The diagnostic sensitivity of different F wave parameters

OBJECTIVE To examine the relative diagnostic sensitivity of various F wave parameters. METHODS Normal values for minimum, mean, and maximum F wave latency, chronodispersion, and persistence in the four major motor nerves were established and systematically applied to at least four separate categories of patients (radiculopathies, polyneuropathies, mononeuropathies, and others). F Waves were studied both isolated and in comparison with other motor nerve conduction parameters. RESULTS F Chronodispersion was the most often abnormal parameter, particularly in lumbosacral radiculopathies. Minimum F wave latency was more useful in polyneuropathies. Compared with minimum F wave latency, F chronodispersion was able to identify most additional cases. CONCLUSIONS F Wave studies should include minimum F wave latency and chronodispersion.

[1]  P. Fawcett,et al.  F-response behaviour in a control population. , 1985, Journal of neurology, neurosurgery, and psychiatry.

[2]  M Schulzer,et al.  Diagnostic tests: A statistical review , 1994, Muscle & nerve.

[3]  M. Fisher.  AAEM minimonograph #13: H reflexes and F waves: Physiology and clinical indications , 1992, Muscle & nerve.

[4]  R. Olney,et al.  The effect of temporal dispersion on compound action potential area in human peripheral nerve , 1987, Muscle & nerve.

[5]  D S Goodin,et al.  Electrophysiologic evaluation of lumbosacral radiculopathies , 1985, Neurology.

[6]  B. Shahani,et al.  Usefulness of electrophysiological studies in the diagnosis of lumbosacral root disease , 1981, Annals of neurology.

[7]  A. Eisen,et al.  The application of F‐wave measurements in the differentiation of proximal and distal upper limb entrapments , 1977, Neurology.

[8]  Shin J. Oh.  Clinical Electromyography: Nerve Conduction Studies , 1984 .

[9]  Jun Kimura,et al.  THE CARPAL TUNNEL SYNDROMELOCALIZATION OF CONDUCTION ABNORMALITIES WITHIN THE DISTAL SEGMENT OF THE MEDIAN NERVE|_1 , 1979 .

[10]  S. Oh,et al.  What is the best diagnostic index of conduction block and temporal dispersion? , 1994, Muscle & nerve.

[11]  J Kimura,et al.  F‐wave velocity in the central segment of the median and ulnar nerves , 1974, Neurology.

[12]  木村 淳.  Electrodiagnosis in diseases of nerve and muscle : principles and practice , 1983 .

[13]  P. Taylor.  CMAP dispersion, amplitude decay, and area decay in a normal population , 1993, Muscle & nerve.

[14]  P Soichot,et al.  Cancellation of single F wave by double stimulation in case of chronic denervation. , 1995, Electroencephalography and clinical neurophysiology.

[15]  J Kimura,et al.  The carpal tunnel syndrome: localization of conduction abnormalities within the distal segment of the median nerve. , 1979, Brain : a journal of neurology.

[16]  Raghavaiah Kanakamedala,et al.  Electrodiagnosis in Diseases of Nerve and Muscle: Principles and Practice. 2nd Edition , 1989 .

[17]  R Liguori,et al.  Determination of the segmental sensory and motor innervation of the lumbosacral spinal nerves. An electrophysiological study. , 1992, Brain : a journal of neurology.

[18]  R. Olney,et al.  The relative diagnostic sensitivity of different F‐wave parameters in various polyneuropathies , 1992, Muscle & nerve.