Table 2

Somatosensory evoked potentials in SCD

PatientNeuropathyBefore and after substitution with Vitamin B12
Median nerve SEPsTibial nerve SEPs
N9 (ms)N13 (ms)N20 (ms)N22 (ms)P37 (ms)
ARightDemyelinating11.1 (10.5)20.4 (16.5)26.1 (21.6)NR (NR)49.2 (46.2)
LeftDemyelinating11.1 (10.2)19.5 (16.8)27.3 (22.2)NR (NR)53.4 (55.2)
BRightNo 9.6 (ND)15.9 (ND)21 (ND)NR (NR)46 (52.8)
LeftNo10.8 (ND)15.9 (ND)20.7 (ND)NR (NR)54 (53.4)
CRightNo11.6 (10.5)NR (15.3)24.8 (21)NR (NR)48.8 (51)
LeftNo12.8 (10.5)NR (NR)24 (21)NR (25.8)65 (58.2)
DRightMild axonal10.8 (ND)14.6 (ND)21 (ND)22 (NR)54 (51)
LeftMild axonal10.6 (ND)NR (ND)21.4 (ND)22 (NR)50 (48.6)
ERightMild axonalNR (NR)15.9 (NR)21.6 (21)NR (NR)55 (47.4)
LeftMild axonalNR (NR)15.3 (16.5)21.6 (22.2)NR (NR)49.8 (49.2)
FRightNo 9.7 (8.4)NR (12)21.6 (18.9)NR (18.6)61.6 (40.8)
LeftNo 9.8 (8.4)NR (12.3)20.8 (18.9)NR (18.6)58.8 (40.2)
GRightNoNR (ND)14.7 (ND)22.2 (ND)NR (NR)48 (47.3)
LeftNo10.5 (ND)14.7 (ND)22.2 (ND)NR (NR)48 (49.6)
H2-150 RightAxonal12.316.2 23.4 28.255.2
LeftAxonal11.7 17.1 23.5 28.256.4
I2-150 RightAxonalND 18.4 23.6 NR55.2
LeftAxonalND 17.6 23.2 NR49.8
  • 2-150 Patients H and I died of unrelated diseases before follow up examination could be performed

  • Numbers in parenthises represent latencies after treatment. NR=no response; ND=not done.