Table 2

Motor nerve conduction studies2-150

Patient123456789101112131415
Median M:
 D/P (Amp/mV)0.8/0.63.2/2.46.2/5.67.0/6.06.1/5.77.0/7.02.0/1.57.0/6.04.2/3.45.1/5.06.0/5.0 2.7/1.4 4.0/3.6
 DL (ms) 8.0 7.1 7.0 5.5 6.7 4.24.94.74.23.84.53.44.6
 CV (m/s) 24 31 39414445 35 423847504950
 F (ms)NR 51 44394129NR343535323032
Ulnar M:
 D/P (Amp/ mV)0.7/0.52.0/1.64.0/3.02.0/1.44.0/3.010/9.71.0/0.96.0/5.00.8/0.61.0/0.95.2/4.33.5/3.15.0/4.04.5/4.0
 DL (ms) 4.6 5.4 3.94.2 4.5 3.03.84.34.3 6.3 3.84.33.33.8
 CV (m/s)36364841 35 48 30 4038 20 46375046
 F (ms)NR 46 36 50 4031NR3736NR39383133
Peroneal M2-151:
 D/P (Amp/mV)1.0/0.8NR0.4/0.31.4/1.1NR 1.4/0.6 0.4/0.4NR0.5/0.40.3/0.20.3/0.2NR1.3/0.91.9/1.41.5/1.2
 DL (ms)5.5 12.1 6.5 7.1 6.7 3.54.3 7.5 6.24.45.3
 CV (m/s)383743 32 423636 31 363541
 F (ms)NRNRNR 70 NRNR506256
Tibial M:
 D/P (Amp/mV)NR0.6/0.4NRNR5.0/3.5 1.9/0.8 0.8/0.6NR0.6/0.5NR2.0/1.51.1/0.94.1/3.32.6/2.0
 DL (ms)5.16.56.26.34.75.95.35.35.0
 CV (m/s)35 31 30 31 28 34443944
 F (ms)NR 72 62 NR 63 70 325952
  • 2-150 Underlined values indicate electrophysiological demyelination.

  • 2-151 Recorded from the extensor digitorum brevis or anterior tibialis.

  • D/P=Distal/proximal; NR=no response