Complex Assessment of the Incidence and Risk Factors of Delirium in a Large Cohort of Cardiac Surgery Patients: A Single-Center 6-Year Experience

Table 5

Independent predictors of delirium in a multivariate analysis.

Variable	Logistic OR	95% CI	“P”
Postoperative cerebral ischemia (yes = 1)	2.862	1.391–5.890	0.004
Any blood transfusion (yes = 1)	4.178	2.422–7.207	<0.0001
Age > 65 years (yes = 1)	2.417	1.365–4.280	0.002
Carotid artery stenosis (yes = 1)	2.145	1.118–3.878	0.01
Urgent and emergent mode of surgery (yes = 1)	1.982	1.098–3.578	0.02
Hypertension (yes = 1)	0.406	0.231–0.714	0.002
Fasting glucose level (per 1 mg/dL)	1.006	1.002–1.011	0.006
ΔpO2 (<ΔQ1 or >ΔQ3 versus ΔQ1–3)	1.010	1.007–1.013	<0.001
ΔHematocrit (<ΔQ1 or >ΔQ3 versus ΔQ1–3)	1.065	1.005–1.129	0.03

OR: odds ratio, CI: confidence interval, pO₂: arterial oxygen partial pressure, Δ: intraoperative fluctuation (max − min).