Prolongation of F-wave minimal latency: a sensitive predictor of polyneuropathy.

Introduction: To evaluate the sensitivity of F-wave minimal latencies, we compared F-waves with motor and sensory nerve conduction studies (MNCS and SNCS) in patients with peripheral neuropathy.

Methods: A retrospective chart review conducted in 484 patients confirmed the clinical evidence of a polyneuropathy, and studies of F-wave minimal latencies as well as MNCS and SNCS in each patient.

Results: Overall rate of abnormality reached 469/484 (96.