Median nerve conduction in healthy Nigerians: Normative data

Owolabi, LF; Ss, Adebisi; Bs, Danborno; Buraimoh, AA

doi:10.4103/2141-9248.181839

Cited by 8 publications

(4 citation statements)

References 23 publications

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“…This could be elicited from the work of Takano et al 37 who found that shorter persons have statically significant fast conduction velocity than taller persons. 38 The current study showed that age was also found to influence nerve conduction velocity of the median sensory fibers; as a negative correlation; so that with increasing age; the nerve conduction velocity declines, a finding that collaborates with literature and with Farqad et al, 20 Thakuer et al 22 who further added that age has definite inverse effects on amplitude and duration of motor and sensory nerves signals, a finding that was reestablished by Owolabi LF et al 39 and Letz R et al 40 Our results disagree with Amatya and Khanal 41 who revealed that no significant correlations of NCVs with age, height, weight, and body mass index.…”

Section: Discussionsupporting

confidence: 82%

Normal neurophysiologic parameters of the median nerve among adult healthy Sudanese population

Elmagzoub¹,

Ahmed²,

Hameed³

2020

JNSK

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Background: Nerve conduction studies (NCSs) help in delineating the extent distribution of neural lesion, and the diagnosis of peripheral nerve disorders. Because normative nerve conduction parameters were not yet established in Sudan EMG laboratories, this study aims towards having our own reference values, as we are using the American and British parameters. This will allow avoiding the discrepancies that might be induced by many factors. Methods: NCSs were performed in 200 Median nerves of 100 adult healthy Sudanese subjects using standardized techniques. Results: The median SNAP (sensory nerve action potential) values were as follows: distal latency, 2.6±3 ms with a range of (2.3-2.9); peak latency, 3.5±0.5 ms (3.0-4.0); amplitude, 47.7±18.0μV (29.7-65.7); conduction velocity, 53.0±7.8 m/s (45.2-60.8). The following values were obtained for the Median nerve CMAP (compound muscle action potential) at wrist stimulation: distal latency, 3.5±0.5 ms with a range of (3.0-4.0); peak latency, 9.4± 1.0 ms (8.4-10.4); duration, 5.9±0.9 ms (5.0-6.8); amplitude, 12.3±2.5 mV (9.8-14.8); area, 43.0±10.4 mVms (32.6-53.4); conduction velocity, 63.6±6.2 m/s (57.4-69.8). The F wave was 28.4±1.8 ms (26.6-30.2). Conclusion: The overall mean sensory and motor nerve conduction parameters for the tested nerve compared favorably with the existing literature with some discrepancies that were justified.

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Section: Discussionsupporting

confidence: 82%

Normal neurophysiologic parameters of the median nerve among adult healthy Sudanese population

Elmagzoub¹,

Ahmed²,

Hameed³

2020

JNSK

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“…There is evidence to suggest that nerve conduction slows down with advancing age. [ 3 22 25 27 28 ] Therefore, while the present study was confined to a narrow age group (17–21 years), most of the other researchers had included a large age group (including elderly population) which might have led to the increase in latency values with consequent reduction of the velocity values in their participants, thereby creating discrepancies between their results and our own. Another major reason for the observed differences is that since most of the available studies are western, hence the consequent methodology and geographical differences as well as the variations in the lifestyle, dietary, and morphological characteristics of study participants might also have influenced the study results.…”

Section: Discussionmentioning

confidence: 90%

Normative Data for Median Nerve Conduction in Healthy Young Adults from Punjab, India

Singh

Gupta

Singh

et al. 2017

Journal of Neurosciences in Rural Practice

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Background:Nerve conduction studies (NCSs) are essential for diagnosing various kinds of focal and diffuse neuropathies. Due to the paucity of local NCS data, electrodiagnostic laboratories in Punjab rely on values from Western and other Indian studies.Aim:This study was conducted to provide normative data for median nerve conduction parameters (motor and sensory) in Punjabi populace.Materials and Methods:A cross-sectional study was done on 290 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.Results: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.Conclusion:The data in this study compared favorably with already existing data. It would help the local electrodiagnostic laboratories in assessing the median nerve abnormalities with greater accuracy in this population subset.

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“…[ 1 3 4 5 6 ] It is often most desirable and encouraged in a clinical setting to have reference values that are derived from the same population or from a sample population that approximates, as closely as possible, the demographic characteristics of the patient being tested. [ 3 ] The few reports available on NCS normative values from Nigeria were focused on median[ 7 ] and sural nerves,[ 8 ] but there is no published account on ulnar nerves in the country.…”

Section: Introductionmentioning

confidence: 99%

Normative data for ulnar nerve conduction and the influence of gender and height on ulnar nerve conduction velocity in healthy Nigerians

et al. 2022

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Background: Despite the usefulness of ulnar nerve conduction studies in identifying disorders of ulnar nerves, there is a lack of normative values for the ulnar nerve in Nigerian population. Objective: The objective of the study was to generate normative values for motor and sensory ulnar nerve conduction studies (NCSs) in Nigerian population and to determine the influence of gender and height on ulnar nerve conduction velocity (NCV). Materials and Methods: A total of 200 healthy volunteers were selected after clinical evaluation to exclude common causes of ulnar neuropathy. We carried out NCS of ulnar nerves on all the healthy volunteers according to a standardized protocol. The NCS parameters included in the final analysis were amplitude, latency, NCV, and f-wave latency. Ethical approval was obtained for the study. Results: The mean ulnar nerve sensory velocity was 55.22 ± 5.67 with 2.5 and 97.5 percentile of 46.9 and 70.1, respectively. The mean latency of the ulnar nerve (sensory) was 2.97 ± 0.62 with 2.5 and 97.5 percentile of 2.00 and 4.52, respectively. The mean amplitude of the ulnar nerve (sensory) was 35.56 ± 9.97 with 2.5 and 97.5 percentile of 15.9 and 57.7, respectively). The ulnar NCV was significantly ( P = 0.0202) higher in male. Mild inverse correlation ( r = 0.2) was found between ulnar NCV and height of the participants ( P = 0.0089). Conclusion: In the Nigerian population, normative values of motor and sensory ulnar nerve conduction parameters are similar to the existing values in the literature. The ulnar NCV appeared to be influenced by height and gender.

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Median nerve conduction in healthy Nigerians: Normative data

Cited by 8 publications

References 23 publications

Normal neurophysiologic parameters of the median nerve among adult healthy Sudanese population

Normal neurophysiologic parameters of the median nerve among adult healthy Sudanese population

Normative Data for Median Nerve Conduction in Healthy Young Adults from Punjab, India

Normative data for ulnar nerve conduction and the influence of gender and height on ulnar nerve conduction velocity in healthy Nigerians

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