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Condition: Reflex Sympathetic Dystrophy

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Total 1447 results found since Jan 2013.

Increased Renal Dysfunction, Apoptosis, and Fibrogenesis Through Sympathetic Hyperactivity After Focal Cerebral Infarction
In this study, we investigated whether sympathetic hyperactivity can cause the development of renal dysfunction, apoptosis, and fibrogenesis after focal cerebral infarction. To determine the renal consequences of focal cerebral ischemia, we subjected a mice model of transient middle cerebral artery occlusion (tMCAO) and examined systolic blood pressure, heart rate, renal structure and function, serum catecholamine, and cortisol levels, and the expression of active caspase-3 bcl-2, bax, and phosphorylated p38 MAPK after 8 weeks. We also analyzed the relationship between insular cortex infarction and acute kidney injury (AKI...
Source: Translational Stroke Research - March 12, 2021 Category: Neurology Source Type: research

Correlation of N30 somatosensory evoked potentials with spasticity and neurological function after stroke: A cross-sectional study
CONCLUSION: N30 somatosensory evoked potential status correlates with the degrees of spasticity and motor function of stroke patients. The results showed that N30 somatosensory evoked potentials hold promise as a biomarker for the development of spasticity and the recovery of proximal limbs.PMID:34435643 | DOI:10.2340/16501977-2867
Source: Journal of Rehabilitation Medicine - August 26, 2021 Category: Rehabilitation Authors: Lilin Chen Weijie Li Shimei Cheng Shouyi Liang Mudan Huang Tingting Lei Xiquan Hu Zhenhong Liang Haiqing Zheng Source Type: research

Effect of Stretching of Spastic Elbow Under Intelligent Control in Chronic Stroke Survivors —A Pilot Study
Conclusion: The intelligent stretching had a short-term positive influence on the passive movement ROM. Hence, intelligent stretching can potentially be used to repeatedly and regularly stretch spastic elbow joints, which subsequently helps to reduce upper limb impairments post-stroke.
Source: Frontiers in Neurology - December 14, 2021 Category: Neurology Source Type: research

Impact of Voluntary Muscle Activation on Stretch Reflex Excitability in Individuals With Hemiparetic Stroke
ConclusionsStretch reflex attenuation induced by repeated fast stretches may be nullified when individuals post-stroke volitionally activate their muscles. In contrast, resting may enable a sustained reflex attenuation if the individual remains relaxed.SignificanceStretching is commonly implemented to reduce hyperactive stretch reflexes following a stroke. These findings suggest that stretch reflex accommodation arising from repeated fast stretching may be reversed once an individual volitionally moves their paretic arm.
Source: Frontiers in Neurology - March 8, 2022 Category: Neurology Source Type: research

The effect of a home-based coaching program on heart rate variability in subacute stroke patients: a randomized controlled trial
Autonomic imbalance in stroke is characterized by increased sympathetic activity and reduced vagal nerve activity. Physical activity could be a strategy to counteract autonomic control impairments after a stroke. The aim of the study was to evaluate the effect on heart rate variability of a 6-month coaching program in a home setting in subacute stroke patients. Eighty-four stroke patients participated in the study. They were randomly assigned to the experimental group or the control group. The intervention was a coaching program, consisting of physical activity, home visits and a weekly phone call. Patients were evaluated ...
Source: International Journal of Rehabilitation Research - August 11, 2022 Category: Rehabilitation Tags: Original articles Source Type: research

Cortico –hypothalamic pathway of Horner syndrome derived from isolated lenticulostriate stroke
ConclusionThese findings suggest that Horner syndrome may be due to a disruption of an uncrossed cortico-basal ganglia-hypothalamic sympathetic pathway.
Source: Clinical Autonomic Research - December 12, 2022 Category: Research Source Type: research

Position-Dependent, Hyperexcitable Patellar Reflex Dynamics in Chronic Stroke
Abstract: Objectives: To quantify tendon tap response (TTR) properties and their position dependence using multiple neuromechanical parameters, and to analyze correlations among neuromechanical and clinical measures.Design: Hyperexcitable dynamics of TTR were investigated in a case-control manner. An instrumented hammer was used to induce the patellar deep tendon reflex (DTR), with reflex-mediated electromyography and torque responses measured across a range of knee flexion.Setting: Research laboratory in a rehabilitation hospital.Participants: Chronic hemiplegic stroke survivors (n=9) and healthy subjects (n=13).Intervent...
Source: Archives of Physical Medicine and Rehabilitation - October 12, 2012 Category: Rehabilitation Authors: Chung-Yong Yang, Xin Guo, Yupeng Ren, Sang Hoon Kang, Li-Qun Zhang Tags: Original Articles Source Type: research

Myotonic dystrophy type 1 presenting with stroke-like episodes: a case report
Conclusions: DM1 may be the cause of cerebral white matter lesions. This is the first case of DM1 presenting with stroke-like episodes.
Source: BMC Research Notes - June 26, 2013 Category: Research Authors: Jens RollnikUte HeinzOlaf Lenz Source Type: research

Deficits in startle-evoked arm movements increase with impairment following stroke
Conclusions: We conclude that the task-inappropriate flexor activity likely results from cortical or corticospinal damage leading to an unsuppressed or hypermetric classic startle reflex that interrupts startReact elbow extension.Significance: Given startReact’s functional role in compensation during environmental disturbances, our results may have important implications for our understanding deficits in stroke survivor’s response to unexpected environmental disturbances.
Source: Clinical Neurophysiology - January 10, 2014 Category: Neuroscience Authors: Claire Fletcher Honeycutt, Eric Jon Perreault Tags: Movement, Motor Control and Movement Disorders Source Type: research

Head impulse gain and saccade analysis in pontine-cerebellar stroke and vestibular neuritis
Conclusion: HIT gains and compensatory saccades differ between PCS and VN. VN was characterized by unilateral gain deficits with asymmetric large saccades, AICA stroke by more symmetric bilateral gain reduction with smaller saccades, and PICA stroke by contralesional gain bias with the smallest saccades. Saccade and gain asymmetry should be investigated further in future diagnostic accuracy studies. Classification of evidence: This study provides Class II evidence that aVOR testing accurately distinguishes patients with PCS from VN (sensitivity 94%–97%, specificity 90%–100%).
Source: Neurology - October 20, 2014 Category: Neurology Authors: Chen, L., Todd, M., Halmagyi, G. M., Aw, S. Tags: ARTICLE Source Type: research

Autonomic dysfunction in acute ischemic stroke: an underexplored therapeutic area?
Impaired autonomic function, characterized by a predominance of sympathetic activity, is common in patients with acute ischemic stroke. This review describes methods to measure autonomic dysfunction in stroke patients. It summarizes a potential relationship between ischemic stroke-associated autonomic dysfunction and factors that have been associated with worse outcome, including cardiac complications, blood pressure variability changes, hyperglycemia, immune depression, sleep disordered breathing, thrombotic effects, and malignant edema.
Source: Journal of the Neurological Sciences - December 8, 2014 Category: Neurology Authors: Sylvie De Raedt, Aurelie De Vos, Jacques De Keyser Source Type: research

Cross-talk between the inflammatory response, sympathetic activation and pulmonary infection in the ischemic stroke
The immune system response and inflammation play a key role in brain injury during and after a stroke. The acute immune response is responsible for secondary brain tissue damage immediately after the stroke, followed by immunosuppression due to sympathetic nervous system activation. The latter increases risk of infection complications, such as pneumonia. The pneumonia-related inflammatory state can release a bystander autoimmune response against central nervous system antigens, thereby initiating a vicious circle. The aim of this review is to summarize the relationship between ischemic stroke, sympathetic nervous system ac...
Source: Journal of Neuroinflammation - December 24, 2014 Category: Neurology Authors: Pawel WinklewskiMarek RadkowskiUrszula Demkow Source Type: research