Case–control study on the interplay between immunoparalysis and delirium after cardiac surgery

Table 1 Demographic variables of delirious and non-delirious patients

	Non-delirious patients (n = 52)	Delirious patients (n = 14)	p-value
Age (years), mean (SD)	65 (8.2)	68 (6.9)	0.196^a
Sex, male, n (%)	37 (71)	9 (64)	0.745^b
BMI, kg/m², mean (SD)	28 (4.7)	28 (4.3)	0.636^a
Type of surgery			0.536^b
CABG, n (%)	35 (67)	8 (57)
Aortic valve, n (%)	17 (33)	6 (43)
Duration of surgery, minutes, mean (SD)	203 (53)	196 (65)	0.700^a
Perfusion time, minutes, median [IQR]	90 [72–107]	82 [69–117]	0.790^c
AOX time, median [IQR]	63 [52–78]	62 [48–75]	0.505^c
APACHE-II score, median [IQR]	17 [14–29]	19 [16–42]	0.243^c
EuroSCORE-II, mean (SD)	3.4 (2.3)	4.3 (2.0)	0.209^a
Preoperative plasma creatinine level, μmol/L, median [IQR]	84 [75–96]	85 [70–103]	0.947^c

AOX, aortic cross-clamping; APACHE-II, Acute Physiology and Chronic Health Evaluation II score; BMI, body mass index; CABG, coronary artery bypass grafting surgery; EuroSCORE-II, European System for Cardiac Operative Risk Evaluation-II; IQR, interquartile range; SD, standard deviation
^aUnpaired t-test; ^bFisher’s exact test; ^cMann–Whitney U test

ISSN: 1749-8090