Table 2. Postural cardiovascular and cerebral blood velocity responses.

Values are medians (range). *P<0.05 compared with supine; †P<0.05 compared with controls.

Measurement	Supine	Standing
MAPheart (mmHg)
Controls	84 (65–94)	84 (70–95)
Patients	106 (85–134)†	57 (42–79)*†
MAPmca (mmHg)
Controls	84 (65–94)	62 (56–73)*
Patients	106 (85–134)†	36 (19–58)*†
MCA Vmean (cm/s)
Controls	58 (47–83)	56 (46–77)
Patients	77 (64–123)†	55 (38–77)*
PETCO2 (mmHg)
Controls	38 (30–40)	35 (31–38)
Patients	37 (26–46)	36 (28–39)
HR (beats/min)
Controls	58 (46–68)	74 (72–86)*
Patients	66 (49–78)	75 (64–97)*†
SV (%)
Controls	100	68 (54–85)*
Patients	100	54 (45–59)*†
CO (%)
Controls	100	93 (75–109)
Patients	100	66 (58–79)*†
TPR (%)
Controls	100	113 (93–126)
Patients	100	84 (58–115)†
TI (Ohm)
Controls	57 (47–80)	60 (54–80)
Patients	56 (47–66)	60 (55–64)