Reference values for F wave parameters in healthy 3-20 year old subjects

Area of Science:

• Neurology
• Clinical Neurophysiology

Background:

• Establishing normative data for electrophysiological parameters is crucial for diagnosing pediatric neurological disorders.
• F wave parameters, including minimum F wave latency minus distal motor latency (FMINLAT), F wave number (FNUMBER), and F wave dispersion (FDISP), are important indicators of nerve conduction.

Purpose of the Study:

• To create a comprehensive reference value database for F wave parameters in healthy individuals aged 3 to 20 years.
• To investigate the influence of age, height, and gender on these F wave parameters.

Main Methods:

• The study analyzed FMINLAT, FNUMBER, and FDISP in the median, ulnar, peroneal, and tibial nerves of healthy subjects.
• A total of 78 to 118 subjects were included for each nerve analyzed.

Main Results:

• Height was a significant predictor of FMINLAT, explaining 80-95% of variability, with latency increasing by 0.12 ms/cm in upper limb nerves and 0.28 ms/cm in lower limb nerves per cm of height.
• Age explained 71-87% of FMINLAT variability.
• FDISP and FNUMBER showed no significant relationship with age, height, or gender in this age group.

Conclusions:

• A linear regression model incorporating height effectively predicts FMINLAT in pediatric subjects.
• Clinically applicable reference values for F wave parameters in healthy individuals aged 3-20 years have been established for commonly studied motor nerves.