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Related Experiment Videos

Pudendal nerve terminal sensitive latency: technique and normal values.

G Amarenco1, J Kerdraon

  • 1Service de Reeducation Neurologique, Centre Hospitalier Robert Ballanger, Aulnay-sous-Bois, France.

The Journal of Urology
|February 26, 1999
PubMed
Summary
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A new technique successfully measured pudendal nerve sensory responses in men. This method aids in diagnosing perineal disorders like sexual dysfunction and incontinence.

Area of Science:

  • Neurophysiology
  • Urology
  • Andrology

Background:

  • The pudendal nerve plays a crucial role in perineal sensation and function.
  • Accurate assessment of its terminal sensory branches is vital for diagnosing various disorders.
  • Existing methods for studying the pudendal nerve may have limitations.

Purpose of the Study:

  • To evaluate a novel technique for studying the terminal sensory branches of the pudendal nerve.
  • To assess the feasibility and reliability of this new method in healthy male subjects.

Main Methods:

  • Endorectal stimulation of the pudendal nerve was performed on 30 normal men.
  • Sensory potentials were recorded from the balanopreputial zone using specialized electrodes.
  • Signal averaging (5-40 responses) was employed to obtain reliable sensory potentials.

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Main Results:

  • The pudendal nerve terminal sensory response was successfully obtained in all participants.
  • Mean latency was comparable for both left (5.35 ± 0.97 ms) and right (5.33 ± 0.77 ms) sides.
  • Mean amplitude differed slightly between the left (4.24 µV) and right (3.77 µV) sides.

Conclusions:

  • The evaluated technique enables comparative study of the right and left terminal sensory branches of the pudendal nerve.
  • This method shows potential for diagnosing perineal disorders, including sexual dysfunction, perineal pain, and fecal incontinence.
  • Further clinical experience is required to fully establish its diagnostic utility.