117 results match your criteria: "Center for Neurology and Rehabilitation[Affiliation]"

Encouraging arm use in stroke survivors: the impact of smart reminders during a home-based intervention.

J Neuroeng Rehabil

December 2024

Rehabilitation Engineering Laboratory, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland.

Background: Upper limb impairment post-stroke often leads to a predominant use of the less affected arm and consequent learned disuse of the affected side, hindering upper limb outcome. Wearable sensors such as accelerometers, combined with smart reminders (i.e.

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Correlation between P2-PCA volume flow rate and BOLD cerebrovascular reactivity in patients with symptomatic carotid artery occlusion.

AJNR Am J Neuroradiol

December 2024

From the Department of Neurosurgery (AW., J.F., L.M.H., J.P., M.G., V.S., C.H.B.v.N., L.R., G.E., M.S.), Clinical Neuroscience Center (AW., J.F., L.M.H., J.P., T.S., M.G., V.S., C.H.B.v.N., S.W., A.R.L., Z.K., L.R., G.E., M.S.), Department of Neuroradiology (Z.K.) and Department of Neurology (S.W., A.R.L.), University Hospital Zurich, Zurich, Switzerland; University of Zurich (AW., J.F., L.M.H., J.P., T.S., M.G., V.S., C.H.B.v.N., S.W., A.R.L., Z.K., L.R., G.E., M.S.), Zurich, Switzerland; cereneo Center for Neurology and Rehabilitation (A.R.L.), Vitznau, Switzerland.

Background And Purpose: Identifying and assessing hemodynamic and flow status in patients with symptomatic internal carotid artery (ICA) occlusion is crucial for evaluating recurrent stroke risk. The aim of this study was to analyze the correlation between two quantitative imaging modalities: (1) blood oxygenation level-dependent (BOLD) cerebrovascular reactivity (CVR) and (2) quantitative magnetic resonance angiography (qMRA) with non-invasive optimal vessel analysis (NOVA), measuring volume flow rate (VFR). Comparing these modalities is relevant for assessing collateral circulation and hemodynamic impairment.

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Article Synopsis
  • - Intravoxel incoherent motion (IVIM) imaging is a method used in MRI that helps assess blood flow issues in the brain during acute strokes without using contrast agents.
  • - A study involving 24 stroke patients found that lower IVIM values in the infarct core and adjacent areas after treatment correlated with worse recovery outcomes 90 days later.
  • - IVIM imaging may serve as a strong predictor of long-term recovery by showing impaired blood flow in damaged brain regions, demonstrating its potential for improving stroke assessments.
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Diurnal Profiles of the Endocrine Stress Response in Internet Gaming Disorder.

Psychopathology

November 2024

University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland.

Background: Differences in subjective stress perception and acute response of the hypothalamic-pituitary-adrenal axis have been reported in internet gaming disorder (IGD). The present study aimed to further investigate alterations in diurnal profiles of the endocrine stress response system in IGD compared to healthy controls (HCs).

Methods: The diurnal course of endocrine markers (salivary cortisol and α-amylase) was investigated in a clinical sample of n = 29 adolescents with IGD compared to n = 26 HC.

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Article Synopsis
  • The study examined sex-specific differences in stroke patient admissions and treatments over a six-year period, analyzing 7,102 patients to identify gaps in stroke care based on gender.
  • Women were generally older and had different stroke characteristics, such as higher rates of large vessel occlusions and more severe strokes; however, they also experienced longer treatment times and had worse 90-day recovery outcomes compared to men.
  • After accounting for confounding factors, such as age and severity of stroke, female sex did not significantly predict outcomes, highlighting the need for further sex-specific approaches in stroke management.
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Feasibility of Adjunct Therapy with a Robotic Hand Orthosis after Botulinum Toxin Injections in Persons with Spasticity: A Pilot Study.

Toxins (Basel)

August 2024

Rehabilitation Engineering Laboratory, Department of Health Sciences and Technology, ETH Zurich, Gloriastrasse 37/39, 8092 Zurich, Switzerland.

Article Synopsis
  • Upper-limb spasticity commonly occurs after central nervous system lesions and is often treated with botulinum neurotoxin type A (BoNT-A) injections to improve muscle function.
  • This study examined the use of a robotic hand orthosis (RELab tenoexo) combined with a mobile app as a therapy option after BoNT-A injections in chronic spastic patients.
  • Results indicated that after BoNT-A treatment, muscle tone decreased significantly, and most participants showed functional improvements with the robotic therapy, suggesting it could be a beneficial adjunct to traditional treatments.
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Background: Accumulating evidence suggests that cardiac findings after stroke are an important, yet understudied, manifestation of brain-heart interactions. Our aim was to investigate and compare cardiac findings after different cerebrovascular events (acute ischemic stroke, transient ischemic attack, and hemorrhagic stroke).

Methods And Results: There were 7113 patients screened who were treated between December 2013 and December 2020 at the University Hospital Zurich for ischemic stroke, transient ischemic attack, and hemorrhagic stroke.

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Objective: A superficial temporal artery-middle cerebral artery (STA-MCA) bypass is classically considered a low-flow bypass. It is known that the flow in the flow augmentation STA-MCA bypass is influenced by flow demand of the revascularized territory and can reach significantly higher values. The authors report their intraoperative flow measurement data in a consecutive series of 100 STA-MCA bypasses performed at their institution.

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Background: Treatment with vitamin K antagonists (VKAs) has been linked to worsening of kidney function in patients with atrial fibrillation (AF).

Objectives: XARENO (Factor XA-inhibition in RENal patients with non-valvular atrial fibrillation Observational registry; NCT02663076) is a prospective observational study comparing adverse kidney outcomes in patients with AF and advanced chronic kidney disease receiving rivaroxaban or VKA.

Methods: Patients with AF and an estimated glomerular filtration rate (eGFR) of 15 to 49 mL/min/1.

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Rationale: Novel therapeutic approaches are needed in stroke recovery. Whether pharmacological therapies are beneficial for enhancing stroke recovery is unclear. Dopamine is a neurotransmitter involved in motor learning, reward, and brain plasticity.

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Introduction: A significant number of patients who present with mild symptoms following large-vessel occlusion acute ischemic stroke (LVO-AIS) are currently considered ineligible for EVT. However, they frequently experience neurological deterioration during hospitalization. This study aimed to investigate the association between neurological deterioration and hemodynamic impairment by assessing steal phenomenon derived from blood oxygenation-level dependent cerebrovascular reactivity (BOLD-CVR) in this specific patient cohort.

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: Tandem lesions (TLs) cause up to 15-30% of all acute ischemic strokes (AISs). Endovascular treatment (EVT) is regarded as the first-line treatment; however, uncertainties remain with respect to the treatment and predictive outcome parameters. Here, we aimed to identify the clinical and demographic factors associated with functional short- and long-term outcomes in AIS patients with arteriosclerotic TLs undergoing EVT.

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Introduction: Clinical assessment of upper limb sensorimotor function post-stroke is often constrained by low sensitivity and limited information on movement quality. To address this gap, recent studies proposed a standardized instrumented drinking task, as a representative daily activity combining different components of functional arm use. Although kinematic movement quality measures for this task are well-established, and optical motion capture (OMC) has proven effective in their measurement, its clinical application remains limited.

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 Patients with atrial fibrillation (AF) and chronic kidney disease (CKD) are at high risk for both thromboembolism and bleeding events. The latter induces a potential reason for withholding oral anticoagulation (OAC) despite an indication for prophylaxis of thromboembolic events.  AF patients with CKD (estimated glomerular filtration [eGFR] rate between 15 and 49 mL/min per 1.

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Objective: Uncertainty remains regarding antithrombotic treatment in cervical artery dissection. This analysis aimed to explore whether certain patient profiles influence the effects of different types of antithrombotic treatment.

Methods: This was a post hoc exploratory analysis based on the per-protocol dataset from TREAT-CAD (NCT02046460), a randomized controlled trial comparing aspirin to anticoagulation in patients with cervical artery dissection.

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Purpose: Assessing feasibility and initial impact of the Home-Graded Repetitive Arm Supplementary Program combined with in-home accelerometer-based feedback (AH-GRASP) on perceived and actual daily-life upper limb (UL) activity in stroke survivors during the chronic phase with good UL motor function but low perceived daily-life activity.

Material And Methods: A 4-week intervention program (4 contact hours, 48 h self-practice) encompassing task-oriented training, behavioral techniques, phone-based support, monitoring, and weekly feedback sessions using wrist-worn accelerometery was implemented using a pre-post double baseline repeated measures design. Feasibility, clinical assessments, patient-reported outcomes, and accelerometer data were investigated.

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Background: A major clinical challenge is the adequate identification of patients with acute (<1 week) and subacute (1-6 weeks) ischemic stroke due to internal carotid artery (ICA) occlusion who could benefit from a surgical revascularization after a failure of endovascular and/or medical treatment. Recently, two novel quantitative imaging modalities have been introduced: (I) quantitative magnetic resonance angiography (qMRA) with non-invasive optimal vessel analysis (NOVA) for quantification of blood flow in major cerebral arteries (in mL/min), and (II) blood oxygenation level-dependent (BOLD) functional magnetic resonance imaging to assess cerebrovascular reactivity (CVR). The aim of this study is to present our cohort of patients who underwent surgical revascularization in the acute and subacute phase of ischemic stroke as well as to demonstrate the importance of hemodynamic and flow assessment for the decision-making regarding surgical revascularization in patients with acute and subacute stroke and ICA-occlusion.

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In acute ischemic stroke due to large-vessel occlusion (LVO), the clinical outcome after endovascular thrombectomy (EVT) is influenced by the extent of autoregulatory hemodynamic impairment, which can be derived from blood oxygenation level-dependent cerebrovascular reactivity (BOLD-CVR). BOLD-CVR imaging identifies brain areas influenced by hemodynamic steal. We sought to investigate the presence of steal phenomenon and its relationship to DWI lesions and clinical deficit in the acute phase of ischemic stroke following successful vessel recanalization.

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Background And Aims: The purpose of this Third Stroke Recovery and Rehabilitation Roundtable (SRRR3) was to develop consensus recommendations to address outstanding barriers for the translation of preclinical and clinical research using the non-invasive brain stimulation (NIBS) techniques Transcranial Magnetic Stimulation (TMS) and Transcranial Direct Current Stimulation (tDCS) and provide a roadmap for the integration of these techniques into clinical practice.

Methods: International NIBS and stroke recovery experts (N = 18) contributed to the consensus process. Using a nominal group technique, recommendations were reached via a five-stage process, involving a thematic survey, two priority ranking surveys, a literature review and an in-person meeting.

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Background And Aims: The purpose of this Third Stroke Recovery and Rehabilitation Roundtable (SRRR3) was to develop consensus recommendations to address outstanding barriers for the translation of preclinical and clinical research using the non-invasive brain stimulation (NIBS) techniques Transcranial Magnetic Stimulation (TMS) and Transcranial Direct Current Stimulation (tDCS) and provide a roadmap for the integration of these techniques into clinical practice.

Methods: International NIBS and stroke recovery experts (N = 18) contributed to the consensus process. Using a nominal group technique, recommendations were reached via a five-stage process, involving a thematic survey, two priority ranking surveys, a literature review and an in-person meeting.

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Introduction: Smoking is an established risk factor for stroke. However, several studies have reported a better outcome after stroke for patients who smoke. According to this "smoking paradox" hypothesis, smoking might promote less severe strokes, higher collateral scores, and smaller infarct cores.

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Article Synopsis
  • * It emphasizes that rehabilitation involves personalized, goal-oriented training, leveraging both biological recovery and compensatory strategies, necessitating continuous assessment and collaboration with patients.
  • * The framework aligns with the International Classification of Functioning and includes recommendations for clinical assessments, prediction tools, and interventions, aimed at enhancing patient outcomes and addressing gaps in current practices.
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Recurrent stroke is a dreaded complication of symptomatic internal carotid artery occlusion (ICAO). Transcranial Duplex (TCD)-derived increased flow velocity in the ipsilateral posterior cerebral artery (PCA)-P2 segment indicates activated leptomeningeal collateral recruitment and hemodynamic impairment. Leptomeningeal collaterals are pial vascular connections between the anterior and posterior vascular territories.

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Stent reconstruction in intracranial atherosclerotic disease related acute ischemic stroke results in high revascularization rates.

J Stroke Cerebrovasc Dis

September 2023

Department of Neuroradiology, Clinical Neurocenter, University Hospital Zurich, Frauenklinikstrasse 10, Zurich 8091, Switzerland. Electronic address:

Objectives: Intracranial atherosclerotic disease (ICAD) is a major cause of large vessel occlusion (LVO) in acute ischemic stroke (AIS). Our study aimed to analyze the effect of percutaneous transluminal angioplasty and stenting (PTAS) in patients with ICAD undergoing rescue treatment in terms of functional outcome and mortality rate at 90 days and compare the results to LVO with thromboembolic origins.

Materials And Methods: A retrospective review of a mechanical thrombectomy (MT) single center database from 01/2019 to 09/2021 was carried out using chart review and angiogram analysis.

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Background: Retinal artery occlusion (RAO) may lead to irreversible blindness. For acute RAO, intravenous thrombolysis (IVT) can be considered as treatment. However, due to the rarity of RAO, data about IVT safety and effectiveness is limited.

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