Figure 7.

Relationship of systemic oxygen transport to systemic oxygen consumption (A), respiratory quotient (B), and the ratio of mixed venous minus arterial PCO₂ difference to arterial minus mixed venous oxygen content difference (P_mv-aCO₂/C_a-mvO₂) (C) in sheep that underwent progressive bleeding or hemodilution. There were similar degrees of oxygen supply dependence and increases in the respiratory quotient in both groups. In hemodilution, however, the elevation in P_mv-aCO₂/C_a-mvO₂ was disproportionately higher than in hemorrhage and developed even before the development of anaerobic metabolism. Reproduced from Ref. [29] with permission.