Figure 4.

Blood flow and tissue oxygen delivery to the brain and kidney of rats at varying levels of anemia. (A) Renal artery blood flow does not change significantly regardless of anemic status (y = -0.0006x + 0.89, r² = 0.14). Common carotid artery flow increases proportionally as arterial blood oxygen content decreases and anemic status increases in severity (y = -0.004x + 1.53, r² = 0.29) (n = 5). (B) Both kidney and brain DO₂ decrease proportionally as arterial blood oxygen content decreases and anemic status increases in severity. Brain DO₂ (y = 0.0005x + 0.06, r² = 0.28) decreases less profoundly as compared to kidney DO₂ at lower arterial blood oxygen content (y = 0.0007x + 0.006, r² = 0.48) (n = 15). Data from Tsui et al. 2014.⁴¹