Table 2 Patient characteristics before and after propensity score matching by intraoperative CV-MAP levels (normal ≤ 10% vs. high > 10%).

Demographic

 Male gender (n, %)

111 (43.4)

395 (39.0)

0.089

95 (41.7)

90 (39.5)

0.045

 Age, × year (mean, SD)

78.58 (9.53)

75.00 (13.00)

0.655

74.00 (17.00)

74.50 (14.00)

0.019

 Smoking (n, %)

31 (12.1)

187 (18.4)

0.177

29 (12.7)

27 (11.8)

0.027

 Alcohol (n, %)

22 (8.6)

126 (12.4)

0.125

21 (9.2)

23 (10.1)

0.030

Comorbidities

 Hypertension (n, %)

138 (53.9)

498 (49.10)

0.096

125 (54.8)

134 (58.8)

0.080

 Diabetes (n, %)

50 (19.5)

241 (23.8)

0.103

47 (20.6)

53 (23.2)

0.063

 COPD (n, %)

39 (15.2)

110 (10.8)

0.130

33 (14.5)

27 (11.8)

0.078

 Cardiovascular disease (n, %)

94 (36.7)

296 (29.2)

0.160

80 (35.1)

76 (33.3)

0.037

 Cerebral infarction (n, %)

91 (35.5)

239 (23.6)

0.264

74 (32.5)

73 (32.0)

0.009

 Dementia (n, %)

13 (5.1)

35 (3.5)

0.080

10 (4.4)

7 (3.1)

0.069

 Intracerebral hemorrhage (n, %)

13 (5.1)

55 (5.4)

0.015

13 (5.7)

8 (3.5)

0.105

Chronic liver disease (n, %)

17 (6.6)

41 (4.0)

0.116

15 (6.6)

14 (6.1)

0.018

 Chronic kidney disease (n, %)

16 (6.3)

48 (4.7)

0.067

15 (6.6)

20 (8.8)

0.082

 Tumor (n, %)

58 (9.7)

37 (9.1)

0.021

33 (8.3)

36 (9.1)

0.026

 Chronic steroid use (n, %)

3 (0.5)

3 (0.7)

0.028

2 (0.5)

3 (0.8)

0.028

Operation

 Fracture type

  Femoral neck fracture (n, %)

91 (35.5)

588 (58.0)

0.410

86 (37.7)

85 (37.3)

0.036

  Intertrochanteric fracture (n, %)

146 (57.0)

371 (36.6)

126 (55.3)

123 (53.9)

  Subtrochanteric fracture (n, %)

19 (7.4)

55 (5.4)

16 (7.0)

20 (8.8)

 Surgery type

  Total hip arthroplasty (n, %)

24 (9.4)

137 (13.5)

0.011

22 (9.6)

13 (5.7)

0.026

  Hemiarthroplasty (n, %)

52 (20.3)

267 (26.3)

48 (21.1)

59 (25.9)

  Intramedullary nail fixation (n, %)

113 (44.1)

301 (29.7)

96 (42.1)

96 (42.1)

  Internal fixation with steel plate (n, %)

48 (18.8)

120 (11.8)

44 (19.3)

41 (18.0)

  Internal fixation with hollow nails (n, %)

19 (7.4)

189 (18.6)

18 (7.9)

19 (8.3)

Intraoperative blood loss, × ml (mean, SD)

196.56 (158.95)

169.94 (150.94)

0.172

200.00 (200.00)

196.00 (200.00)

0.072

Intraoperative time, × hour (mean, SD)

196.56 (158.95)

169.94 (150.94)

0.172

200.00 (200.00)

196.00 (200.00)

0.072

Intraoperative CV-MAP, (mean, SD)

196.56 (158.95)

169.94 (150.94)

0.172

200.00 (200.00)

196.00 (200.00)

0.072

Transfusion (n, %)

64 (25.0)

146 (14.4)

0.269

55 (24.1)

61 (26.8)

0.060

Postoperative ICU (n, %)

26 (10.2)

37 (3.6)

0.258

19 (8.3)

22 (9.6)

0.046

Bedridden time, × day (mean, SD)

6.77 (5.04)

5.68 (3.70)

0.247

(3.00)

5.00 (3.25)

0.019

ASA classification

  I-II (n, %)

180 (70.3)

530 (52.3)

0.377

157 (68.9)

154 (67.5)

0.028

 III–IV (n, %)

76 (29.7)

484 (47.7)

71 (31.1)

74 (32.5)

Laboratory findings

 WBC count, × 10^9/L (mean, SD)

8.49 (3.24)

8.85 (2.75)

0.019

8.75 (2.95)

8.65 (2.76)

0.037

 NEU count, × 10^9/L (mean, SD)

6.58 (2.77)

6.55 (2.64)

0.834

6.64 (2.88)

6.54 (2.65)

0.038

 HGB level, × g/L (mean, SD)

106.38 (20.91)

123.19 (19.13)

0.839

125.00 (25.00)

122.50 (17.75)

0.031

 K, × mmol/L (mean, SD)

3.99 (0.45)

4.02 (0.46)

0.069

4.00 (0.46)

4.02 (0.47)

0.044

 Na, × mmol/L (mean, SD)

139.66 (3.50)

140.08 (6.25)

0.067

139.68 (3.60)

140.06 (6.31)

0.059

 Blood glucose, × mmol/L (mean, SD)

6.81 (2.36)

6.95 (2.71)

0.058

38.00 (5.00)

38.00 (6.00)

0.087

 Cr, × mmol/L (mean, SD)

8.12 (4.15)

7.21 (4.99)

0.198

69.73 (52.94)

71.83 (64.61)

0.011

 Albumin , × g/L (mean, SD)

74.23 (48.61)

71.88 (67.80)

0.040

125.00 (25.00)

122.50 (17.75)

0.033

 d-Dimer, × mg/L (mean, SD)

4.85 (4.60)

4.89 (5.14)

0.009

2.98 (4.43)

4.24 (7.45)

0.056