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Nerve Conduction Velocity

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41. A comparison of the effects of agricultural pesticide uses on peripheral nerve conduction in China Full Text available with Trip Pro

described by the reduced velocity. Moreover, the use of organonitrogen compounds by farmers would not only increase risk of demylination disease but axonal damages described by the reduced amplitude. By contrast, agricultural uses of organosulfur and pyrethroid compounds would not induce the abnormalities of farmers' peripheral nerve conduction. The findings demonstrated the importance of developing health-friendly pesticides to replace organophosphorus and organonitrogen insecticides and fungicides (...) A comparison of the effects of agricultural pesticide uses on peripheral nerve conduction in China Evidence on the adverse effects of agricultural pesticide use by farmers under the actual field conditions on their peripheral nerve conduction in China is limited. This study was to investigate the association of agricultural pesticide use with the abnormalities of farmers' peripheral nerve conduction based on two rounds of conventional nerve conduction studies. The level of pesticide exposure

2018 Scientific reports

42. Use of Nerve Conduction Velocity to Assess Peripheral Nerve Health in Aging Mice. Full Text available with Trip Pro

Use of Nerve Conduction Velocity to Assess Peripheral Nerve Health in Aging Mice. Nerve conduction velocity (NCV), the speed at which electrical signals propagate along peripheral nerves, is used in the clinic to evaluate nerve function in humans. A decline in peripheral nerve function is associated with a number of age-related pathologies. While several studies have shown that NCV declines with age in humans, there is little information on the effect of age on NCV in peripheral nerves in mice (...) . In this study, we evaluated NCV in male and female C57Bl/6 mice ranging from 4 to 32 months of age. We observed a decline in NCV in both male and female mice after 20 months of age. Sex differences were detected in sensory NCV as well as the rate of decline during aging in motor nerves; female mice had slower sensory NCV and a slower age-related decline in motor nerves compared with male mice. We also tested the effect of dietary restriction on NCV in 30-month-old female mice. Dietary restriction prevented

2014 Biological Sciences and Medical Sciences

43. Vibration upshot of operating mechanical sewing machine: an insight into common peroneal nerve conduction study Full Text available with Trip Pro

to control group. Similarly, the motor nerve conduction velocity (MNCV) of common peroneal nerves of both right [(43.72 ± 3.25 vs. 47.49 ± 4.17), P < 0.001] and left [(42.51 ± 3.82 vs. 46.76 ± 4.51), P < 0.001] legs was also found to be significantly reduced in study group in comparison to control group.Operating mechanical sewing machine by paddling chronically and arduously could have attributed to abnormal nerve conduction study parameters due to vibration effect of the machine on right and left (...) Vibration upshot of operating mechanical sewing machine: an insight into common peroneal nerve conduction study Most of the people associated with tailoring occupation in Nepal are still using mechanical sewing machine as an alternative of new technology for tailoring. Common peroneal nerves of both right and left legs are exposed to strenuous and chronic stress exerted by vibration and paddling of mechanical sewing machine.The study included 30 healthy male tailors and 30 healthy male

2017 Annals of occupational and environmental medicine

44. Diabetic Neuropathy Evaluated by a Novel Device: Sural Nerve Conduction Is Associated with Glycemic Control and Ankle–Brachial Pressure Index in Japanese Patients with Diabetes Full Text available with Trip Pro

this novel device.We conducted a retrospective observational study in patients with diabetes whose sural nerve functions were measured using DPN Check between January 2015 and October 2016. Multiple and logistic regression analyses were conducted to assess the associations of sural nerve conduction velocity (SNCV) and amplitude (SNAP) with clinical parameters related to DN.A total of 740 patients were enrolled in this study. At baseline, 211 patients were diagnosed with DN by using DPN Check (...) Diabetic Neuropathy Evaluated by a Novel Device: Sural Nerve Conduction Is Associated with Glycemic Control and Ankle–Brachial Pressure Index in Japanese Patients with Diabetes Currently, no international diagnostic criteria for diabetic neuropathy (DN) have been established. Recently, a novel point-of-care sural nerve conduction device has been developed. We aimed to investigate associations between DN and clinical parameters related to the development and progression of DN by using

2017 Frontiers in endocrinology

45. Normative Data for Median Nerve Conduction in Healthy Young Adults from Punjab, India Full Text available with Trip Pro

participants (150 males and 140 females), aged 17-21 years, as per standardized protocol. The data were analyzed separately for both genders using SPSS version 20. It consisted of distal latencies and conduction velocities of motor and sensory divisions of median nerve. Student's unpaired t-test was used for statistical analysis.There was no effect of gender on any of the median nerve conduction parameters. Height and weight had nonsignificant negative and positive correlation, respectively (P > 0.05 (...) ), with conduction velocity in both motor and sensory median nerves. For median motor nerve, the values of distal latency and conduction velocity in males were 2.9 ± 0.16 ms and 60.25 ± 2.99 m/s, respectively, whereas, in females, they were 2.6 ± 0.43 ms and 59.83 ± 2.82 m/s. Similarly, for median sensory nerve, the latency and velocity values in males were 2.8 ± 0.56 ms and 54.81 ± 3.70 m/s, whereas, in females, they were 2.4 ± 0.33 ms and 54.56 ± 3.65 m/s, respectively.The data in this study compared favorably

2017 Journal of neurosciences in rural practice

46. Optimal Radial Motor Nerve Conduction Study Using Ultrasound in Healthy Adults Full Text available with Trip Pro

Optimal Radial Motor Nerve Conduction Study Using Ultrasound in Healthy Adults To obtain reference values, to suggest optimal recording and stimulation site for radial motor nerve conduction study (RmNCS), and to analyze the correlation among RmNCS parameters, demographics and ultrasonography (US) findings.A total of 55 volunteers participated in this study. We hypothesized that 'lateral edge of spiral groove (A)' was the optimal stimulation site, and the 'largest cross-sectional area (CSA (...) , respectively, at the spiral groove, and velocity between elbow and spiral groove was 73.7±7.0 m/s. RmNCS parameters correlated significantly with height, weight, arm length, and CSA of the EIP muscle. Spiral groove ratio and EIP ratio were 0.338±0.03 and 0.201±0.03, respectively; both values were almost the same, regardless of age, sex and handedness.We established a reference value and standardized method of RmNCS using US. Optimal RmNCS can be conducted by placing the recording electrode 20% (about one

2017 Annals of rehabilitation medicine

47. [Effects of penetrating acupuncture on peripheral nerve conduction velocity in patients with diabetic peripheral neuropathy: a randomized controlled trial]. (Abstract)

[Effects of penetrating acupuncture on peripheral nerve conduction velocity in patients with diabetic peripheral neuropathy: a randomized controlled trial]. 19284959 2014 01 23 2009 03 16 1672-1977 7 3 2009 Mar Zhong xi yi jie he xue bao = Journal of Chinese integrative medicine Zhong Xi Yi Jie He Xue Bao [Effects of penetrating acupuncture on peripheral nerve conduction velocity in patients with diabetic peripheral neuropathy: a randomized controlled trial]. 273-5 Chen Yue-lai YL Dept (...) Diabetic Neuropathies physiopathology therapy Female Humans Male Middle Aged Neural Conduction 2009 3 17 9 0 2009 3 17 9 0 2014 1 24 6 0 ppublish 19284959 jcim20090314

2014 Zhong xi yi jie he xue bao = Journal of Chinese integrative medicine Controlled trial quality: uncertain

48. Efficacy and safety of methylcobalamin, alpha lipoic acid and pregabalin combination versus pregabalin monotherapy in improving pain and nerve conduction velocity in type 2 diabetes associated impaired peripheral neuropathic condition. [MAINTAIN]: Results Full Text available with Trip Pro

Efficacy and safety of methylcobalamin, alpha lipoic acid and pregabalin combination versus pregabalin monotherapy in improving pain and nerve conduction velocity in type 2 diabetes associated impaired peripheral neuropathic condition. [MAINTAIN]: Results 25506182 2014 12 16 2018 11 13 0972-2327 17 4 2014 Oct Annals of Indian Academy of Neurology Ann Indian Acad Neurol Efficacy and safety of methylcobalamin, alpha lipoic acid and pregabalin combination versus pregabalin monotherapy in improving (...) pain and nerve conduction velocity in type 2 diabetes associated impaired peripheral neuropathic condition. [MAINTAIN]: Results of a pilot study. 480-1 10.4103/0972-2327.144048 Vasudevan D D The Brain Spine and Nerve Centre, Chennai, Tamil Nadu, India. Naik Manoj M MM Medical Services, Abbott Healthcare Pvt. Limited, Mumbai, Maharashtra, India. Mukaddam Qayum I QI Medical Services, Abbott Healthcare Pvt. Limited, Mumbai, Maharashtra, India. eng Journal Article India Ann Indian Acad Neurol 101273955

2014 Annals of Indian Academy of Neurology

49. Efficacy and safety of methylcobalamin, alpha lipoic acid and pregabalin combination versus pregabalin monotherapy in improving pain and nerve conduction velocity in type 2 diabetes associated impaired peripheral neuropathic condition. [MAINTAIN]: Results Full Text available with Trip Pro

Efficacy and safety of methylcobalamin, alpha lipoic acid and pregabalin combination versus pregabalin monotherapy in improving pain and nerve conduction velocity in type 2 diabetes associated impaired peripheral neuropathic condition. [MAINTAIN]: Results To assess whether methylcobalamin and alpha lipoic acid (ALA) added to pregabalin provide additional benefit compared to pregabalin alone in type 2 diabetes mellitus associated peripheral neuropathy.An open label, randomized, controlled (...) parallel-group pilot study.Thirty adult patients with type 2 diabetes mellitus with symptoms of peripheral neuropathy for ≥6 months were randomized to receive pregabalin 75 mg, methylcobalamin 750 μg, and ALA 100 mg (PMA, n = 15); or pregabalin 75 mg (PG, n = 15) for 12 weeks. Assessment variables were numeric rating scale (NRS), sleep interference scores (SIS), response rate to pain, and global assessment for the usefulness of therapy. The nerve conduction velocity was assessed for sensory and motor

2014 Annals of Indian Academy of Neurology Controlled trial quality: uncertain

50. The relationship between nerve conduction velocity and fiber morphology during peripheral nerve regeneration Full Text available with Trip Pro

The relationship between nerve conduction velocity and fiber morphology during peripheral nerve regeneration We analyzed the relationship between motor nerve conduction velocity (MCV) and morphological changes in regenerating nerve fibers at different times after sciatic nerve transection to identify reliable indices of functional recovery. Thirty rats were divided into five equal groups, one control group and four groups subjected to sciatic nerve transection and immediate suturing, followed (...) by regeneration for 50, 100, 150, and 200 days, respectively. MCV was measured in each group, followed by morphometric analyses of fibers of the common peroneal nerve. MCV increased progressively with time after nerve transection, although it remained lower than the control velocity. Mean fiber diameter (axon plus myelin sheath) also increased with time after nerve transection. Recovery of mean fiber diameter was well correlated with MCV, even though regenerating nerves likely contained many small

2012 Brain and behavior

51. Peripheral Motor and Sensory Nerve Conduction following Transplantation of Undifferentiated Autologous Adipose Tissue-Derived Stem Cells in a Biodegradable U.S. Food and Drug Administration-Approved Nerve Conduit. (Abstract)

and sensory nerve conduction velocity were assessed. Nerves were removed and examined by hematoxylin and eosin, van Gieson, and immunohistochemistry (S100 protein) staining for the quality of axonal regeneration.Nerve gaps treated with adipose tissue-derived stem cells showed superior nerve regeneration, reflected by higher motor and sensory nerve conduction velocity values. The motor and sensory nerve conduction velocity were significantly greater in nerves treated with conduits preseeded with adipose (...) tissue-derived stem cells than in nerves treated with conduits alone (p < 0.05). Increased S100 immunoreactivity was detected for the adipose tissue-derived stem cell group. In this group, axon arrangement inside the conduits was more organized.Transplantation of adipose tissue-derived stem cells significantly improves motor and sensory nerve conduction velocity in peripheral nerve gaps. Preseeded conduits showed a more organized axon arrangement inside the conduit in comparison with nerve conduits

2016 Plastic and reconstructive surgery

52. Evaluation of sural nerve automated nerve conduction study in the diagnosis of peripheral neuropathy in patients with type 2 diabetes mellitus Full Text available with Trip Pro

. Exclusion criteria were B12 depletion, alcohol abuse and other causes of peripheral neuropathy. The reference method was the Neuropathy Disability Score (NDS) with a threshold NDS ≥ 3. Sural nerve automated NCS was carried out with the portable NC-stat DPNCheck device. Sensory nerve conduction velocity and sensory nerve action potential amplitude were measured bilaterally. Automated NCS was considered abnormal when ≥ 1 of the two aforementioned neurophysiological parameters was abnormal in at least one (...) Evaluation of sural nerve automated nerve conduction study in the diagnosis of peripheral neuropathy in patients with type 2 diabetes mellitus New tests for improved diagnosis of diabetic peripheral neuropathy (DPN) are useful.We evaluated the utility of automated nerve conduction study (NCS) of the sural nerve with a new portable device for the diagnosis of DPN in patients with type 2 diabetes mellitus (T2DM). This study included 114 T2DM patients (58 men) with mean age 64.60 ±8.61 years

2016 Archives of medical science : AMS

53. Comparison of the Nerve Conduction Parameters in Proximally and Distally Located Muscles Innervated by the Bundles of Median and Ulnar Nerves Full Text available with Trip Pro

ulnaris, pronator teres and the flexor carpi radialis muscles to the distally located abductor digiti minimi and abductor pollicis brevis muscles for the ulnar and median nerves. Each nerve was stimulated at the region above the elbow and at the axillary region separately. The Student t test was used for statistical analysis, and Levene's test was used to assess whether or not the group variances exhibited a uniform distribution.The conduction velocities were faster (78.27 ± 6.55 vs. 67.83 ± 6.76 m/s (...) in distal muscles (p < 0.001). There was no significant difference (p > 0.05) between males and females regarding conduction velocities and CMAP amplitudes recorded from proximal and distal muscles.Proximal muscles innervated by median or ulnar nerves had lower CMAP amplitude values, longer CMAP durations and higher conduction velocities than distal muscles. These findings could reveal a temporal dispersion and phase cancellation due to desynchronized conduction during nerve stimulation.© 2016 S. Karger

2016 Medical Principles and Practice

54. The diagnostic sensitivity of Auditory Brainstem Response (ABR) test and nerve conduction velocity (NCV) test in MucoPolySaccharidosis (MPS): a systematic review and meta-analysis

The diagnostic sensitivity of Auditory Brainstem Response (ABR) test and nerve conduction velocity (NCV) test in MucoPolySaccharidosis (MPS): a systematic review and meta-analysis Print | PDF PROSPERO This information has been provided by the named contact for this review. CRD has accepted this information in good faith and registered the review in PROSPERO. CRD bears no responsibility or liability for the content of this registration record, any associated files or external websites. Email (...) no). For stratified analyses, a minimum number of 8 studies per subgroup is required. ">Subgroup analyses A sensitivity analysis is conducted to assess the impact of decisions taken in the review process on the meta-analysis outcome. These decisions may have been made in various stages of the review, e.g. the decision to exclude certain disease models, the decision to pool certain units of measurement for an outcome, the choice of effect measure, how subgroup variables are stratified etc. In order to assess

2016 PROSPERO

55. Symptoms, signs and nerve conduction velocities in patients with suspected carpal tunnel syndrome. Full Text available with Trip Pro

Symptoms, signs and nerve conduction velocities in patients with suspected carpal tunnel syndrome. To inform the clinical management of patients with suspected carpal tunnel syndrome (CTS) and case definition for CTS in epidemiological research, we explored the relation of symptoms and signs to sensory nerve conduction (SNC) measurements.Patients aged 20-64 years who were referred to a neurophysiology service for investigation of suspected CTS, completed a symptom questionnaire (including hand (...) . The largest differences in SNC velocities occurred in hands with extensive numbness or tingling in the median nerve sensory distribution and both Tinel's and Phalen's tests positive (mean 13.8, 95% confidence interval (CI) 12.6-15.0 m/s). Hand pain and thumb weakness were unrelated to SNC velocity.Our findings suggest that in the absence of other objective evidence of median nerve dysfunction, there is little value in referring patients of working age with suspected CTS for nerve conduction studies

2013 BMC Musculoskeletal Disorders

56. Effect of Limb Lengthening on Internodal Length and Conduction Velocity of Peripheral Nerve Full Text available with Trip Pro

Effect of Limb Lengthening on Internodal Length and Conduction Velocity of Peripheral Nerve The influences of axon diameter, myelin thickness, and internodal length on the velocity of conduction of peripheral nerve action potentials are unclear. Previous studies have demonstrated a strong dependence of conduction velocity on internodal length. However, a theoretical analysis has suggested that this relationship may be lost above a nodal separation of ∼0.6 mm. Here we measured nerve conduction (...) not significantly altered by limb lengthening. Despite the substantial increase in internodal length, no significant change was detected in conduction velocity (∼43 m/s) measured either in vivo or in isolated tibial nerves. The results demonstrate that the internode remains plastic in the adult but that increases in internodal length of myelinated adult nerve axons do not result in either deficiency or proportionate increases in their conduction velocity and support the view that the internodal lengths

2013 The Journal of Neuroscience

57. Effect of Parathyroid Hormone and Uremia on Peripheral Nerve Calcium and Motor Nerve Conduction Velocity Full Text available with Trip Pro

Effect of Parathyroid Hormone and Uremia on Peripheral Nerve Calcium and Motor Nerve Conduction Velocity Peripheral neuropathy is not an uncommon complication of chronic uremia. Because parathyroid hormone, by raising brain calcium, is partly responsible for central nervous system aberrations in uremia, we studied the relative role of uremia, per se, and(or) parathyroid hormone on peripheral nerve calcium and motor nerve conduction velocity (MNCV). Studies were made in six groups of six dogs (...) each, as follows: (a) normal dogs, (b) thyroparathyroidectomized (T-PTX) animals, (c) dogs with 3 days of uremia produced by bilateral nephrectomy, (d) T-PTX before the induction of acute renal failure, (e) normal dogs receiving 100 U/day of parathyroid extract (PTE) for 3 days, and (f) normal animals receiving 3 days of PTE followed by 5 days without PTE. Calcium content in peripheral nerve (expressed as milligram per kilogram of dry weight) was 252+/-5 (SE) in normal animals and 262+/-4 in T-PTX

1978 Journal of Clinical Investigation

58. Specific changes in conduction velocity recovery cycles of single nociceptors in an erythromelalgia patient with the I848T gain-of-function mutation of NaV1.7. (Abstract)

Specific changes in conduction velocity recovery cycles of single nociceptors in an erythromelalgia patient with the I848T gain-of-function mutation of NaV1.7. Seven patients diagnosed with erythromelalgia (EM) were investigated by microneurography to record from unmyelinated nerve fibers in the peroneal nerve. Two patients had characterized variants of sodium channel Nav1.7 (I848T, I228M), whereas no mutations of coding regions of Navs were found in 5 patients with EM. Irrespective of Nav1.7 (...) mutations, more than 50% of the silent nociceptors in the patients with EM showed spontaneous activity. In the patient with mutation I848T, all nociceptors, but not sympathetic efferents, displayed enhanced early subnormal conduction in the velocity recovery cycles and the expected late subnormality was reversed to supranormal conduction. The larger hyperpolarizing shift of activation might explain the difference to the I228M mutation. Sympathetic fibers that lack Nav1.8 did not show supranormal

2015 Pain

59. Normative values for short-segment nerve conduction studies and ultrasonography of the ulnar nerve at the elbow. (Abstract)

Normative values for short-segment nerve conduction studies and ultrasonography of the ulnar nerve at the elbow. In patients with ulnar neuropathy at the elbow (UNE), short-segment nerve conduction studies (NCS) are rarely performed due to unclear reference values. We excluded controls with subclinical UNE, calculated normative values, and tested them in UNE patients.Clinical examination, ultrasonography (US), and 2-cm short-segment ulnar motor NCS across the elbow were performed in 49 controls (...) and 67 UNE patients. In controls, subclinical UNE was diagnosed if at least 2 studies were outside the reference limits in the same 2-cm segment.Exclusion of controls with subclinical UNE produced less stringent normative values (2-cm conduction velocity: 25 to 31 m/s; US cross-sectional area: 11.6 to 9.6 mm2), which raised diagnostic sensitivity (short-segment NCS: 76% to 90%; 10-cm NCS: 72% to 85%, US: 43% to 79%).We propose the use of our normative values in patients with clinically definite

2015 Muscle & nerve

60. Nerve Conduction Velocity

Nerve Conduction Velocity Nerve Conduction Velocity Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Nerve Conduction Velocity Nerve (...) Conduction Velocity Aka: Nerve Conduction Velocity , Nerve Conduction Studies , Nerve Conduction Study II. Indication Tests integrity of peripheral nerve myelin and axon Differentiates causes Distribution (single nerve or diffuse involvement) See Causes (e.g. ) (e.g. ) Component of nerve involved (see below) al or axonal EMG slowed out of proportion to nerve conduction Demyelinating or infiltrative Nerve conduction slowed out of proportion to EMG III. Interpretation Axonal (EMG slowed more than NCS

2015 FP Notebook

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