Research Article

The Predictive Value of Serum Uric Acid on Acute Kidney Injury following Traumatic Brain Injury

Table 1

Baseline characteristics of AKI patients and non-AKI patients.

Total ()Non-AKI ()AKI ()

Age (year)43 (25-57)41 (23-54)47 (32-60)0.010
Female (, %)93 (24.87)76 (25.76%)17 (21.52%)0.433
Prehospital time (hour)1 (1-2)1 (1-2)1 (1-1)0.028
Vital signs in admission
 SBP (mmHg)120 (105-138)120 (106-138)113 (102-133)0.135
 DBP (mmHg)0.104
 Heart rate (bpm)100 (81-119.25)98 (80-117)107 (89-124)0.015
 Temperature (°C)36.7 (36.5-37.1)36.7 (36.5-37)36.8 (36.4-37.5)0.368
 Respiratory rate20 (16-22)20 (16-23)18 (15-22)0.022
GCS in admission6 (5-9)7 (5-10)5 (4-6)<0.001
Shock (%)116 (31.02%)71 (24.07%)45 (56.96%)<0.001
Laboratory tests
 WBC (109/L)14.34 (10.33-19)13.98 (10.35-18.92)14.98 (10.15-20.17)0.607
 Platelet (109/L)106.5 (68-171.25)122 (76-180)72 (44-111)<0.001
 Hemoglobin (g/L)90 (76-110.25)94 (79-112)80 (71-96)<0.001
 Albumin (g/L)<0.001
 Glucose (mmol/L)9.49 (7.04-13.14)8.84 (6.68-12.53)11.7 (8.9-16.77)<0.001
 Chlorine (mmol/L)110.9 (105.58-118.93)109.3 (104.3-116.6)116.9 (111.8-128.9)<0.001
 Cholesterol (mmol/L)2.75 (1.97-3.62)2.89 (2.22-3.68)1.97 (1.35-2.79)<0.001
 Total bilirubin (μmol/L)14.6 (10.1-20.35)13.9 (9.4-19.65)17.5 (12.1-22.7)0.001
 Serum urea (mmol/L)6.36 (4.93-8.64)5.93 (4.65-7.77)9.4 (7.11-15.3)<0.001
 Serum creatinine (μmol/L)71 (51-96.25)65 (48-82)133 (97-237)<0.001
 Uric acid (μmol/L)288 (186.75-388.5)249 (165-347)452.5 (360-585)<0.001
Drugs for reducing ICP
 Hypertonic saline (%)91 (24.33%)81 (27.46%)10(12.66%)0.004
 Mannitol (%)257 (68.72%)203 (68.81%)54 (68.35%)0.938
 Glycerol fructose (%)30 (8.02%)23 (7.80%)7 (8.86%)0.760
 Furosemide (%)55 (14.71%)39 (13.22%)16 (20.25%)0.129
In-hospital mortality (%)187 (50%)119 (40.34%)68 (80.08%)<0.001
90-day GOS2 (1-3)3 (1-4)1 (1-1)<0.001
Length of ICU stay (day)2 (1-16)2 (0-17)2 (1-11)0.384
Length of hospital stay (day)11 (4-27)13 (5-28)6 (3-14)0.001