Table 3.

Characteristics and outcomes of patients with proteinuria according to AKI (n = 271)

	Proteinuria without AKI (n = 120)	Proteinuria accompanied with AKI (n = 151)	P-value
Age (years)	41 (17.75)	41 (16.00)	0.685
Gender (% of male)	72.80	79.17	0.200
TBSA (%)	47.5 (34.75)	70 (35.00)	< 0.001
dTBSA (%)	42 (25.75)	58 (37.00)	< 0.001
Escharotomy (%)	7 (28.50)	18 (38.00)	< 0.001
Electrical injury (%)	8.33	8.61	0.936
Chemical injury (%)	19.17	12.58	0.138
Inhalation injury (%)	43.33	50.33	0.226
Comorbidities (%)	10.00	8.95	0.630
ACS (%)	14.17	25.17	0.033
Vasopressor in first 48 h (%)	5.00	8.61	0.249
Artificial colloid (%)	56.14	52.82	0.672
Albumin (%)	42.11	30.28	0.111
Proteinuria at heavy stage (%)	22.71	42.14	0.001
Urine output in shock stage (%, ≥ 0.5 ml/Kg·h-1)	77.19	54.93	< 0.001
Nephrotoxic drugs (%)	45.61	55.63	0.202
Length of mechanical ventilation (days)	0 (3.00)	1 (6.00)	< 0.001
Sepsis during ICU stay (%)	41.67	62.25	0.001
Positive blood culture (%)	71.28	74.35	0.102
Maximum SOFA	0 (5.00)	7 (9.00)	< 0.001
CRRT during ICU stay (%)	8.30	9.93	0.002
Length of CRRT treatment (days)	0 (0.00)	0 (2.00)	0.002
ICU length of stay (days)	0 (24.75)	11 (45.00)	< 0.001
ICU mortality (%)	12.50	28.48	0.001

ACS, abdominal compartment syndrome; AKI, acute kidney injury; CRRT, continuous renal replacement therapy; ICU, intense care unit; SOFA, sequential organ failure assessment; TBSA, total burn surface area; tTBSA, total surface area of third degree burn. Continuous variables, median (quartile range); categorical variables, (%)