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Related Experiment Videos

Nerve conduction studies in upper extremities: skin temperature corrections.

E M Halar, J A DeLisa, T L Soine

    Archives of Physical Medicine and Rehabilitation
    |September 1, 1983
    PubMed
    Summary

    Skin and near nerve temperatures significantly correlate with nerve conduction velocity (NCV) and distal latency (DL). Wrist skin temperature best predicts these nerve function measures, suggesting a temperature correction formula for clinical use.

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    Area of Science:

    • Neurology
    • Biophysics

    Background:

    • Nerve conduction studies (NCS) are crucial for diagnosing peripheral nerve disorders.
    • Temperature significantly influences nerve conduction velocity (NCV) and distal latency (DL).
    • Standardized temperature correction is vital for accurate NCS interpretation.

    Purpose of the Study:

    • To investigate the relationship between skin temperature, near nerve (NN) temperature, and NCS parameters (NCV, DL).
    • To determine the optimal site for temperature measurement correlating with NCS.
    • To evaluate the applicability of a temperature correction formula for NCS.

    Main Methods:

    • 34 healthy adults underwent NCS (median and ulnar nerves, motor and sensory) at various temperatures.
    • Skin and NN temperatures were measured at multiple sites (forearm, wrist, palm, fingers).

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  • Subjects were cooled to lower skin temperatures (26-30°C) to assess temperature effects.

    • Main Results:

    • Strong linear correlations were found between skin and NN temperatures (r² range, 0.4-0.84).
    • Both skin and NN temperatures significantly correlated with NCV and DL.
    • Wrist skin temperature demonstrated the highest correlation with NCV and DL.
    • Specific correction factors were derived for median and ulnar nerves based on wrist temperature changes.

    Conclusions:

    • Skin temperature, particularly at the wrist, is a reliable indicator for predicting NCS parameters.
    • A temperature correction formula is proposed for NCS when wrist skin temperature deviates from the normal range (29.6-36.4°C).
    • Accurate temperature assessment and correction are recommended for consistent NCS results in clinical practice.