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Dorsal ulnar cutaneous nerve conduction: reference values.

Solange G Garibaldi1, Anamarli Nucci

  • 1Department of Neurology, Campinas University, Campinas, SP, Brazil.

Arquivos De Neuro-Psiquiatria
|July 20, 2002
PubMed
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This study establishes reference values for dorsal ulnar cutaneous nerve (DUC) sensory nerve conduction (SNC) in healthy adults. Findings reveal distinct age-related effects on SNC in males versus females, with higher SNAP amplitude in females.

Area of Science:

  • Neurology
  • Neurophysiology
  • Clinical Electrophysiology

Background:

  • Establishing normative data for nerve conduction studies is crucial for diagnosing peripheral neuropathies.
  • The dorsal ulnar cutaneous nerve (DUC) is an important sensory nerve in the upper limb, but its reference values are not widely established.
  • Understanding age and sex differences in DUC nerve conduction parameters is essential for accurate clinical interpretation.

Purpose of the Study:

  • To determine the reference values for dorsal ulnar cutaneous nerve (DUC) sensory nerve conduction (SNC) in a healthy adult population.
  • To investigate potential differences in DUC-SNC parameters between genders.
  • To explore the influence of age on DUC-SNC parameters in both males and females.

Main Methods:

Related Experiment Videos

  • Sixty-six healthy individuals underwent DUC-SNC measurements.
  • Stimulating electrodes were placed 11-13 cm proximal to the active recording electrode.
  • Superficial recording electrodes were positioned on the fourth intermetacarpal space.

    • Main Results:

    • Mean sensory conduction velocity (SCV) was 63.7 - 0.16 x age m/s in males and 57.7 m/s in females.
    • Mean sensory nerve action potential (SNAP) amplitude was 19.5 microV in males and 24.6 microV in females.
    • SNAP amplitude was significantly higher in females than males. Age effects on SCV differed between genders.

    Conclusions:

    • This study provides normative reference values for DUC-SNC.
    • Female subjects exhibited higher SNAP amplitudes compared to males.
    • Age significantly impacts DUC-SCV, with gender-specific patterns observed.