Impact of Chronic Kidney Disease on Clinical Outcomes during Hospitalization and Five-Year Follow-Up after Coronary Artery Bypass Grafting

Table 3

Demographic and clinical variables of the patients according to GFR.

Studied variables		Patients with GFR > 60 (n = 292, 71.4%)	Patients with early CKD (n = 74, 18.1%)	Patients with late CKD (n = 11, 2.7%)	Patients on dialysis (n = 32, 7.8%)	value
Age (years)		59 (54–66)	66 (59–74)	60 (59–64)	65 (55–71)	0.057
Gender, male (n, %)		249 (85.3)	53 (71.6)	9 (81.8)	26 (81.3)	0.04
BMI (kg/m^2)		28 (25.75–31.5)	28.9 (27.4−31.8)	26.6 (24.9–33.5)	27.05 (24.5–32)	0.139
Smoking (n, %)		123 (42.1)	23 (31.1)	5 (45.5)	8 (25)	0.118
Diabetes mellitus (n, %)		227 (77.7)	72 (97.3)	11 (100)	28 (87.5)	<0.001
Hyperlipidemia (n, %)		167 (57.2)	51 (68.9)	5 (45.5)	22 (68.8)	0.108
Hypertension (n, %)		240 (82.2)	69 (93.2)	11 (100)	31 (96.9)	0.016
Bronchial asthma (n, %)		19 (6.5)	17 (23)	1 (9.1)	7 (21.9)	<0.001
Hypothyroidism (n, %)		31 (10.6)	9 (12.2)	1 (9.1)	1 (3.1)	0.55
Hyperthyroidism (n, %)		3 (1)	0 (0)	0 (0)	0 (0)	1
Preoperative AF (n, %)		17 (5.8)	6 (8.1)	1 (9.1)	2 (6.3)	0.7
Autoimmune disease (n, %)		2 (0.7)	2 (2.7)	0 (0)	0 (0)	0.49
Prior stroke (n, %)		20 (6.8)	5 (6.8)	2 (18.2)	1 (3.1)	0.049
CAS (n, %)		19 (6.5)	12 (16.2)	2 (18.2)	4 (12.5)	0.026
PVD (n, %)		23 (7.9)	12 (16.2)	0 (0)	9 (28.1)	0.002
Prior MI (n, %)		170 (58.2)	58 (78.4)	10 (90.9)	19 (59.4)	0.004
Prior PCI (n, %)		91 (31.3)	37 (50)	1 (9.1)	8 (25)	0.003
Prior cardiac surgeries		15 (5.1)	7 (9.5)	0 (0)	5 (15.6)	0.08
Preoperative LVEF%	>55%	106 (36.3)	22 (29.7)	3 (27.3)	10 (31.3)	0.33
	45–55%	81 (27.7)	17 (23)	2 (18.2)	6 (18.8)
	35–45	52 (17.8)	20 (27)	4 (36.4)	12 (37.5)
	<35%	53 (18.2)	15 (20.3)	3 (27.3)	4 (12.5)
Preoperative IABP (n, %)		13 (4.5)	2 (2.7)	0 (0)	0 (0)	0.79
Preoperative ECMO (n, %)		2 (0.7)	0 (0)	0 (0)	0 (0)	1

BMI: body mass index; CAS: carotid artery stenosis; CKD: chronic kidney disease; PVD: peripheral vascular disease; MI: myocardial infarction; PCI: percutaneous coronary intervention; AF: atrial fibrillation; IABP: intra-aortic balloon pump; ECMO: extracorporeal membrane oxygenation; LVEF: left ventricle ejection fraction.