Plasma catecholamines* at rest and in response to HUT
| Measurement | Controls | Possible MSA | Probable MSA | p Value |
|---|---|---|---|---|
| *Values are means (SE). | ||||
| HUT, head up tilt; Ad, adrenaline; NS, not significant; NA, noradrenaline; DA, dopamine. | ||||
| aPost hoc comparisons (p<0.001): controls v patients with probable MSA. | ||||
| bPost hoc comparisons (p<0.01): controls v patients with probable MSA. | ||||
| cPost hoc comparisons (p<0.05): patients with possible MSA v patients with probable MSA. | ||||
| Ad at rest (pg/ml) | 41 (6) | 48 (7) | 32 (4) | NS |
| ΔAd (pg/ml) | 22 (5) | 17 (7) | 13 (7) | NS |
| NA at rest (pg/ml) | 247 (30)b | 229 (35)c | 113 (19)b,c | <0.05 |
| ΔNA (pg/ml) | 142 (15)a | 122 (19)c | 50 (12)a,c | <0.01 |
| DA at rest (pg/ml) | 17 (4) | 13 (3) | 14 (4) | NS |
| ΔDA (pg/ml) | 7 (4) | 2 (1) | 0 (3) | NS |