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Related Experiment Videos

Variability of quantitative sensory testing: implications for clinical practice.

J Redmond1, D Cros, B T Shahani

  • 1Department of Neurology, Henry Ford Hospital, Detroit, MI 48202.

Henry Ford Hospital Medical Journal
|January 1, 1990
PubMed
Summary
This summary is machine-generated.

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New quantitative sensory testing methods evaluate unmyelinated nerve fibers, crucial for understanding peripheral neuropathy. The Marstock method offers a reliable reference range and demonstrates acceptable variability for clinical use.

Area of Science:

  • Neuroscience
  • Clinical Electrophysiology

Background:

  • Conventional nerve conduction studies primarily assess large, myelinated nerve fibers.
  • Unmyelinated and thinly myelinated fibers, the majority in human cutaneous nerves, are typically unevaluated.
  • New quantitative techniques are needed to assess these smaller fiber types for comprehensive electrodiagnosis.

Purpose of the Study:

  • To establish a reference range for quantitative sensory testing in healthy subjects.
  • To evaluate the variability of these measurements on repeated testing.
  • To assess the clinical utility of the Marstock method for routine electrodiagnostic use.

Main Methods:

  • Quantitative sensory testing, including vibration and thermal thresholds, was performed bilaterally on 20 healthy subjects.

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  • Measurements were taken at multiple sites and repeated over intervals of two days to three months.
  • The Marstock method was employed for data acquisition and analysis.

    • Main Results:

    • No significant differences were observed between left and right sides, but substantial site-specific differences were noted.
    • Intraindividual variation was considerable, yet within the expected range for psychophysiological testing.
    • A strong correlation between measurements at the same and different sites indicated significant interindividual variation.

    Conclusions:

    • The Marstock method provides a reliable reference range for quantitative sensory testing.
    • The technique demonstrates acceptable intra- and interindividual variability for clinical application.
    • The Marstock method is recommended for routine clinical use in electrodiagnosis, particularly for assessing small nerve fibers.