scholarly journals Nerve Conduction Studies in Patients with Lumbosacral Radiculopathy Caused by Lumbar Intervertebral Disc Herniation

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Safa Yousif ◽  
Ammar Ahmed ◽  
Ahmed Abdelhai ◽  
Afraa Musa
Keyword(s):  
Nerve Conduction Study ◽  
Nerve Conduction ◽  
Tibial Nerve ◽  
Motor Nerve ◽  
H Reflex ◽  
Nerve Conduction Studies ◽  
Control Group ◽  
Motor Nerve Conduction ◽  
Lumbosacral Radiculopathy ◽  
F Wave

Background. Nerve conduction studies (NCS) are electrodiagnostic tests used to evaluate peripheral nerves functions and aid in the assessment of patients with neuromuscular complaints. There is contrasting evidence concerning the use of NCS in the assessment of patients with lumbosacral radiculopathy. Objectives. This study was conducted to evaluate nerve conduction studies abnormalities in patients with lumbosacral radiculopathy and to find out their relation to abnormal physical examination findings. Materials and Methods. Twenty-seven patients with lumbosacral radiculopathy caused by L4/5 or L5/S1 intervertebral disc prolapse confirmed by magnetic resonance imaging (MRI) were recruited in the study. Twenty-five healthy subjects matched in age and sex served as control. Motor nerve conduction study bilaterally for both common peroneal and tibial nerves, F-wave for both nerves, and H-reflex had been conducted. Results. No significant difference was found in the motor nerve conduction study parameters (latency, amplitude, and conduction velocity) between the patients group and the control group. There was significant prolongation in H-reflex latency of both symptomatic and asymptomatic side in the patients group compared to the control group ( P < 0.05 ). Also, F-wave latencies (F minimum, F maximum, and F mean) of the tibial nerve were significantly prolonged ( P < 0.05 ) compared to control. Conclusion. Prolonged H-reflex latency was the commonest encountered abnormality in our study followed by F-wave latencies of the tibial nerve.

H-reflex and motor nerve conduction studies in growth retarded newborn babies

2008 ◽  
Vol 432 (3) ◽  
pp. 188-192
Author(s):  
Narendra Reddy Dereddy ◽  
Sunil Muthusami ◽  
B.D. Bhatia ◽  
Udai Prakash
Keyword(s):  
Nerve Conduction ◽  
Motor Nerve ◽  
H Reflex ◽  
Nerve Conduction Studies ◽  
Motor Nerve Conduction

scholarly journals Motor nerve conduction study parameters in healthy individuals: effect of limb dominance

2019 ◽  
Vol 7 (4) ◽  
pp. 1330
Author(s):  
Binnam Shakya ◽  
Dilip Thakur ◽  
Bishnu H. Paudel ◽  
Rita Khadka ◽  
Suman Pokhrel
Keyword(s):  
Ulnar Nerve ◽  
Nerve Conduction Study ◽  
Nerve Conduction ◽  
Motor Nerve ◽  
Healthy Individuals ◽  
Motor Nerve Conduction ◽  
Left Handed ◽  
F Wave ◽  
Wave Minimum ◽  
Limb Dominance

Background: Nerve conduction study (NCS) is useful for evaluation of nerve, muscle, and/or neuromuscular function. Neurophysiologist interprets NCS with consideration of various anthropometric and technical parameters viz. age, gender, height, temperature etc. apart from the underlying pathology. Fewer studies have reported the effect of limb dominance on NCS. Moreover, the findings are controversial. Therefore, author aimed to investigate the effect of limb dominance on motor nerve conduction study parameters.Methods: This cross-sectional comparative study included sixty healthy individuals (44 right and 16 left handed) of either sex with age 18 to 30 years. The NCS parameters of median and ulnar nerves were assessed by stimulating it and recording from the muscle and skin overlying the nerve respectively using Digital Nihon Kohden machine. The obtained data were analyzed using independent sample t-test.Results: Right ulnar nerve onset latency was significantly longer in left-handed individuals (1.85±0.508 ms vs 1.62±0.195 ms, p=0.012). The left ulnar nerve F wave minimum latency (25.88±0.74 ms vs 24.46±2.64 ms, p=0.002) was significantly longer in left-handed individuals. Likewise, right ulnar nerve distal latency (2.45±0.76 ms vs 2.14±0.39 ms, p=0.044), and right ulnar nerve F wave minimum (25.9±1.21 ms vs 24.85 ms±1.74, p=0.030) were significantly high in left-handed individuals.Conclusions: NCS parameters in terms of latencies were longer in left-handed individuals. Therefore, limb dominance seems to be an important factor one should pay attention during bilateral comparison of obtained data in neurophysiological reporting of referred cases.

Very Early Neurophysiological Study in Guillain-Barre Syndrome

2018 ◽  
Vol 80 (1-2) ◽  
pp. 100-105 ◽  
Author(s):  
Jiaoting Jin ◽  
Fangfang Hu ◽  
Xing Qin ◽  
Xuan Liu ◽  
Min Li ◽  
...  
Keyword(s):  
Nerve Conduction ◽  
Nerve Conduction Velocity ◽  
Tibial Nerve ◽  
Early Stage ◽  
Motor Nerve ◽  
Sensory Nerve ◽  
Sensory Nerves ◽  
Motor Nerve Conduction ◽  
Abnormal Rate ◽  
Motor Nerves

Purpose: The diagnosis of Guillain-Barre syndrome (GBS) in the very early stage may be challenging. Our aim was to report the neurophysiological abnormalities in GBS within 4 days of clinical onset. We expected that GBS will be diagnosed by the assistance of neurophysiological study in the very early stage. Methods: We prospectively recruited patients with a diagnosis of GBS discharged from First Affiliated Hospital of Xi’an Jiaotong University and Xi Jing Hospital. Patients were classified into 3 groups according to the onset of symptoms to electromyography examination interval (OEI). The neurophysiological findings were carried out using standard procedures. All patients were examined by the same experienced neurophysiologist. Results: There were not significant group differences in abnormal rate, distal motor latency (DML), motor nerve conduction velocity (MNCV), F response (FR), compound muscle action potential (CMAP), conduction block (CB), sensory nerve action potential (SNAP), and sensory nerve conduction velocity among OEI ≤4 days, 4< OEI ≤10 days, and OEI > 10 days groups. Motor nerves were more affected than sensory nerves in neurophysiological presentation in very early stage patients. The difference of motor nerves and sensory nerves was statistically significant in lower limbs, but was not in upper limbs. In motor nerve conduction studies, the abnormal rate of DML, MNCV, FR, CB was more common seen in ulnar and peroneal nerve than median and tibial nerve, the abnormal rate of CMAP was the same in ulnar, median, peroneal and tibial nerve. In sensory nerve conduction studies, the abnormal rate of ulnar nerve and median nerve was higher than the superficial peroneal nerve and sural nerve. The OEI was not correlated with the SNAP decrease rate of median (r = 0.10, p = 0.23) and ulnar (r = 0.26, p = 0.06) but was statistically correlated with sural SNAP decrease rate (r = 0.29, p = 0.04). The sural-sparing pattern phenomenon was the most commonly discovered phenomenon in very early stage patients (OEI ≤4 days), followed by patients with 4< OEI ≤10 days, ultimately found in patients with OEI > 10 days. Conclusions: We suggest performing neurophysiological examination as soon as possible for suspected GBS patients, particularly focusing on multi-spots inspection of ulnar and peroneal nerves, and paying close attention to sural-sparing patterns.

scholarly journals Optimal Radial Motor Nerve Conduction Study Using Ultrasound in Healthy Adults

2017 ◽  
Vol 41 (2) ◽  
pp. 290 ◽  
Author(s):  
Jungho Yeo ◽  
Yuntae Kim ◽  
Sooa Kim ◽  
Kiyoung Oh ◽  
Hyungdong Kang
Keyword(s):  
Nerve Conduction Study ◽  
Nerve Conduction ◽  
Motor Nerve ◽  
Healthy Adults ◽  
Motor Nerve Conduction
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