Table 2

Summary of acute physiology and laboratory parameters by sepsis and AKI


None (n = 57,392)
Sepsis, no AKI (n = 19,336)
Nonseptic AKI (n = 29,356)
Septic AKI (n = 14,039)
P

APACHE II score (mean [SD])
14.4 (6.4)
15.4 (7.0)
20.0 (7.9)
22.3 (8.1)
<0.0001
GCS score (median [IQR])
15 (14–15)
15 (13–15)
15 (13–15)
15 (12–15)
0.001
Mean arterial pressure (mmHg; mean [SD])
84.3 (26.9)
86.5 (27.7)
81.3 (28.2)
77.5 (28.3)
<0.0001
Heart rate (beats/minute; mean [SD])
91 (31)
96 (32)
96 (33)
104 (35)
<0.0001
Respiratory rate (breaths/minute; mean [SD])
18 (10)
20 (11)
20 (10)
23 (11)
<0.0001
PaO2/FiO2 ratio (mean [SD])
287 (154)
262 (145)
260 (153)
230 (140)
<0.0001
PaCO2 (mmHg; mean [SD])
42.7 (12.4)
42.5 (13.1)
43.2 (14.5)
42.0 (14.5)
<0.0001
Temperature (°C; mean [SD])
36.7 (1.5)
36.8 (1.6)
36.6 (1.6)
36.9 (1.7)
<0.0001
Mechanical ventilation (%)
53.3
49.5
52.6
49.2
<0.0001
pH (mean [SD])
7.35 (0.1)
7.35 (0.1)
7.30 (0.1)
7.29 (0.1)
<0.0001
Bilirubin (mmol/l; median [IQR])
12 (6–18)
12 (6–18)
13 (6–19)
14 (7–21)
0.0001
Albumin (g/l; mean [SD])
28.2 (7.4)
27.8 (7.6)
26.2 (7.6)
25.1 (7.4)
<0.0001
Haematocrit (%; median [IQR])
0.33 (0.28–0.39)
0.34 (0.28–0.39)
0.31 (0.27–0.39)
0.32 (0.27–0.38)
0.0001
White cell count (× 109 cells/ml; mean [SD])
13.4 (9.7)
14.2 (13.8)
15.0 (11.5)
16.8 (14.7)
<0.0001
Potassium (mmol/l; mean [SD])
4.2 (0.7)
4.1 (0.7)
4.5 (1.0)
4.4 (1.0)
<0.0001
Creatinine (μmol/l; median [IQR])
76 (60–90)
73 (57–90)
141 (113–200)
165 (124–254)
0.0001
Urea (mmol/l; median [IQR])
5.3 (4–7)
5.6 (4–7.8)
10.4 (7.3–16.1)
13.2 (8.9–19.8)
0.0001
Urine output (l/24 hours; median [IQR])
2.12 (1.54–2.97)
2.05 (1.50–2.98)
1.40 (0.68–2.28)
1.39 (0.66–2.30)
0.0001

APACHE, Acute Physiology and Chronic Health Evaluation; FiO2, fraction of inspired oxygen; GCS, Glasgow Coma Scale; IQR, interquartile range; PaCO2, arterial oxygen tension; PaO2, arterial oxygen tension; SD, standard deviation.

Bagshaw et al. Critical Care 2008 12:R47   doi:10.1186/cc6863