Anti-GM1 IgG Antibody
Negative
Titre 1 in 1000
Anti-GD1b IgM Antibody
Positive
Titre 1 in 20,000
Cerebrospinal Fluid
<1 WBC/mm3
Total Protein 0.66 g/L (0.13–0.4)
Glucose 4.0 mmol/L (2.2–4.2) (matched blood glucose 4.8)
CSF and Serum Oligoclonal Bands – negative
Neurophysiology (Tables 11.1 and 11.2)
Table 11.1
Sensory and mixed nerve conduction studies
Amplitude (μV) | Onset latency (m/s) | Peak latency (ms) | Conduction velocity (m/s) | |
---|---|---|---|---|
Right median (F3-wrist) | 4 | 2.9 | 3.7 | 52.5 |
Right ulnar (F5-wrist) | 3 | 2.3 | 3.0 | 60.5 |
Radial (forearm-wrist) | 18 | 1.8 | 2.4 | 61 |
Right sural (calf-ankle) | 9 | 2.8 | 3.5 | 48 |
Right superficial peroneal | 2 | 2.9 | 3.7 | 45 |
Left sural (calf-ankle) | 8 | 2.4 | 3.3 | 55.5 |
Left superfical peroneal | 3 | 2.2 | 3.0 | 49 |
Table 11.2
Motor nerve conduction studies
Right | Left | |
---|---|---|
Right median (SE on APB) | ||
Distal motor latency | 4.1 ms | – |
Conduction velocity (wrist – elbow) | 53 m/s | – |
MAP (wrist) | 8.5 mV | – |
MAP (elbow) | 8.0 mV | – |
F Latency | 30.6 ms | – |
Right ulnar (SE on ADM) | ||
Distal motor latency | 4.1 ms | – |
Conduction velocity | 54 m/s | – |
MAP (wrist) | 10.5 mV | – |
MAP (above elbow) | 9.1 mV | – |
F Latency | 30.4 ms | – |
Common peroneal (SE on EDB)
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