neurophysiological tests
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2021 ◽  
Vol 10 (14) ◽  
pp. 3065
Author(s):  
Lorena Vega-Zelaya ◽  
Álvaro Iborra ◽  
Manuel Villanueva ◽  
Jesús Pastor ◽  
Concepción Noriega

Background: Tarsal tunnel syndrome (TTS) is one of the most common entrapment syndromes. Although diagnosis is supported by imaging tests, it has so far been based on clinical findings. Neurophysiological tests are not effective for providing an accurate diagnosis. The objective of this study was to analyze the efficacy of the ultrasound-guided near-nerve needle sensory technique (USG-NNNS) for the diagnosis of TTS Methods: The study population comprised 40 patients referred for a neurophysiological study owing to clinical suspicion of TTS. Routine neurophysiological tests were performed and compared with the results of USG-NNNS. Results: The diagnosis of TTS was achieved in 90% of cases. We found significant differences between lateral plantar sensory recordings with surface electrodes and USG-NNNS techniques for amplitude, nerve conduction velocity (NCV), and duration. As for the medial plantar sensory recordings, differences were found only for duration. No responses were obtained with surface electrode studies in 64.8% of cases. In addition, we observed normal sensory NCV with surface electrodes in 20 patients, although this decreased when the NNNS technique was used. Conclusions: This is the first report of the efficacy of the USG-NNNS technique for confirming the diagnosis of TTS.


2021 ◽  
Vol 8 (1) ◽  
pp. 1-5
Author(s):  
Gabriella Fizzotti ◽  

Introduction: The aetiology of conversion disorder is unknown, though association with emotional stress and with organic brain disorder has been described. Paraplegia as a conversion reaction has been reported infrequently. Combination of motor and sensory disturbance, other than paraplegia, may occur as a manifestation of a conversion reaction, and may suggest Spinal Cord Injury (SCI). Case Report: A 35-year-old Italian woman who had a history of post traumatic SCI which affected her lower limb when she was 29 years old. Patient was unable to empty his bladder completely.The aim of this paper is to describe the correlation between diagnosis of conversion disease and SCI. Clinical Rehabilitation Impact: Chronic conversion disorder can be resistant to rehabilitation treatment. Neurophysiological diagnostic procedures adopted in our study discern the degree of central and peripheral nervous system damage and confirmed the integrity of spinal cord in conversion disorder. Conclusion: Our case report describes the association between conversion disease, SCI, and neurophysiological tests and suggests to apply the neurophysiological tests to validate conversion disorder diagnosis in SCI.


Renal Failure ◽  
2021 ◽  
Vol 43 (1) ◽  
pp. 577-584
Author(s):  
Fabiola Sanchez-Meza ◽  
Aldo Torre ◽  
Lilia Castillo-Martinez ◽  
Sofia Sanchez-Roman ◽  
Luis Eduardo Morales-Buenrostro

2021 ◽  
Vol 12 ◽  
Author(s):  
Yingsheng Xu ◽  
Junyi Chen ◽  
Shuo Zhang ◽  
Dongsheng Fan

Objective: We investigated upper motor neuron (UMN) signs in the cervical region in a Chinese clinic-based cohort of patients with flail arm syndrome (FAS) by clinical examination and neurophysiological tests such as triple stimulation technique (TST) and pectoralis tendon reflex testing.Methods: A total of 130 consecutive FAS patients from Peking University Third Hospital underwent physical examination and neurophysiological tests at baseline and 3 months, 6 months, 9 months, and 12 months later. Pyramidal signs, pectoralis tendon reflex and TST results were evaluated to estimate the function of cervical spinal UMNs.Results: At the first visit, weakness of the bilateral proximal upper limbs was found in 99 patients, while weakness of a single proximal upper limb was found in 31 patients. There were 49 patients with tendon hyperreflexia, 42 patients with tendon hyporeflexia and 39 patients with tendon areflexia. All except 4 of the patients had brisk pectoralis tendon reflex. The UMN score of the cervical region was 1.7 ± 0.4, and the lower motor neuron score of that region was 3.5 ± 0.3. The TSTtest/TSTcontrol amplitude ratio was 65.7 ± 7.5%. The latency of quantitative detection of the pectoralis tendon reflex was 7.7 ± 1.2 ms. In the follow-up study, the UMN score and the TSTtest/TSTcontrol amplitude ratio decreased, while the lower motor neuron score increased, and the latency of quantitative detection of the pectoralis tendon reflex remained steady.Conclusion: Although the signs of cervical spinal UMN dysfunction in patients with FAS were often concealed by muscle atrophy in the progression of the disease, TST and pectoralis tendon reflex could reveal it.


Energies ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 6276
Author(s):  
Jarosław Kieliszek ◽  
Joanna Wyszkowska ◽  
Jaromir Sobiech ◽  
Robert Puta

The paper presents research on the electromagnetic hazards related to the flow of electric currents throughout the bodies of employees using portable radios. The values often exceed established limits, which may lead to potential dysfunctions of the body and affect the safety of performed professional duties. The measurements of the electric field (E-field) distribution of a typical commercial portable radio, the limb contact current calculations, and the computer simulations determining a specific absorption rate (SAR) were supplemented with pilot neurophysiological tests. The assessment indicated a large spatial variability of the E-field strength around the devices. The head of the operator and the hand holding the radio were often in the electromagnetic field (EMF), which exceeded the established limits. The calculated SAR values ranged within the permitted limits. The conducted neurophysiological tests showed no effects of EMF exposure in comparison to the control group. The assessment of exposure to the EMF using a portable radio is initially performed by analyzing external measures: both computer simulations and measurements of workers’ limb currents. The SAR values exclude thermal effects; however, they do not eliminate potential neuromuscular effects. More neurophysiological tests are needed to obtain a broader picture of possible health effects.


2020 ◽  
pp. 104-104
Author(s):  
Jelena Stamenovic ◽  
Biljana Zivadinovic ◽  
Vanja Djuric ◽  
Srdjan Ljubisavljevic

Background / Aim. In spite of continuous research efforts, specific laboratory, neuropsychological or neurophysiological tests for the diagnosis of Parkinson?s disease have not been established. The aims of the paper are to determine the nature and extent of visual pathway disorders on ?pattern? electroretinogram and visual evoked potentials in certain stages of Parkinson's disease. Methods. The study was carried out in a group of 60 persons of both sexes, who were suffering from idiopathic Parkinson's disease at the I-IV stage of the disease according to the Hoehn and Yahr scale, and 30 healthy persons in the control group. The battery of non-invasive neurophysiological tests was used to estimate the functional status of the visual pathway: "pattern" electroretinography (PERG) and visual evoked potentials (VEP). Results. In the early phase of PB there is a linear increase in the latency of the wave N50 of the "pattern" electroretinogram and the wave P100 of the visual evoked potentials with significant extension of the latency of the N50 and P100 waves in subsequent stages of Parkinson's disease. Diagnostic application of the "pattern" electroretinography and visual evoked potentials enables the confirmation of a disorder in the visual pathway function in Parkinson's disease. Conclusions. These neurophysiological techniques may record early changes in the function of retinal structures and the optic nerve in PD, which might be significant both from the diagnostic and therapeutic aspects.


2019 ◽  
Vol 130 (7) ◽  
pp. e59
Author(s):  
Aleksandra Gergont ◽  
Sławomir Kroczka ◽  
Marek Kaciński

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