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Table 2 Potential risk factors

From: Incidence and risk factors of acute kidney injury after femoral neck fracture in elderly patients: a retrospective case-control study

 

Overall N=308

With AKI N=37

Without AKI N=271

P-Valve

Preoperative creatinine (umol/L)

   

0.643

 

76.66+41.28

73.70+29.46

77.07+42.67

 

Preoperative albumin (g/L)

   

0.402

 

36.43+4.17

35.89+4.81

36.50+4.07

 

Postoperative albumin (g/L)

   

0.000

 

31.64+3.90

27.54+2.60

32.21+3.71

 

Preoperative hemoglobin (g/L)

   

0.193

 

115.42+17.68

113.72+11.98

117.12+19.22

 

Hemoglobin change (g/L)

   

0.000

 

8.6+11.73

22.3+15.85

6.73+9.68

 

Preoperative MAP (mmHg)

   

0.352

 

90.52+15.88

88.50+14.56

92.54+17.11

 

Intraoperative hypotension

   

0.000

 

25 (8.1%)

13 (35.1%)

12 (4.4%)

 

Anesthesia

   

1.000

 General anesthesia

71 (23.1%)

8 (21.6%)

63 (23.2%)

 

 Lumbar anesthesia

237 (76.9%)

29 (78.4%)

208 (76.8%)

 

Surgery

   

0.681

 Internal fixation

52 (16.9%)

8 (21.6%)

44 (16.2%)

 

 Hemi-hip arthroplasty

204 (66.2%)

24 (64.9%)

180 (66.4%)

 

 THA

52 (16.9%)

5 (13.5%)

47 (17.3%)

 

Operation time (min)

   

0.163

 

91.96+36.05

99.73+27.59

90.90+36.97

 

Intraoperative blood loss (ml)

   

0.036

 

126.24+126.58

167.03+152.24

120.65+121.92

 

Blood transfusion

   

0.169

 

181 (59%)

25 (67.6%)

156 (57.8%)

 

Postoperative complications

   

0.353

 Infection

32 (10.4%)

4 (10.8%)

28 (10.3%)

 

 Cerebral infarction

1 (3.2%)

1 (2.7%)

0 (0.0%)

 

 Pulmonary embolism

1 (3.2%)

0 (0.0%)

1 (2.7%)

 

 Delirium

1 (3.2%)

0 (0.0%)

1 (2.7%)

 

 Poor wound healing

1 (3.2%)

0 (0.0%)

1 (2.7%)

 
  1. MAP mean arterial pressure, THA total hip arthroplasty