International Journal of Physiology
  • Year: 2015
  • Volume: 3
  • Issue: 1

Determination of F Wave Index in Healthy Adult Males

  • Author:
  • G R Sathya1,, N Krishnamurthy2, Susheela Veliath3, Jayanthi Arulneyam4, Venkatachalam 5
  • Total Page Count: 3
  • Page Number: 132 to 134

1Assistant Professor, Department of Physiology, PIMS, Ganapthichetikulam, Puducherry – 605014

2Professor, Department of Physiology, PIMS, Ganapthichetikulam, Puducherry – 605014

3Professor and Head, Department of Physiology, PIMS, Ganapthichetikulam, Puducherry – 605014

4Professor and Head, Department of Neurology, PIMS, Ganapthichetikulam, Puducherry – 605014

5Assistant Professor, Department of Community Medicine, PIMS, Ganapthichetikulam, Puducherry – 605014

*Corresponding Author: G.R. Sathya, Assistant Professor, Department of Physiology, PIMS, Ganapthichetikulam, Puducherry - 605014, Email id: ksathyavenkat@gmail.com

Online published on 21 February, 2015.

Abstract

Each skeletal muscle is supplied by two or more nerve roots and if one nerve root is affected and the other is spared then the clinically used F wave minimum latency can still be normal. So, in the present study an F wave Index was constructed by taking into consideration the other parameters of F wave like persistence, chronodispersion, latency and arm length to help in the early diagnosis of peripheral neuropathy.

The primary purpose of this study was to provide normative electrophysiological data for F wave Index in the upper limb median nerve(Abductor Pollicis Brevis) in healthy male volunteers.

This was a cross sectional study carried out on 40 healthy adult males between 30 to 50 years of age. The F wave recording was done using a digitalized nerve conduction/EMG/EP machine in a quiet and dimly lit electrophysiological laboratory. All recordings were done between 9 and 11am maintaining an ambient temperature of 22°C. The F wave recording was obtained from a fully relaxed muscle by stimulating the median nerve using the standard procedure. The F wave Index was calculated for median nerve of both upper limbs.

The F wave index was calculated for median nerve. The absolute mean values of F wave Index between right and left arms were different but the difference was not statistically significant (p=0.16).

The F wave Index of the right and the left median nerves were determined.

Keywords

F wave Index, median nerve, upper limb