Table 2 Intra-operative characteristics of cardiac surgery
Variable | All (n = 194) | Delirium (n = 50) | No delirium (n = 144) | p Value |
|---|---|---|---|---|
Type of cardiac surgery | ||||
CABG surgery | 59 (30 %) | 11 (22 %) | 48 (33 %) | 0.50 |
Valve surgery | 69 (36 %) | 19 (38 %) | 50 (35 %) | |
CABG + valve | 20 (10 %) | 6 (12 %) | 14 (9.7 %) | |
Other | 46 (24 %) | 14 (28 %) | 32 (22 %) | |
Duration of cardiac surgery | ||||
Total, minutes | 231 (20–950) | 270 (30–565) | 217 (20–950) | 0.033 |
Non-CPB, minutes (n = 194)a | 130 (15–525) | 127 (15–325) | 135 (17–525) | 0.64 |
CPB, minutes (n = 129)b | 126 (37–717) | 184 (72–299) | 113 (37–717) | <0.001 |
ACT, minutes, (n = 120)c | 88 (14–359) | 105 (40–221) | 80 (14–359) | 0.001 |
Intra-operative variables | ||||
Mean arterial pressure, lowest, mmHg | 55 (30–75) | 50 (30–70) | 55 (30–75) | 0.004 |
Lowest haemoglobin, lowest, g/L | 93 (53–150) | 85 (56–133) | 98 (53–150) | 0.005 |
Lowest body temperature, lowest, °C | 35.0 (23.9–37.2) | 34.5 (24.4–37.2) | 35.1 (23.9–37.2) | 0.035 |
Intra-operative vasopressor support | ||||
Noradrenaline, highest, μg/kg/minute | 0.08 (0.00–0.69) | 0.11 (0.00–0.69) | 0.07 (0.00–0.42) | 0.001 |
Intra-operative transfusions | ||||
RBC, % | 44 (23 %) | 18 (36 %) | 26 (18 %) | 0.018 |
RBC, number of bags (n = 44) | 3 (1–5) | 2 (2–5) | 3 (1–5) | 0.87 |
Platelets, % | 47 (25 %) | 23 (46 %) | 24 (17 %) | <0.001 |
Platelets, number of bags (n = 47) | 1 (1–3) | 1 (1–2) | 2 (1–3) | 0.11 |
Post-operative LVEF, % | 55 (10–76) | 55 (20–76) | 55 (10–75) | 0.59 |