Skip to main content
. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Free Radic Biol Med. 2016 Dec 27;103:192–198. doi: 10.1016/j.freeradbiomed.2016.12.039

Figure 2. Associations between intraoperative cerebral hyperoxic reperfusion, cerebral hyperoxia, and cerebral hypoxia and postoperative delirium.

Figure 2

Odds ratios (OR) represent the odds of postoperative delirium for every 10%·hour (e.g., 20% above baseline for 30 minutes equals one 10%·hour hyperoxia) intraoperative oxygenation metric, adjusted for potential confounders, risk factors, and the other oxygenation metrics. For example, a patient with two 10%·hours of hyperoxic reperfusion had a 65% increase in the odds of delirium compared to the patient with one 10%·hours of hyperoxic reperfusion independent of the effects of hyperoxia prior to reperfusion, hypoxia, confounders, and risk factors on delirium. Cerebral oxygenation parameters (x-axis) were truncated at the 90th percentile to simplify exposition.