Table 1 Patient characteristics, biomarker values and brain imaging type in patients with or without stroke as the main cause of a new episode of dizziness
Stroke (n = 13) | No stroke (n = 122) | P value | |
|---|---|---|---|
Age (yrs) | 70 [62–78] | 60 [42–71] | 0.023 |
Male sex | 6 (46) | 51 (42) | 0.76 |
Delay between dizziness onset and ED visit (h) | 12 [8.5–30] | 12 [6–24] | 0.395 |
Clinical data | |||
Positive HINT maneuvers | 5 (38.5) | 29 (24) | 0.246 |
Positive nystagmus test | 5 (38.5) | 28 (3) | 0.216 |
Positive HIT test | 1 (7) | 10 (8) | 1 |
Positive skew test | 1 (7) | 1 (1) | 0.184 |
Biomarker data | |||
Copeptin value (μmol/L) | 70 [13.5–141] | 10.5 [4–31] | 0.065 |
Copeptin >normal value | 10 (76) | 61 (50) | 0.002 |
S100 protein value (pmol/L) | 0.11 [0.04–0.65] | 0.05 [0.04–0.06] | < 0.0001 |
S100 protein >normal value | 7 (54) | 4 (3) | 0.002 |
Brain imaging | |||
Tomodensitometry | 5 (38) | 6 (5) | 0.001 |
Magnetic resonance imaging | 3 (23) | 71 (58) | 0.02 |
Both | 5 (38) | 45 (37) | 0.91 |