Table 2.
Univariate analysis of intraoperative risk factors for delirium development after cardiac surgery.
| Variable | D (N = 12) | ND (N = 67) | P | Univariate analysis, OR (95% CI) |
|---|---|---|---|---|
| Duration of anesthesia (h) | 5.31 (±1.17) | 4.51 (±1.04) | 0.019 | 1.18 (1.06–2.97) |
| Duration of surgery (h) | 4.52 (±1.15) | 3.76 (±0.97) | 0.017 | 1.82 (1.02–3.12) |
| Duration of CPB (min) | 132.67 (±39.05) | 119.46 (±44.45) | 0.346 | 0.99 (0.98–1.01) |
| Aortic cross-clamp time (min) | 60.06 (±18.03) | 75.98 (±30.90) | 0.484 | 0.99 (0.97–1.01) |
| Minimal temperature (°C) | 29.75 (±2.92) | 31.31 (±3.07) | 0.107 | 1.00 (0.99–1.00) |
| MAP (mm Hg) | 58.07 (±13.94) | 63.11 (±9.79) | 0.129 | 1.04 (0.99–1.10) |
| Lactate levels (mmol/L) | 1.78 (±0.79) | 1.31 (±0.61) | 0.023 | 2.50 (1.07–5.84) |
| Reinstitution of CPB | 25.00% | 3.00% | 0.023 | 3.00 (2.59–73.91) |
| Inotropes after CPB | 97.40% | 51.70% | 0.053 | 6.14 (0.75–50.50) |
D: delirium group; ND: non-delirium group; OR: odds ratio; CI: confidence interval; CPB: cardiopulmonary bypass; MAP: mean arterial pressure; SaO2: arterial oxygen saturation; SBE: standard base excess.