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Wrist – Digit II, Palm – Digit II

Surface Recording Technique, Antidromic Study
  • Giuliano Gentili
  • Mario Di Napoli
Chapter

Original Settings

Sensitivity was 10 μV/division, low-frequency filter was 20 Hz, high-frequency filter was 5 kHz, sweep speed was 1 ms/division, and the machine used was a Dantec Counterpoint. Duration of pulse and rate of pulse were not specified.

Position

This study was performed in the supine position.

Recording

Following the antidromic method [ 1], signals were recorded from digit II (index finger) using ring electrodes. The active electrode (A) was placed around the base of digit II; the reference (R) was placed 4 cm distally, on the same finger (Fig. 1). Ground (G) electrode was placed on the dorsum of the hand (the authors used 3 cm disk electrode). The figure shows the ground electrode positioned on the palm.

References

  1. 1.
    Lesser EA, Venkatesh S, Preston D et al (1995) Stimulation distal to the lesion in patients with carpal tunnel syndrome. Muscle Nerve 18:503–507PubMedCrossRefGoogle Scholar
  2. 2.
    Di Guglielmo G, Torrieri F, Repaci M et al (1997) Conduction block and segmental velocities in carpal tunnel syndrome. Electroencephalogr Clin Neurophysiol 105:321–327PubMedCrossRefGoogle Scholar
  3. 3.
    Bland JDP (2000) A neurophysiological grading scale for carpal tunnel syndrome. Muscle Nerve 23:1280–1283PubMedCrossRefGoogle Scholar

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Giuliano Gentili
    • 1
  • Mario Di Napoli
    • 1
  1. 1.Neurological ServiceS. Camillo de’ Lellis General HospitalRietiItaly

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