prospective study on the sensitivity and specificity of electrodiagnostic criteria of CIDP : the utility of SEPs

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Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is one of intractable neurological diseases, and is usually diagnosed using nerve conduction studies (NCSs). However, a low diagnostic sensitivity has been a problem of the previous methods, which may be due to the fact that NCS cannot evaluate the proximal portion of the peripheral nerve that is preferentially involved in CIDP. The present study evaluated CIDP patients using tibial nerve somatosensory evoked potentials (SEPs), which documented proximal-dominant delay in most CIDP patients and achieved a higher diagnostic sensitivity than NCSs.