Research Article

Abnormal Cerebrovascular Reactivity in Patients with Parkinson’s Disease

Table 4

Cerebral hemodynamic data for PD patients with OH and controls.

PD and OHControls-Cohen

bBFV (cm/s)49.93 ± 12.36 54.42 ± 12.030.16
abFV (cm/s)61.27 ± 12.26 75.15 ± 20.070.02
%IBFV (%)24.65 ± 14.0837.94 ± 20.530.032
BHI0.88 ± 0.51.35 ± 0.740.03

Note: PD = Parkinson’s disease; OH = orthostatic hypotension; bBFV = basal mean blood flow velocity (cm/s); aBFV = mean postapnea blood flow velocity (cm/s); %IBFV = percentage increase in mean velocity during breath-holding (%); BHI = breath-holding index.