Figure 4.

Concentration of CRP between the NPOD and POD groups.

Notes: There were no significant differences in the CRP levels between the two groups prior to surgery (T0) (P=0.55) and at the end of surgery (T1) (P=0.50). Furthermore, the CRP levels in each group at T1 were not different from those in the corresponding group at T0 (P>0.05). However, 12 h after surgery (T2), the CRP levels were higher in the POD than that in NPOD group (P<0.01). At T2, the levels of CRP in each group were higher than those in the corresponding group at T0 (P<0.05).

Abbreviations: CRP, C-reactive protein; NPOD, no POD; POD, postoperative delirium; h, hours.