FM latency, FM ratio, F-wave latency versus F-wave index in the diagnosis of diabetic neuropathy

Abstract Background Diabetes is one of the most common causes for peripheral neuropathy which warrants early diagnosis and treatment. The conventional nerve conduction studies appear to be normal if few roots are escaping lesion. In view identifying a better clinical testing method, late response index comprising parameter F wave was constructed compared with diagnosing ability other parameters. Methods This hospital-based cross-sectional study conducted among male diabetics aged 30 50 years in tertiary care hospital. Maintaining an ambient temperature 28 °C following supramaximal stimulation median both upper limbs, using digitalized conduction/electromyography/EP machine, F-wave tracing obtained. Results detected greater number subjects diabetic when mean latency, M latency F–M ratio. Conclusion can used as surrogate electrophysiological detect at stage aids prognosis.