Test results | Controls | Possible MSA | Probable MSA | p Value |
---|---|---|---|---|
NS, not significant. | ||||
*Valsalva values are means (SE). | ||||
aPost hoc comparisons (p<0.001): controls v patients with probable MSA. | ||||
bPost hoc comparisons (p<0.001): patients with possible MSA v patients with probable MSA. | ||||
cPost hoc comparisons (p<0.01): controls v patients with possible MSA. | ||||
dPost hoc comparisons (p<0.01): controls v patients with probable MSA. | ||||
ePost hoc comparisons (p<0.05): controls v patients with possible MSA. | ||||
fPost hoc comparisons (p<0.05): controls v patients with probable MSA. | ||||
gPost hoc comparisons (p<0.05): patients with possible MSA v patients with probable MSA. | ||||
Head-up tilt | ||||
ΔSystolic (mm Hg) | 1 (1)a,e | −14 (3)b,c | −40 (5)a,b | <0.001 |
ΔDiastolic (mm Hg) | 4 (1)a,e | −2 (2)b,e | −20 (3)a,b | <0.001 |
Standing | ||||
ΔSystolic (mm Hg) | 7 (2)a,c | −9 (3)b,c | −38 (6)a,b | <0.001 |
ΔDiastolic (mm Hg) | 7 (2)a,c | −4 (3) b,c | −18 (3)a,b | <0.001 |
Isometric hand grip | ||||
ΔSystolic (mm Hg) | 8 (2) | 3 (2) | 3 (2) | NS |
ΔDiastolic (mm Hg) | 4 (1)f | 1 (1) | −1 (1)f | <0.05 |
Mental arithmetic | ||||
ΔSystolic (mm Hg) | 21 (3)a,e | 7 (4)e | 1 (3)a | <0.001 |
ΔDiastolic (mm Hg) | 9 (2)a | 5 (3)g | −3 (1)a,g | <0.001 |
Cutaneous cold | ||||
ΔSystolic (mm Hg) | 18 (2)d | 13 (4) | 7 (3) d | <0.05 |
ΔDiastolic (mm Hg) | 9 (2) | 8 (2) | 7 (3) | NS |
Deep breathing | ||||
ΔHeart rate | 11 (1)e,f | 7 (1)e | 6(1)f | <0.05 |
*Valsalva | ||||
ratio | 1.43 (0.04)a | 1.33 (0.05)g | 1.18 (0.02)a,g | <0.001 |