Relevant bibliographies by topics / Nerve conduction velocity (NCV)

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Academic literature on the topic 'Nerve conduction velocity (NCV)'

Author: Grafiati
Published: 4 June 2025
Last updated: 23 June 2025

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Journal articles on the topic "Nerve conduction velocity (NCV)"

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Ananya, Debbarma, and C. Mehta Neeta. "A STUDY TO COMPARE NERVE CONDUCTION VELOCITIES IN DOMINANT AND NONDOMINANT HANDS OF ADULTS." International Journal of Basic and Applied Physiology 7, no. 1 (2018): 75–80. https://doi.org/10.5281/zenodo.4481499.

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Background and Objectives: Nerve Conduction Velocity(NCV) study is a part of Clinical Neurophysiology. Nerve Conduction Study is a test commonly used to evaluate the functions of the motor and sensory nerves of the body. It has emerged as a major tool for diagnosis of nerve function disorders. Handedness also known as chirality is a human nature due to unequal distribution of fine motor skills between the left and right hands. The aim was to compare the NCV between left handed and right handed subjects using median, ulnar and radial nerve and find out whether there is any difference in NCV(motor or sensory) with handedness. Method: The Nerve conduction study was performed on a RMS EMG EPMK II Electrophysiology machine. Motor and sensory NCV of the median, ulnar and radial nerves in the left and right upper limbs was compared in 50 right and 50 left handed subjects of both gender between 18 to 40 years. Result: Data analysis was performed through standard statistical methods. Median motor NCV was higher in right handed subjects. Sensory NCV were higher in left handed subjects Conclusion: Different range of values of motor and sensory nerve conduction velocity for left and right handed persons.
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Dipti, Thakker, J. Shah N, and Trivedi R.S. "TO STUDY THE EFFECT OF BMI ON NERVE CONDUCTION VELOCITY." TO STUDY THE EFFECT OF BMI ON NERVE CONDUCTION VELOCITY 8, no. 1 (2019): 73–77. https://doi.org/10.5281/zenodo.4485084.

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<strong>Background &amp; objectives:</strong> Age, height and weight are the physiological factors which influence the nerve conduction velocity. Obesity is a growing public health concern and it is associated with various disorders. Body mass index (BMI) is an important parameter to measure obesity. Present study is an effort to determine relationship between nerve conduction velocity of median, ulnar and radial nerves and obesity in healthy individuals. <strong>Methods:</strong> In the present study the effect of Body Mass Index (BMI) on Median, Ulnar and Radial motor and sensory nerve conduction velocities of healthy individuals is compared. Standardized protocol was followed while execution nerve conduction study in all the subjects. <strong>Results</strong>: Comparison of NCV findings with BMI shows the values of median motor, ulnar motor, median sensory, ulnar sensory and radial sensory nerves of left hand and median motor, median sensory, ulnar sensory and radial sensory nerve conduction velocities of right hand are significantly reduced (p value &lt; 0.05) in obese individual as compared to normal weight individuals. <strong>Interpretation &amp; conclusion</strong>: The findings of our study suggest that there is significant correlation with NCV and BMI. People with higher BMI have reduction in NCV of various motor and sensory nerves. This could be due to thicker subcutaneous tissue in persons with higher BMI.
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Kunipuri, Sarala, Pavani R., Devasena Indla., and Lakshmi S. "Nerve Conduction Studyin Type 2 Diabetic Patients." International Journal of Pharmaceutical and Clinical Research 15, no. 12 (2023): 895–98. https://doi.org/10.5281/zenodo.11194224.

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Nerve conduction velocity (NCV) test measures the speed of conduction of an electrical impulse through a nerve. The NCV test can establish nerve damage and devastation. Nerve conduction studies (NCS) are regularly conducted to identify the neuropathy. This study will help to observe the difference in nerve conduction velocity between non diabetic and type II diabetic individuals. The present study was undertaken for a period of&nbsp;&nbsp; subjects, both males and females aged between 40-50 years, informed written consent was taken from the subjects. The study group consisted of 25 diabetic patients, with history of diabetes for 1-10 years and controls (Non Diabetics) were 30 age and sex matched healthy individuals.&nbsp; Comparison of sensory nerve parameters in Control Group (non diabetics) and diabetics shows&nbsp; there is highly significant slowing of sensory nerves median &amp; ulnar (p&lt;0.001) and decrease in amplitude of Median nerve(p&lt;0.05) in diabetics compared to controls. The study proved neuronal involvement in the diabetes mellitus which is accelerated by poor glycaemic control. Therefore nerve conduction studies should be carried out for the early detection and management of neuropathy in the diabetic patients. &nbsp; &nbsp;
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Priyanka, Abhishek Kumar, and Prasad Anjali Krishna. "Survey of body mass index (BMI) on median motor nerve conduction velocity (NCV) in normal population of Malwa region." Indian Journal of Clinical Anatomy and Physiology 10, no. 2 (2023): 104–7. http://dx.doi.org/10.18231/j.ijcap.2023.022.

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: Nerve conduction studies reveal technique to work on peripheral nerve being capable in revealing nerve-related issue. It aids in distinguishing from a nerve injury to situation where muscles are affected due to a nerve lesion. While, in that respect much dissimilarity persist in use of Nerve Conduction Velocity (NCV) in different nerves with regard to place, sex, mass &amp; other ethnographical facts i.e. Span of life. This has been viewed in performing nerve conduction studies while ethnograpical part differs for different geological region.: The purpose of present work is to do the Nerve Conduction Variables (NCV) studies in rt. median nerve in usual well young of Malwa region and to study the outcome of B.M.I on it. : A total 110 healthy participants from the periods of 20 and 50 years, with none nerve lesion, being examined at IMCHRC, Indore. All trial were completed on JAVA RMSAleron-201 series. Scrutiny on SPSS 10.0 series. : The mean of NCV firstly rises among periods of 20-30 yrs, 31-40 yrs &amp; 40-50years, preceded by a fall in the mean NCV of elbow–wrist segment which significantly fall while the mean of B.M.I rises with increasing length of life. It is to be noted that NCV was inversely related to an increase in B.M.I in the volunteer the mean NCV of Set 1 &amp;#62; Set2, Set3, Set 4 with P &amp;#60; 0.05 that toply relevant.Usual parameter for conduction in peripheral nerves to be used in the test of peripheral nerve lesion. B.M.I has a definitive effect on NCV. So, this factor has been put into concern during interpretation of results during nerve conduction studies. Therefore, it should also be used for research purposes &amp; in prognosis approach.
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Maurya, Lavkush, Shraddha Singh, and S. C. Chaudhary. "Impact of Type 2 Diabetes Mellitus Duration on Sural Nerve Conduction Velocity: A Cross-Sectional Study." International Journal of Health Sciences and Research 14, no. 9 (2024): 225–31. http://dx.doi.org/10.52403/ijhsr.20240929.

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Objective: To evaluate the nerve conduction velocity (NCV) of the sural nerve in patients with Type 2 Diabetes Mellitus (T2DM) and compare it with healthy controls, focusing on the impact of the disease's duration on NCV. Methods: This cross-sectional study included 90 T2DM patients divided into two groups based on disease duration (&lt;5 years and &gt;10 years) and 45 healthy controls. Sural nerve NCV was measured using an Octopus NCV/EMG/EP machine. Statistical analysis was performed using SPSS. Results: The NCV of the sural nerve was significantly lower in T2DM patients compared to controls (p&lt;0.001). NCV decreased significantly with increasing duration of diabetes, showing a reduction of approximately 1.80 m/s per year for the left sural nerve and 1.97 m/s per year for the right sural nerve. Conclusions: Prolonged T2DM is associated with a significant reduction in sural nerve conduction velocity, indicating progressive nerve damage. Early diagnosis and management are crucial to prevent severe neuropathic complications. Key words: Nerve Conduction Velocity, Sural Nerve, Type 2 Diabetes Mellitus, Diabetic Neuropathy
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Prashant, Praveen, Sat Pal, Abhishek Bansal, and Sanjay Fotedar. "Nerve conduction velocity studies in diabetic peripheral neuropathy involving sural nerve—A meta-analysis." Journal of Family Medicine and Primary Care 13, no. 10 (2024): 4469–75. http://dx.doi.org/10.4103/jfmpc.jfmpc_304_24.

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ABSTRACT Introduction: Diabetes mellitus (DM) poses a significant health burden globally, impacting millions due to its metabolic disruptions. Among its complications, diabetic peripheral neuropathy (DPN) is a prevalent concern, affecting sensory and motor nerves. While various diagnostic methods exist, discrepancies persist in prevalence estimates of DPN among diabetic populations. Objective: This meta-analysis aimed to assess the prevalence of DPN in individuals with DM, focusing on sural nerve conduction velocity (NCV) measurements. Additionally, the study explored how different evaluation techniques influenced prevalence estimates. Methods: A systematic literature search was conducted following PRISMA guidelines across multiple databases. Studies reporting sural nerve NCV measurements in diabetic patients were included. Data extraction, quality assessment, and statistical analyses were performed to synthesize findings. Results: Twenty-six studies met the inclusion criteria, providing insights into sural nerve NCV among diabetic individuals. Pooled analysis revealed a mean sural nerve NCV of 42.12 m/s (95% CI: 39.87-44.36), indicative of reduced conduction velocity in diabetic populations. Furthermore, sural nerve amplitude was significantly lower in diabetic individuals, with a pooled mean of 4.68 μV (95% CI: 3.11-6.25). Conclusion: Individuals with type 2 DM exhibit impaired sural nerve function, as evidenced by reduced NCV and amplitude measurements. Timely NCV assessment, alongside glycemic monitoring, is crucial for identifying and managing DPN to prevent further complications. Interventions addressing glycemic control, dietary regulation, and lifestyle modifications are recommended to mitigate the progression of neuropathy in diabetic populations.
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Reed, T. Edward, and Arthur R. Jensen. "Arm nerve conduction velocity (NCV), brain NCV, reaction time, and intelligence." Intelligence 15, no. 1 (1991): 33–47. http://dx.doi.org/10.1016/0160-2896(91)90021-5.

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Bhavna, Gupta, Batham Chhaya, Waghmare Shilpa, and Verma Pratibha. "Nerve Conduction Velocity and Effect of Different Phases of Menstrual Cycle on it." International Journal of Pharmaceutical and Clinical Research 15, no. 6 (2023): 1779–84. https://doi.org/10.5281/zenodo.12516558.

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<strong>Objective:&nbsp;</strong>The study was done to find out the effect of different phases of menstrual cycle on the Nerve conduction velocity in females.&nbsp;<strong>Methods:&nbsp;</strong>50 normal menstruating women with age between 18 to 24 years, with regular menstrual cycle were randomly selected from the nearest nursing college hostel and were included in the study. Evoked electromyogram (EMG) was used to measure the nerve conduction velocity of median nerve in all the three phases of menstrual cycle i.e. proliferative, secretory and menstrual phase. Their mean values were calculated and compared in all the three phases.&nbsp;<strong>Results:</strong>&nbsp;When the mean of nerve conduction velocities in different phases of menstrual cycle were compared, a decrease in the NCV was observed in the secretory phase as compared to the menstrual and proliferative phase but the p value was not significant.&nbsp;<strong>Conclusion:</strong>&nbsp;Nerve conduction velocity of the peripheral nerves does not vary significantly during the different phases of the menstrual cycle. However these parameters should be kept in mind while conducting studies on nerve conduction velocities. &nbsp; &nbsp; &nbsp;
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Nobue, Ayaka, and Masaki Ishikawa. "Sex-Specific Differences in Peripheral Nerve Properties: A Comparative Analysis of Conduction Velocity and Cross-Sectional Area in Upper and Lower Limbs." Diagnostics 14, no. 23 (2024): 2711. https://doi.org/10.3390/diagnostics14232711.

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Background/Objectives: Peripheral nerve conduction velocity (NCV) and nerve cross-sectional area (nCSA) are crucial parameters in neurophysiological assessments, yet their sex-specific differences are not fully understood. This study investigated sex-based variations in NCV and nCSA between upper and lower limbs. Methods: Twenty participants (ten males and ten females) were recruited for this study. The NCV and nCSA of the ulnar and tibial nerves were measured in both the upper and lower limbs. NCV was measured using supramaximal electric stimulation, and nCSA was assessed using peripheral nerve ultrasonography at three regions for each nerve. Supramaximal electric stimulations were applied superficially to the ulnar and tibial nerves at each measurement point. Action potentials were recorded from the abductor digiti minimi and soleus muscles for the ulnar and tibial nerves, respectively. Results: The ulnar nCSA of the upper limbs was significantly greater in males than in females (p &lt; 0.05). However, ulnar NCV was significantly higher in females than in males (p &lt; 0.05). In the lower limbs, no sex differences were observed in tibial NCV or nCSA. Conclusions: These findings reveal sex-specific differences in upper limb peripheral nerve characteristics that may have important implications for clinical assessments and treatment strategies. The contrasting patterns between upper and lower limbs suggest that both developmental and functional factors influence peripheral nerve properties.
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Almuklass, Awad M., Abdulmajeed Mansour Alassaf, Rakan F. Alanazi, Turki Rashed Alnafisah, Thamir Ali Alrehaily, and Yaser Al Malik. "Nerve conduction, latency, and its association with hand function in young men." PLOS ONE 19, no. 9 (2024): e0310813. http://dx.doi.org/10.1371/journal.pone.0310813.

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Introduction The median and ulnar nerves have been suggested to play a significant role in hand function; however, there are insufficient data to determine the strength of this association. This study aimed to investigate the correlation between hand function as measured with the Grooved pegboard test (GPT) and conduction velocity and latency of the median and ulnar nerves. Methods We collected convenience samples in the College of Medicine, KSAU-HS. We used GPT to characterize hand function and performed measured nerve conduction velocity (NCV) and latency of the ulnar and median nerves of both hands. We used the Edinburgh handedness inventory (EHI) to determine hand dominance. Results We recruited 28 healthy medical students aged 20–29 years (mean: 21.46 ± 1.62 years). Most were right-handed (n = 25, 89.3%), with a mean EHI score of 302 ± 210. The mean GPT time was significantly faster in the dominant (65.5 ± 6.4 s) than in the non-dominant (75.0 ± 9.6 s) hand. The NCV for the ulnar nerve of the dominant hand was significantly correlated with GPT (r = -0.52, p = 0.005) while median nerve was not correlated (0.24, p = 0.21). Regression analysis and collinearity test showed that the ulnar NCV explained 20% of the variance in GPT of the dominant hand (R2 = 0.203, p = 0.016). Conclusion The ulnar nerve conduction velocity, explained 20% of the variance in GPT times of the young men. Performance on this biomarker of neurological health seems to be more influenced by other factors in healthy young individuals.
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Dissertations / Theses on the topic "Nerve conduction velocity (NCV)"

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Wells, Martin David 1969. "Estimation of peripheral nerve conduction velocity distributions from a short segment of nerve." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/86557.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.<br>Includes bibliographical references (p. [285]-[293]).<br>by Martin David Wells.<br>Ph.D.
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Neu, Elin. "Nervus medianus påverkan av olika hudtemperaturer. : En jämförelse av hur conduction velocity och peaklatenstiden påverkas av olika hudtemperaturer, mätt med ENeG, SCV." Thesis, Örebro universitet, Institutionen för hälsovetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-84607.

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Introduktion: Vid perifera nervundersökningar med elektroneurografi spelar temperaturen i vävnaden som undersöks stor roll. Kall vävnad leder till försämrad funktion i nervernas jonkanaler, vilket leder till att aktionspotentialer utlöses långsammare och nervledningshastigheten minskar vilket därmed kan ge falskt patologiska undersökningsresultat. För att minska den risken mäts och korrigeras alltid hudtemperaturen. Vid registrering från övre extremiteter mäts hudtemperaturen standardmässigt på handryggen. Trots att stimulering sker från handflatan och från fingrar så mäts inte temperaturen där. Syftet med studien är därför att undersöka om kalla fingrar på en i övrigt varm hand påverkar conduction velocity och peaklatenstiden, jämfört med när hand och fingrar har samma varma temperatur. Metod: 30 unga, friska personer deltog i studien. Ortodrom elektroneurografiundersökning utfördes på nervus medianus sensoriska del. Handryggstemperaturen var konstant 32° Celsius (C) och fingertoppstemperaturerna var 32° C, 27° C respektive 22° C. Vid varje fingertoppstemperatur registrerades conduction velocity och peaklatenstiden vid stimuleringar från handflatan, fingerbasen och fingertoppen på digitorum III. Resultat: En statistiskt signifikant skillnad fanns i både nervledningshastigheten och peaklatenstiden vid registrering från fingerbasen vid fingertoppstemperaturen 32° C jämfört med såväl 27° C som 22° C. Slutsats: Kalla fingrar på en varm hand ger en statistiskt signifikant påverkan på både nervledningshastigheten och peaklatenstiden.<br>Background: In peripheral nerve examinations with electroneurography, temperatures in the tissue that is being examined is important. Cold tissue leads to impaired function of the ion channels of the nerves, which causes action potentials to be triggered more slowly and the nerve conduction velocity to decrease, which can cause false pathological examination results. To reduce this risk, the skin temperature is always measured and corrected. When registering from the upper extremities, the skin temperature is measured by default on the back of the hand. Despite stimulating in the palm and on the fingers, the temperature is not measured there. The purpose of the study is to investigate whether cold fingers on a warm hand affects the conduction velocity and peak latency time, compared with the hand and the fingers having the same warm temperature. Methods: 30 young, healthy persons participated in the study. An orthodrome electroneurography examination was performed on the sensory part of the median nerve. The backhand temperature was constant 32° Celsius (C) and the fingertip temperatures were 32 ° C, 27 ° C and 22 ° C. Results: A statistically significant difference was found in both nerve conduction velocity and peak latency time when registering from the finger base with fingertip temperature 32 ° C compared with both 27 ° C and 22 ° C Conclusions: Cold fingers on a warm hand give a statistically significant effect on both the nerve conduction velocity and the peak latency time.
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Chroni, Elisabeth. "F chronodispersion and F tacheodispersion : a study of conduction properties of motor nerve fibres in normal and pathological conditions." Thesis, King's College London (University of London), 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320463.

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Vaughan, Parker Andrew. "Electrophysiology of Optic Nerves in Methylglyoxal Treated Mice." Wright State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wright1590769538838536.

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Ahmed, Saif. "HCN1 Immunoreactivity of α-motoneurons Following Peripheral Nerve Injury". Wright State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=wright1340820984.

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Lagerkvist, Birgitta Json. "Systemic effects of occupational exposure to arsenic : with special reference to peripheral circulation and nerve function." Doctoral thesis, Umeå universitet, Klinisk fysiologi, 1989. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-101288.

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Smelter workers who were exposed to air-borne arsenic for a mean of 23 years, and age-matched referents, were examined with clinical, physiological, and neurophysiological methods. Exposure to arsenic in workroom air was estimated to have been around the Swedish occupational limits, which were 500 yg/m before 1975 and 50 yg/ra thereafter. An increased preval ence of Raynaud's phenomenon and a reduced finger systolic blood pressure (FSP) during local and general cooling were found in the smelter workers. Slight, but significant sub-clinical neuropathy, in the form of slightly reduced nerve conduction velocity (NCV) in two or more peripheral nerves, was more common among the arsenic workers than among the referents. There were positive correlations between cumulative exposure to arsenic, reduced NCV in three peripheral motor nerves, and decrease in FSP during cooling. Arsenic levels in urine were 1 ymole/1 (75 yg/1) in the arsenic workers and 0.1 ymole/1 in the referents. In 21 arsenic workers with no or very low exposure to vibra ting hand tools, the FSP during cooling had increased significantly after 3 years wit h the lower arsenic exposure. There was no change in FSP during the summer vacation, whereas urinary levels of arsenic decreased to normal values. Thus there seems to be a slow improvement of finger blood circ ulation which is independent of short-term fluctuations in the exposure to arsenic. No seasonal variation was found in FSP during cooling with the standardized method used. When the NCV-measurements were repeated five years later the difference between arsenic workers and referents had increased, despite the fact that 14 of the 47 arsenic workers had had no exposure to arsenic during the last 1-5 years. These observations indicate, that in subjects with long term exposure to arsenic, sub-clinical neuropathy is not reversible. Ten milligrams of Ketanserin, a serotonin receptor antagonist, was given intravenously to five arsenic workers with cold-induced vasospasm. Skin temperature and FSP during cooling increased significantly with Ketanserin as compared wit h saline solution. After oral treatment, 2 x 40 mg /day for four weeks, no significant increase of FSP during cooling or rise in skin temperature was found in six arsenic workers and eleven patients with Raynaud's phenomenon. The decrease of vasospastic tendency after intravenous injection of Ketanserin indicated that similar mechanisms might operate in arsenic-induced and other types of Raynaud's phenomenon. A general co nclusion from the five studies in this dissertation is that long-term occupational exposure to arsenic has had adverse effects on the peripheral circulation and nerve conduction. The tendency to vasospasm, but not the sub-clinical neuropathy, seemed to be reversible with decreasing exposure.<br><p>S. 1-54: sammanfattning, s. 55-112: 5 uppsatser</p><br>digitalisering@umu
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VAZQUEZ, JORGE ARTURO. "NERVE FIBER DIAMETER MEASUREMENTS USING HEMATOXYLIN AND EOSIN STAINING AND BRIGHTFIELD MICROSCOPY TO ASSESS THE NOVEL METHOD OF CHARACTERIZING PERIPHERAL NERVE FIBER DISTRIBUTIONS BY GROUP DELAY." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1293.

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Peripheral neuropathies are a set of common diseases that affect the peripheral nervous system, causing damage to vital connections between various parts of the body and the brain and spinal cord. Different clinical conditions are known to selectively impact various size nerve fibers, which often makes it difficult to diagnose which peripheral neuropathy a patient might have. The nerve conduction velocity diagnostic test provides clinically useful information in the diagnosis of some peripheral neuropathies. This method is advantageous because it tends to be minimally invasive yet it provides valuable diagnostic information. However, this test does not determine characteristics of peripheral nerve fiber size distributions, and therefore does not show any detailed information regarding the nerve fibers within the nerve trunk. Being able to determine which nerve fibers are contributing to the evoked potential within a nerve trunk could provide additional information to clinicians for the diagnosis of specific pathologies of the peripheral nervous system, such as chronic inflammatory demyelinating polyneuropathy or early diabetic peripheral neuropathy. In this study, three rat sciatic nerves are sectioned and stained with hematoxylin and eosin in order to measure the nerve fiber diameters within the nerve trunk. Stained samples are viewed using brightfield microscopy and images are analyzed using ImageJ. Histograms were created to show the frequency of various nerve fiber diameters. The nerve fiber diameters measured during this research are consistent with the range of previously published diameter values and will be used to support continuing research for a novel method to characterize peripheral nerve fiber size distributions using group delay.
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Villabona, Esperanza Herrera. "Confiabilidade dos testes de condução nervosa; efeitos da crioterapia na condução nervosa sensorial e motora." Universidade Federal de São Carlos, 2010. https://repositorio.ufscar.br/handle/ufscar/1224.

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Made available in DSpace on 2016-06-02T19:22:05Z (GMT). No. of bitstreams: 1 3198.pdf: 3159049 bytes, checksum: 5e8ac93b5a62ff5a959370c795dac4e9 (MD5) Previous issue date: 2010-09-03<br>This thesis presents three manuscripts derived of two research projects that were developed during the doctorate program. Project 1. Purpose: To determine the interand intra-rater reliability of nerve conduction studies (NCS) of superficial peroneal, sural and medial plantar nerves. Methods: Two raters performed the bilateral NCS twice in 20 healthy participants (23.5±3.5 years). Reliability was analyzed by the Bland- Altman method and intraclass correlation coefficient (ICC). Results: The Bland-Altman method showed a good level of intra- and inter-rater agreement for all parameters nerves. The amplitude and latency of the medial plantar nerve (rater 1), as well the amplitude of the sural nerve (rater 2) had an intra-rater ICC &#8805;0.75. Inter-rater analysis showed concordance levels between moderate and very low. Project 2. Purposes: a) To compare the effects of three cold modalities on the nerve conduction parameters of the sural (sensory) and tibial (motor) nerves during cooling and post-cooling phases b) To analyze the effect of exercise on recovery of sensory and motor nerve conduction velocity (NCV). Methods: Thirty six healthy young subjects (20.5±1.9 years) were randomly allocated into three groups: ice massage (n=12), ice pack (n=12) and cold water immersion (n=12). Each group received 1 of the 3 cold modalities on the right calf region for 15 minutes. The subjects of each modality group were again randomized to perform a post-cooling activity (30 min rest or walk 15 min followed by rest 15min). Nerve conduction parameters of sural and posterior tibial nerves were evaluated. Results: All 3 modalities reduced amplitude and increased latency and duration of the compound action potential. Ice massage, ice pack, and cold water immersion reduced NCV by 20.4, 16.7, and 22.6 m/s and motor NCV by 2.5, 2.1, and 8.3 m/s, respectively. Cold water immersion, as applied in this study, was the most effective modality in changing nerve conduction parameters. The walk accelerated the recovery of sensory and motor NCV, regardless of the modality previously applied (p<0.0001). Conclusions: The NCS provides quantitative measures that contribute to the objective analysis of neural physiological effects of cryotherapy. All 3 modalities were effective in altering sensory and motor nerve conduction. However, the magnitude and duration of these effects depend on the method applied and the activity after cooling.<br>Esta tese apresenta três manuscritos derivados de dois projetos de pesquisa que foram desenvolvidos no doutorado. Projeto 1. Objetivo: Avaliar a confiabilidade intra e interavaliador dos testes de condução nervosa (TCN) nos nervos sural, peroneal superficial e plantar medial. Métodos: Dois examinadores realizaram duas vezes os TCN bilaterais em 20 participantes saudáveis (23,5±3,5 anos). A confiabilidade foi analisada pelo método de Bland-Altman e o coeficiente de correlação intraclasse (ICC). Resultados: O método de Bland-Altman indicou um bom nível de concordância intra e inter-avaliador para todos os parâmetros dos TCN. Foram observados ICC intra-avaliador &#8805; 0,75 para amplitude e latência do nervo plantar medial (avaliador 1) e para a amplitude do nervo sural (avaliador 2). A análise inter-avaliador mostrou níveis de concordância entre moderados e muito baixos. Projeto 2. Objetivos: a) Comparar os efeitos de três modalidades de crioterapia sobre os parâmetros de condução dos nervos tibial posterior (motor) e sural (sensorial) durante as fases de resfriamento e pós-resfriamento b) Analisar o efeito do exercício físico na recuperação da velocidade de condução nervosa (VCN) sensorial e motora. Métodos: Trinta e seis sujeitos jovens e saudáveis (20,5±1,9 anos) foram alocados aleatoriamente em três grupos: criomassagem (n=12), pacote de gelo (n=12); imersão em água gelada (n=12). Cada grupo recebeu uma das 3 modalidades de resfriamento na panturrilha direita, durante 15 min. Os sujeitos de cada grupo foram novamente aleatorizados para realizar uma atividade pós-resfriamento (30min de repouso ou 15min de marcha seguido de 15min de repouso). Avaliaram-se os parâmetros de condução nos TCN dos nervos sural e tibial posterior. Resultados. As três modalidades reduziram a amplitude e aumentaram a latência e duração do potencial de ação composto. Criomassagem, pacote de gelo e imersão em água gelada reduziram a VCN sensorial em 20,4, 16,7 e 22,6 m/s, e a VCN motora em apenas 2,5, 2,1 e 8,3 m/s, respectivamente. Imersão em água gelada, como usada neste estudo, foi a modalidade mais eficaz para alterar os parâmetros de condução nervosa. A marcha acelerou a recuperação da VCN sensorial e motora, independente da modalidade previamente aplicada (P<0,0001). Conclusões. Os TCN fornecem medidas quantitativas que subsidiam análises objetivas e úteis na avaliação dos efeitos fisiológicos neurais da crioterapia. As 3 modalidades de resfriamento foram eficazes para alterar a condução sensorial e motora. Contudo, a magnitude e duração desses efeitos dependem do tipo de modalidade usada e da atividade que se realiza após o resfriamento.
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Lernman, Julia. "Perifer nervpåverkan av måttlig fysisk aktivitet : En studie om huruvida fysisk aktivitet har någon påverkan på de perifera nervernas funktion, mätt med elektroneurografi." Thesis, Örebro universitet, Institutionen för hälsovetenskaper, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-92990.

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Introduktion: Elektroneurografi används för att bedöma nervfunktion och påvisa patologiska förändringar i det perifera nervsystemet. Det är en metod känslig för störningar och registreringarna kan påverkas av temperaturen i huden och underliggande vävnad, då värme ökar de perifera nervernas nervledningshastighet.   Fysisk aktivitet har bevisats ha positiva effekter på hälsan och involverar många av kroppens organsystem. En sådan effekt är en ökad metabolism i skelettmusklerna, vilket genererar värme.   Syfte och frågeställning: Syftet är att undersöka de perifera nerverna i en nedre extremitet hos en grupp neurologiskt friska individer utan diagnosticerad diabetes med elektroneurografi, för att se om fysisk aktivitet har någon effekt på den perifera nervfunktionen.   Metod och material: Tre perifera nerver i individernas (n=18) dominanta ben; nervus (n) suralis, n. peroneus och n. tibialis undersöktes med elektroneurografi före och efter måttlig fysisk aktivitet. N. suralis undersöktes sensoriskt och n. peroneus och n. tibialis undersöktes motoriskt och F-respons registrerades. Hudtemperatur och kroppstemperatur mättes inför samtliga registreringar och ansträngningsgrad vid den fysiska aktiviteten uppskattades.   Resultat: Signifikant skillnad mellan registreringarna från n. suralis kunde ses vad gäller latenstid och ledningshastighet, och den distala amplituden, proximala latenstiden samt ledningshastigheten för n. peroneus. Dessutom kunde signifikant skillnad ses i den proximala latenstiden för n. tibialis, och i F-M-latenstiden för n. peroneus och n. tibialis.   Slutsats: En positiv effekt kan ses i en del variabler, troligtvis beroende på temperaturskillnaderna mellan registreringarna. Dock skulle en större undersökningsgrupp potentiellt ge tydligare resultat.<br>Introduction: Electroneurography is used to assess nerve function and detect pathological changes in the peripheral nerve system. The method is sensitive to interference and measurements can be affected by temperature of the skin and underlying tissue, because heat increases nerve conduction velocity of the peripheral nerves.   It has been concluded that physical activity have a positive effect on health and involves many of the body´s organsystems. One of these effects is an increase in metabolism in skeletal muscles, which generates heat.   Purpose: The purpose is to examine the peripheral nerves in a lower extremity in a group of neurologically healthy individuals without diagnosed diabetes with electroneurography, to determine if physical activity has any effect on the peripheral nerve function.   Method and material: Three peripheral nerves in the individuals (n=18) dominant leg; nervus (n) suralis, n. peroneus and n. tibialis, were examined with electroneurography before and after moderate physical activity. N. suralis were examined for sensory function and n. peroneus and n. tibialis were examined for motor function and F-response. Skin temperature and body temperature were measured before every registration and the individuals assessed their degree of physical effort.   Results: Significant diffrence between the registrations could be seen in the latency and conduction velocity for n. suralis, in the distal amplitude, proximal latency and conduction velocity for n. peroneus, in the proximal latency for n. tibialis and the F-M-latency for n. peroneus and n. tibialis.   Conclusion: A positive effect can be seen on some variables, probably because of temperature diffrences between the registrations. However a larger test group could potentially yield more distinct results.
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Mendonça, Fabiana Sarilho de. "Avaliação da atividade eletromiográfica do músculo trapézio em indivíduos saudáveis pré e pós irradiação com laser baixa potência: estudo cruzado, controlado, randomizado duplo cego." Universidade Nove de Julho, 2015. http://bibliotecatede.uninove.br/handle/tede/1804.

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Submitted by Nadir Basilio (nadirsb@uninove.br) on 2018-06-19T13:41:01Z No. of bitstreams: 1 Fabiana Sarilho de Mendonca.pdf: 960484 bytes, checksum: be95fe89cc95556dccc9a63e7868ac13 (MD5)<br>Made available in DSpace on 2018-06-19T13:41:01Z (GMT). No. of bitstreams: 1 Fabiana Sarilho de Mendonca.pdf: 960484 bytes, checksum: be95fe89cc95556dccc9a63e7868ac13 (MD5) Previous issue date: 2015-12-15<br>Although the low level light therapy (LLLT) irradiation is indicated for a variety of musculoskeletal disorders like muscle fatigue, tissue repair and as anti-inflammatory agent, its effects on muscle activity are still poorly understood. The objective of this study was to evaluate the immediate effect of LLLT of irradiation on the nerve conduction velocity and electromyographic activity of the muscle upper trapezius (UT) in healthy subjects. Twenty healthy women (mean age 23.54  2.51) were included in this study, cross-over, controlled, randomized, double blind. Each volunteer has received two types of treatment with continuous LLLT (LLLT) and the other one with LLLT placebo (LLLTP). The treatment order was randomized by raffle, being included an interval of 7 days between each laser intervention (wash-out) to prevent residual effects. The surface electromyography (EMG) was used to verify the nerve conduction velocity (CV) and muscle activity UT during shoulder elevation in isometric contraction to 5 different levels of contraction (10, 15, 20, 25, 30% of maximum voluntary contraction), via visual feedback provided through a driving line. The collects of the EMG signal were performed before and after 30 minutes of treatment (LLLT or LLLTP). In the analysis of variance for repeated measures (ANOVA) it was possible to observe a significant decrease in the amplitude of the EMG signal to treatment with LLLT (p = 0.0001) but not to the placebo treated group (p < 0.05). Regarding of the CV, no change was observed for both treatments (LLLT: p > 0.05; LLLTP: p > 0.05 - ANOVA). In this study it could be observed an immediate effect of LLLT irradiation on the amplitude of the electromyographic signal of the trapezius muscle descending fibers in healthy individuals, but not on the nerve conduction velocity.<br>Embora a irradiação com laser de baixa potência (LBP) seja indicada para vários tipos de disfunções musculoesqueléticas como fadiga muscular, reparo tecidual e como agente anti-inflamatório, seus efeitos sobre a atividade muscular ainda são pouco conhecidos. O objetivo desse estudo foi avaliar o efeito imediato da irradiação do LBP sobre a velocidade de condução nervosa e a atividade eletromiográfica do músculo trapézio fibras descendentes (TFD) em indivíduos saudáveis. Vinte mulheres saudáveis (idade média: 23,54  2,51) foram incluídas nesse estudo, cruzado, controlado, randomizado duplo cego. Cada voluntária recebeu 2 tipos de tratamento com LBP (LBP) contínuo e outra com LBP placebo (LBPP). A ordem de tratamento foi randomizada por sorteio, sendo incluído um intervalo de 7 dias entre cada intervenção de laser (wash-out) para evitar efeitos residuais. A eletromiografia (EMG) de superfície foi utilizada para verificar a velocidade de condução nervosa (VC) e atividade no músculo TFD durante a elevação do ombro em contração isométrica em 5 diferentes níveis de contração (10, 15, 20, 25, 30% da contração voluntária máxima), por meio de feedback visual proporcionado por uma linha de treino. As coletas do sinal EMG foram realizadas antes e após 30 minutos do tratamento (LBP ou LBPP). Na análise de variância para medidas repetidas (ANOVA) foi possível observar diminuição significativa na amplitude do sinal EMG para o tratamento com LBP (p = 0,0001) porém não para o grupo tratado com LBPP (p < 0,05). Em relação à VC, nenhuma alteração foi observada para ambos os tratamentos (LBP: p > 0,05; LBPP: p > 0,05 - ANOVA). Nesse estudo foi possível observar um efeito imediato da irradiação com LBP sobre a amplitude do sinal eletromiográfico do músculo trapézio fibras descendentes em indivíduo saudáveis, porém, não sobre a velocidade de condução nervosa.
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Books on the topic "Nerve conduction velocity (NCV)"

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A, DeLisa Joel, and DeLisa Joel A, eds. Manual of nerve conduction velocity and clinical neurophysiology. 3rd ed. Raven Press, 1994.

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1950-, Mackenzie Keith, Baran Ernest M, and DeLisa Joel A, eds. Manual of nerve conduction velocity and somatosensory evoked potentials. 2nd ed. Raven Press, 1987.

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Nisargandha, Milind Abhimanyu, and Shweta Dadarao Parwe. Basic Concept of Nerve Conduction Velocity and Electromyography. Scholars' Press, 2016.

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The relationship between tibial nerve conduction velocity and selected strength and power variables in college football linemen. 1985.

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Pitt, Matthew. Nerve physiology. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780198754596.003.0003.

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The chapter begins with a description of the normal findings in healthy sensory and motor nerves. The distribution of nerve fibres by diameter in the sensory nerve and its effect on the recorded action potential is outlined. The method by which velocity and compound muscle action potential are derived from motor stimulation follows. H-reflex studies and F-wave identification are described. A section on the strategies used for nerve conduction study in children and the nerves chosen for examination leads on to a description of the difficulties of deriving normative data in children. Next follows a detailed description of the findings in both sensory and motor nerves in demyelination where a distinction between patchy and homogenous demyelination is possible. An analysis of the nerve findings in axonal degeneration is then presented. The chapter finishes with a discussion of the variability in nerve testing.
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Fuglsang-Frederiksen, Anders, Kirsten Pugdahl, and Hatice Tankisi. Quantitative electromyography. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199688395.003.0008.

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Several quantitative electromyography (QEMG) methods are used for diagnosing and monitoring in patients with neuromuscular disorders. At weak effort of the muscle, motor unit potential (MUP) analyses as individual MUP, multi-MUP, and macro-EMG are diagnostically sensitive and well tested. At higher effort of the muscle, interference pattern analyses such as the turns amplitude analysis are also diagnostically sensitive. Other potential diagnostic methods are power spectrum analysis, muscle fibre conduction velocity analysis, and some surface EMG methods. In patients with myopathy, QEMG has an important role in the diagnosis as a supplement to blood tests, muscle biopsy, and genetic testing. In patients with neurogenic disorders such as anterior horn cell disorders, peripheral nerve lesions, or polyneuropathy, QEMG has important roles in characterizing the lesion and differential diagnosis. Furthermore, QEMG may be useful in the examination of patients with neuromuscular transmission failure, critical illness disorders, and in treatment of dystonic muscle with botulinum toxin.
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Book chapters on the topic "Nerve conduction velocity (NCV)"

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Anderson, Vitas, Leigh Davidson, Ken H. Joyner, Andrew W. Wood, Richard Macdonell, and Josie Curatolo. "Nerve Conduction Velocity and Mobile Phones." In Electricity and Magnetism in Biology and Medicine. Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4867-6_178.

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Schneider, I., A. Gunkel, E. Stennert, and W. F. Neiss. "Development of the Nerve Conduction Velocity After Hypoglossal-Facial Nerve Anastomosis: An Electroneurographic Study." In The Facial Nerve. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-85090-5_147.

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Xu, Ke, and Susumu Terakawa. "Three Mechanisms or Strategies for Increasing Conduction Velocity of Nerve Fibers." In Myelinated Fibers and Saltatory Conduction in the Shrimp. Springer Japan, 2013. http://dx.doi.org/10.1007/978-4-431-53924-7_10.

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Dimpfel, W., M. Spüler, and H. U. Tüllner. "Effect of Gangliosides on Nerve Conduction Velocity During Diabetic Neuropathy in the Rat." In Gangliosides and Modulation of Neuronal Functions. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-71932-5_58.

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Kurstjens, G. A. M. "Nerve Conduction Velocity Selective Recording Using a Multi-contact Cuff Electrode – A Case Study of In-Vitro Vagus Nerve Preparation." In IFMBE Proceedings. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21683-1_66.

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"Electrophysiological measurements: Nerve conduction velocity (NCV)." In Measurements in Spine Care, edited by Jens R. Chapman, Michael J. Lee, Joseph R. Dettori, and Daniel C. Norvell. Georg Thieme Verlag, 2012. http://dx.doi.org/10.1055/b-0034-85257.

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Kimura, Jun, and Jeffrey A. Strakowski. "Anatomy and Physiology of the Peripheral Nerve and Types of Nerve Pathology." In Electrodiagnosis in Diseases of Nerve and Muscle, 5th ed., edited by Jun Kimura and Jeffrey A. Strakowski. Oxford University PressNew York, 2025. https://doi.org/10.1093/med/9780197658017.003.0004.

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Abstract This chapter covers the anatomy and physiology of the peripheral nerve and the types of nerve pathology. It discusses the basic anatomy and physiology of the peripheral nerve as they relate to nerve conduction abnormalities. Nerve conduction studies (NCS) show changes closely parallel to the structural abnormalities of the nerve, allowing subdivision of lesions. The chapter then discusses the physiology of nerve conduction, which includes transmembrane potential, propagation of action potential, and conduction velocity. It reviews the three degrees of nerve injury before providing an overview of the types of neuropathic disorders, such as axonal degeneration and segmental demyelination.
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Solanki, Nilay, and Hardik Koria. "Diabetic Neuropathy and Neuroprotection by Natural Products." In Indopathy for Neuroprotection: Recent Advances. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815050868122010013.

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Diabetic neuropathy (DN) is a serious complication in type-1 diabetes and type-2 diabetes. Animal models show many abnormalities like neuropathy, hyperalgesia, allodynia, slow nerve conduction velocity (NCV), and progressive sensory and motor deficit that are associated with diabetic neuropathy. Various risk factors may be involved in causing DN, such as persistent hyperglycemia, microvascular insufficiency, oxidative stress, nitrosative stress, defective neurotrophism and autoimmune-mediated nerve destruction. Many conventional and newer therapeutic approaches are available. Approaches include effective control of glycemia. Symptoms targeted therapies such as antidepressants, SSRIs, anticonvulsants, opiates, NSAIDs and NMDA receptor antagonists. Therapies targeting particular causes include aldose reductase inhibitors, drugs that act on hexosamine pathways, protein kinase C pathways and AGE receptors. Preclinical studies involving pharmacological agents have shown positive results but were withdrawn at the stage of a clinical study, either due to lack of efficacy or due to their side effects on major organs. Medicinal herbal plants are the richest bio-resource of drugs that have been studied extensively for their neuroprotective effects. Various approaches involving neuroprotection by natural products are discussed here.
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"Nerve Conduction Velocity." In Encyclopedia of Evolutionary Psychological Science. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-319-19650-3_301898.

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Misulis, Karl E., and Evan M. Johnson. "Electromyography and Nerve Conduction Studies." In Practical Neurophysics, edited by Karl E. Misulis and Evan M. Johnson. Oxford University PressNew York, 2022. http://dx.doi.org/10.1093/med/9780197578148.003.0007.

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Abstract This chapter discusses the methods of data acquisition via electromyography (EMG) and nerve conduction studies (NCS). Moreover, EMG and NCS are the basic components of neuromuscular diagnostics. Modern EMG equipment features fundamental elements such as recording hardware and software, stimulator, display, and storage. Thus, the digital transformation of EMG allowed for the digital manipulation of the data and improved acquisition. The chapter also expounds on the spectrum of normal and abnormal responses in NCV and EMG such as compound motor action potential (CMAP), denervation of muscle, and axonal neuropathy. It explains the sensory conductions, motor conductions, and EMG of Guillain-Barre syndrome, carpal tunnel syndrome, muscular dystrophy, and myasthenia gravis.
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Conference papers on the topic "Nerve conduction velocity (NCV)"

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Strathdee, James, Ding Hii, Victor Fung, and Matthew Silsby. "3141 Determining ethnic differences in nerve conduction velocity." In ANZAN Annual Scientific Meeting 2024 Abstracts. BMJ Publishing Group Ltd, 2024. http://dx.doi.org/10.1136/bmjno-2024-anzan.121.

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Tepe, Cengiz, and Ilyas Eminoglu. "Programmable current source and nerve conduction velocity experimental setup." In 2016 Medical Technologies National Congress (TIPTEKNO). IEEE, 2016. http://dx.doi.org/10.1109/tiptekno.2016.7863091.

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Méndez, Ma C. "Motor Nerve Conduction Velocity Depends on Stimuli Frequency in the Rat." In MEDICAL PHYSICS: Seventh Mexican Symposium on Medical Physics. AIP, 2003. http://dx.doi.org/10.1063/1.1615129.

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Siam, Zakaria Shams, Rubyat Tasnuva Hasan, Mohammad Abu Sayem Karal, M. A. Masud, and Zaid Bin Mahbub. "Analysis of Continuous Motor Nerve Conduction Velocity Distribution from Compound Muscle Action Potential." In 2020 11th International Conference on Electrical and Computer Engineering (ICECE). IEEE, 2020. http://dx.doi.org/10.1109/icece51571.2020.9393039.

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Grüner, M. R., E. West, D. l'Allemand, et al. "A Novel Digital Biomarker on the Impact of Glucose Fluctuations on Nerve Conduction Velocity in Pediatric T1D." In NEP 49th Annual Meeting of the Society for Neuropediatrics 2024. Georg Thieme Verlag KG, 2024. http://dx.doi.org/10.1055/s-0044-1791922.

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Khoshnevis, Sepideh, and Kenneth R. Diller. "Cryosurgery Causes Profound and Persistent Ischemia." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80635.

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Cryotherapy has been used in the treatment of soft tissue trauma and other ailments since the time of Hippocrates. Currently it is commonly applied in conjunction with surgical procedures and by athletic trainers and physical therapists to control pain, swelling, bleeding, and inflammation. Localized cooling also results in slowing of the nerve conduction velocity and reduced muscle spasm and secondary hypoxic injury1,2. Cooling is commonly used for soft tissue injuries in combination with rest, compression and elevation to minimize inflammation.
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Gilemkhanova, D. R., L. A. Gaynutdinova, and N. F. Sharifullina. "FEATURES OF POLYNEUROPATHY OCCUPATIONAL ETIOLOGY." In The 4th «OCCUPATION and HEALTH» International Youth Forum (OHIYF-2022). FSBSI «IRIOH», 2022. http://dx.doi.org/10.31089/978-5-6042929-6-9-2022-1-58-62.

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Polyneuropathy (PNP) is a common disease of peripheral nervous system, manifested by symptoms of sensory and motor nerve fibers damage. The main etiological factors of occupational PNP syndrome are physical overload and occupational vibration (local, whole-body – total). When diagnosing PNP, it is necessary to conduct electroneuromyography (ENMG). The article presents the results of developmental conditions and clinical and functional features of occupational PNP study according to 43 patients with occupational PNP examination by Ishteryakova O.A. developed registration card, statistical assessment. All patients underwent ENMG. When assessing the state of sensitive fibers, a decrease in the amplitude of the sensory response to 3.51±0.42μV (with PNP from vibration) and 3.09±0.15μV - with PNP from physical overload was noted. According to ENMG results, statistically significant (p&lt;0.05) decrease in the nerve conduction velocity along the sensitive fibers was established median nerve on both sides in individuals with PNP from physical overload compared with PNP from vibration. When stimulating motor fibers of median nerve at the wrist and in the ulnar region in patients with PNP from vibration, the value of residual latency averaged 2.62±0.9 ms, with PNP from overload - 4.06±0.70 ms. According to work results, it was revealed that changes in ENMG parameters are more pronounced in people with PNP from physical overload.
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Borges, Isabella Sabião, Agnes Laura Silva Neres, Gabriella Louise Constantino Silva, et al. "Description of electroneuromyographic findings in leprosy: confirming a spectral neuropathy." In XIV Congresso Paulista de Neurologia. Zeppelini Editorial e Comunicação, 2023. http://dx.doi.org/10.5327/1516-3180.141s1.696.

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Introduction: Leprosy is the most common cause of peripheral neuropathy, leading to sequelae that perpetuate the stigma linked to the disease. Electroneuromyography (ENMG) is the gold standard to evaluate neural damage, as it can detect even subclinical alterations. Objectives: To describe the electroneuromyographic findings in leprosy patients. Methods: Retrospective analysis of the records from patients with leprosy in a Brazilian Reference Center, between 2014 and 2021. The sensibility conduction of the median, ulnar, radial, sural and peroneal nerves, and motor conduction of the median, ulnar, peroneal and tibial nerves were analyzed. Results: Five hundred and thirteen patients with leprosy submitted to ENMG at the diagnosis were analyzed. The mean age was 45.8 years (±16.6) with 50.1% being male, and multibacillary represented 85.8% of the cases. Of these patients, 71.9% presented neural damage compatible with leprosy. In total, 2,627 damaged nerves were found, with a mean of 7.1 (±5.2) per patient. The most affected sensitive nerve was the superficial peroneal 15.8%, with a mean of 4.4 (±3.3) damaged nerves per patient. The most affected motor nerve was the ulnar 12.9%, with a mean of 2.7 (±2.5) damaged nerves per patient. Between the 369 patients with neural leprosy damage, 19.2% presented with mononeuropathy, while 80.8% presented two or more damaged nerves. Asymmetric sensorimotor axonal neuropathy with focal slowing of conduction velocity was the most common ENMG pattern 53.9%. Conclusion: Leprosy is a spectral disease, therefore, the damage and neurophysiological characteristics can vary according to the clinical presentation. The ENMG pattern confirms that there is a greater involvement of sensitive nerves asymmetrically, mainly axonal, with localized non-uniform myelin damage.
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