Table III.
Neurological characteristics at admission | n (%) | |
---|---|---|
Normal strength | 5 (2) | |
| ||
Unilateral limb weakness | 0 (0) | |
| ||
Weakness in arms and legs | 235 (94.7) | |
| ||
Weakness in legs only | 5 (2) | |
| ||
Weakness in arms only | 3 (1.2) | |
| ||
Severity of weakness (MRC sum score), mean ± SD | 30.3 ± 15.5 | |
| ||
Decreased deep tendon reflexes | 233 (94) | |
| ||
Normal tendon reflexes in affected arms | 9 (3.6) | |
| ||
Normal tendon reflexes in affected legs | 6 (2.4) | |
| ||
Duration of progressive phase | Number of days between onset of weakness and admission | 5 (1-30) |
| ||
Number of days between onset of weakness and nadir | 4 (1-24) | |
| ||
Neurological symptom at nadir | Weakness in arms and legs | 239 (96.3) |
| ||
Weakness in legs only | 3 (1.2) | |
| ||
Weakness in arms only | 1 (0.4) | |
| ||
Decreased deep tendon reflex | 242 (97.6) | |
| ||
Normal tendon reflex in weak limbs | 6 (2.4) | |
| ||
Severity of weakness (MRC sum score) | 28.5 ± 16.5 | |
| ||
Fluctuations in clinical course | Monophasic course | 242 (97.5) |
| ||
Treatment related fluctuations within 8 weeks after onset of weakness | 6/141 (4.1) | |
| ||
Cerebrospinal fluid examination (n = 182) | Cell count < 5µL | 158 (86.8) |
| ||
Cell count between 5-10 µL | 15 (8.2) | |
| ||
Cell count between 10-30µL | 4 (2.2) | |
| ||
Cell count between 30-50 µL | 2 (1) | |
| ||
Cell count between > 50 µL | 3 (1.6) | |
| ||
Elevated protein concentration > 45 mg/dL | 100 (54.9) | |
| ||
Nerve conduction study (n = 229) | Demyelinating subtype | 105 (45.8) |
| ||
Axonal subtype | 102 (44.5) | |
| ||
Inexcitable | 10 (4.4) | |
| ||
Equivocal | 9 (3.9) | |
| ||
Normal | 3 (1.3) |
MRC: Medical Research Council; SD: standard deviation.