Clinical Study
Incidence and Risk Factors of Early Delirium after Cardiac Surgery
Table 1
Univariate analysis of preoperative risk factors for delirium after cardiac surgery.
| | Variable | D () | ND () | | Univariate analysis, OR (95% CI) |
| | Demographic data | | | | | | Age (y) | 67.67 (±10.46) | 64.64 (±10.97) | 0.379 | 1.03 (0.96–1.10) | | Age ≥70 years | 66.70% | 35.80% | 0.047 | 1.05 (0.55–2.04) | | BMI (kg/m2) | 29.06 (±7.76) | 27.80 (±4.55) | 0.439 | 1.05 (0.93–1.18) | | Daily smokers | 8.30% | 13.40% | 0.625 | 0.59 (0.07–5.10) | | History of alcohol abuse | 0% | 7.50% | 4.429 | — | | Sleep disturbances | 41.70% | 40.30% | 0.929 | 1.06 (0.30–3.68) | | MMSE (score) | 28.00 (±1.49) | 27.96 (±1.66) | 0.930 | 0.98 (0.67–1.44) | | Operative risk | | | | | | EuroScore II (%) | 2.36 (±1.41) | 1.97 (±1.43) | 0.392 | 0.84 (0.57–1.25) | | STS risk score (%) | 2.37 (±1.43) | 2.18 (±1.31) | 0.720 | 0.90 (0.49–1.67) | | Comorbidities | | | | | | Diabetes | 41.70% | 19.40% | 0.090 | 2.97 (0.81–10.86) | | Congestive heart failure | 91.70% | 85.10% | 0.472 | 1.93 (0.22–16.64) | | Arterial hypertension | 91.70% | 89.60% | 0.650 | 1.28 (0.14–11.49) | | Atrial fibrillation | 25.00% | 35.80% | 0.354 | 0.60 (0.15–2.42) | | ICA stenosis | 8.30% | 11.90% | 0.588 | 0.67 (0.08–5.91) | | COPD | 8.30% | 11.90% | 0.588 | 0.67 (0.08–5.91) | | Visual impairment | 91.70% | 88.10% | 0.588 | 1.49 (0.17–13.15) | | Hearing impairment | 25.00% | 50.70% | 0.090 | 0.32 (0.08–1.30) | | History of falls | 33.30% | 25.40% | 0.399 | 1.47 (0.39–5.51) |
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D: delirium group; ND: nondelirium group; OR: odds ratio; CI: confidence interval; BMI: body mass index; MMSE: Mini-mental state examination; ICA: internal carotid artery; COPD: chronic obstructive pulmonary disease.
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