Abnormal Cerebrovascular Reactivity in Patients with Parkinson’s Disease

Table 5

Cerebral hemodynamic data for PD patients without OH and controls.

	PD without OH	Controls	-Cohen
bBFV (cm/s)	43.39 ± 9.65	54.42 ± 12.03	0.008
abFV (cm/s)	56.25 ± 13.73	75.15 ± 20.07	0.057
%IBFV (%)	30.54 ± 20.64	37.94 ± 20.53	0.23
BHI	1.04 ± 0.98	1.35 ± 0.74	0.16

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