Table 1. Individual Data and Autoregulation Index
In bold are the threshold arterial carbon dioxide (mmHg) (Paco2) values, i.e. , the lowest Paco2at which significantly impaired autoregulation was recorded. Subscripts 1 and 2 refer to measurements taken at the lower and higher mean arterial pressure (mmHg; MAP), respectively.
Vmca = mean of bilateral middle cerebral arterial flow velocities (cm/s); ARI = Autoregulation Index (unitless), calculated as described in Methods.