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Palm to Distal Forearm – Digit II

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

Original Settings

Sensitivity was 50 μV/division, low-frequency filter was 20 Hz, high-frequency filter was 2 kHz, sweep speed was 1 ms/division, and the machine used was a specially designed amplifier with a short blocking time (1 ms) and low noise (0.5-μV RMS at bandwidth of 2 kHz). Duration of pulse was 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 (Fig. 1). The active electrode (A) was placed around the proximal interphalangeal joint of digit II; the reference (R) was placed on the distal interphalangeal joint of the same finger. Ground (G) electrode was placed around the forearm (author used a Velcro strap).

Keywords

Median Nerve Nerve Conduction Study Great Efficiency Conduction Time Distal Forearm 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. 1.
    Kimura J (1979) The carpal tunnel syndrome: localization of conduction abnormalities within the distal segment of the median nerve. Brain 102:619–635PubMedCrossRefGoogle Scholar
  2. 2.
    Nathan PA, Meadows KD, Doyle LS (1988) Sensory segmental latency values of the median nerve for a population of normal individuals. Arch Phys Med Rehabil 69:499–501PubMedGoogle Scholar
  3. 3.
    Nathan PA, Keniston RC, Meadows KD et al (1993) Predictive value of nerve conduction measurements at the carpal tunnel. Muscle Nerve 16:1377–1382PubMedCrossRefGoogle Scholar
  4. 4.
    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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