Incidence and risk factors for delirium in cardiac surgery intensive care unit patients: A single-center study

Table 1 Demographics, comorbidities, type of surgery, and other parameters for all study participants are presented according to delirium occurrence

Parameters	All (n = 202)	No delirium (n = 143)	Delirium (n = 59)	P value
Males	143 (70.8)	103 (72.0)	40 (67.8)	0.481
Age (years)	66 ± 13	65 ± 13	71 ± 11	0.002
Body mass index (kg/m2)	28.5 ± 5	28.6 ± 5	28.2 ± 5	0.644
Comorbidities
Hypertension	158 (78.2)	111 (77.6)	47 (79.7)	0.811
Diabetes mellitus	65 (32.2)	45 (31.5)	22 (37.3)	0.656
Dyslipidemia	97 (48.0)	68 (47.6)	29 (49.2)	0.963
Smoking	47 (23.3)	33 (23.1)	14 (23.7)	0.39
Chronic obstructive pulmonary disease	17 (8.4)	10 (7.0)	7 (11.9)	0.235
Chronic kidney disease	13 (6.4)	6 (4.2)	7 (11.9)	0.04
Coronary arterial disease	67 (33.2)	49 (34.3)	18 (30.5)	0.683
Stroke	3 (1.5)	1 (0.7)	2 (3.4)	0.199
Thyroid disease	35 (17.3)	27 (18.9)	8 (13.6)	0.4
Pacemaker	5 (2.5)	3 (2.1)	2 (3.4)	0.572
Peripheral arterial disease	10 (5.0)	8 (5.6)	2 (3.4)	0.727
Anemia	11 (5.4)	7 (4.9)	4 (6.8)	0.516
EuroSCORE II	1.67 (1.1-2.8)	1.38 (0.9-2.2)	2.32 (1.6-4.6)	< 0.001
Type of surgery				0.18
CABG	80 (39.6)	58 (40.6)	22 (37.3)
CABG and valve replacement or valvuloplasty	34 (16.8)	21 (14.7)	13 (22.0)
Valvuloplasty	5 (2.5)	4 (2.8)	1 (1.7)
Valve replacement	50 (24.8)	32 (22.4)	18 (30.5)
Aortic dissection	3 (1.5)	1 (0.7)	2 (3.4)
Aneurysm repair and other cardiac surgery	22 (10.9)	19 (13.3)	3 (5.1)
Duration of extracorporeal circulatory support (minute)	121 ± 52	117 ± 49	131 ± 59	0.076
Duration of aortic closure (minute)	80 (59-107)	76 (57-104)	89 (67-109)	0.052
Duration of general anesthesia (minute)	240 (190-300)	231 (183-300)	244 (208-324)	0.07

Continuous variables with a normal distribution are presented as mean ± SD, and those with a non-normal distribution as median and interquartile range (25^th-75^th percentile). Categorical variables are shown as n (%). CABG: Coronary artery bypass grafting.