|
Characteristics and Demographics
|
All Patients (n = 940)
|
Without ICU AKI (n = 739)
|
With ICU AKI (n = 201)
|
p-value
|
|---|
|
Age, year
|
61.3 ±15.9
|
60.1± 16.3
|
65.7 ± 13.9
|
<0.001
|
|
Gender, male
|
532 (57%)
|
420 (57%)
|
112 (56%)
|
0.818
|
|
Ethnicity:
|
|
Chinese
|
664 (71%)
|
521 (71%)
|
143 (72%)
|
0.012
|
|
Malay
|
94 (10%)
|
69 (9%)
|
25 (13%)
|
|
Indian
|
75 (8%)
|
54 (7%)
|
21 (11%)
|
|
Others
|
105 (11%)
|
94 (13%)
|
11 (6%)
|
|
Body Mass Index (kg/m2)
|
24.0 ± 7.9
|
23.9± 8.2
|
24.6 ± 6.9
|
0.283
|
|
Diabetes Mellitus
|
221 (24%)
|
152 (21%)
|
69 (34%)
|
<0.001
|
|
Ischemic Heart Disease
|
92 (10%)
|
62 (8%)
|
30 (15%)
|
0.006
|
|
Congestive Heart Failure
|
29 (3%)
|
17 (2%)
|
12 (6%)
|
0.008
|
|
Pre-ICU eGFR (ml/min per 1.73m2)
|
78.1 ± 33.4
|
83.4 ± 30.8
|
59.2 ± 35.7
|
<0.001
|
|
Pre-ICU Haemoglobin levels (g/dL)
|
12.0 ± 2.6
|
12.3± 2.5
|
10.9 ± 2.6
|
<0.001
|
|
Type of surgery:
|
|
Elective
|
432 (46%)
|
373 (51%)
|
59 (29%)
|
<0.001
|
|
Emergency
|
383 (41%)
|
286 (39%)
|
97 (48%)
|
|
No surgery
|
125 (13%)
|
80 (11%)
|
45 (22%)
|
|
Blood transfusion
|
320 (34%)
|
216 (29%)
|
104 (52%)
|
<0.001
|
|
Lowest ICU Haemoglobin in 1st 48 hours (g/dL)
|
10.1 ± 2.2
|
10.3 ± 2.2
|
9.0 ± 1.7
|
<0.001
|
|
Lowest ICU bicarbonate in 1st 24 hours (mEq/L)
|
20.6 ± 4.6
|
21.2 ± 4.2
|
18.4 ± 5.3
|
<0.001
|
|
ICU sepsis
|
232 (25%)
|
134 (18%)
|
98 (49%)
|
<0.001
|
|
Mean Arterial Pressure ≤ 70mmHg
|
197 (21%)
|
128 (17%)
|
69 (34%)
|
<0.001
|
- Abbreviations used: ICU intensive care unit, AKI acute kidney injury, eGFR estimated glomerular filtration rate
