Fig. 4

Increases in whole blood carboxyhemoglobin (a) after PNPH infusion had only a small negative effect on arterial O₂ saturation of hemoglobin (b). Data shown for the sham group (n = 6) and groups subjected to TBI and hemorrhage followed by resuscitation at 90 min with lactated Ringer’s solution (LR; n = 12) or PNPH (n = 12). ⁺P < 0.05 versus sham and LR resuscitation groups