Author(s): Ahammed Naseem V. H1, Rajalekshmi G2, Zubaida P. A3
F wave is an important electrodiagnostic parameter which assesses conduction through both proximal and distal segments of nerve. It may vary between different population due to difference in physiological variables like height, arm length and temperature. So a normative reference data is to be created for using this parameter with sensitivity and specificity and to improve the diagnostic capacity.
Aim of this study was to derive normal reference value for F wave minimal latency in healthy people in Malabar region and to find out the effect of height on F wave minimal latency.
SETTING AND DESIGN
F wave study was done prospectively in 250 carefully screened healthy subjects of age group 15- 50 years. The study group included equal proportion of males and females. F wave minimal latencies of median and tibial nerves were done.
STATISTICAL ANALYSIS USED
All statistical analyses were done with SPSS software version 16. Average values of F wave minimal latencies of median and tibial nerves were calculated. Effect of height on F wave minimal latency was studied deriving Pearson correlation coefficient.
RESULT AND CONCLUSION
Normal reference data for F wave minimal latency is derived for Malabar region. F wave minimal latencies of tested nerves showed a positive correlation with height. So a height adjusted reference value is to be created for accurate interpretation of this electrodiagnostic parameter.