Table 4.
Distribution of cerebral hemodynamic parameters according to the occurrence of delirium.
| Variable | CAM ICU – N = 50 |
CAM ICU + N = 17 |
P | |
|---|---|---|---|---|
| Before surgery (T1) | ||||
| MAP (mmHg) | 92.2 ± 13.2 | 92.6 ± 14.5 | 0.900 | |
| HR (bpm) | 64.0 ± 10.8 | 68.64 ± 10.3 | 0.126 | |
| CBFV (cm/s) | 60.3 ± 15.4 | 54.6 ± 14.3 | 0.183 | |
| ETCO2 (mmHg) | 33.9 ± 4.5 | 33.6 ± 3.6 | 0.819 | |
| ARI | 5.9 ± 1.5 | 4.8 ± 1.9 | 0.021 | |
| ARI < 4 (n, %) | 7 (14.0%) | 6 (35.3%) | 0.077 | |
| First day post-surgery (T2) | ||||
| MAP (mmHg) | 81.4 ± 12.0 | 83.2 ± 15.2 | 0.608 | |
| HR (bpm) | 102.7 ± 14.16 | 103.2 ± 18.0 | 0.915 | |
| CBFV (cm/s) | 78.2 ± 21.5 | 62.6 ± 17.4 | 0.004 | |
| ETCO2 (mmHg) | 33.2 ± 3.5 | 34.9 ± 4.4 | 0.105 | |
| ARI | 4.3 ± 1.5 | 3.1 ± 1.8 | 0.010 | |
| ARI < 4 (n, %) | 24 (48.0%) | 13 (76.5%) | 0.041 | |
| 7 days post-surgery (T3) | ||||
| MAP (mmHg) | 89.0 ± 8.5 | 91.5 ± 9.2 | 0.309 | |
| HR (bpm) | 89.0 ± 13.7 | 92.1 ± 15.7 | 0.450 | |
| CBFV (cm/s) | 72.9 ± 17.6 | 58.4 ± 18.9 | 0.005 | |
| ETCO2 (mmHg) | 31.9 ± 3.4 | 32.3 ± 3.5 | 0.684 | |
| ARI | 5.9 ± 1.5 | 4.5 ± 2.4 | 0.031 | |
| ARI < 4 (n, %) | 5 (10.0%) | 9 (52.9%) | 0.001 | |
ARI, autoregulation index; CAM ICU, Confusion Assessment Method for the ICU; CBFV, cerebral blood flow velocity. ETCO2, end- tidal CO2; HR, heart rate; MAP, mean arterial pressure.