Figure 4
Least mean squares estimates of regional cerebral oxygen saturation (rSO 2 ) in each hemisphere over time in patients with no cognitive changes (NC) and in the patients who showed psychological symptoms (PS). The trend in rSO2 desaturation over the course of surgery was significant (P < 0.001) in both groups; the between-group differences or between-hemisphere differences were not significant. Ind = induction. Tourn = tourniquet. Postop = postoperative.