clinical-features-and-prognostic-implications-of-cancer-patients-with-cerebrovascular-disease
#1
Bernardo Cacho-Díaz, Nydia A Lorenzana-Mendoza, Héctor Spínola-Maroño, Gervith Reyes-Soto, Carlos Cantú-Brito
PURPOSE: The objective of this study was to identify and describe the comorbidities, clinical features, and prognostic implications of cancer patients with cerebrovascular disease. MATERIALS AND METHODS: All patients with cerebrovascular disease (CVD) seen in the neuro-oncology unit at a cancer referral center from April 2010 to November 2016 were included; demographic, oncologic diagnosis, risk factors, and prognostic considerations were presented as well. RESULTS: We report on 256 patients with CVD and cancer, of whom 66% were women...
October 25, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29070627/tdcs-over-the-motor-cortex-improves-lexical-retrieval-of-action-words-in-post-stroke-aphasia
#2
Meret Branscheidt, Julia Hoppe, Pienie Zwitserlood, Gianpiero Liuzzi
One-third of stroke survivors worldwide suffer from aphasia. Speech and language therapy (SLT) is considered effective in treating aphasia, but due to time constraints, improvements are often limited. Non-invasive brain stimulation is a promising adjuvant strategy to facilitate SLT. However, stroke might render "classical" language regions ineffective as stimulation sites. Recent work showed the effectiveness of motor-cortex stimulation together with intensive naming therapy to improve outcomes in aphasia (Meinzer et al...
October 25, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29054018/isolated-aphasia-in-the-emergency-department-the-likelihood-of-ischemia-is-low
#3
Gabriel Casella, Rafael H Llinas, Elisabeth B Marsh
OBJECTIVE: Aphasia is a common presentation of ischemic stroke, often diagnosed in the acute setting using tools such as the NIH Stroke Scale (NIHSS). Due to the vascular distribution of the middle cerebral artery, it is often accompanied by other symptoms such as weakness, sensory loss, or visual changes. Isolated aphasia due to ischemia is possible, but language problems mimicking aphasia syndromes can also be seen with other diagnoses such as metabolic abnormalities or dementia. In this study, we determine the incidence of aphasia-only strokes using the NIHSS, and factors associated with a higher likelihood of ischemia...
December 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29050387/temporal-lobe-networks-supporting-the-comprehension-of-spoken-words
#4
Leonardo Bonilha, Argye E Hillis, Gregory Hickok, Dirk B den Ouden, Chris Rorden, Julius Fridriksson
Auditory word comprehension is a cognitive process that involves the transformation of auditory signals into abstract concepts. Traditional lesion-based studies of stroke survivors with aphasia have suggested that neocortical regions adjacent to auditory cortex are primarily responsible for word comprehension. However, recent primary progressive aphasia and normal neurophysiological studies have challenged this concept, suggesting that the left temporal pole is crucial for word comprehension. Due to its vasculature, the temporal pole is not commonly completely lesioned in stroke survivors and this heterogeneity may have prevented its identification in lesion-based studies of auditory comprehension...
September 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28971638/computed-tomography-perfusion-maps-reveal-blood-flow-dynamics-in-postictal-patients-a-novel-diagnostic-tool
#5
Shahar Shelly, Nicola Maggio, Marina Boxer, Ilan Blatt, David Tanne, David Orion
BACKGROUND: Computed tomography (CT) brain perfusion is a relatively new imaging method that can be used to differentiate patients following epileptic seizures in the setting of acute neurological deficits (e.g., hemiparesis, hemiplegia, hemianopsia, aphasia) who arrive at the emergency room with a suspected stroke. OBJECTIVES: To evaluate brain perfusion changes in patients who had an epileptic seizure. METHODS: We retrospectively identified 721 patients who presented at our stroke center between 2012 and 2015 with a suspected acute stroke and underwent examination thorough a stroke protocol, including cerebral CT perfusion (CTP) and CT angiography (CTA) within 8 hours from the onset of symptoms...
September 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28917165/cerebellar-induced-differential-polyglot-aphasia-a-neurolinguistic-and-fmri-study
#6
Peter Mariën, Kim van Dun, Johanna Van Dormael, Dorien Vandenborre, Stefanie Keulen, Mario Manto, Jo Verhoeven, Jubin Abutalebi
Research has shown that linguistic functions in the bilingual brain are subserved by similar neural circuits as in monolinguals, but with extra-activity associated with cognitive and attentional control. Although a role for the right cerebellum in multilingual language processing has recently been acknowledged, a potential role of the left cerebellum remains largely unexplored. This paper reports the clinical and fMRI findings in a strongly right-handed (late) multilingual patient who developed differential polyglot aphasia, ataxic dysarthria and a selective decrease in executive function due to an ischemic stroke in the left cerebellum...
September 13, 2017: Brain and Language
https://www.readbyqxmd.com/read/28885640/inner-speech-s-relationship-with-overt-speech-in-poststroke-aphasia
#7
Brielle C Stark, Sharon Geva, Elizabeth A Warburton
Purpose: Relatively preserved inner speech alongside poor overt speech has been documented in some persons with aphasia (PWA), but the relationship of overt speech with inner speech is still largely unclear, as few studies have directly investigated these factors. The present study investigates the relationship of relatively preserved inner speech in aphasia with selected measures of language and cognition. Method: Thirty-eight persons with chronic aphasia (27 men, 11 women; average age 64...
September 18, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28844524/mechanical-thrombectomy-for-pediatric-acute-stroke-and-ventricular-assist-device
#8
Robert Clinton Stowe, Peter Kan, Day Burruss Breen, Sonika Agarwal
BACKGROUND: Certain pediatric populations have increased risk of ischemic strokes, including those with cardiac disease and those dependent on mechanical circulatory devices such as ventricular assist devices. Due to their need for chronic anticoagulation, patients with mechanical circulatory devices are not candidates for systemic thrombolysis and thus treatment of acute ischemic stroke is limited. CASE: A 9-year-old boy with a ventricular assist device presented with acute onset of dense right hemiparesis, global aphasia, and a pediatric NIHSS score of 23...
August 24, 2017: Brain & Development
https://www.readbyqxmd.com/read/28844393/pure-apraxia-of-speech-due-to-infarct-in-premotor-cortex
#9
Riddhi Patira, Lauren Ciniglia, Timothy Calvert, Eric L Altschuler
Apraxia of speech (AOS) is now recognized as an articulation disorder distinct from dysarthria and aphasia. Various lesions have been associated with AOS in studies that are limited in precise localization due to variability in size and type of pathology. We present a case of pure AOS in setting of an acute stroke to localize more precisely than ever before the brain area responsible for AOS, dorsal premotor cortex (dPMC). The dPMC is in unique position to plan and coordinate speech production by virtue of its connection with nearby motor cortex harboring corticobulbar tract, supplementary motor area, inferior frontal operculum, and temporo-parietal area via the dorsal stream of dual-stream model of speech processing...
August 18, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28843341/artificial-grammar-learning-in-vascular-and-progressive-non-fluent-aphasias
#10
Thomas E Cope, Benjamin Wilson, Holly Robson, Rebecca Drinkall, Lauren Dean, Manon Grube, P Simon Jones, Karalyn Patterson, Timothy D Griffiths, James B Rowe, Christopher I Petkov
Patients with non-fluent aphasias display impairments of expressive and receptive grammar. This has been attributed to deficits in processing configurational and hierarchical sequencing relationships. This hypothesis had not been formally tested. It was also controversial whether impairments are specific to language, or reflect domain general deficits in processing structured auditory sequences. Here we used an artificial grammar learning paradigm to compare the abilities of controls to participants with agrammatic aphasia of two different aetiologies: stroke and frontotemporal dementia...
September 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28816772/a-case-of-lenticulostriate-stroke-due-to-minor-closed-head-injury-in-a-2-year-old-child-role-of-mineralizing-angiopathy
#11
Emin Fidan, Dana D Cummings, Mioara D Manole
OBJECTIVE: Cerebral infarction due to minor head injury is rare. Mineralizing angiopathy is considered a predisposing factor for lenticulostriate stroke after minor closed head injury. This entity is characterized by infarction of the basal ganglia and most often occurs in young children, from infancy to 2 years of age. Symptoms usually occur immediately after the injury. METHODS AND RESULTS: We present the case of a previously healthy 2-year-old female child presenting with right facial hemiparesis and aphasia, along with right arm and leg weakness that occurred immediately after a fall from the couch onto a carpeted floor...
July 3, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28811520/chronic-post-stroke-aphasia-severity-is-determined-by-fragmentation-of-residual-white-matter-networks
#12
Barbara K Marebwa, Julius Fridriksson, Grigori Yourganov, Lynda Feenaughty, Chris Rorden, Leonardo Bonilha
Many stroke survivors with aphasia in the acute period experience spontaneous recovery within the first six months after the stroke. However, approximately 30-40% sustain permanent aphasia and the factors determining incomplete recovery are unclear. Suboptimal recovery may be influenced by disruption of areas seemingly spared by the stroke due to loss of white matter connectivity and network integrity. We reconstructed individual anatomical whole-brain connectomes from 90 left hemisphere stroke survivors using diffusion MR images...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28803767/semantic-control-deficits-impair-understanding-of-thematic-relationships-more-than-object-identity
#13
Hannah Thompson, James Davey, Paul Hoffman, Glyn Hallam, Rebecca Kosinski, Sarah Howkins, Emma Wooffindin, Rebecca Gabbitas, Elizabeth Jefferies
Recent work has suggested a potential link between the neurocognitive mechanisms supporting the retrieval of events and thematic associations (i.e., knowledge about how concepts relate in a meaningful context) and semantic control processes that support the capacity to shape retrieval to suit the circumstances. Thematic associations and events are inherently flexible: the meaning of an item changes depending on the context (for example, lamp goes with reading, bicycle and police). Control processes might stabilise weak yet currently-relevant interpretations during event understanding...
September 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28632508/combined-dextroamphetamine-and-transcranial-direct-current-stimulation-in-poststroke-aphasia
#14
RANDOMIZED CONTROLLED TRIAL
Zafer Keser, Michelle Weber Dehgan, Shaparak Shadravan, Nuray Yozbatiran, Lynn M Maher, Gerard E Francisco
There is a growing need for various effective adjunctive treatment options for speech recovery after stroke. A pharmacological agent combined with noninvasive brain stimulation has not been previously reported for poststroke aphasia recovery. In this "proof of concept" study, we aimed to test the safety of a combined intervention consisting of dextroamphetamine, transcranial direct current stimulation, and speech and language therapy in subjects with nonfluent aphasia. Ten subjects with chronic nonfluent aphasia underwent two experiments where they received dextroamphetamine or placebo along with transcranial direct current stimulation and speech and language therapy on two separate days...
October 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28627034/brief-mindfulness-meditation-group-training-in-aphasia-exploring-attention-language-and-psychophysiological-outcomes
#15
Rebecca Shisler Marshall, Jacqueline Laures-Gore, Kim Love
BACKGROUND: Stroke is currently the leading cause of long-term disability in adults in the United States. There is a need for accessible, low-cost treatments of stroke-related disabilities such as aphasia. AIMS: To explore an intervention for aphasia utilizing mindfulness meditation (MM). This preliminary study examines the feasibility of teaching MM to individuals with aphasia. Since physiological measures have not been collected for those with aphasia, the study was also an exploration of the potential attention, language and physiological changes after MM in adults with aphasia during a brief, daily group training...
June 19, 2017: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/28626543/cerebral-stroke-in-a-teenage-girl-with-paroxysmal-nocturnal-hemoglobinuria
#16
Francesco Gervasi, Lucia D'Amelio, Antonino Trizzino, Fabrizia Ferraro, Delia Russo, Giuseppe Santangelo, Francesca Cardella, Angela Trizzino, Floriana Di Marco, Piero Farruggia
We report a case of paroxysmal nocturnal hemoglobinuria (PNH) in a 14 year-old girl presenting a cerebral arterial thrombosis. The initial diagnosis was carential anemia due to menarche following identification of slight macrocytic anemia, leucopenia and mild thrombocytopenia at routine blood analysis. The child was eventually referred to a children's hospital after the onset of progressive fatigue, anorexia and paleness. Severe anemia (hemoglobin 6 g/dL) with negative Coombs test, mild leucopenia (white blood cells 4...
June 1, 2017: Hematology Reports
https://www.readbyqxmd.com/read/28611609/transcranial-direct-current-stimulation-in-post-stroke-chronic-aphasia-the-impact-of-baseline-severity-and-task-specificity-in-a-pilot-sample
#17
Catherine Norise, Daniela Sacchetti, Roy Hamilton
Emerging evidence suggests that transcranial direct current stimulation (tDCS) can improve aspects of language production in persons with chronic non-fluent aphasia due to left hemisphere stroke. However, to date, studies exploring factors that predict response to tDCS in this or any patient population remain sparse, as are studies that investigate the specific aspects of language performance that are most responsive to stimulation. The current study explored factors that could predict recovery of language fluency and which aspects of language fluency could be expected to improve with the identified factor(s)...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28538224/transcortical-sensory-aphasia-after-left-frontal-lobe-infarction-loss-of-functional-connectivity
#18
Miseon Kwon, Woo Hyun Shim, Sang-Joon Kim, Jong S Kim
BACKGROUND: The underlying mechanism of transcortical sensory aphasia (TSA) caused by lesions occurring in the left frontal lobe remains unclear. We attempted to investigate the mechanism with the use of functional MRI (fMRI). METHODS: We studied 2 patients with TSA after a left frontal infarction identified by diffusion-weighted MRI. As control subjects, a patient with transcortical motor aphasia and a healthy normal adult were chosen. The Korean version of Western Aphasia Battery was performed initially and at 3 months post stroke...
2017: European Neurology
https://www.readbyqxmd.com/read/28525836/arterial-spin-labelling-shows-functional-depression-of-non-lesion-tissue-in-chronic-wernicke-s-aphasia
#19
Holly Robson, Karsten Specht, Helen Beaumont, Laura M Parkes, Karen Sage, Matthew A Lambon Ralph, Roland Zahn
Behavioural impairment post-stroke is a consequence of structural damage and altered functional network dynamics. Hypoperfusion of intact neural tissue is frequently observed in acute stroke, indicating reduced functional capacity of regions outside the lesion. However, cerebral blood flow (CBF) is rarely investigated in chronic stroke. This study investigated CBF in individuals with chronic Wernicke's aphasia (WA) and examined the relationship between lesion, CBF and neuropsychological impairment. Arterial spin labelling CBF imaging and structural MRIs were collected in 12 individuals with chronic WA and 13 age-matched control participants...
July 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28357585/uneven-cerebral-hemodynamic-change-as-a-cause-of-neurological-deterioration-in-the-acute-stage-after-direct-revascularization-for-moyamoya-disease-cerebral-hyperperfusion-and-remote-ischemia-caused-by-the-watershed-shift
#20
Xian-Kun Tu, Miki Fujimura, Sherif Rashad, Shunji Mugikura, Hiroyuki Sakata, Kuniyasu Niizuma, Teiji Tominaga
Superficial temporal artery-middle cerebral artery (STA-MCA) anastomosis is the standard surgical treatment for moyamoya disease (MMD). The main potential complications of this treatment are cerebral hyperperfusion (CHP) syndrome and ischemia, and their managements are contradictory to each other. We retrospectively investigated the incidence of the simultaneous manifestation of CHP and infarction after surgery for MMD. Of the 162 consecutive direct revascularization surgeries performed for MMD, we encountered two adult cases (1...
July 2017: Neurosurgical Review
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