Skip to main content


Fig. 3 | Journal of Intensive Care

Fig. 3

From: Traumatic brain injury: pathophysiology for neurocritical care

Fig. 3

Changes in CBF related to PaCO2 level variation. In the case of respiratory acidosis, the effect of PaCO2 on the cerebral vasculature can augment cerebral blood flow (CBF). Conversely, CBF would be reduced by vasoconstriction after a drop in PaCO2. When PaCO2 values fall below 20 mmHg from about 40 mmHg, CBF also drops to half of the basic value (arrow)

Back to article page