before and during the period of hypotension , the following were measured : mean arterial blood pressure , cardiac output , whole-body o2 consumption , cerebral blood flow , cerebral o2 consumption , arterial blood gases , blood o2 content , and lactate , pyruvate , glucose , epinephrine , and norepinephrine concentrations .
C0020649
hypotension
C0028351
norepinephrine