Table 1 Nerve conduction studies with patient.

Abnormal results are highlighted in bold. Amp, amplitude; DL, distal latency; CV, conduction velocity; LLN, lower limit of normal; ULN, upper limit of normal; N/A, not applicable; EDB, extensor digitorum brevis muscle (peroneal motor innervated muscle in foot); TA, tibialis anterior muscle (peroneal motor innervated muscle in leg); AHL, abductor hallucis longus muscle (tibial motor innervated muscle in foot); ADM, abductor digitorum minimi (ulnar motor innervated muscle in hand); APB, abductor pollicis brevis (median motor innervated muscle in hand); NR, no response; NRA, no response (no conduction velocity was calculated because the proximal site recording could not be elicited and a velocity could therefore not be calculated).

Nerve
Motor nerve (and muscle)
7 years of age
Amp (mV); (LLN)
9 years of age
CV (m/s); (LLN)
DL (ms);
(ULN)
Amp (mV);
(LLN)
CV (m/s);
(LLN)
DL (ms);
(ULN)
Peroneal (EDB)Not doneNot doneNot doneNRNRNR
Peroneal (TA)Not doneNot doneNot doneNRNRNR
Tibial (AHL)0.4 (>2.5)NRA (>40)6.1 (<6)Not doneNot doneNot done
Median (APB)1.1 (>4.5)31 (>50)4.8 (<4.5)0.2 (>4.5)14 (>50)5.5 (<4.5)
Ulnar (ADM)0.5 (>4.5)14 (>50)4.3 (<3.5)0.1 (>4.5)NR6.3 (<3.5)
Facial (nasalis)0.3 (>1.0)N/A5.8 (<4.2)Not doneNot doneNot done
Sensory nerveAmp (μV); (LLN)CV (m/s); (LLN)Amp (mV); (LLN)CV (m/s); (LLN)
Sural17 (>6)42 (>40)8 (>6)27 (>40)
Median13 (>15)44 (>50)9 (>15)44 (>50)
Ulnar7 (>15)33 (>50)6 (>15)41 (>50)