Postoperative Serum Procalcitonin Level Can Be a Useful Marker of Bacterial Infection after Cardiac Surgery Utilizing Cardiopulmonary Bypass

Table 3

Logistic regression analyses demonstrating procalcitonin and white blood cell levels as risk factors of bacterial infection.

Variables	All (N = 146) N (%)	Infection (N = 42) N (%)	value	Univariate analysis		95% CI	Multivariate analysis		95% CI
				OR	value		OR	value
PCT level at POD 7 (ng/dl)
≥4.13	113 (77.40)	25 (59.52)	0.001	3.74	0.002	1.66–8.45	3.410	0.004	1.49–7.81
<4.13	33 (22.60)	17 (40.48)
WBC level at POD 7 (cells/mm^3)
≥19,870	83 (56.85)	19 (45.24)	0.096	0.297	0.074	0.94–4.00	1.614	0.216	0.76–3.44
<19,870	63 (43.15)	23 (54.76)

Note. PCT, procalcitonin; POD, postoperative day; WBC, white blood cell; CI, confidence interval.